2011-09-19  Mark Hahnenberg  <mhahnenberg@apple.com>

        Remove toPrimitive from JSCell
        https://bugs.webkit.org/show_bug.cgi?id=67875

        Reviewed by Darin Adler.

        Part of the refactoring process to un-virtualize JSCell.  We move 
        all of the implicit functionality provided by the virtual toPrimitive method 
        in JSCell to be explicit in JSValue::toPrimitive and JSCell:toPrimitive while 
        also de-virtualizing JSCell::toPrimitive.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSCell.cpp:
        (JSC::JSCell::toPrimitive):
        * runtime/JSCell.h:

        We replace JSNotAnObject::toPrimitive with defaultValue, which it overrides from 
        JSObject.  This pushes the virtual method further down, enabling us to get rid 
        of the virtual call in JSCell.  Eventually we'll probably have to deal with this
        again, but we'll cross that bridge when we come to it.
        * runtime/JSNotAnObject.cpp:
        (JSC::JSNotAnObject::defaultValue):
        * runtime/JSNotAnObject.h:
        * runtime/JSObject.h:
        * runtime/JSString.h:

2011-09-19  Geoffrey Garen  <ggaren@apple.com>

        Removed ENABLE_LAZY_BLOCK_FREEING and related #ifdefs
        https://bugs.webkit.org/show_bug.cgi?id=68424

        As discussed on webkit-dev. All ports build with threads enabled in JSC now.
        
        This may break WinCE and other ports that have not built and tested with
        this configuration. I've filed bugs for port maintainers. It's time for
        WebKit to move forward.

        Reviewed by Mark Rowe.

        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::~Heap):
        (JSC::Heap::destroy):
        (JSC::Heap::blockFreeingThreadMain):
        (JSC::Heap::allocateBlock):
        (JSC::Heap::freeBlocks):
        (JSC::Heap::releaseFreeBlocks):
        * heap/Heap.h:
        * wtf/Platform.h:

2011-09-19  Geoffrey Garen  <ggaren@apple.com>

        Removed ENABLE_WTF_MULTIPLE_THREADS and related #ifdefs
        https://bugs.webkit.org/show_bug.cgi?id=68423

        As discussed on webkit-dev. All ports build with threads enabled in WTF now.
        
        This may break WinCE and other ports that have not built and tested with
        this configuration. I've filed bugs for port maintainers. It's time for
        WebKit to move forward.

        Reviewed by Mark Rowe.

        * wtf/CryptographicallyRandomNumber.cpp:
        (WTF::ARC4Stream::ARC4RandomNumberGenerator::randomNumber):
        (WTF::ARC4Stream::ARC4RandomNumberGenerator::randomValues):
        * wtf/FastMalloc.cpp:
        * wtf/Platform.h:
        * wtf/RandomNumber.cpp:
        (WTF::randomNumber):
        * wtf/RefCountedLeakCounter.cpp:
        (WTF::RefCountedLeakCounter::increment):
        (WTF::RefCountedLeakCounter::decrement):
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading):
        * wtf/ThreadingWin.cpp:
        (WTF::initializeThreading):
        * wtf/dtoa.cpp:
        (WTF::pow5mult):
        * wtf/gtk/ThreadingGtk.cpp:
        (WTF::initializeThreading):
        * wtf/qt/ThreadingQt.cpp:
        (WTF::initializeThreading):

2011-09-19  Geoffrey Garen  <ggaren@apple.com>

        Removed ENABLE_JSC_MULTIPLE_THREADS and related #ifdefs.
        https://bugs.webkit.org/show_bug.cgi?id=68422
        
        As discussed on webkit-dev. All ports build with threads enabled in JSC now.
        
        This may break WinCE and other ports that have not built and tested with
        this configuration. I've filed bugs for port maintainers. It's time for
        WebKit to move forward.

        Reviewed by Sam Weinig.

        * API/APIShims.h:
        (JSC::APIEntryShimWithoutLock::APIEntryShimWithoutLock):
        * API/JSContextRef.cpp:
        * heap/MachineStackMarker.cpp:
        (JSC::MachineThreads::MachineThreads):
        (JSC::MachineThreads::~MachineThreads):
        (JSC::MachineThreads::gatherConservativeRoots):
        * heap/MachineStackMarker.h:
        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        (JSC::initializeThreading):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::sharedInstance):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::makeUsableFromMultipleThreads):
        * runtime/JSLock.cpp:
        * runtime/Structure.cpp:
        * wtf/Platform.h:

2011-09-19  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r95493 and r95496.
        http://trac.webkit.org/changeset/95493
        http://trac.webkit.org/changeset/95496
        https://bugs.webkit.org/show_bug.cgi?id=68418

        Broke Windows build (Requested by rniwa on #webkit).

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * debugger/Debugger.cpp:
        (JSC::Debugger::recompileAllJSFunctions):
        * heap/AllocationSpace.cpp: Removed.
        * heap/AllocationSpace.h: Removed.
        * heap/Heap.cpp:
        (JSC::CountFunctor::TakeIfEmpty::TakeIfEmpty):
        (JSC::CountFunctor::TakeIfEmpty::operator()):
        (JSC::CountFunctor::TakeIfEmpty::returnValue):
        (JSC::Heap::Heap):
        (JSC::Heap::reportExtraMemoryCostSlowCase):
        (JSC::Heap::tryAllocate):
        (JSC::Heap::allocateSlowCase):
        (JSC::Heap::getConservativeRegisterRoots):
        (JSC::Heap::markRoots):
        (JSC::Heap::clearMarks):
        (JSC::Heap::sweep):
        (JSC::Heap::objectCount):
        (JSC::Heap::size):
        (JSC::Heap::capacity):
        (JSC::Heap::globalObjectCount):
        (JSC::Heap::objectTypeCounts):
        (JSC::Heap::collect):
        (JSC::Heap::canonicalizeBlocks):
        (JSC::Heap::resetAllocator):
        (JSC::Heap::allocateBlock):
        (JSC::Heap::freeBlocks):
        (JSC::Heap::shrink):
        * heap/Heap.h:
        (JSC::Heap::markedSpace):
        (JSC::Heap::forEachCell):
        (JSC::Heap::forEachBlock):
        (JSC::Heap::sizeClassFor):
        (JSC::Heap::allocate):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitAllocateBasicJSObject):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::recompileAllJSFunctions):
        (JSC::JSGlobalData::releaseExecutableMemory):

2011-09-19  Gavin Barraclough  <barraclough@apple.com>

        Errrk, missed stylebot comments in last commit.

        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncSplit):

2011-09-19  Gavin Barraclough  <barraclough@apple.com>

        String#split is buggy
        https://bugs.webkit.org/show_bug.cgi?id=68348

        Reviewed by Sam Weinig.

        * runtime/StringPrototype.cpp:
        (JSC::jsStringWithReuse):
            - added helper function to reuse original JSString value.
        (JSC::stringProtoFuncSplit):
            - Rewritten from the spec.
        * tests/mozilla/ecma/String/15.5.4.8-2.js:
        (getTestCases):
            - This test is not ES5 compliant.

2011-09-19  Geoffrey Garen  <ggaren@apple.com>

        Removed lots of friend declarations from JSCell, so we can more
        effectively make use of private and protected.

        Reviewed by Sam Weinig.

        * runtime/JSCell.h: Removed MSVCBugWorkaround because it was a lot of
        confusion for not much safety.
        (JSC::JSCell::operator new): Made this public because it is used by a
        few clients, and not really dangerous.

        * runtime/JSObject.cpp:
        (JSC::JSObject::put):
        (JSC::JSObject::deleteProperty):
        (JSC::JSObject::defineGetter):
        (JSC::JSObject::defineSetter):
        (JSC::JSObject::getPropertySpecificValue):
        (JSC::JSObject::getOwnPropertyNames):
        (JSC::JSObject::seal):
        (JSC::JSObject::freeze):
        (JSC::JSObject::preventExtensions):
        (JSC::JSObject::removeDirect):
        (JSC::JSObject::createInheritorID):
        (JSC::JSObject::allocatePropertyStorage):
        (JSC::JSObject::getOwnPropertyDescriptor):
        * runtime/JSObject.h:
        (JSC::JSObject::getDirect):
        (JSC::JSObject::getDirectLocation):
        (JSC::JSObject::hasCustomProperties):
        (JSC::JSObject::hasGetterSetterProperties):
        (JSC::JSObject::isSealed):
        (JSC::JSObject::isFrozen):
        (JSC::JSObject::isExtensible):
        (JSC::JSObject::flattenDictionaryObject):
        (JSC::JSObject::finishCreation):
        (JSC::JSObject::prototype):
        (JSC::JSObject::setPrototype):
        (JSC::JSObject::inlineGetOwnPropertySlot):
        (JSC::JSCell::fastGetOwnProperty):
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::putDirectWithoutTransition):
        (JSC::JSObject::transitionTo):
        (JSC::JSObject::visitChildrenDirect): Changed all use of m_structure to
        structure() / setStructure(), so we don't have to be a friend of JSCell.

        * runtime/Structure.h:
        (JSC::JSCell::setStructure): Added, to avoid direct access by JSObject
        to JSCell::m_structure.

2011-09-19  Adam Barth  <abarth@webkit.org>

        Always enable ENABLE(EVENTSOURCE)
        https://bugs.webkit.org/show_bug.cgi?id=68414

        Reviewed by Eric Seidel.

        * Configurations/FeatureDefines.xcconfig:

2011-09-19  Eli Fidler  <efidler@rim.com>

        Enable JSC_MULTIPLE_THREADS for OS(QNX).
        https://bugs.webkit.org/show_bug.cgi?id=68047

        Reviewed by Daniel Bates.

        SA_RESTART was required for SIGUSR2-based debugging, but is not
        present on QNX. This debugging doesn't seem critical to
        JSC_MULTIPLE_THREADS, so allow it to proceed.

        * heap/MachineStackMarker.cpp:
        (JSC::MachineThreads::Thread::Thread):
        (JSC::getPlatformThreadRegisters):
        (JSC::otherThreadStackPointer):
        (JSC::freePlatformThreadRegisters):
        * wtf/Platform.h: enable PTHREADS for OS(QNX)

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Refactor Heap allocation logic into separate AllocationSpace class
        https://bugs.webkit.org/show_bug.cgi?id=68409

        Reviewed by Gavin Barraclough.

        This patch hoists direct manipulation of the MarkedSpace and related
        data out of Heap and into a separate class.  This will allow us to
        have multiple allocation spaces in future, so easing the way towards
        having GC'd backing stores for objects.

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * debugger/Debugger.cpp:
        (JSC::Debugger::recompileAllJSFunctions):
        * heap/AllocationSpace.cpp: Added.
        (JSC::AllocationSpace::tryAllocate):
        (JSC::AllocationSpace::allocateSlowCase):
        (JSC::AllocationSpace::allocateBlock):
        (JSC::AllocationSpace::freeBlocks):
        (JSC::TakeIfEmpty::TakeIfEmpty):
        (JSC::TakeIfEmpty::operator()):
        (JSC::TakeIfEmpty::returnValue):
        (JSC::AllocationSpace::shrink):
        * heap/AllocationSpace.h: Added.
        (JSC::AllocationSpace::AllocationSpace):
        (JSC::AllocationSpace::blocks):
        (JSC::AllocationSpace::sizeClassFor):
        (JSC::AllocationSpace::setHighWaterMark):
        (JSC::AllocationSpace::highWaterMark):
        (JSC::AllocationSpace::canonicalizeBlocks):
        (JSC::AllocationSpace::resetAllocator):
        (JSC::AllocationSpace::forEachCell):
        (JSC::AllocationSpace::forEachBlock):
        (JSC::AllocationSpace::allocate):
        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::reportExtraMemoryCostSlowCase):
        (JSC::Heap::getConservativeRegisterRoots):
        (JSC::Heap::markRoots):
        (JSC::Heap::clearMarks):
        (JSC::Heap::sweep):
        (JSC::Heap::objectCount):
        (JSC::Heap::size):
        (JSC::Heap::capacity):
        (JSC::Heap::globalObjectCount):
        (JSC::Heap::objectTypeCounts):
        (JSC::Heap::collect):
        (JSC::Heap::canonicalizeBlocks):
        (JSC::Heap::resetAllocator):
        (JSC::Heap::freeBlocks):
        (JSC::Heap::shrink):
        * heap/Heap.h:
        (JSC::Heap::objectSpace):
        (JSC::Heap::sizeClassForObject):
        (JSC::Heap::allocate):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitAllocateBasicJSObject):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::recompileAllJSFunctions):
        (JSC::JSGlobalData::releaseExecutableMemory):

2011-09-19  Adam Roben  <aroben@apple.com>

        Windows build fix after r95310

        * JavaScriptCore.vcproj/testRegExp/testRegExpCommon.vsprops: Added
        include\private\JavaScriptCore to the include path so DFGIntrinsic.h can be found.

2011-09-19  Filip Pizlo  <fpizlo@apple.com>

        DFG speculation failures should act as additional value profiles
        https://bugs.webkit.org/show_bug.cgi?id=68335

        Reviewed by Oliver Hunt.
        
        This adds slow-case counters to the old JIT. It also ensures that
        negative zero in multiply is handled carefully. The old JIT
        previously took slow path if the result of a multiply was zero,
        which, without any changes, would cause the DFG to think that
        every such multiply produced a double result.
        
        This also fixes a bug in the old JIT's handling of decrements. It
        would take the slow path if the result was zero, but not if it
        underflowed.
        
        By itself, this would be a 1% slow-down on V8 and Kraken. But then
        I wrote optimizations in the DFG that take advantage of this new
        information. It's no longer the case that every multiply needs to
        do a check for negative zero; it only happens if the negative
        zero is ignored.
        
        This results in a 12% speed-up on v8-crypto, for a 1.4% geomean
        speed-up in V8. It's mostly neutral on Kraken. I can see an
        0.5% slow-down and it appears to be significant.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::resetRareCaseProfiles):
        (JSC::CodeBlock::dumpValueProfiles):
        * bytecode/CodeBlock.h:
        * bytecode/ValueProfile.h:
        (JSC::RareCaseProfile::RareCaseProfile):
        (JSC::getRareCaseProfileBytecodeOffset):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::toInt32):
        (JSC::DFG::ByteCodeParser::makeSafe):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::GPRTemporary::GPRTemporary):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNode.h:
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::propagateNode):
        (JSC::DFG::Propagator::fixupNode):
        (JSC::DFG::Propagator::clobbersWorld):
        (JSC::DFG::Propagator::performNodeCSE):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        (JSC::DFG::SpeculativeJIT::computeValueRecoveryFor):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileSlowCases):
        * jit/JIT.h:
        (JSC::JIT::linkDummySlowCase):
        * jit/JITArithmetic.cpp:
        (JSC::JIT::emit_op_post_dec):
        (JSC::JIT::emit_op_pre_dec):
        (JSC::JIT::compileBinaryArithOp):
        (JSC::JIT::emit_op_add):
        (JSC::JIT::emitSlow_op_add):
        * jit/JITInlineMethods.h:
        (JSC::JIT::addSlowCase):

2011-09-19  Adam Roben  <aroben@apple.com>

        Windows build fix after r94575

        * JavaScriptCore.vcproj/JavaScriptCore.sln: Relinearized project dependencies. testRegExp
        now builds just before FindSafari.

2011-09-19  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r95466.
        http://trac.webkit.org/changeset/95466
        https://bugs.webkit.org/show_bug.cgi?id=68389

        Incorrect version of the patch. (Requested by mhahnenberg on
        #webkit).

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSCell.cpp:
        (JSC::JSCell::toPrimitive):
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::toPrimitive):
        * runtime/JSNotAnObject.cpp:
        (JSC::JSNotAnObject::toPrimitive):
        * runtime/JSNotAnObject.h:
        * runtime/JSObject.h:
        * runtime/JSString.h:

2011-09-19  Mark Hahnenberg  <mhahnenberg@apple.com>

        Remove toPrimitive from JSCell
        https://bugs.webkit.org/show_bug.cgi?id=67875

        Reviewed by Geoffrey Garen.

        Part of the refactoring process to un-virtualize JSCell.  We move 
        all of the implicit functionality provided by the virtual toPrimitive method 
        in JSCell to be explicit in JSValue::toPrimitive and JSCell:toPrimitive while 
        also de-virtualizing JSCell::toPrimitive.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSCell.cpp:
        (JSC::JSCell::toPrimitive):
        * runtime/JSCell.h:

        We replace JSNotAnObject::toPrimitive with defaultValue, which it overrides from 
        JSObject.  This pushes the virtual method further down, enabling us to get rid 
        of the virtual call in JSCell.  Eventually we'll probably have to deal with this
        again, but we'll cross that bridge when we come to it.
        * runtime/JSNotAnObject.cpp:
        (JSC::JSNotAnObject::defaultValue):
        * runtime/JSNotAnObject.h:
        * runtime/JSObject.h:
        * runtime/JSString.h:
        (JSC::JSValue::toPrimitive):

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Build fix.

        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::compileGetDirectOffset):

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Rename NewSpace.{h,cpp} to MarkedSpace.{h,cpp}
        https://bugs.webkit.org/show_bug.cgi?id=68376

        Reviewed by Gavin Barraclough.

        Renamed the the MarkedSpace files to match new name, and
        updated the relevant references.

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Heap.h:
        * heap/MarkedSpace.cpp: Renamed from Source/JavaScriptCore/heap/NewSpace.cpp.
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::addBlock):
        (JSC::MarkedSpace::removeBlock):
        (JSC::MarkedSpace::resetAllocator):
        (JSC::MarkedSpace::canonicalizeBlocks):
        * heap/MarkedSpace.h: Renamed from Source/JavaScriptCore/heap/NewSpace.h.
        (JSC::MarkedSpace::waterMark):
        (JSC::MarkedSpace::highWaterMark):
        (JSC::MarkedSpace::setHighWaterMark):
        (JSC::MarkedSpace::sizeClassFor):
        (JSC::MarkedSpace::allocate):
        (JSC::MarkedSpace::forEachBlock):
        (JSC::MarkedSpace::SizeClass::SizeClass):
        (JSC::MarkedSpace::SizeClass::resetAllocator):
        (JSC::MarkedSpace::SizeClass::canonicalizeBlock):
        * runtime/JSCell.h:

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Rename NewSpace to MarkedSpace
        https://bugs.webkit.org/show_bug.cgi?id=68375

        Reviewed by Gavin Barraclough.

        Rename NewSpace to a more accurate name, and update all uses.
        This patch doesn't rename the files themselves as that will
        just make the patch appear bigger than it is.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * heap/Heap.cpp:
        (JSC::CountFunctor::TakeIfEmpty::TakeIfEmpty):
        (JSC::CountFunctor::TakeIfEmpty::operator()):
        (JSC::Heap::Heap):
        (JSC::Heap::reportExtraMemoryCostSlowCase):
        (JSC::Heap::tryAllocate):
        (JSC::Heap::allocateSlowCase):
        (JSC::Heap::collect):
        (JSC::Heap::canonicalizeBlocks):
        (JSC::Heap::resetAllocator):
        (JSC::Heap::isValidAllocation):
        (JSC::Heap::shrink):
        * heap/Heap.h:
        (JSC::Heap::markedSpace):
        (JSC::Heap::sizeClassFor):
        (JSC::Heap::allocate):
        * heap/NewSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::addBlock):
        (JSC::MarkedSpace::removeBlock):
        (JSC::MarkedSpace::resetAllocator):
        (JSC::MarkedSpace::canonicalizeBlocks):
        * heap/NewSpace.h:
        (JSC::MarkedSpace::waterMark):
        (JSC::MarkedSpace::highWaterMark):
        (JSC::MarkedSpace::setHighWaterMark):
        (JSC::MarkedSpace::sizeClassFor):
        (JSC::MarkedSpace::allocate):
        (JSC::MarkedSpace::forEachBlock):
        (JSC::MarkedSpace::SizeClass::SizeClass):
        (JSC::MarkedSpace::SizeClass::resetAllocator):
        (JSC::MarkedSpace::SizeClass::canonicalizeBlock):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitAllocateBasicJSObject):

2011-09-19  Peter Rybin  <peter.rybin@gmail.com>

        TextPosition refactoring: Merge ZeroBasedNumber and OneBasedNumber classes
        https://bugs.webkit.org/show_bug.cgi?id=63541

        Reviewed by Adam Barth.

        * parser/SourceProvider.h:
        (JSC::SourceProvider::startPosition):
        * wtf/text/TextPosition.h:
        (WTF::OrdinalNumber::fromZeroBasedInt):
        (WTF::OrdinalNumber::fromOneBasedInt):
        (WTF::OrdinalNumber::OrdinalNumber):
        (WTF::OrdinalNumber::zeroBasedInt):
        (WTF::OrdinalNumber::oneBasedInt):
        (WTF::OrdinalNumber::operator==):
        (WTF::OrdinalNumber::operator!=):
        (WTF::OrdinalNumber::first):
        (WTF::OrdinalNumber::beforeFirst):
        (WTF::TextPosition::TextPosition):
        (WTF::TextPosition::minimumPosition):
        (WTF::TextPosition::belowRangePosition):

2011-09-19  Dan Bernstein  <mitz@apple.com>

        JavaScriptCore part of [mac] WebKit contains Objective-C classes that are not prefixed with its standard prefixes
        https://bugs.webkit.org/show_bug.cgi?id=68323

        Reviewed by Sam Weinig.

        Renamed WTFMainThreadCaller to JSWTFMainThreadCaller.

        * wtf/mac/MainThreadMac.mm:
        (WTF::initializeMainThreadPlatform):
        (WTF::initializeMainThreadToProcessMainThreadPlatform):

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Remove direct property slot pointers from the instruction stream
        https://bugs.webkit.org/show_bug.cgi?id=68373

        Reviewed by Gavin Barraclough.

        Use an indirect load to access prototype properties rather than directly
        storing the property address in the instruction stream.  This should allow
        further optimisations in future, and also provides a 0.5% win to sunspider.

        * dfg/DFGRepatch.cpp:
        (JSC::DFG::generateProtoChainAccessStub):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::compileGetDirectOffset):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::compileGetDirectOffset):
        * runtime/JSObject.h:
        (JSC::JSObject::addressOfPropertyStorage):

2011-09-19  Oliver Hunt  <oliver@apple.com>

        Remove bump allocator
        https://bugs.webkit.org/show_bug.cgi?id=68370

        Reviewed by Sam Weinig.

        Can't do anything with this allocator currently, and it's
        increasing the complexity of the GC code.  Slight progression
        on SunSpider, slight regression (undoing the original progression)
        in V8.

        * heap/Heap.cpp:
        (JSC::Heap::collect):
        * heap/Heap.h:
        * heap/NewSpace.cpp:
        (JSC::NewSpace::NewSpace):
        * heap/NewSpace.h:
        (JSC::NewSpace::allocate):
        * runtime/JSObject.cpp:
        (JSC::JSObject::allocatePropertyStorage):
        * runtime/JSObject.h:
        (JSC::JSObject::~JSObject):
        (JSC::JSObject::visitChildrenDirect):
        * runtime/StorageBarrier.h:
        (JSC::StorageBarrier::set):

2011-09-19  Carlos Garcia Campos  <cgarcia@igalia.com>

        [GTK] Fix distcheck build
        https://bugs.webkit.org/show_bug.cgi?id=68346

        Reviewed by Philippe Normand.

        * GNUmakefile.list.am:

2011-09-19  Carlos Garcia Campos  <cgarcia@igalia.com>

        [GTK] Fix distcheck build
        https://bugs.webkit.org/show_bug.cgi?id=68241

        Reviewed by Martin Robinson.

        * GNUmakefile.list.am:

2011-09-18  Dan Bernstein  <mitz@apple.com>

        Removed ProfilerServer.

        Reviewed by Mark Rowe.

        * JavaScriptCore.gypi:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * profiler/ProfilerServer.h: Removed.
        * profiler/ProfilerServer.mm: Removed.
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * wscript:

2011-09-17  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT should inline Math.min, Math.max, and Math.sqrt
        https://bugs.webkit.org/show_bug.cgi?id=68318

        Reviewed by Gavin Barraclough.
        
        Adds Math.min, Math.max, and Math.sqrt intrinsics. Adds support for
        a function to have an intrinsic but not a thunk generator. This is
        a 7% speed-up on access-nbody, and neutral elsewhere, mainly because
        we're still not DFG compiling the bulk of the hot code in Kraken audio
        benchmarks.

        * create_hash_table:
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::handleMinMax):
        (JSC::DFG::ByteCodeParser::handleIntrinsic):
        * dfg/DFGIntrinsic.h:
        * dfg/DFGNode.h:
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::propagateNode):
        (JSC::DFG::Propagator::fixupNode):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::hostFunctionStub):
        * runtime/Lookup.cpp:
        (JSC::setUpStaticFunctionSlot):

2011-09-18  Nico Weber  <thakis@chromium.org>

        Remove two files from JavaScriptCore.gypi that were removed in r95240
        https://bugs.webkit.org/show_bug.cgi?id=68327

        Unreviewed, build warning fix.

        * JavaScriptCore.gypi:

2011-09-17  Oliver Hunt  <oliver@apple.com>

        Remove special case handling of inline storage from the JIT
        https://bugs.webkit.org/show_bug.cgi?id=68319

        Reviewed by Gavin Barraclough.

        Simplify logic used for reading and writing to property storage
        by removing the special cases for inline storage.  This has no
        perf impact.

        * dfg/DFGRepatch.cpp:
        (JSC::DFG::generateProtoChainAccessStub):
        (JSC::DFG::tryBuildGetByIDList):
        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::compilePutDirectOffset):
        (JSC::JIT::compileGetDirectOffset):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompileGetByIdSelfList):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::compilePutDirectOffset):
        (JSC::JIT::compileGetDirectOffset):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompileGetByIdSelfList):

2011-09-17  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not have full block-local CSE
        https://bugs.webkit.org/show_bug.cgi?id=68316

        Reviewed by Oliver Hunt.
        
        This adds block-local CSE to the DFG. CSE runs in the propagator just after
        type propagation. It is part of the propagator itself because it needs to
        use the propagator's internal data structures to determine which operations
        may have side effects. Because it changes the live-ranges of nodes, the
        virtual register allocator had to be moved into the propagator so that it
        runs after CSE. To ensure that the back-end knows to keep the inputs to
        any eliminated node alive for OSR, a new node type, Phantom, was introduced.
        It is a no-op but prolonges the live-range of its inputs.
        
        This is an 80% speed-up on imaging-gaussian-blur, and a 10% speed-up on
        Kraken.
        
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * dfg/DFGAliasTracker.h: Removed.
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::MethodCheckData::operator==):
        (JSC::DFG::MethodCheckData::operator!=):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::hasVirtualRegister):
        (JSC::DFG::Node::setRefCount):
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::Propagator):
        (JSC::DFG::Propagator::fixpoint):
        (JSC::DFG::Propagator::propagateNode):
        (JSC::DFG::Propagator::canonicalize):
        (JSC::DFG::Propagator::computeStartIndex):
        (JSC::DFG::Propagator::startIndex):
        (JSC::DFG::Propagator::pureCSE):
        (JSC::DFG::Propagator::globalVarLoadElimination):
        (JSC::DFG::Propagator::getByValLoadElimination):
        (JSC::DFG::Propagator::getMethodLoadElimination):
        (JSC::DFG::Propagator::performSubstitution):
        (JSC::DFG::Propagator::setReplacement):
        (JSC::DFG::Propagator::performNodeCSE):
        (JSC::DFG::Propagator::performBlockCSE):
        (JSC::DFG::Propagator::localCSE):
        (JSC::DFG::Propagator::allocateVirtualRegisters):
        (JSC::DFG::propagate):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-09-16  Filip Pizlo  <fpizlo@apple.com>

        method_check should repatch itself if it finds that the new structure(s)
        are the result of transitions from the old structure(s)
        https://bugs.webkit.org/show_bug.cgi?id=68294

        Reviewed by Gavin Barraclough.
        
        Previously a patched method_check would slow-path to get_by_id. Now it
        slow-paths to method_check_update, which attempts to correct the
        method_check due to structure transitions before bailing to get_by_id.
        
        This is a 1-2% speed-up on some benchmarks and is not a slow-down
        anywhere, leading to a 0.6% speed-up on the Kraken geomean.

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::patchMethodCallProto):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JITStubs.h:
        * runtime/Structure.h:
        (JSC::Structure::transitivelyTransitionedFrom):

2011-09-16  Ryosuke Niwa  <rniwa@webkit.org>

        Touch Platform.h in the hope to fix SnowLeopard Intel Release (WebKit2 Tests).

        * wtf/Platform.h:

2011-09-16  Sam Weinig  <sam@webkit.org>

        Rename APIValueWrapper type to APIValueWrapperType for consistency
        https://bugs.webkit.org/show_bug.cgi?id=68306

        Reviewed by Anders Carlsson.

        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        Update name.

        * runtime/JSType.h:
        Update name and un-indent.

        * runtime/Structure.h:
        (JSC::JSCell::isAPIValueWrapper):
        Update name.

2011-09-16  Sam Weinig  <sam@webkit.org>

        Remove unused isStrictModeFunction function
        https://bugs.webkit.org/show_bug.cgi?id=68305

        Reviewed by Anders Carlsson.

        * runtime/JSObject.h:
        (JSC::JSObject::isStrictModeFunction):

2011-09-16  Sam Weinig  <sam@webkit.org>

        Cleanup JSTypeInfo a bit
        https://bugs.webkit.org/show_bug.cgi?id=68289

        Reviewed by Anders Carlsson.

        * dfg/DFGOperations.cpp:
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        Replace direct access to flags() with predicate.

        * runtime/JSObject.h:
        (JSC::JSFinalObject::createStructure):
        Pass FinalObjectType instead of using special IsJSFinalObject.

        * runtime/JSTypeInfo.h:
        (JSC::TypeInfo::TypeInfo):
        Add additional assert that you should no object should OverridesHasInstance but not have ImplementsHasInstance set.

        (JSC::TypeInfo::isFinalObject):
        Added.

        (JSC::TypeInfo::masqueradesAsUndefined):
        (JSC::TypeInfo::implementsHasInstance):
        (JSC::TypeInfo::isEnvironmentRecord):
        (JSC::TypeInfo::overridesHasInstance):
        (JSC::TypeInfo::implementsDefaultHasInstance):
        (JSC::TypeInfo::overridesGetOwnPropertySlot):
        (JSC::TypeInfo::overridesVisitChildren):
        (JSC::TypeInfo::overridesGetPropertyNames):
        (JSC::TypeInfo::prohibitsPropertyCaching):
        (JSC::TypeInfo::isSetOnFlags1):
        (JSC::TypeInfo::isSetOnFlags2):
        Replace direct bit twiddling with helper functions.

        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        Use new isFinalObject() predicate.

2011-09-16  Gavin Barraclough  <barraclough@apple.com>

        Unsigned bit shift fails under certain conditions in 32 bit builds
        https://bugs.webkit.org/show_bug.cgi?id=68166

        Reviewed by Geoff Garen.

        The major bug here is that the slow case (which handles shifts of
        doubles) doesn't check for negative results from an unsigned shift
        (which should be unsigned, and as such can't be represented by a
        signed integer immediate).  The implementation is also flawed for
        shifts by negative shift amounts (treats as shift by zero).

        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emitRightShift):
        (JSC::JIT::emitRightShiftSlowCase):

2011-09-16  Geoffrey Garen  <ggaren@apple.com>

        Removed undetectable style.filter.

        Reviewed by Sam Weinig.
        
        This feature was added in http://trac.webkit.org/changeset/15557 to
        support housingmaps.com. But housingmaps.com no longer needs this hack,
        we don't know of other websites that need it, and we don't know of
        any other browsers that have implemented this feature.

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/JSTypeInfo.h:
        * runtime/StringObjectThatMasqueradesAsUndefined.h: Removed.

2011-09-15  Sam Weinig  <sam@webkit.org>

        Prepare JSTypes for more Object subtypes
        https://bugs.webkit.org/show_bug.cgi?id=68200

        Reviewed by Gavin Barraclough.

        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::branchIfNotObject):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitJumpIfNotObject):
        * runtime/JSGlobalObject.h:
        (JSC::Structure::prototypeForLookup):
        * runtime/JSObject.h:
        (JSC::JSObject::finishCreation):
        * runtime/JSType.h:
        * runtime/JSTypeInfo.h:
        (JSC::TypeInfo::type):
        (JSC::TypeInfo::isObject):
        (JSC::TypeInfo::isFinal):
        (JSC::TypeInfo::prohibitsPropertyCaching):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::finishCreation):
        * runtime/Operations.cpp:
        (JSC::jsIsObjectType):
        * runtime/Structure.cpp:
        (JSC::Structure::addPropertyTransitionToExistingStructure):
        (JSC::Structure::addPropertyTransition):
        * runtime/Structure.h:
        (JSC::Structure::isObject):
        (JSC::JSCell::isObject):

2011-09-16  Geoffrey Garen  <ggaren@apple.com>

        Rolled back in r95201 with test failure fixed.
        
        I missed two cases of jumpSlowToHot in rshift -- these cases need to be
        sure to initialize regT1 to the int tag, since it will otherwise hold
        the top 32 bits of a double.

        * jit/JIT.h:
        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emit_op_lshift):
        (JSC::JIT::emitRightShift):
        (JSC::JIT::emitRightShiftSlowCase):
        (JSC::JIT::emit_op_bitand):
        (JSC::JIT::emit_op_bitor):
        (JSC::JIT::emit_op_bitxor):
        (JSC::JIT::emit_op_bitnot):
        (JSC::JIT::emit_op_post_inc):
        (JSC::JIT::emit_op_post_dec):
        (JSC::JIT::emit_op_pre_inc):
        (JSC::JIT::emit_op_pre_dec):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitStoreAndMapInt32):

2011-09-16  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed Windows build fix after 95318.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-09-16  Adam Roben  <aroben@apple.com>

        Windows build fix after r95310

        * JavaScriptCore.vcproj/jsc/jscCommon.vsprops: Added include\private\JavaScriptCore to the
        include path so DFGIntrinsic.h can be found.

2011-09-16  Gavin Barraclough  <barraclough@apple.com>

        Rationalize JSObject::putDirect* methods
        https://bugs.webkit.org/show_bug.cgi?id=68274

        Reviewed by Sam Weinig.
        
        Delete the *Function variants. These are overall inefficient,
        in the way they get the name back from the function rather
        than just passing it in.

        * JavaScriptCore.exp:
        * jsc.cpp:
        (GlobalObject::finishCreation):
        (GlobalObject::addFunction):
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::addFunctionProperties):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSObject.cpp:
        (JSC::JSObject::put):
        (JSC::JSObject::putWithAttributes):
        (JSC::JSObject::defineGetter):
        (JSC::JSObject::defineSetter):
        * runtime/JSObject.h:
        (JSC::JSObject::putDirect):
        (JSC::JSObject::putDirectWithoutTransition):
        * runtime/Lookup.cpp:
        (JSC::setUpStaticFunctionSlot):
        * runtime/Lookup.h:
        (JSC::lookupPut):

2011-09-16  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix for Windows.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:

2011-09-16  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix for non-DFG builds.

        * runtime/Executable.h:
        (JSC::NativeExecutable::finishCreation):

2011-09-16  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT should inline Math.abs
        https://bugs.webkit.org/show_bug.cgi?id=68227

        Reviewed by Oliver Hunt.
        
        This adds the ability to track intrinsic functions throughout the
        host function infrastructure, so that the DFG can easily query
        whether or not a call's target is intrinsic, and if so, which
        intrinsic it is.
        
        On top of this, it adds Math.abs intrinsics to DFG. Call(Math.abs)
        is transformed into ValueToNumber<-ArithAbs nodes. These nodes
        then get optimized using the usual tricks.
        
        Also had to make a completely unrelated change to
        DateInstanceCache.h in order to fix a preexisting alphabetical
        sorting problem in JSGlobalData.h
        
        This results in a big win in imaging-gaussian-blur: 61% faster
        than before. The net win on Kraken is around 13%.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * create_hash_table:
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::isFunctionConstant):
        (JSC::DFG::Graph::valueOfFunctionConstant):
        * dfg/DFGIntrinsic.h: Added.
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::isFunctionConstant):
        (JSC::DFG::JITCodeGenerator::valueOfFunctionConstant):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::isFunctionConstant):
        (JSC::DFG::JITCompiler::valueOfFunctionConstant):
        * dfg/DFGNode.h:
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::propagateNode):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::hostFunctionStub):
        * jit/JITStubs.h:
        * runtime/DateInstanceCache.h:
        * runtime/Executable.cpp:
        (JSC::ExecutableBase::intrinsic):
        (JSC::NativeExecutable::intrinsic):
        * runtime/Executable.h:
        (JSC::NativeExecutable::create):
        (JSC::NativeExecutable::finishCreation):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::getHostFunction):
        * runtime/JSGlobalData.h:
        * runtime/Lookup.cpp:
        (JSC::HashTable::createTable):
        (JSC::setUpStaticFunctionSlot):
        * runtime/Lookup.h:
        (JSC::HashEntry::initialize):
        (JSC::HashEntry::intrinsic):

2011-09-16  Filip Pizlo  <fpizlo@apple.com>

        REGRESSION: Reproducible crash below SlotVisitor::harvestWeakReferences
        using Domino's online ordering
        https://bugs.webkit.org/show_bug.cgi?id=68220

        Reviewed by Oliver Hunt.
        
        Weak handle processing can result in new objects being marked, which
        results in new WeakReferencesHarvesters being added. But weak
        reference harvesters are only processed before weak handle processing,
        so there's the risk that a weak reference harvester will persist
        until the next collection, by which time it may have been deleted.

        * heap/Heap.cpp:
        (JSC::Heap::markRoots):

2011-09-16  Csaba Osztrogonác  <ossy@webkit.org>

        REGRESSION(r95201): It made two tests fail
        https://bugs.webkit.org/show_bug.cgi?id=68230

        Unreviewed rolling out r95201.

        * jit/JIT.h:
        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emit_op_lshift):
        (JSC::JIT::emitRightShift):
        (JSC::JIT::emit_op_bitand):
        (JSC::JIT::emit_op_bitor):
        (JSC::JIT::emit_op_bitxor):
        (JSC::JIT::emit_op_bitnot):
        (JSC::JIT::emit_op_post_inc):
        (JSC::JIT::emit_op_post_dec):
        (JSC::JIT::emit_op_pre_inc):
        (JSC::JIT::emit_op_pre_dec):
        * jit/JITInlineMethods.h:

2011-09-15  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not optimize method_check
        https://bugs.webkit.org/show_bug.cgi?id=68215

        Reviewed by Oliver Hunt.
        
        MethodCallLinkInfo and StructureStubInfo are now searchable by
        bytecodeIndex, so that DFG::ByteCodeParser can use that information
        to determine how to optimize GetMethod.
        
        A new node op has been added to DFG: CheckMethod. This is a variant
        of GetMethod that has been optimized for the case that GetMethod
        always takes the fast path. CheckMethod results in only a very
        small amount of code (two loads and two branches in the worst case,
        one load and one branch in the best case). CheckMethod behaves as
        if it were a constant.  
        
        Introduced the notion that a DFG node that is not JSConstant
        behaves as a constant. CheckMethod uses this functionality.
        
        This is a 3% speed-up on Kraken, and a small speed-up on V8.
        Appears to be neutral on SunSpider.

        * bytecode/CodeBlock.h:
        (JSC::getStructureStubInfoBytecodeIndex):
        (JSC::getMethodCallLinkInfoBytecodeIndex):
        * bytecode/PredictedType.cpp:
        (JSC::predictionFromCell):
        (JSC::predictionFromValue):
        * bytecode/PredictedType.h:
        * bytecode/StructureStubInfo.h:
        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::recordGetMethod):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::getMethodCheckPrediction):
        (JSC::DFG::Graph::getPrediction):
        (JSC::DFG::Graph::isConstant):
        (JSC::DFG::Graph::isJSConstant):
        (JSC::DFG::Graph::valueOfJSConstant):
        (JSC::DFG::Graph::valueOfInt32Constant):
        (JSC::DFG::Graph::valueOfNumberConstant):
        (JSC::DFG::Graph::valueOfBooleanConstant):
        (JSC::DFG::Graph::valueOfJSConstantNode):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillInteger):
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        (JSC::DFG::JITCodeGenerator::isKnownNotInteger):
        (JSC::DFG::JITCodeGenerator::isKnownNotNumber):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::silentSpillFPR):
        (JSC::DFG::JITCodeGenerator::silentFillGPR):
        (JSC::DFG::JITCodeGenerator::silentFillFPR):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::fillInt32ToInteger):
        (JSC::DFG::JITCompiler::fillToJS):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::hasConstant):
        (JSC::DFG::Node::hasIdentifier):
        (JSC::DFG::Node::hasMethodCheckData):
        (JSC::DFG::Node::methodCheckDataIndex):
        (JSC::DFG::Node::valueOfJSConstant):
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::propagateNode):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::fillSpeculateBoolean):
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        (JSC::PropertyStubCompilationInfo::PropertyStubCompilationInfo):
        (JSC::MethodCallCompilationInfo::MethodCallCompilationInfo):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::structureAddress):

2011-09-15  Adam Barth  <abarth@webkit.org>

        Rename ENABLE(DATABASE) to ENABLE(SQL_DATABASE)
        https://bugs.webkit.org/show_bug.cgi?id=68205

        Reviewed by Eric Seidel.

        * Configurations/FeatureDefines.xcconfig:
        * wtf/Platform.h:

2011-09-15  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (7/7)
        https://bugs.webkit.org/show_bug.cgi?id=68122

        Reviewed by Geoffrey Garen.

        Completed the seventh and final level of the refactoring to add finishCreation() 
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        JSCallbackObject was missed in previous patches due to the fact that 
        it's non-obvious (at least to my script) that it is in the JSCell hierarchy, so 
        this is just a bit of retroactive cleanup.

        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::create):
        * API/JSCallbackObjectFunctions.h:
        (JSC::::JSCallbackObject):

2011-09-15  Filip Pizlo  <fpizlo@apple.com>

        The DFG non-speculative JIT is no longer used and should be removed.
        https://bugs.webkit.org/show_bug.cgi?id=68177

        Reviewed by Geoffrey Garen.
        
        This removes the non-speculative JIT and everything that relied on it,
        including the ability to turn on DFG but not tiered compilation the,
        ability to perform speculation failure into non-speculative JIT code,
        and the ability to statically terminate speculation.

        * GNUmakefile.list.am:
        * JavaScriptCore.pro:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitLoopHint):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::getStrongPrediction):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGDriver.cpp:
        (JSC::DFG::compile):
        * dfg/DFGGenerationInfo.h:
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGJITCodeGenerator.cpp:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::linkOSRExits):
        (JSC::DFG::JITCompiler::compileBody):
        * dfg/DFGJITCompiler.h:
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp: Removed.
        * dfg/DFGNonSpeculativeJIT.h: Removed.
        * dfg/DFGOSREntry.cpp:
        (JSC::DFG::prepareOSREntry):
        * dfg/DFGPropagator.cpp:
        * dfg/DFGPropagator.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::osrExits):
        (JSC::DFG::SpeculativeJIT::speculationRecovery):
        (JSC::DFG::SpeculativeJIT::speculationCheck):
        (JSC::DFG::SpeculativeJIT::terminateSpeculativeExecution):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        * jit/JITCode.h:
        (JSC::JITCode::bottomTierJIT):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::~JSGlobalData):
        * runtime/JSGlobalData.h:
        * wtf/Platform.h:

2011-09-15  Eric Seidel  <eric@webkit.org>

        Remove ENABLE(SVG_AS_IMAGE) since all major ports have it on by default
        https://bugs.webkit.org/show_bug.cgi?id=68182

        Reviewed by Adam Barth.

        * Configurations/FeatureDefines.xcconfig:

2011-09-15  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT sometimes asserts that a value is not a number
        even when it doesn't know anything about the number
        https://bugs.webkit.org/show_bug.cgi?id=68189

        Reviewed by Oliver Hunt.

        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::GenerationInfo::isUnknownJS):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isKnownNotNumber):

2011-09-15  Filip Pizlo  <fpizlo@apple.com>

        All of the functionality in the non-speculative JIT should be
        available to the speculative JIT via helper methods
        https://bugs.webkit.org/show_bug.cgi?id=68186

        Reviewed by Oliver Hunt.
        
        Stole all of the goodness from NonSpeculativeJIT and placed it
        in JITCodeGenerator.  Left all of the badness (i.e. subtle code
        duplication with SpeculativeJIT, etc).  This is in preparation
        for removing the NonSpeculativeJIT entirely, but having its
        goodness available for reuse in the SpeculativeJIT if necessary.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::nonSpeculativeValueToNumber):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeValueToInt32):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeUInt32ToNumber):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeKnownConstantArithOp):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeBasicArithOp):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeArithMod):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeCheckHasInstance):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeInstanceOf):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::nonSpeculativeAdd):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeArithSub):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:

2011-09-15  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r95167.
        http://trac.webkit.org/changeset/95167
        https://bugs.webkit.org/show_bug.cgi?id=68191

        Patch needs further work. (Requested by mhahnenberg on
        #webkit).

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSCell.cpp:
        (JSC::JSCell::toBoolean):
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::toBoolean):
        * runtime/JSNotAnObject.cpp:
        (JSC::JSNotAnObject::toBoolean):
        * runtime/JSNotAnObject.h:
        * runtime/JSObject.h:
        * runtime/JSString.h:
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::toBoolean):

2011-09-15  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix for platforms that expect a linkable symbol
        for primitive static const's.

        * bytecode/CodeBlock.h:
        * jit/JIT.cpp:
        (JSC::JIT::emitOptimizationCheck):

2011-09-15  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix for assertion on existence of alternative
        CodeBlock.

        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::predictArgumentTypes):

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        Value profiles collect no information for global variables
        https://bugs.webkit.org/show_bug.cgi?id=68143

        Reviewed by Geoffrey Garen.
        
        17% speed-up on string-fasta.  Neutral elsewhere.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::getStrongPrediction):
        (JSC::DFG::ByteCodeParser::stronglyPredict):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_get_global_var):

2011-09-15  Eric Seidel  <eric@webkit.org>

        Remove ENABLE_SVG_ANIMATION as all major ports have it on by default
        https://bugs.webkit.org/show_bug.cgi?id=68022

        Reviewed by Ryosuke Niwa.

        * Configurations/FeatureDefines.xcconfig:

2011-09-15  Gavin Barraclough  <barraclough@apple.com>

        Ooops, revert accidentally commited unreviewed changes.

        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_jfalse):
        (JSC::JIT::emit_op_jtrue):
        * jit/JSInterfaceJIT.h:
        * runtime/JSValue.h:

2011-09-15  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r95163.
        http://trac.webkit.org/changeset/95163
        https://bugs.webkit.org/show_bug.cgi?id=68180

        [Qt] The QT_GCC_X variables were removed in Qt5 by accident.
        (Requested by darktears on #webkit).

        * JavaScriptCore.pro:

2011-09-15  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix p1.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_jfalse):
        (JSC::JIT::emit_op_jtrue):
        * jit/JSInterfaceJIT.h:
        * runtime/JSValue.h:

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        Tiered compilation should be enabled by default on platforms
        that support the DFG JIT
        https://bugs.webkit.org/show_bug.cgi?id=68136

        Reviewed by Sam Weinig.
        
        Neutral on SunSpider, 4% speed-up on V8, and 19% speed-up on
        Kraken.  Large progressions on some benchmarks, including
        3x on imaging-desaturate.

        * wtf/Platform.h:

2011-09-15  Gavin Barraclough  <barraclough@apple.com>

        devirtualize preventExtensions
        https://bugs.webkit.org/show_bug.cgi?id=68176

        Reviewed by Oliver Hunt.

        This is virtual due to problems in JSFunction putting the prototype
        property, but we can fix this problem a different way, just setting
        the checkReadOnly flag to false in the put.

        * runtime/JSFunction.cpp:
        (JSC::JSFunction::getOwnPropertySlot):
        * runtime/JSFunction.h:
        * runtime/JSObject.h:

2011-09-15  Geoffrey Garen  <ggaren@apple.com>

        Value chaining for JSValue32_64 bitops.

        Reviewed by Sam Weinig.
        
        SunSpider says 2.3% faster, v8 ~1% faster (mostly due to crypto).

        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitStoreAndMapInt32): New int32 helper function for stores
        that can chain their results, which is the common case.

        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emit_op_lshift):
        (JSC::JIT::emitRightShift):
        (JSC::JIT::emit_op_bitand):
        (JSC::JIT::emit_op_bitor):
        (JSC::JIT::emit_op_bitxor):
        (JSC::JIT::emit_op_bitnot):
        (JSC::JIT::emit_op_pre_inc):
        (JSC::JIT::emit_op_pre_dec): Deployed new function.
        (JSC::JIT::emit_op_post_inc):
        (JSC::JIT::emit_op_post_dec): Had to reorder these functions so they
        computed their result values last, to make them elligible for chaining.

2011-09-15  Adam Roben  <aroben@apple.com>

        Clang build fix after r95172

        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::shouldSpeculateFinalObject):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateArray):
        Added parentheses to make precendence clear.

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        DFG does not speculate aggressively enough on comparisons
        https://bugs.webkit.org/show_bug.cgi?id=68138

        Reviewed by Oliver Hunt.
        
        This is a 75% speed-up on Kraken/ai-astar.  It's a 1% win on
        V8 and an 8.5% win on Kraken.  Neutral on SunSpider.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compilePeepHoleDoubleBranch):
        (JSC::DFG::SpeculativeJIT::compilePeepHoleObjectEquality):
        (JSC::DFG::SpeculativeJIT::compileObjectEquality):
        (JSC::DFG::SpeculativeJIT::compare):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::shouldSpeculateFinalObject):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateArray):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateObject):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateCell):

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not leverage integer speculations on branches
        https://bugs.webkit.org/show_bug.cgi?id=68140

        Reviewed by Oliver Hunt.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isStrictInt32):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-09-14  Gavin Barraclough  <barraclough@apple.com>

        [n]stricteq code is bogus in JSValue32_64 JIT
        https://bugs.webkit.org/show_bug.cgi?id=68141

        Reviewed by Sam Weinig.

        The code tries to check for both ints or cells, but this check also
        catches cases where values that are undefined, null, etc (probably
        was incorrectly assuming cell was the 2nd highest tag?).

        Also, there is no need not to handle int on the fast path.
        stricteq is just a case of comparing the payloads, if we:
            * handle cases of differing tags on a slow path
            * handle doubles a slow path
            * handle both-are-string on a slow path

        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::compileOpStrictEq):
        (JSC::JIT::emitSlow_op_stricteq):
        (JSC::JIT::emitSlow_op_nstricteq):

2011-09-14  Mark Hahnenberg  <mhahnenberg@apple.com>

        Make JSCell::toBoolean non-virtual
        https://bugs.webkit.org/show_bug.cgi?id=67727

        Reviewed by Sam Weinig.

        JSCell::toBoolean now manually performs the toBoolean check for objects and strings (where 
        before it was simply virtual and would crash if its implementation was called). 
        Its descendants in JSObject and JSString have also been made non-virtual.  JSCell now
        explicitly covers all cases of toBoolean, so having a virtual implementation of 
        JSCell::toBoolean is no longer necessary.  This is part of a larger process of un-virtualizing JSCell.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        * runtime/JSNotAnObject.cpp:
        * runtime/JSNotAnObject.h:
        * runtime/JSObject.h:
        * runtime/JSString.h:
        (JSC::JSCell::toBoolean):
        (JSC::JSValue::toBoolean):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:

2011-09-14  Alexis Menard  <alexis.menard@openbossa.org>

        [Qt] Replace QT_GCC_X as they don't exist in Qt5 anymore.
        https://bugs.webkit.org/show_bug.cgi?id=68114

        Reviewed by Kenneth Rohde Christiansen.

        Use the new GCC_X variables defined in WebKit.pri to replace
        the usage of QT_GCC_X.

        * JavaScriptCore.pro:

2011-09-14  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r95145.
        http://trac.webkit.org/changeset/95145
        https://bugs.webkit.org/show_bug.cgi?id=68139

        The GTK+ build is working now, so revert this trial build fix.
        (Requested by mrobinson on #webkit).

        * GNUmakefile.list.am:

2011-09-14  Patrick Gansterer  <paroga@webkit.org>

        Port MachineStackMarker to Windows ARM and MIPS
        https://bugs.webkit.org/show_bug.cgi?id=68068

        Reviewed by Geoffrey Garen.

        Use the correct memeber of the CONTEXT struct for the stackpointer for CPU(ARM) and CPU(MIPS).
        Only query CONTEXT_INTEGER and CONTEXT_CONTROL, since CONTEXT_SEGMENTS isn't defined for
        CPU(ARM) and CPU(MIPS) and the stackpointer is defined in the CONTEXT_CONTROL section for
        CPU(ARM), CPU(X86) and CPU(X86_64) and in the CONTEXT_INTEGER section for CPU(MIPS).

        * heap/MachineStackMarker.cpp:
        (JSC::getPlatformThreadRegisters):
        (JSC::otherThreadStackPointer):

2011-09-12  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT always speculates that ValueAdd is a numeric addition
        https://bugs.webkit.org/show_bug.cgi?id=67956

        Reviewed by Geoffrey Garen.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isKnownNotNumber):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::shouldSpeculateNumber):

2011-09-14  Anders Carlsson  <andersca@apple.com>

        Stop building BinarySemaphore to see if that's what's breaking the GTK+ build.

        * GNUmakefile.list.am:

2011-09-14  Anders Carlsson  <andersca@apple.com>

        This is getting old. Yet another build fix attempt.

        * JavaScriptCore.vcproj/WTF/WTFCommon.vsprops:

2011-09-14  Anders Carlsson  <andersca@apple.com>

        Yet another build fix attempt.

        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:

2011-09-14  Anders Carlsson  <andersca@apple.com>

        How I &quot;love&quot; Visual Studio...

        Try to fix build again.

        * JavaScriptCore.vcproj/WTF/WTFCommon.vsprops:

2011-09-14  Anders Carlsson  <andersca@apple.com>

        Try to fix Windows build.

        * JavaScriptCore.vcproj/WTF/WTFCommon.vsprops:

2011-09-14  Anders Carlsson  <andersca@apple.com>

        Add BinarySemaphore class from WebKit2 to WTF
        https://bugs.webkit.org/show_bug.cgi?id=68132

        Reviewed by Sam Weinig.

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        Update build systems.

        * wtf/threads: Added.
        * wtf/threads/BinarySemaphore.cpp: Copied from Source/WebKit2/Platform/CoreIPC/BinarySemaphore.cpp.
        * wtf/threads/BinarySemaphore.h: Copied from Source/WebKit2/Platform/CoreIPC/BinarySemaphore.h.
        * wtf/threads/win: Added.
        * wtf/threads/win/BinarySemaphoreWin.cpp: Copied from Source/WebKit2/Platform/CoreIPC/win/BinarySemaphoreWin.cpp.

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix for Interpreter.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):

2011-09-14  Anders Carlsson  <andersca@apple.com>

        Add wtf/threads and wtf/threads/win, so we can be sure that the EWS
        bots can correctly build the patch in https://bugs.webkit.org/show_bug.cgi?id=68132

        Rubber-stamped by Sam Weinig.

        * wtf/threads: Added.
        * wtf/threads/win: Added.

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT should not speculate integer if the value is always going to be
        used as a double anyway
        https://bugs.webkit.org/show_bug.cgi?id=68127

        Reviewed by Oliver Hunt.
        
        Added a ValueToDouble node, which is a variant of ValueToNumber that
        hints that it will only be used as a double and never as an integer.
        Thus, it turns off integer speculation even if the value profiler
        told us that the value source is an int. The logic for converting a
        ValueToNumber into a ValueToDouble is found in Propagator.
        
        This appears to be a 22% speed-up in imaging-darkroom.

        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::fixpoint):
        (JSC::DFG::Propagator::toDouble):
        (JSC::DFG::Propagator::fixupNode):
        (JSC::DFG::Propagator::fixup):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        (JSC::DFG::SpeculativeJIT::computeValueRecoveryFor):

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        Tiered compilation heuristics do not account for value profile fullness
        https://bugs.webkit.org/show_bug.cgi?id=68116

        Reviewed by Oliver Hunt.
        
        Tiered compilation avoids invoking the DFG JIT if it finds that value
        profiles contain insufficient information. Instead, it produces a
        prediction from the current value profile, and then clears the value
        profile. This allows the value profile to heat up from scratch for
        some number of additional executions. The new profiles will then be
        merged with the previous prediction. Once the amount of information
        in predictions is enough according to heuristics in CodeBlock.cpp,
        DFG optimization is allowed to proceed.

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::CodeBlock):
        (JSC::CodeBlock::~CodeBlock):
        (JSC::CodeBlock::visitAggregate):
        (JSC::CodeBlock::visitWeakReferences):
        (JSC::CodeBlock::shouldOptimizeNow):
        (JSC::CodeBlock::dumpValueProfiles):
        * bytecode/CodeBlock.h:
        * bytecode/PredictedType.cpp:
        (JSC::predictionToString):
        * bytecode/PredictedType.h:
        * bytecode/ValueProfile.cpp: Added.
        (JSC::ValueProfile::computeStatistics):
        (JSC::ValueProfile::computeUpdatedPrediction):
        * bytecode/ValueProfile.h:
        (JSC::ValueProfile::ValueProfile):
        (JSC::ValueProfile::classInfo):
        (JSC::ValueProfile::numberOfSamples):
        (JSC::ValueProfile::totalNumberOfSamples):
        (JSC::ValueProfile::isLive):
        (JSC::ValueProfile::numberOfInt32s):
        (JSC::ValueProfile::numberOfDoubles):
        (JSC::ValueProfile::numberOfBooleans):
        (JSC::ValueProfile::dump):
        (JSC::getValueProfileBytecodeOffset):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::stronglyPredict):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::exitSpeculativeWithOSR):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        * jit/JIT.cpp:
        (JSC::JIT::emitOptimizationCheck):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitValueProfilingSite):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        DFG should not speculate that the child of LogicalNot is a boolean if
        predictions tell us otherwise
        https://bugs.webkit.org/show_bug.cgi?id=68118

        Reviewed by Geoffrey Garen.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::nonSpeculativeLogicalNot):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-09-14  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix.  Turn off tiered compilation.

        * wtf/Platform.h:

2011-09-13  Filip Pizlo  <fpizlo@apple.com>

        Prediction tracking is not precise enough
        https://bugs.webkit.org/show_bug.cgi?id=67993

        Reviewed by Oliver Hunt.
        
        Added a richer set of type predictions, including JSFinalObject, JSString,
        object that is not a JSFinalObject or JSArray (ObjectOther), some object
        but we don't or care know what kind (SomeObject), definitely an object,
        cell that is not an object or JSString, an value that is none of the above
        (so either Undefined or Null). Made the propagator and value profiler work
        with the new types.
        
        Performance is neutral, because the DFG JIT does not take advantage of this
        new knowledge yet.
        
        In the process of writing predictionToString() (which is now considerably
        more complex) I decided to finally add a BoundsCheckedPointer, which
        should come in handy in other places, like at least the OSR scratch buffer
        and the CompactJITCodeMap. It's great for cases where you want to
        do pointer arithmetic, you want to have assertions about the
        pointer not going out of bounds, but you don't want to write those
        assertions yourself.
        
        This also required refactoring inherits(), since the ValueProfiler may
        want to do the equivalent of inherits() but given two ClassInfo's.

        * GNUmakefile.list.am:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/PredictedType.cpp: Added.
        (JSC::predictionToString):
        (JSC::makePrediction):
        (JSC::predictionFromValue):
        * bytecode/PredictedType.h:
        (JSC::isCellPrediction):
        (JSC::isObjectPrediction):
        (JSC::isFinalObjectPrediction):
        (JSC::isStringPrediction):
        (JSC::mergePredictions):
        * bytecode/ValueProfile.h:
        (JSC::ValueProfile::numberOfObjects):
        (JSC::ValueProfile::numberOfFinalObjects):
        (JSC::ValueProfile::numberOfStrings):
        (JSC::ValueProfile::probabilityOfObject):
        (JSC::ValueProfile::probabilityOfFinalObject):
        (JSC::ValueProfile::probabilityOfString):
        (JSC::ValueProfile::dump):
        (JSC::ValueProfile::Statistics::Statistics):
        (JSC::ValueProfile::computeStatistics):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::stronglyPredict):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::predict):
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::propagateNode):
        * runtime/ClassInfo.h:
        (JSC::ClassInfo::isSubClassOf):
        * runtime/JSObject.h:
        (JSC::JSCell::inherits):
        * wtf/BoundsCheckedPointer.h: Added.
        (WTF::BoundsCheckedPointer::BoundsCheckedPointer):
        (WTF::BoundsCheckedPointer::operator=):
        (WTF::BoundsCheckedPointer::operator+=):
        (WTF::BoundsCheckedPointer::operator-=):
        (WTF::BoundsCheckedPointer::operator+):
        (WTF::BoundsCheckedPointer::operator-):
        (WTF::BoundsCheckedPointer::operator++):
        (WTF::BoundsCheckedPointer::operator--):
        (WTF::BoundsCheckedPointer::operator<):
        (WTF::BoundsCheckedPointer::operator<=):
        (WTF::BoundsCheckedPointer::operator>):
        (WTF::BoundsCheckedPointer::operator>=):
        (WTF::BoundsCheckedPointer::operator==):
        (WTF::BoundsCheckedPointer::operator!=):
        (WTF::BoundsCheckedPointer::operator!):
        (WTF::BoundsCheckedPointer::get):
        (WTF::BoundsCheckedPointer::operator*):
        (WTF::BoundsCheckedPointer::operator[]):
        (WTF::BoundsCheckedPointer::strcat):
        (WTF::BoundsCheckedPointer::validate):
        * wtf/CMakeLists.txt:

2011-09-14  Csaba Osztrogonác  <ossy@webkit.org>

        [Qt] Win32 builds with threads turned off
        https://bugs.webkit.org/show_bug.cgi?id=67864

        Reviewed by Geoffrey Garen.

        * JavaScriptCore.pri: Link pthread library on Windows platform.
        * wtf/Platform.h: Enable multiple threads.

2011-09-14  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (6/7)
        https://bugs.webkit.org/show_bug.cgi?id=67692

        Reviewed by Geoffrey Garen.

        Completed the sixth level of the refactoring to add finishCreation() 
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        This primarily consists of pushing the calls to finishCreation() down 
        into the constructors of the subclasses of the fifth level of the hierarchy 
        as well as pulling the finishCreation() calls out into the class's corresponding
        create() method if it has one.  Doing both simultaneously allows us to 
        maintain the invariant that the finishCreation() method chain is called exactly 
        once during the creation of an object, since calling it any other number of 
        times (0, 2, or more) will cause an assertion failure.

        * API/JSCallbackFunction.cpp:
        (JSC::JSCallbackFunction::JSCallbackFunction):
        * API/JSCallbackFunction.h:
        (JSC::JSCallbackFunction::create):
        * jsc.cpp:
        (GlobalObject::create):
        (GlobalObject::GlobalObject):
        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        * runtime/ArrayConstructor.h:
        (JSC::ArrayConstructor::create):
        * runtime/BooleanConstructor.cpp:
        (JSC::BooleanConstructor::BooleanConstructor):
        * runtime/BooleanConstructor.h:
        (JSC::BooleanConstructor::create):
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        * runtime/BooleanPrototype.h:
        (JSC::BooleanPrototype::create):
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        * runtime/DateConstructor.h:
        (JSC::DateConstructor::create):
        * runtime/DatePrototype.cpp:
        (JSC::DatePrototype::DatePrototype):
        * runtime/DatePrototype.h:
        (JSC::DatePrototype::create):
        * runtime/Error.cpp:
        (JSC::StrictModeTypeErrorFunction::StrictModeTypeErrorFunction):
        (JSC::StrictModeTypeErrorFunction::create):
        * runtime/ErrorConstructor.cpp:
        (JSC::ErrorConstructor::ErrorConstructor):
        * runtime/ErrorConstructor.h:
        (JSC::ErrorConstructor::create):
        * runtime/FunctionConstructor.cpp:
        (JSC::FunctionConstructor::FunctionConstructor):
        * runtime/FunctionConstructor.h:
        (JSC::FunctionConstructor::create):
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::FunctionPrototype):
        * runtime/FunctionPrototype.h:
        (JSC::FunctionPrototype::create):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::create):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        (JSC::NativeErrorPrototype::finishCreation):
        * runtime/NativeErrorPrototype.h:
        (JSC::NativeErrorPrototype::create):
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::NumberConstructor):
        * runtime/NumberConstructor.h:
        (JSC::NumberConstructor::create):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        * runtime/NumberPrototype.h:
        (JSC::NumberPrototype::create):
        * runtime/ObjectConstructor.cpp:
        (JSC::ObjectConstructor::ObjectConstructor):
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::create):
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructor::RegExpConstructor):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::create):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        * runtime/RegExpPrototype.h:
        (JSC::RegExpPrototype::create):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        * runtime/StringConstructor.h:
        (JSC::StringConstructor::create):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::create):
        (JSC::StringObjectThatMasqueradesAsUndefined::StringObjectThatMasqueradesAsUndefined):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::create):

2011-09-13  Eric Seidel  <eric@webkit.org>

        Remove ENABLE_SVG_USE as <use> is required by HTML5
        https://bugs.webkit.org/show_bug.cgi?id=68019

        Reviewed by Ryosuke Niwa.

        * Configurations/FeatureDefines.xcconfig:

2011-09-14  Iain Merrick  <husky@google.com>

        HashTraits.h should include template specialization for WTF::String
        https://bugs.webkit.org/show_bug.cgi?id=67851

        Ensure that the template specialization for HashTraits<String> is always
        picked up. (Previously it was possible to include HashSet and String but
        not the correct HashTraits, so you would get an inefficient template
        instantiation.)

        Reviewed by Darin Adler.

        * wtf/HashTraits.h:
        * wtf/text/StringHash.h:

2011-09-13  Filip Pizlo  <fpizlo@apple.com>

        SpeculativeJIT::shouldSpeculateInteger(NodeIndex, NodeIndex) should
        return false if either node can be double
        https://bugs.webkit.org/show_bug.cgi?id=67985

        Reviewed by Geoffrey Garen.
        
        This is a 17% speed-up on 3d-cube.
        
        This required allowing us to check if a constant is double but not
        integer, and making the shouldSpeculateInteger() check test for
        any hints of doubly-ness in its operands. This also required
        changing some terminology: previously "isDouble" often meant
        "isDouble or isInt32".  Now "isDouble" means exactly what the name
        suggests, and "isNumber" means "isDouble or isInt32".

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::toNumber):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::isJSFormat):
        (JSC::DFG::isJSInteger):
        (JSC::DFG::isJSDouble):
        (JSC::DFG::isJSCell):
        (JSC::DFG::isJSBoolean):
        (JSC::DFG::GenerationInfo::isJSFormat):
        (JSC::DFG::GenerationInfo::isJSInteger):
        (JSC::DFG::GenerationInfo::isJSDouble):
        (JSC::DFG::GenerationInfo::isJSCell):
        (JSC::DFG::GenerationInfo::isJSBoolean):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::isNumberConstant):
        (JSC::DFG::Graph::valueOfNumberConstant):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillInteger):
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        (JSC::DFG::JITCodeGenerator::isKnownInteger):
        (JSC::DFG::JITCodeGenerator::isKnownNumeric):
        (JSC::DFG::JITCodeGenerator::isKnownCell):
        (JSC::DFG::JITCodeGenerator::isKnownNotInteger):
        (JSC::DFG::JITCodeGenerator::isKnownBoolean):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::silentFillFPR):
        (JSC::DFG::JITCodeGenerator::isNumberConstant):
        (JSC::DFG::JITCodeGenerator::valueOfNumberConstant):
        (JSC::DFG::JITCodeGenerator::initConstantInfo):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::fillToJS):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::isNumberConstant):
        (JSC::DFG::JITCompiler::valueOfNumberConstant):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::isDoubleConstant):
        (JSC::DFG::Node::isNumberConstant):
        (JSC::DFG::Node::valueOfNumberConstant):
        (JSC::DFG::Node::hasNumberResult):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isInteger):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateDouble):
        (JSC::DFG::SpeculativeJIT::shouldNotSpeculateInteger):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateInteger):

2011-09-13  Anders Carlsson  <andersca@apple.com>

        Disable C++ exceptions when building with clang
        https://bugs.webkit.org/show_bug.cgi?id=68031
        <rdar://problem/9556880>

        Reviewed by Mark Rowe.

        * Configurations/Base.xcconfig:

2011-09-13  Eric Seidel  <eric@webkit.org>

        Remove ENABLE_SVG_FOREIGN_OBJECT as it is a required part of HTML5
        https://bugs.webkit.org/show_bug.cgi?id=68018

        Reviewed by Ryosuke Niwa.

        * Configurations/FeatureDefines.xcconfig:

2011-09-13  Sam Weinig  <sam@webkit.org>

        Object.getPrototypeOf should use JSValue::get()
        https://bugs.webkit.org/show_bug.cgi?id=67973

        Reviewed by Darin Adler.

        * runtime/ObjectConstructor.cpp:
        (JSC::objectConstructorGetPrototypeOf):
        Pipe through JSValue::get() to allow overrides.

2011-09-12  Filip Pizlo  <fpizlo@apple.com>

        JavaScriptCore does not have baseline->speculative OSR
        https://bugs.webkit.org/show_bug.cgi?id=67920

        Reviewed by Oliver Hunt.
        
        This adds the ability to on-stack-replace (OSR) from code that is
        running hot in the old JIT to code compiled by the new JIT.  This
        ensures that long-running loops benefit from DFG optimization.
        It also ensures that if code experiences a speculation failure
        in DFG code, it has an opportunity to reenter the DFG once every
        1,000 loop iterations or so.
        
        This results in a 2.88x speed-up on Kraken/imaging-desaturate,
        and is a pure win on the main three benchmark suites (SunSpider,
        V8, Kraken), when tiered compilation is enabled.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        (JSC::CodeBlock::CodeBlock):
        (JSC::ProgramCodeBlock::compileOptimized):
        (JSC::EvalCodeBlock::compileOptimized):
        (JSC::FunctionCodeBlock::compileOptimized):
        * bytecode/CodeBlock.h:
        * bytecode/Opcode.h:
        * bytecode/PredictedType.h: Added.
        (JSC::isCellPrediction):
        (JSC::isArrayPrediction):
        (JSC::isInt32Prediction):
        (JSC::isDoublePrediction):
        (JSC::isNumberPrediction):
        (JSC::isBooleanPrediction):
        (JSC::isStrongPrediction):
        (JSC::predictionToString):
        (JSC::mergePredictions):
        (JSC::mergePrediction):
        (JSC::makePrediction):
        * bytecode/PredictionTracker.h: Added.
        (JSC::operandIsArgument):
        (JSC::PredictionSlot::PredictionSlot):
        (JSC::PredictionTracker::PredictionTracker):
        (JSC::PredictionTracker::initializeSimilarTo):
        (JSC::PredictionTracker::copyLocalsFrom):
        (JSC::PredictionTracker::numberOfArguments):
        (JSC::PredictionTracker::numberOfVariables):
        (JSC::PredictionTracker::argumentIndexForOperand):
        (JSC::PredictionTracker::predictArgument):
        (JSC::PredictionTracker::predict):
        (JSC::PredictionTracker::predictGlobalVar):
        (JSC::PredictionTracker::getArgumentPrediction):
        (JSC::PredictionTracker::getPrediction):
        (JSC::PredictionTracker::getGlobalVarPrediction):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitLoopHint):
        * bytecompiler/BytecodeGenerator.h:
        * bytecompiler/NodesCodegen.cpp:
        (JSC::DoWhileNode::emitBytecode):
        (JSC::WhileNode::emitBytecode):
        (JSC::ForNode::emitBytecode):
        (JSC::ForInNode::emitBytecode):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGCapabilities.h:
        (JSC::DFG::canCompileOpcode):
        * dfg/DFGDriver.cpp:
        (JSC::DFG::compile):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::BasicBlock::BasicBlock):
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::getPrediction):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::exitSpeculativeWithOSR):
        (JSC::DFG::JITCompiler::compileEntry):
        (JSC::DFG::JITCompiler::compileBody):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::noticeOSREntry):
        * dfg/DFGNode.h:
        * dfg/DFGOSREntry.cpp: Added.
        (JSC::DFG::predictionIsValid):
        (JSC::DFG::prepareOSREntry):
        * dfg/DFGOSREntry.h: Added.
        (JSC::DFG::prepareOSREntry):
        * dfg/DFGPredictionTracker.h: Removed.
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::mergeUse):
        (JSC::DFG::Propagator::mergePrediction):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/CompactJITCodeMap.h:
        (JSC::CompactJITCodeMap::numberOfEntries):
        (JSC::CompactJITCodeMap::decode):
        (JSC::CompactJITCodeMap::Decoder::Decoder):
        (JSC::CompactJITCodeMap::Decoder::numberOfEntriesRemaining):
        (JSC::CompactJITCodeMap::Decoder::read):
        * jit/JIT.cpp:
        (JSC::JIT::emitOptimizationCheck):
        (JSC::JIT::emitTimeoutCheck):
        (JSC::JIT::privateCompileMainPass):
        * jit/JIT.h:
        (JSC::JIT::emit_op_loop_hint):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileForCallInternal):
        (JSC::FunctionExecutable::compileForConstructInternal):

2011-09-12  Sam Weinig  <sam@webkit.org>

        Don't allow setting __proto__ to be a getter or setter
        https://bugs.webkit.org/show_bug.cgi?id=67982

        Reviewed by Gavin Barraclough.

        * runtime/JSObject.cpp:
        (JSC::JSObject::defineGetter):
        (JSC::JSObject::defineSetter):
        Disallow setting a getter or setter on __proto__.

2011-09-12  James Robinson  <jamesr@chromium.org>

        Unreviewed build fix for chromium.

        Guard access to UString::latin1() with USE(JSC) since it is defined in JavaScriptCore/runtime/UString.cpp, which
        is currently only compiled in by ports that use JavaScriptCore.  This code is currently unreachable in builds so
        no change in functionality.

        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::Interpreter::CharAccess::CharAccess):

2011-09-09  Filip Pizlo  <fpizlo@apple.com>

        JavaScriptCore does not have speculative->baseline OSR
        https://bugs.webkit.org/show_bug.cgi?id=67826

        Reviewed by Oliver Hunt.
        
        This adds the ability to bail out of DFG speculative JIT execution by
        performing an on-stack replacement (OSR) that results in the control
        flow going to the equivalent code generated by the old JIT.
        
        This required a number of new features, as well as taking advantage of
        some features that happened to already be present:
        
        We already had a policy of storing the bytecode index for which a DFG
        node was generated inside the DFG::Node class. This was previously
        called exceptionInfo. It's now renamed to codeOrigin to reflect that
        it's used for more than just excpetions. OSR uses this to figure out
        which bytecode index to use to look up the machine code location in
        the code generated by the old JIT that we should be jumping to.
        
        CodeBlock now stores a mapping between bytecode indices and machine
        code offsets for code generated by the old JIT. This is implemented
        by CompactJITCodeMap, which tries to compress this data a bit.  The
        OSR compiler decodes this and uses it to find the machine code
        locations it should be jumping to.
        
        We already had a mechanism that emitted SetLocal nodes in the DFG graph
        that told us the time at which the old JIT would have stored something
        into its register file, and the DFG::Node that corresponds to the value
        that it would have stored. These SetLocal's were mostly dead-code-
        eliminated, but our DCE leaves the nodes intact except for making them
        have 0 as the ref count. This allows the OSR compiler to construct a
        mapping between the state as it would have been seen by the old JIT
        and the state as the DFG JIT sees it. The OSR compiler uses this to
        generate code that reshapes the call frame so that it is like what the
        old JIT would expect.
        
        Finally, when DFG_OSR is enabled (the default for TIERED_COMPILATION)
        we no longer emit the non-speculative path.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.h:
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::currentCodeOrigin):
        (JSC::DFG::ByteCodeParser::addToGraph):
        * dfg/DFGGPRInfo.h:
        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::GenerationInfo::alive):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::appendCallWithExceptionCheck):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::exitSpeculativeWithOSR):
        (JSC::DFG::JITCompiler::linkOSRExits):
        (JSC::DFG::JITCompiler::compileBody):
        (JSC::DFG::JITCompiler::link):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::CallRecord::CallRecord):
        (JSC::DFG::JITCompiler::notifyCall):
        (JSC::DFG::JITCompiler::appendCallWithExceptionCheck):
        (JSC::DFG::JITCompiler::appendCallWithFastExceptionCheck):
        (JSC::DFG::JITCompiler::addJSCall):
        (JSC::DFG::JITCompiler::JSCallRecord::JSCallRecord):
        * dfg/DFGNode.h:
        (JSC::DFG::CodeOrigin::CodeOrigin):
        (JSC::DFG::CodeOrigin::isSet):
        (JSC::DFG::CodeOrigin::bytecodeIndex):
        (JSC::DFG::Node::Node):
        (JSC::DFG::Node::child1Unchecked):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::ValueSource::dump):
        (JSC::DFG::ValueRecovery::dump):
        (JSC::DFG::OSRExit::OSRExit):
        (JSC::DFG::SpeculativeJIT::compile):
        (JSC::DFG::SpeculativeJIT::compileMovHint):
        (JSC::DFG::SpeculativeJIT::computeValueRecoveryFor):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::ValueSource::ValueSource):
        (JSC::DFG::ValueSource::isSet):
        (JSC::DFG::ValueSource::nodeIndex):
        (JSC::DFG::ValueRecovery::ValueRecovery):
        (JSC::DFG::ValueRecovery::alreadyInRegisterFile):
        (JSC::DFG::ValueRecovery::inGPR):
        (JSC::DFG::ValueRecovery::inFPR):
        (JSC::DFG::ValueRecovery::displacedInRegisterFile):
        (JSC::DFG::ValueRecovery::constant):
        (JSC::DFG::ValueRecovery::technique):
        (JSC::DFG::ValueRecovery::gpr):
        (JSC::DFG::ValueRecovery::fpr):
        (JSC::DFG::ValueRecovery::virtualRegister):
        (JSC::DFG::OSRExit::numberOfRecoveries):
        (JSC::DFG::OSRExit::valueRecovery):
        (JSC::DFG::OSRExit::isArgument):
        (JSC::DFG::OSRExit::argumentForIndex):
        (JSC::DFG::OSRExit::variableForIndex):
        (JSC::DFG::OSRExit::operandForIndex):
        (JSC::DFG::SpeculativeJIT::osrExits):
        (JSC::DFG::SpeculativeJIT::speculationCheck):
        (JSC::DFG::SpeculativeJIT::valueSourceForOperand):
        (JSC::DFG::SpeculativeJIT::setNodeIndexForOperand):
        (JSC::DFG::SpeculativeJIT::valueSourceReferenceForOperand):
        (JSC::DFG::SpeculativeJIT::computeValueRecoveryFor):
        (JSC::DFG::SpeculationCheckIndexIterator::SpeculationCheckIndexIterator):
        (JSC::DFG::SpeculativeJIT::SpeculativeJIT):
        * jit/CompactJITCodeMap.h: Added.
        (JSC::BytecodeAndMachineOffset::BytecodeAndMachineOffset):
        (JSC::BytecodeAndMachineOffset::getBytecodeIndex):
        (JSC::BytecodeAndMachineOffset::getMachineCodeOffset):
        (JSC::CompactJITCodeMap::~CompactJITCodeMap):
        (JSC::CompactJITCodeMap::decode):
        (JSC::CompactJITCodeMap::CompactJITCodeMap):
        (JSC::CompactJITCodeMap::at):
        (JSC::CompactJITCodeMap::decodeNumber):
        (JSC::CompactJITCodeMap::Encoder::Encoder):
        (JSC::CompactJITCodeMap::Encoder::~Encoder):
        (JSC::CompactJITCodeMap::Encoder::append):
        (JSC::CompactJITCodeMap::Encoder::finish):
        (JSC::CompactJITCodeMap::Encoder::appendByte):
        (JSC::CompactJITCodeMap::Encoder::encodeNumber):
        (JSC::CompactJITCodeMap::Encoder::ensureCapacityFor):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::~JSGlobalData):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::osrScratchBufferForSize):
        * runtime/JSValue.cpp:
        (JSC::JSValue::description):

2011-09-12  Geoffrey Garen  <ggaren@apple.com>

        Re-enabled ENABLE(LAZY_BLOCK_FREEING).
        
        Reviewed by Stephanie Lewis.

        I accidentally disabled this in r94890, causing a big performance regression.

        * wtf/Platform.h:

2011-09-12  Michael Saboff  <msaboff@apple.com>

        Broken Build for ARM - lshift32() needs TrustedImm32 arg
        https://bugs.webkit.org/show_bug.cgi?id=67965

        Change lshift32(16, ARMRegisters::S1); to lshift32(TrustedImm32(16), ARMRegisters::S1);

        Reviewed by Anders Carlsson.

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::branch16):

2011-09-12  Michael Saboff  <msaboff@apple.com>

        Broken ARM build - missing semicolon in JavaScriptCore/assembler/MacroAssemblerARM.h
        https://bugs.webkit.org/show_bug.cgi?id=67961

        Added missing semicolon.

        Reviewed by Ryosuke Niwa.

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::branch16):

2011-09-12  Michael Saboff  <msaboff@apple.com>

        Update RegExp and related classes to use 8 bit strings when available
        https://bugs.webkit.org/show_bug.cgi?id=67337

        Modified both the Yarr interpreter and JIT to handle 8 bit subject strings.
        The code paths are triggered by the UString::is8bit() method which currently
        returns false.  Implemented JIT changes for all current architectures.
        Tested X86_64 and ARM v7.

        This includes some code that will likely change as we complete the
        8 bit string changes.  This includes the way the raw buffer pointers
        are accessed as well as replacing the CharAccess class with a
        string interator returned from UString.

        Fixed build breakage in testRegExp.cpp due to globalObject construction
        changes.

        Reviewed by Gavin Barraclough.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * testRegExp.cpp:
        (GlobalObject::finishCreation):
        (GlobalObject::GlobalObject):
        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::baseIndexTransfer32):
        * assembler/ARMAssembler.h:
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::ubfx):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::twoWordOp12Reg40Imm3Reg4Imm20Imm5):
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::load8):
        (JSC::MacroAssemblerARM::branch8):
        (JSC::MacroAssemblerARM::branch16):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::load8):
        (JSC::MacroAssemblerARMv7::branch16):
        (JSC::MacroAssemblerARMv7::branch8):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::load8):
        (JSC::MacroAssemblerMIPS::branch8):
        (JSC::MacroAssemblerMIPS::branch16):
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::load8):
        (JSC::MacroAssemblerSH4::branch8):
        (JSC::MacroAssemblerSH4::branch16):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::load8):
        (JSC::MacroAssemblerX86Common::branch16):
        (JSC::MacroAssemblerX86Common::branch8):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::extub):
        (JSC::SH4Assembler::printInstr):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::cmpw_ir):
        (JSC::X86Assembler::movzbl_mr):
        * runtime/RegExp.cpp:
        (JSC::RegExp::compile):
        (JSC::RegExp::compileIfNecessary):
        (JSC::RegExp::match):
        (JSC::RegExp::matchCompareWithInterpreter):
        * runtime/RegExp.h:
        * runtime/UString.h:
        (JSC::UString::is8Bit):
        * yarr/Yarr.h:
        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::Interpreter::CharAccess::CharAccess):
        (JSC::Yarr::Interpreter::CharAccess::~CharAccess):
        (JSC::Yarr::Interpreter::CharAccess::operator[]):
        (JSC::Yarr::Interpreter::InputStream::InputStream):
        (JSC::Yarr::Interpreter::Interpreter):
        (JSC::Yarr::interpret):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::jumpIfCharNotEquals):
        (JSC::Yarr::YarrGenerator::readCharacter):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterOnce):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterFixed):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterGreedy):
        (JSC::Yarr::YarrGenerator::backtrackPatternCharacterNonGreedy):
        (JSC::Yarr::YarrGenerator::generateCharacterClassFixed):
        (JSC::Yarr::YarrGenerator::generateDotStarEnclosure):
        (JSC::Yarr::YarrGenerator::YarrGenerator):
        (JSC::Yarr::YarrGenerator::compile):
        (JSC::Yarr::jitCompile):
        (JSC::Yarr::execute):
        * yarr/YarrJIT.h:
        (JSC::Yarr::YarrCodeBlock::has8BitCode):
        (JSC::Yarr::YarrCodeBlock::has16BitCode):
        (JSC::Yarr::YarrCodeBlock::set8BitCode):
        (JSC::Yarr::YarrCodeBlock::set16BitCode):
        (JSC::Yarr::YarrCodeBlock::execute):
        * yarr/YarrParser.h:
        (JSC::Yarr::Parser::Parser):

2011-09-12  Andras Becsi  <andras.becsi@nokia.com>

        [Qt] Build fails after r94920 with strict compiler
        https://bugs.webkit.org/show_bug.cgi?id=67928

        Reviewed by Csaba Osztrogonác.

        * wtf/RedBlackTree.h:
        (WTF::RedBlackTree::insert): Remove dead variables updateStart and newSubTreeRoot.

2011-09-12  Patrick Gansterer  <paroga@webkit.org>

        Unreviewed build fix after r94871.

        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * wtf/FastMalloc.cpp:
        * wtf/RefCountedLeakCounter.h:

2011-09-11  Filip Pizlo  <fpizlo@apple.com>

        DFGNode.h has macros that indicate the enabling of a feature, but
        they do not use the ENABLE() idiom.
        https://bugs.webkit.org/show_bug.cgi?id=67907

        Reviewed by Oliver Hunt.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::stronglyPredict):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGJITCodeGenerator.cpp:
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillInt32ToInteger):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        (JSC::DFG::JITCompiler::compileBody):
        (JSC::DFG::JITCompiler::link):
        * dfg/DFGJITCompiler.h:
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::fixpoint):
        (JSC::DFG::Propagator::propagateNode):
        (JSC::DFG::Propagator::propagateForward):
        (JSC::DFG::Propagator::propagateBackward):
        (JSC::DFG::propagate):
        * dfg/DFGScoreBoard.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::terminateSpeculativeExecution):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):

2011-09-11  Fumitoshi Ukai  <ukai@chromium.org>

        Unreviewed build fix for chromium/mac & clang.

        Fix the macro redefinition error by r94927, because chromium set
        ENABLE_JSC_MULTIPLE_THREADS=0 in WebKit/chromium/features.gypi and
        it is not PLATFORM(QT).
         ../../JavaScriptCore/wtf/Platform.h:512:9: error: 'ENABLE_JSC_MULTIPLE_THREADS' macro redefined [-Werror]
         #define ENABLE_JSC_MULTIPLE_THREADS 1
         <command line>:43:9: note: previous definition is here
         #define ENABLE_JSC_MULTIPLE_THREADS 0
         1 error generated.

        * wtf/Platform.h:

2011-09-11  Sam Weinig  <sam@webkit.org>

        Remove JSCell::isPropertyNameIterator(), it is unused
        https://bugs.webkit.org/show_bug.cgi?id=67911

        Reviewed by Oliver Hunt.

        * runtime/JSCell.h:
        * runtime/JSPropertyNameIterator.h:

2011-09-11  Sam Weinig  <sam@webkit.org>

        De-virtualize JSCell::isAPIValueWrapper
        https://bugs.webkit.org/show_bug.cgi?id=67909

        Reviewed by Oliver Hunt.

        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        Set the correct type on structure creation.

        * runtime/JSCell.h:
        Remove virtual keyword and default implementation.

        * runtime/JSType.h:
        Add type for APIValueWrapper. It must come after CompoundType since
        the APIValueWrapper has children in need of marking.

        * runtime/Structure.h:
        (JSC::JSCell::isAPIValueWrapper):
        Implement predicate using type info.

2011-09-10  Sam Weinig  <sam@webkit.org>

        De-virtualize JSCell::isGetterSetter, type information is available for it
        https://bugs.webkit.org/show_bug.cgi?id=67902

        Reviewed by Dan Bernstein.

        * runtime/GetterSetter.cpp:
        * runtime/GetterSetter.h:
        Remove override of isGetterSetter.

        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        De-virtualize and remove silly base implementation.

        * runtime/Structure.h:
        (JSC::JSCell::isGetterSetter):
        Use type info to determine getter-setter-hood.

2011-09-09  Oliver Hunt  <oliver@apple.com>

        Remove support for anonymous storage from jsobjects
        https://bugs.webkit.org/show_bug.cgi?id=67881

        Reviewed by Sam Weinig.

        Remove all use of anonymous slots, essentially a mechanical change
        in JavaScriptCore

        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::createStructure):
        * API/JSCallbackFunction.h:
        (JSC::JSCallbackFunction::createStructure):
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::createStructure):
        * JavaScriptCore.exp:
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::createStructure):
        * heap/MarkStack.cpp:
        (JSC::MarkStack::validateValue):
        * heap/MarkStack.h:
        * runtime/Arguments.h:
        (JSC::Arguments::createStructure):
        * runtime/ArrayConstructor.h:
        (JSC::ArrayConstructor::createStructure):
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::finishCreation):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::createStructure):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::createStructure):
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        * runtime/BooleanPrototype.h:
        (JSC::BooleanPrototype::createStructure):
        * runtime/DateConstructor.h:
        (JSC::DateConstructor::createStructure):
        * runtime/DateInstance.h:
        (JSC::DateInstance::createStructure):
        * runtime/DatePrototype.cpp:
        (JSC::DatePrototype::DatePrototype):
        * runtime/DatePrototype.h:
        (JSC::DatePrototype::createStructure):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::createStructure):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::finishCreation):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::createStructure):
        * runtime/ExceptionHelpers.h:
        (JSC::InterruptedExecutionError::createStructure):
        (JSC::TerminatedExecutionError::createStructure):
        * runtime/Executable.h:
        (JSC::ExecutableBase::createStructure):
        (JSC::NativeExecutable::createStructure):
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/FunctionPrototype.h:
        (JSC::FunctionPrototype::createStructure):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/InternalFunction.h:
        (JSC::InternalFunction::createStructure):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSActivation.h:
        (JSC::JSActivation::createStructure):
        * runtime/JSArray.h:
        (JSC::JSArray::createStructure):
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::createStructure):
        * runtime/JSCell.h:
        * runtime/JSFunction.h:
        (JSC::JSFunction::createStructure):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::finishCreation):
        (JSC::JSGlobalObject::createStructure):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::createStructure):
        * runtime/JSONObject.h:
        (JSC::JSONObject::createStructure):
        * runtime/JSObject.h:
        (JSC::JSObject::createStructure):
        (JSC::JSNonFinalObject::createStructure):
        (JSC::JSFinalObject::createStructure):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::create):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::createStructure):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::createStructure):
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::createStructure):
        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::createStructure):
        * runtime/MathObject.h:
        (JSC::MathObject::createStructure):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::createStructure):
        * runtime/NumberConstructor.h:
        (JSC::NumberConstructor::createStructure):
        * runtime/NumberObject.h:
        (JSC::NumberObject::createStructure):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        * runtime/NumberPrototype.h:
        (JSC::NumberPrototype::createStructure):
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::createStructure):
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::finishCreation):
        * runtime/ObjectPrototype.h:
        (JSC::ObjectPrototype::createStructure):
        * runtime/RegExp.h:
        (JSC::RegExp::createStructure):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::createStructure):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::createStructure):
        * runtime/RegExpPrototype.h:
        (JSC::RegExpPrototype::createStructure):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::createStructure):
        * runtime/StrictEvalActivation.h:
        (JSC::StrictEvalActivation::createStructure):
        * runtime/StringConstructor.h:
        (JSC::StringConstructor::createStructure):
        * runtime/StringObject.h:
        (JSC::StringObject::createStructure):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::createStructure):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::createStructure):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::materializePropertyMap):
        (JSC::Structure::addPropertyTransitionToExistingStructure):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::removePropertyTransition):
        (JSC::Structure::changePrototypeTransition):
        (JSC::Structure::despecifyFunctionTransition):
        (JSC::Structure::getterSetterTransition):
        (JSC::Structure::toDictionaryTransition):
        (JSC::Structure::preventExtensionsTransition):
        (JSC::Structure::flattenDictionaryStructure):
        (JSC::Structure::addPropertyWithoutTransition):
        (JSC::Structure::removePropertyWithoutTransition):
        (JSC::Structure::get):
        (JSC::Structure::putSpecificValue):
        (JSC::Structure::remove):
        (JSC::Structure::checkConsistency):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::Structure::propertyStorageSize):
        (JSC::Structure::get):
        * runtime/StructureChain.h:
        (JSC::StructureChain::createStructure):

2011-09-11  Jarred Nicholls  <jarred@sencha.com>

        [Qt] Win32 build broken due to MachineStackMarker.cpp/.o failing to link against pthreads library
        https://bugs.webkit.org/show_bug.cgi?id=67864
        
        Qt Win32 is not pthread compatible and cannot participate in multithreaded JSC or it fails to build.

        Reviewed by Csaba Osztrogonác.

        * wtf/Platform.h:

2011-09-11  Filip Pizlo  <fpizlo@apple.com>

        ARM and MIPS assemblers still refer to executable pools.
        https://bugs.webkit.org/show_bug.cgi?id=67903

        Reviewed by Csaba Osztrogonác.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::executableCopy):
        * assembler/ARMAssembler.h:
        * assembler/AssemblerBufferWithConstantPool.h:
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::executableCopy):

2011-09-08  Filip Pizlo  <fpizlo@apple.com>

        The executable allocator makes it difficult to free individual
        chunks of executable memory
        https://bugs.webkit.org/show_bug.cgi?id=66363

        Reviewed by Oliver Hunt.
        
        Introduced a best-fit, balanced-tree based allocator. The allocator
        required a balanced tree that does not allocate memory and that
        permits the removal of individual nodes directly (as opposed to by
        key); neither AVLTree nor WebCore's PODRedBlackTree supported this.
        Changed all references to executable code to use a reference counted
        handle.

        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::executableCopy):
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::LinkBuffer):
        (JSC::LinkBuffer::finalizeCode):
        (JSC::LinkBuffer::linkCode):
        * assembler/MacroAssemblerCodeRef.h:
        (JSC::MacroAssemblerCodeRef::MacroAssemblerCodeRef):
        (JSC::MacroAssemblerCodeRef::createSelfManagedCodeRef):
        (JSC::MacroAssemblerCodeRef::executableMemory):
        (JSC::MacroAssemblerCodeRef::code):
        (JSC::MacroAssemblerCodeRef::size):
        (JSC::MacroAssemblerCodeRef::operator!):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::executableCopy):
        (JSC::X86Assembler::X86InstructionFormatter::executableCopy):
        * bytecode/CodeBlock.h:
        * bytecode/Instruction.h:
        * bytecode/StructureStubInfo.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compile):
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::generateProtoChainAccessStub):
        (JSC::DFG::tryCacheGetByID):
        (JSC::DFG::tryBuildGetByIDList):
        (JSC::DFG::tryBuildGetByIDProtoList):
        (JSC::DFG::tryCachePutByID):
        * jit/ExecutableAllocator.cpp:
        (JSC::ExecutableAllocator::initializeAllocator):
        (JSC::ExecutableAllocator::ExecutableAllocator):
        (JSC::ExecutableAllocator::allocate):
        (JSC::ExecutableAllocator::committedByteCount):
        (JSC::ExecutableAllocator::dumpProfile):
        * jit/ExecutableAllocator.h:
        (JSC::ExecutableAllocator::dumpProfile):
        * jit/ExecutableAllocatorFixedVMPool.cpp:
        (JSC::ExecutableAllocator::initializeAllocator):
        (JSC::ExecutableAllocator::ExecutableAllocator):
        (JSC::ExecutableAllocator::isValid):
        (JSC::ExecutableAllocator::underMemoryPressure):
        (JSC::ExecutableAllocator::allocate):
        (JSC::ExecutableAllocator::committedByteCount):
        (JSC::ExecutableAllocator::dumpProfile):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        (JSC::JIT::compileCTIMachineTrampolines):
        (JSC::JIT::compileCTINativeCall):
        * jit/JITCode.h:
        (JSC::JITCode::operator !):
        (JSC::JITCode::addressForCall):
        (JSC::JITCode::offsetOf):
        (JSC::JITCode::execute):
        (JSC::JITCode::start):
        (JSC::JITCode::size):
        (JSC::JITCode::getExecutableMemory):
        (JSC::JITCode::HostFunction):
        (JSC::JITCode::JITCode):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::emitSlow_op_get_by_val):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::emitSlow_op_get_by_val):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::JITThunks):
        (JSC::DEFINE_STUB_FUNCTION):
        (JSC::getPolymorphicAccessStructureListSlot):
        (JSC::JITThunks::ctiStub):
        (JSC::JITThunks::hostFunctionStub):
        * jit/JITStubs.h:
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::SpecializedThunkJIT):
        (JSC::SpecializedThunkJIT::finalize):
        * jit/ThunkGenerators.cpp:
        (JSC::charCodeAtThunkGenerator):
        (JSC::charAtThunkGenerator):
        (JSC::fromCharCodeThunkGenerator):
        (JSC::sqrtThunkGenerator):
        (JSC::floorThunkGenerator):
        (JSC::ceilThunkGenerator):
        (JSC::roundThunkGenerator):
        (JSC::expThunkGenerator):
        (JSC::logThunkGenerator):
        (JSC::absThunkGenerator):
        (JSC::powThunkGenerator):
        * jit/ThunkGenerators.h:
        * runtime/Executable.h:
        (JSC::NativeExecutable::create):
        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::dumpSampleData):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::getCTIStub):
        * wtf/CMakeLists.txt:
        * wtf/MetaAllocator.cpp: Added.
        (WTF::MetaAllocatorHandle::MetaAllocatorHandle):
        (WTF::MetaAllocatorHandle::~MetaAllocatorHandle):
        (WTF::MetaAllocatorHandle::shrink):
        (WTF::MetaAllocator::MetaAllocator):
        (WTF::MetaAllocator::allocate):
        (WTF::MetaAllocator::currentStatistics):
        (WTF::MetaAllocator::findAndRemoveFreeSpace):
        (WTF::MetaAllocator::addFreeSpaceFromReleasedHandle):
        (WTF::MetaAllocator::addFreshFreeSpace):
        (WTF::MetaAllocator::debugFreeSpaceSize):
        (WTF::MetaAllocator::addFreeSpace):
        (WTF::MetaAllocator::incrementPageOccupancy):
        (WTF::MetaAllocator::decrementPageOccupancy):
        (WTF::MetaAllocator::roundUp):
        (WTF::MetaAllocator::allocFreeSpaceNode):
        (WTF::MetaAllocator::freeFreeSpaceNode):
        (WTF::MetaAllocator::dumpProfile):
        * wtf/MetaAllocator.h: Added.
        (WTF::MetaAllocator::bytesAllocated):
        (WTF::MetaAllocator::bytesReserved):
        (WTF::MetaAllocator::bytesCommitted):
        (WTF::MetaAllocator::dumpProfile):
        (WTF::MetaAllocator::~MetaAllocator):
        * wtf/MetaAllocatorHandle.h: Added.
        * wtf/RedBlackTree.h: Added.
        (WTF::RedBlackTree::Node::Node):
        (WTF::RedBlackTree::Node::successor):
        (WTF::RedBlackTree::Node::predecessor):
        (WTF::RedBlackTree::Node::reset):
        (WTF::RedBlackTree::Node::parent):
        (WTF::RedBlackTree::Node::setParent):
        (WTF::RedBlackTree::Node::left):
        (WTF::RedBlackTree::Node::setLeft):
        (WTF::RedBlackTree::Node::right):
        (WTF::RedBlackTree::Node::setRight):
        (WTF::RedBlackTree::Node::color):
        (WTF::RedBlackTree::Node::setColor):
        (WTF::RedBlackTree::RedBlackTree):
        (WTF::RedBlackTree::insert):
        (WTF::RedBlackTree::remove):
        (WTF::RedBlackTree::findExact):
        (WTF::RedBlackTree::findLeastGreaterThanOrEqual):
        (WTF::RedBlackTree::findGreatestLessThanOrEqual):
        (WTF::RedBlackTree::first):
        (WTF::RedBlackTree::last):
        (WTF::RedBlackTree::size):
        (WTF::RedBlackTree::isEmpty):
        (WTF::RedBlackTree::treeMinimum):
        (WTF::RedBlackTree::treeMaximum):
        (WTF::RedBlackTree::treeInsert):
        (WTF::RedBlackTree::leftRotate):
        (WTF::RedBlackTree::rightRotate):
        (WTF::RedBlackTree::removeFixup):
        * wtf/wtf.pri:
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::compile):
        * yarr/YarrJIT.h:
        (JSC::Yarr::YarrCodeBlock::execute):
        (JSC::Yarr::YarrCodeBlock::getAddr):

2011-09-10  Sam Weinig  <sam@webkit.org>

        Remove JSC::isZombie() function, it did nothing and was called by no-one.
        https://bugs.webkit.org/show_bug.cgi?id=67901

        Reviewed by Andy Estes.

        * JavaScriptCore.exp:
        * runtime/JSCell.cpp:
        * runtime/JSValue.h:

2011-09-10  Sam Weinig  <sam@webkit.org>

        Add isInterruptedExecutionException and isTerminatedExecutionException predicates
        https://bugs.webkit.org/show_bug.cgi?id=67892

        Reviewed by Andy "First Time Reviewer" Estes.

        * JavaScriptCore.exp:
        Add symbols.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::throwException):
        Use new predicates.

        * runtime/ExceptionHelpers.cpp:
        (JSC::createInterruptedExecutionException):
        (JSC::isInterruptedExecutionException):
        (JSC::createTerminatedExecutionException):
        (JSC::isTerminatedExecutionException):
        * runtime/ExceptionHelpers.h:
        (JSC::InterruptedExecutionError::InterruptedExecutionError):
        Add predicates.

2011-09-10  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT completely undoes speculative compilation even in the case of
        a partial static speculation failure
        https://bugs.webkit.org/show_bug.cgi?id=67798

        Reviewed by Geoffrey Garen.
        
        This is a regression with static speculation, so it is turned off by
        default.  But it is a necessary prerequisite for further work on
        dynamic speculation.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::clearGenerationInfo):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::terminateSpeculativeExecution):

2011-09-09  Chris Marrin  <cmarrin@apple.com>

        requestAnimationFrame doesn't throttle on Mac
        https://bugs.webkit.org/show_bug.cgi?id=67171

        Reviewed by Simon Fraser.

        Added WTF_USE_REQUEST_ANIMATION_FRAME_TIMER to allow any platform to run
        requestAnimationFrame callbacks on a Timer defined in ScriptedAnimationController.
        Currently only enabled for PLATFORM(MAC)

        * wtf/Platform.h:

2011-09-09  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Dan Bernstein.

        Removed ENABLE(SINGLE_THREADED) support, since it is always false
        https://bugs.webkit.org/show_bug.cgi?id=67862

        Next step toward making the baseline platform assumption that threads exist.

        * wtf/wtf.pri:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj: Removed references to
        ThreadingNone.cpp, which was only compiled in single-threaded mode.

        * wtf/Platform.h:
        * wtf/ThreadSpecific.h:
        (WTF::::destroy):
        * wtf/qt/ThreadingQt.cpp: Removed now-dead code.

        * wtf/ThreadingNone.cpp: Removed.

2011-09-09  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (5/7)
        https://bugs.webkit.org/show_bug.cgi?id=67420

        Reviewed by Geoffrey Garen.

        Completed the fifth level of the refactoring to add finishCreation() 
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        This primarily consists of pushing the calls to finishCreation() down 
        into the constructors of the subclasses of the second level of the hierarchy 
        as well as pulling the finishCreation() calls out into the class's corresponding
        create() method if it has one.  Doing both simultaneously allows us to 
        maintain the invariant that the finishCreation() method chain is called exactly 
        once during the creation of an object, since calling it any other number of 
        times (0, 2, or more) will cause an assertion failure.

        * API/JSCallbackConstructor.cpp:
        (JSC::JSCallbackConstructor::JSCallbackConstructor):
        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::create):
        * API/JSCallbackFunction.cpp:
        (JSC::JSCallbackFunction::JSCallbackFunction):
        (JSC::JSCallbackFunction::finishCreation):
        * API/JSCallbackFunction.h:
        * API/JSCallbackObject.h:
        * API/JSCallbackObjectFunctions.h:
        (JSC::::JSCallbackObject):
        (JSC::::finishCreation):
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * debugger/DebuggerActivation.cpp:
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::create):
        * jsc.cpp:
        (GlobalObject::finishCreation):
        (GlobalObject::GlobalObject):
        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        (JSC::ArrayConstructor::finishCreation):
        * runtime/ArrayConstructor.h:
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::ArrayPrototype):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::create):
        * runtime/BooleanConstructor.cpp:
        (JSC::BooleanConstructor::BooleanConstructor):
        (JSC::BooleanConstructor::finishCreation):
        * runtime/BooleanConstructor.h:
        * runtime/BooleanObject.cpp:
        (JSC::BooleanObject::BooleanObject):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::create):
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        (JSC::BooleanPrototype::finishCreation):
        * runtime/BooleanPrototype.h:
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        (JSC::DateConstructor::finishCreation):
        * runtime/DateConstructor.h:
        * runtime/DateInstance.cpp:
        (JSC::DateInstance::DateInstance):
        * runtime/DateInstance.h:
        (JSC::DateInstance::create):
        * runtime/DatePrototype.cpp:
        (JSC::DatePrototype::DatePrototype):
        (JSC::DatePrototype::finishCreation):
        * runtime/DatePrototype.h:
        * runtime/Error.cpp:
        (JSC::StrictModeTypeErrorFunction::StrictModeTypeErrorFunction):
        * runtime/ErrorConstructor.cpp:
        (JSC::ErrorConstructor::ErrorConstructor):
        (JSC::ErrorConstructor::finishCreation):
        * runtime/ErrorConstructor.h:
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::create):
        * runtime/FunctionConstructor.cpp:
        (JSC::FunctionConstructor::FunctionConstructor):
        (JSC::FunctionConstructor::finishCreation):
        * runtime/FunctionConstructor.h:
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::FunctionPrototype):
        (JSC::FunctionPrototype::finishCreation):
        * runtime/FunctionPrototype.h:
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        * runtime/InternalFunction.h:
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation):
        * runtime/JSActivation.h:
        (JSC::JSActivation::create):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::create):
        (JSC::JSGlobalObject::JSGlobalObject):
        * runtime/JSONObject.cpp:
        (JSC::JSONObject::JSONObject):
        * runtime/JSONObject.h:
        (JSC::JSONObject::create):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::create):
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        * runtime/JSString.cpp:
        (JSC::StringObject::create):
        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):
        * runtime/MathObject.h:
        (JSC::MathObject::create):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::finishCreation):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        (JSC::NativeErrorPrototype::finishCreation):
        * runtime/NativeErrorPrototype.h:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::NumberConstructor):
        (JSC::NumberConstructor::finishCreation):
        * runtime/NumberConstructor.h:
        * runtime/NumberObject.cpp:
        (JSC::NumberObject::NumberObject):
        * runtime/NumberObject.h:
        (JSC::NumberObject::create):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        (JSC::NumberPrototype::finishCreation):
        * runtime/NumberPrototype.h:
        * runtime/ObjectConstructor.cpp:
        (JSC::ObjectConstructor::ObjectConstructor):
        (JSC::ObjectConstructor::finishCreation):
        * runtime/ObjectConstructor.h:
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructor::RegExpConstructor):
        (JSC::RegExpConstructor::finishCreation):
        (JSC::RegExpMatchesArray::RegExpMatchesArray):
        * runtime/RegExpConstructor.h:
        * runtime/RegExpMatchesArray.h:
        (JSC::RegExpMatchesArray::create):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::create):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        (JSC::StringConstructor::finishCreation):
        * runtime/StringConstructor.h:
        * runtime/StringObject.cpp:
        (JSC::StringObject::StringObject):
        * runtime/StringObject.h:
        (JSC::StringObject::create):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::StringObjectThatMasqueradesAsUndefined):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        (JSC::StringPrototype::finishCreation):
        * runtime/StringPrototype.h:

2011-09-09  Geoffrey Garen  <ggaren@apple.com>

        Build fix: Guard against double-#define for something already #defined
        by the build system.

        * wtf/Platform.h:

2011-09-09  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Dan Bernstein.

        Never #define ENABLE_SINGLE_THREADED, !ENABLE_JSC_MULTIPLE_THREADS, or
        !ENABLE_WTF_MULTIPLE_THREADS
        https://bugs.webkit.org/show_bug.cgi?id=67860

        First step toward making the baseline platform assumption that threads
        exist: Never #define ENABLE_SINGLE_THREADED, !ENABLE_JSC_MULTIPLE_THREADS,
        or !ENABLE_WTF_MULTIPLE_THREADS.

        * wtf/Platform.h:

2011-09-09  Laszlo Gombos  <laszlo.1.gombos@nokia.com>

        [Qt] Remove common.pri
        https://bugs.webkit.org/show_bug.cgi?id=67814

        Reviewed by Andreas Kling.

        * JavaScriptCore.pri:

2011-09-08  Mark Hahnenberg  <mhahnenberg@apple.com>

        REGRESSION(r94811): Assertion failure in 2 worker tests
        https://bugs.webkit.org/show_bug.cgi?id=67829

        Reviewed by Sam Weinig.

        Fixing a couple tests that were broken due to the wrong values being 
        set in the parent class pointers in the ClassInfo structs for 
        TerminatedExecutionError and InterruptedExecutionError.

        * runtime/ExceptionHelpers.cpp:

2011-09-08  Oliver Hunt  <oliver@apple.com>

        Use bump allocator for initial property storage
        https://bugs.webkit.org/show_bug.cgi?id=67494

        Reviewed by Geoffrey Garen.

        Use a bump allocator for initial allocation of property storage,
        and promote to fastMalloc memory only if it survives a GC pass.

        Comes out as a 1% win on v8, and is a useful step on the way to
        GC allocation of all property storage.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Heap.cpp:
        (JSC::Heap::collect):
        * heap/Heap.h:
        (JSC::Heap::allocatePropertyStorage):
        (JSC::Heap::inPropertyStorageNursery):
        * heap/MarkedBlock.h:
        * heap/NewSpace.cpp:
        (JSC::NewSpace::NewSpace):
        * heap/NewSpace.h:
        (JSC::NewSpace::resetPropertyStorageNursery):
        (JSC::NewSpace::allocatePropertyStorage):
        (JSC::NewSpace::inPropertyStorageNursery):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSObject.cpp:
        (JSC::JSObject::allocatePropertyStorage):
        * runtime/JSObject.h:
        (JSC::JSObject::isUsingInlineStorage):
        (JSC::JSObject::JSObject):
        (JSC::JSObject::propertyStorage):
        (JSC::JSObject::~JSObject):
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::putDirectWithoutTransition):
        (JSC::JSObject::putDirectFunctionWithoutTransition):
        (JSC::JSObject::transitionTo):
        (JSC::JSObject::visitChildrenDirect):
        * runtime/StorageBarrier.h: Added.
        (JSC::StorageBarrier::StorageBarrier):
        (JSC::StorageBarrier::set):
        (JSC::StorageBarrier::operator->):
        (JSC::StorageBarrier::operator*):
        (JSC::StorageBarrier::operator[]):
        (JSC::StorageBarrier::get):

2011-09-08  Sam Weinig  <sam@webkit.org>

        Remove the Completion object from JSC, I have never liked it
        https://bugs.webkit.org/show_bug.cgi?id=67755

        Reviewed by Gavin Barraclough.

        - Removes the Completion object and replaces its use with out parameter exceptions.
        - Remove ComplType and virtual exceptionType() function on JSObject. Replace with
          ClassInfo for InterruptedExecutionError and TerminatedExecutionError.

        * API/JSBase.cpp:
        (JSEvaluateScript):
        (JSCheckScriptSyntax):
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::throwException):
        * jsc.cpp:
        (functionLoad):
        (functionCheckSyntax):
        (runWithScripts):
        (runInteractive):
        * runtime/Completion.cpp:
        (JSC::checkSyntax):
        (JSC::evaluate):
        * runtime/Completion.h:
        * runtime/ExceptionHelpers.cpp:
        (JSC::InterruptedExecutionError::toString):
        (JSC::TerminatedExecutionError::toString):
        (JSC::createInterruptedExecutionException):
        * runtime/ExceptionHelpers.h:
        (JSC::InterruptedExecutionError::InterruptedExecutionError):
        (JSC::InterruptedExecutionError::create):
        (JSC::InterruptedExecutionError::createStructure):
        (JSC::TerminatedExecutionError::TerminatedExecutionError):
        (JSC::TerminatedExecutionError::create):
        (JSC::TerminatedExecutionError::createStructure):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSObject.h:

2011-09-08  Ryosuke Niwa  <rniwa@webkit.org>

        Build fix.

        * dfg/DFGCapabilities.cpp:

2011-09-08  Filip Pizlo  <fpizlo@apple.com>

        Value profling and execution count profiling is performed even for
        code that cannot be optimized
        https://bugs.webkit.org/show_bug.cgi?id=67694

        Reviewed by Gavin Barraclough.
        
        This is a 2% speed-up on V8 when tiered compilation is enabled.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.cpp:
        (JSC::ProgramCodeBlock::canCompileWithDFG):
        (JSC::EvalCodeBlock::canCompileWithDFG):
        (JSC::FunctionCodeBlock::canCompileWithDFG):
        * bytecode/CodeBlock.h:
        * dfg/DFGCapabilities.cpp: Added.
        (JSC::DFG::canCompileOpcodes):
        * dfg/DFGCapabilities.h: Added.
        (JSC::DFG::mightCompileEval):
        (JSC::DFG::mightCompileProgram):
        (JSC::DFG::mightCompileFunctionForCall):
        (JSC::DFG::mightCompileFunctionForConstruct):
        (JSC::DFG::canCompileOpcode):
        (JSC::DFG::canCompileEval):
        (JSC::DFG::canCompileProgram):
        (JSC::DFG::canCompileFunctionForCall):
        (JSC::DFG::canCompileFunctionForConstruct):
        * jit/JIT.cpp:
        (JSC::JIT::emitOptimizationCheck):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        (JSC::JIT::shouldEmitProfiling):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitValueProfilingSite):

2011-09-08  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT does not initialize integer tags for PredictInt32 temporaries
        https://bugs.webkit.org/show_bug.cgi?id=67840

        Reviewed by Gavin Barraclough.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::initializeVariableTypes):

2011-09-08  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        https://bugs.webkit.org/show_bug.cgi?id=67771

        Fix sequenceGetByIdSlowCaseInstructionSpace, sequenceGetByIdSlowCaseConstantSpace
        and patchOffsetGetByIdSlowCaseCall
        and enables DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS flag for SH4 platforms.

        Reviewed by Gavin Barraclough.

        * jit/JIT.h:
        * wtf/dtoa/utils.h:

2011-09-08  Mark Hahnenberg  <mhahnenberg@apple.com>

        Remove getUInt32 from JSCell
        https://bugs.webkit.org/show_bug.cgi?id=67691

        Reviewed by Oliver Hunt.

         We don't use JSCell::getUInt32 anymore, so it has been removed.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:

2011-09-07  Filip Pizlo  <fpizlo@apple.com>

        PPC build fix.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::~CodeBlock):

2011-09-07  Oliver Hunt  <oliver@apple.com>

        Release mode build fix.

        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::create):

2011-09-06  Oliver Hunt  <oliver@apple.com>

        Remove JSObjectWithGlobalObject
        https://bugs.webkit.org/show_bug.cgi?id=67689

        Reviewed by Geoff Garen.

        Remove JSObjectWithGlobalObject, and update code to stop using anonymous
        storage to access the global object that a JSObject comes from.  Largely
        mechanical change to remove the use of anonymous storage and JSObjectWithGlobalObject.

        * API/JSCallbackConstructor.cpp:
        (JSC::JSCallbackConstructor::JSCallbackConstructor):
        (JSC::JSCallbackConstructor::finishCreation):
        * API/JSCallbackConstructor.h:
        * API/JSCallbackObject.cpp:
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::create):
        * API/JSCallbackObjectFunctions.h:
        (JSC::::JSCallbackObject):
        (JSC::::finishCreation):
        (JSC::::staticFunctionGetter):
        * API/JSClassRef.cpp:
        (OpaqueJSClass::prototype):
        * API/JSObjectRef.cpp:
        (JSObjectMake):
        (JSObjectGetPrivate):
        (JSObjectSetPrivate):
        (JSObjectGetPrivateProperty):
        (JSObjectSetPrivateProperty):
        (JSObjectDeletePrivateProperty):
        * API/JSValueRef.cpp:
        (JSValueIsObjectOfClass):
        * API/JSWeakObjectMapRefPrivate.cpp:
        * JavaScriptCore.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgRepatchGetMethodFast):
        (JSC::DFG::tryCacheGetMethod):
        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitAllocateJSFunction):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::patchMethodCallProto):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/DatePrototype.cpp:
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        (JSC::InternalFunction::finishCreation):
        * runtime/InternalFunction.h:
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::finishCreation):
        * runtime/JSFunction.h:
        (JSC::JSFunction::create):
        (JSC::JSFunction::createStructure):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSONObject.cpp:
        (JSC::JSONObject::JSONObject):
        (JSC::JSONObject::finishCreation):
        * runtime/JSONObject.h:
        * runtime/JSObject.h:
        (JSC::JSObject::globalObject):
        * runtime/JSObjectWithGlobalObject.cpp: Removed.
        * runtime/JSObjectWithGlobalObject.h: Removed.
        * runtime/JSValue.cpp:
        (JSC::JSValue::isValidCallee):
        * runtime/Lookup.cpp:
        (JSC::setUpStaticFunctionSlot):
        * runtime/Lookup.h:
        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):
        (JSC::MathObject::finishCreation):
        * runtime/MathObject.h:
        * runtime/NumberPrototype.cpp:
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        (JSC::RegExpObject::finishCreation):
        * runtime/RegExpObject.h:
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::Structure::globalObject):

2011-09-07  Gavin Barraclough  <barraclough@apple.com>

        Refactor JIT checks for ObjectType into helper functions.

        Rubber stamped by Sam Weinig.

        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::branchIfNotObject):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JIT.h:
        * jit/JITCall32_64.cpp:
        (JSC::JIT::emit_op_ret_object_or_this):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitJumpIfNotObject):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_instanceof):
        (JSC::JIT::emit_op_ret_object_or_this):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_create_this):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_instanceof):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_create_this):

2011-09-07  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r94627 and r94632.
        http://trac.webkit.org/changeset/94627
        http://trac.webkit.org/changeset/94632
        https://bugs.webkit.org/show_bug.cgi?id=67698

        It broke tests on GTK and Qt (Requested by Ossy on #webkit).

        * API/JSCallbackConstructor.cpp:
        (JSC::JSCallbackConstructor::JSCallbackConstructor):
        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::create):
        * API/JSCallbackFunction.cpp:
        (JSC::JSCallbackFunction::JSCallbackFunction):
        * API/JSCallbackFunction.h:
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::create):
        * debugger/DebuggerActivation.h:
        * jsc.cpp:
        (GlobalObject::constructorBody):
        (GlobalObject::GlobalObject):
        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        * runtime/ArrayConstructor.h:
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::ArrayPrototype):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::create):
        * runtime/BooleanConstructor.cpp:
        (JSC::BooleanConstructor::BooleanConstructor):
        * runtime/BooleanConstructor.h:
        * runtime/BooleanObject.cpp:
        (JSC::BooleanObject::BooleanObject):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::create):
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        * runtime/BooleanPrototype.h:
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        * runtime/DateConstructor.h:
        * runtime/DateInstance.cpp:
        (JSC::DateInstance::DateInstance):
        * runtime/DateInstance.h:
        (JSC::DateInstance::create):
        * runtime/DatePrototype.cpp:
        (JSC::DatePrototype::DatePrototype):
        * runtime/DatePrototype.h:
        * runtime/Error.cpp:
        (JSC::StrictModeTypeErrorFunction::StrictModeTypeErrorFunction):
        * runtime/ErrorConstructor.cpp:
        (JSC::ErrorConstructor::ErrorConstructor):
        * runtime/ErrorConstructor.h:
        (JSC::ErrorConstructor::create):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::create):
        * runtime/FunctionConstructor.cpp:
        (JSC::FunctionConstructor::FunctionConstructor):
        * runtime/FunctionConstructor.h:
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::FunctionPrototype):
        * runtime/FunctionPrototype.h:
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        * runtime/InternalFunction.h:
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation):
        * runtime/JSActivation.h:
        (JSC::JSActivation::create):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::create):
        (JSC::JSGlobalObject::JSGlobalObject):
        * runtime/JSONObject.cpp:
        (JSC::JSONObject::JSONObject):
        * runtime/JSONObject.h:
        (JSC::JSONObject::create):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::create):
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        * runtime/JSString.cpp:
        (JSC::StringObject::create):
        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):
        * runtime/MathObject.h:
        (JSC::MathObject::create):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::constructorBody):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        (JSC::NativeErrorPrototype::constructorBody):
        * runtime/NativeErrorPrototype.h:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::NumberConstructor):
        * runtime/NumberConstructor.h:
        * runtime/NumberObject.cpp:
        (JSC::NumberObject::NumberObject):
        * runtime/NumberObject.h:
        (JSC::NumberObject::create):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        * runtime/NumberPrototype.h:
        * runtime/ObjectConstructor.cpp:
        (JSC::ObjectConstructor::ObjectConstructor):
        * runtime/ObjectConstructor.h:
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructor::RegExpConstructor):
        (JSC::RegExpMatchesArray::RegExpMatchesArray):
        * runtime/RegExpConstructor.h:
        * runtime/RegExpMatchesArray.h:
        (JSC::RegExpMatchesArray::create):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::create):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        * runtime/StringConstructor.h:
        * runtime/StringObject.cpp:
        (JSC::StringObject::StringObject):
        * runtime/StringObject.h:
        (JSC::StringObject::create):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::StringObjectThatMasqueradesAsUndefined):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        * runtime/StringPrototype.h:

2011-09-06  Xianzhu Wang  <wangxianzhu@chromium.org>

        Replace usages of Vector<UChar> with existing StringBuilder
        https://bugs.webkit.org/show_bug.cgi?id=67079

        Reviewed by Gavin Barraclough.

        This is part of work to support 8-bit string buffers.
        Adds StringBuilder::characters() because the original Vector<UChar>::data()
        is widely used.
        Sets the minimum size of buffer to 16 to prevent possible performance
        regression. Further performance investigation should be done in
        https://bugs.webkit.org/show_bug.cgi?id=67084.

        * wtf/Forward.h:
        * wtf/text/StringBuilder.cpp:
        (WTF::StringBuilder::appendUninitialized): Sets minimum buffer size to 16 bytes.
        * wtf/text/StringBuilder.h:
        (WTF::StringBuilder::operator[]):
        (WTF::StringBuilder::characters): Added.

2011-09-06  Mark Hahnenberg  <mhahnenberg@apple.com>

        Fix broken snow leopard build
        https://bugs.webkit.org/show_bug.cgi?id=67693

        Reviewed by Daniel Bates.

        Removed unnecessary symbol export.

        * JavaScriptCore.exp:

2011-09-06  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not optimize booleans
        https://bugs.webkit.org/show_bug.cgi?id=67670

        Reviewed by Gavin Barraclough.
        
        This adds boolean value profiling, boolean prediction in the DFG,
        boolean forward flow propagation in the DFGPropagator, boolean
        data format in DFG generation info, and comprehensive optimizations
        based on both boolean prediction and boolean generation info.
        This is brings the speed-up on v8-richards to 12%, and gives slight
        speed-ups elsewhere as well.
        
        Making this work right required navigating some subtleties in
        value profiling.  Some functions get compiled with insufficient
        information because some important path of the function never
        executed.  In these cases, we wish to fall back on static
        speculation.  But to do so, we need to ensure that predictions that
        are inherent in the code (like that GetById almost certainly takes
        a cell operand) are reflected in predictions that we make in
        DFGPropagator.  Thus, DFGPropagator now does both backward and
        forward flow, using a both forward and backward fixpoint.
        
        The backward flow in DFGPropagator is a separate static analysis,
        and needs to keep a set of backward flow abstract values for
        variables, arguments, and globals.  To make this easy, this patch
        factors out DFGGraph's prediction tracking capability into
        DFGPredictionTracker, which now gets used by both DFGGraph (for
        forward flow predictions) and DFGPropagator (for backward flow
        predictions).  Backward flow predictions eventually get merged
        into forward flow ones, but the two are not equivalent: a forward
        flow prediction is a superset of the backward flow prediction.
        
        Debugging these prediction issues required a better understanding
        of where we fail speculation, and what our value predictions look
        like.  This patch also adds optional verbose speculation failure
        (so an informative printf fires whenever speculation failure occurs)
        and slight improvements to the verbosity in other places.

        * bytecode/ValueProfile.h:
        (JSC::ValueProfile::numberOfBooleans):
        (JSC::ValueProfile::probabilityOfBoolean):
        (JSC::ValueProfile::dump):
        (JSC::ValueProfile::computeStatistics):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::stronglyPredict):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::dataFormatToString):
        (JSC::DFG::needDataFormatConversion):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::Graph):
        (JSC::DFG::Graph::predictions):
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::predictGlobalVar):
        (JSC::DFG::Graph::getPrediction):
        (JSC::DFG::Graph::getGlobalVarPrediction):
        (JSC::DFG::Graph::isBooleanConstant):
        (JSC::DFG::Graph::valueOfBooleanConstant):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillInteger):
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        (JSC::DFG::JITCodeGenerator::isKnownNotInteger):
        (JSC::DFG::JITCodeGenerator::isKnownBoolean):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeCompareNull):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeCompare):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeStrictEq):
        (JSC::DFG::JITCodeGenerator::emitBranch):
        (JSC::DFG::JITCodeGenerator::speculationCheck):
        (JSC::DFG::GPRTemporary::GPRTemporary):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::isBooleanConstant):
        (JSC::DFG::JITCodeGenerator::valueOfBooleanConstant):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        (JSC::DFG::JITCompiler::link):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::debugCall):
        (JSC::DFG::JITCompiler::isBooleanConstant):
        (JSC::DFG::JITCompiler::valueOfBooleanConstant):
        * dfg/DFGNode.h:
        (JSC::DFG::isBooleanPrediction):
        (JSC::DFG::predictionToString):
        (JSC::DFG::mergePredictions):
        (JSC::DFG::makePrediction):
        (JSC::DFG::Node::isBooleanConstant):
        (JSC::DFG::Node::valueOfBooleanConstant):
        (JSC::DFG::Node::hasBooleanResult):
        (JSC::DFG::Node::hasNumericResult):
        (JSC::DFG::Node::predict):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGPredictionTracker.h: Added.
        (JSC::DFG::operandIsArgument):
        (JSC::DFG::PredictionSlot::PredictionSlot):
        (JSC::DFG::PredictionTracker::PredictionTracker):
        (JSC::DFG::PredictionTracker::initializeSimilarTo):
        (JSC::DFG::PredictionTracker::numberOfArguments):
        (JSC::DFG::PredictionTracker::numberOfVariables):
        (JSC::DFG::PredictionTracker::argumentIndexForOperand):
        (JSC::DFG::PredictionTracker::predictArgument):
        (JSC::DFG::PredictionTracker::predict):
        (JSC::DFG::PredictionTracker::predictGlobalVar):
        (JSC::DFG::PredictionTracker::getArgumentPrediction):
        (JSC::DFG::PredictionTracker::getPrediction):
        (JSC::DFG::PredictionTracker::getGlobalVarPrediction):
        * dfg/DFGPropagator.cpp:
        (JSC::DFG::Propagator::Propagator):
        (JSC::DFG::Propagator::fixpoint):
        (JSC::DFG::Propagator::setPrediction):
        (JSC::DFG::Propagator::mergeUse):
        (JSC::DFG::Propagator::mergePrediction):
        (JSC::DFG::Propagator::propagateNode):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::fillSpeculateBoolean):
        (JSC::DFG::SpeculativeJIT::compare):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculateBooleanOperand::SpeculateBooleanOperand):
        (JSC::DFG::SpeculateBooleanOperand::~SpeculateBooleanOperand):
        (JSC::DFG::SpeculateBooleanOperand::index):
        (JSC::DFG::SpeculateBooleanOperand::gpr):
        (JSC::DFG::SpeculateBooleanOperand::use):
        * runtime/JSGlobalData.h:
        * runtime/JSValue.cpp:
        (JSC::JSValue::description):

2011-09-06  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (5/7)
        https://bugs.webkit.org/show_bug.cgi?id=67420

        Reviewed by Geoffrey Garen.

        Completed the fifth level of the refactoring to add finishCreation() 
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        This primarily consists of pushing the calls to finishCreation() down 
        into the constructors of the subclasses of the second level of the hierarchy 
        as well as pulling the finishCreation() calls out into the class's corresponding
        create() method if it has one.  Doing both simultaneously allows us to 
        maintain the invariant that the finishCreation() method chain is called exactly 
        once during the creation of an object, since calling it any other number of 
        times (0, 2, or more) will cause an assertion failure.

        * API/JSCallbackConstructor.cpp:
        (JSC::JSCallbackConstructor::JSCallbackConstructor):
        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::create):
        * API/JSCallbackFunction.cpp:
        (JSC::JSCallbackFunction::JSCallbackFunction):
        (JSC::JSCallbackFunction::finishCreation):
        * API/JSCallbackFunction.h:
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * debugger/DebuggerActivation.cpp:
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::create):
        * jsc.cpp:
        (GlobalObject::finishCreation):
        (GlobalObject::GlobalObject):
        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        (JSC::ArrayConstructor::finishCreation):
        * runtime/ArrayConstructor.h:
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::ArrayPrototype):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::create):
        * runtime/BooleanConstructor.cpp:
        (JSC::BooleanConstructor::BooleanConstructor):
        (JSC::BooleanConstructor::finishCreation):
        * runtime/BooleanConstructor.h:
        * runtime/BooleanObject.cpp:
        (JSC::BooleanObject::BooleanObject):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::create):
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        (JSC::BooleanPrototype::finishCreation):
        * runtime/BooleanPrototype.h:
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        (JSC::DateConstructor::finishCreation):
        * runtime/DateConstructor.h:
        * runtime/DateInstance.cpp:
        (JSC::DateInstance::DateInstance):
        * runtime/DateInstance.h:
        (JSC::DateInstance::create):
        * runtime/DatePrototype.cpp:
        (JSC::DatePrototype::DatePrototype):
        (JSC::DatePrototype::finishCreation):
        * runtime/DatePrototype.h:
        * runtime/Error.cpp:
        (JSC::StrictModeTypeErrorFunction::StrictModeTypeErrorFunction):
        * runtime/ErrorConstructor.cpp:
        (JSC::ErrorConstructor::ErrorConstructor):
        (JSC::ErrorConstructor::finishCreation):
        * runtime/ErrorConstructor.h:
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::create):
        * runtime/FunctionConstructor.cpp:
        (JSC::FunctionConstructor::FunctionConstructor):
        (JSC::FunctionConstructor::finishCreation):
        * runtime/FunctionConstructor.h:
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::FunctionPrototype):
        (JSC::FunctionPrototype::finishCreation):
        * runtime/FunctionPrototype.h:
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        * runtime/InternalFunction.h:
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation):
        * runtime/JSActivation.h:
        (JSC::JSActivation::create):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::create):
        (JSC::JSGlobalObject::JSGlobalObject):
        * runtime/JSONObject.cpp:
        (JSC::JSONObject::JSONObject):
        * runtime/JSONObject.h:
        (JSC::JSONObject::create):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::create):
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        * runtime/JSString.cpp:
        (JSC::StringObject::create):
        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):
        * runtime/MathObject.h:
        (JSC::MathObject::create):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::finishCreation):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        (JSC::NativeErrorPrototype::finishCreation):
        * runtime/NativeErrorPrototype.h:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::NumberConstructor):
        (JSC::NumberConstructor::finishCreation):
        * runtime/NumberConstructor.h:
        * runtime/NumberObject.cpp:
        (JSC::NumberObject::NumberObject):
        * runtime/NumberObject.h:
        (JSC::NumberObject::create):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        (JSC::NumberPrototype::finishCreation):
        * runtime/NumberPrototype.h:
        * runtime/ObjectConstructor.cpp:
        (JSC::ObjectConstructor::ObjectConstructor):
        (JSC::ObjectConstructor::finishCreation):
        * runtime/ObjectConstructor.h:
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructor::RegExpConstructor):
        (JSC::RegExpConstructor::finishCreation):
        (JSC::RegExpMatchesArray::RegExpMatchesArray):
        * runtime/RegExpConstructor.h:
        * runtime/RegExpMatchesArray.h:
        (JSC::RegExpMatchesArray::create):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::create):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        (JSC::StringConstructor::finishCreation):
        * runtime/StringConstructor.h:
        * runtime/StringObject.cpp:
        (JSC::StringObject::StringObject):
        * runtime/StringObject.h:
        (JSC::StringObject::create):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::StringObjectThatMasqueradesAsUndefined):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        (JSC::StringPrototype::finishCreation):
        * runtime/StringPrototype.h:

2011-09-06  Filip Pizlo  <fpizlo@apple.com>

        Accessibility tests crashing in BasicRawSentinelNode code
        https://bugs.webkit.org/show_bug.cgi?id=67682

        Reviewed by Geoffrey Garen.
        
        A CodeBlock should ensure that no other CodeBlocks have references to it after
        it is destroyed.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::~CodeBlock):

2011-09-06  Yong Li  <yoli@rim.com>

        https://bugs.webkit.org/show_bug.cgi?id=67486
        This reverts r65993 which gives wrong results for rshift
        in some corner cases (see the test).

        Reviewed by Gavin Barraclough.

        New test: fast/js/floating-point-truncate-rshift.html

        * assembler/ARMAssembler.h:
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::supportsFloatingPointTruncate):
        (JSC::MacroAssemblerARM::branchTruncateDoubleToInt32):

2011-09-06  Filip Pizlo  <fpizlo@apple.com>

        Unreviewed build fix for r94559.
        
        Marked the relevant parameters as unused if !ENABLE(JIT), and surrounded
        new out-of-line JIT-specific method definitions with !ENABLE(JIT).

        * bytecode/CodeBlock.cpp:
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileForCallInternal):

2011-09-06  Mark Hahnenberg  <mhahnenberg@apple.com>

        Fix broken PPC build due to new dtoa library
        https://bugs.webkit.org/show_bug.cgi?id=67654

        Reviewed by Dan Bernstein.

        Added condition for PPC in the new dtoa compatibility check so that
        building won't fail.

        * wtf/dtoa/utils.h:

2011-09-05  Oliver Hunt  <oliver@apple.com>

        An object's structure should reference the global object responsible for its creation
        https://bugs.webkit.org/show_bug.cgi?id=67624

        Reviewed by Gavin Barraclough.

        Add a reference to a GlobalObject to Structure, and update all calls to
        Structure::create() to pass the global object that is the origin for that
        structure.  For objects where the appropriate global object isn't available
        at construction time (global object prototypes, etc), or objects that
        logically don't have a global object (strings, etc) we just pass null.

        This change is largely mechanical (passing a new globalObject parameter
        around).

        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::createStructure):
        * API/JSCallbackFunction.h:
        (JSC::JSCallbackFunction::createStructure):
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::createStructure):
        * API/JSContextRef.cpp:
        * JavaScriptCore.exp:
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::createStructure):
        * runtime/Arguments.h:
        (JSC::Arguments::createStructure):
        * runtime/ArrayConstructor.h:
        (JSC::ArrayConstructor::createStructure):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::createStructure):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::createStructure):
        * runtime/BooleanPrototype.h:
        (JSC::BooleanPrototype::createStructure):
        * runtime/DateConstructor.h:
        (JSC::DateConstructor::createStructure):
        * runtime/DateInstance.h:
        (JSC::DateInstance::createStructure):
        * runtime/DatePrototype.h:
        (JSC::DatePrototype::createStructure):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::createStructure):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::createStructure):
        * runtime/Executable.h:
        (JSC::ExecutableBase::createStructure):
        (JSC::NativeExecutable::createStructure):
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/FunctionPrototype.h:
        (JSC::FunctionPrototype::createStructure):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/InternalFunction.h:
        (JSC::InternalFunction::createStructure):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSActivation.h:
        (JSC::JSActivation::createStructure):
        * runtime/JSArray.h:
        (JSC::JSArray::createStructure):
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::createStructure):
        * runtime/JSByteArray.h:
        * runtime/JSFunction.h:
        (JSC::JSFunction::createStructure):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::finishCreation):
        (JSC::JSGlobalObject::createStructure):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::createStructure):
        * runtime/JSONObject.h:
        (JSC::JSONObject::createStructure):
        * runtime/JSObject.cpp:
        (JSC::JSObject::createInheritorID):
        * runtime/JSObject.h:
        (JSC::JSObject::createStructure):
        (JSC::JSNonFinalObject::createStructure):
        (JSC::JSFinalObject::createStructure):
        (JSC::createEmptyObjectStructure):
        * runtime/JSObjectWithGlobalObject.h:
        (JSC::JSObjectWithGlobalObject::createStructure):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::createStructure):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::createStructure):
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::createStructure):
        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::createStructure):
        * runtime/MathObject.h:
        (JSC::MathObject::createStructure):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::createStructure):
        (JSC::NativeErrorConstructor::constructorBody):
        * runtime/NumberConstructor.h:
        (JSC::NumberConstructor::createStructure):
        * runtime/NumberObject.h:
        (JSC::NumberObject::createStructure):
        * runtime/NumberPrototype.h:
        (JSC::NumberPrototype::createStructure):
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::createStructure):
        * runtime/ObjectPrototype.h:
        (JSC::ObjectPrototype::createStructure):
        * runtime/RegExp.h:
        (JSC::RegExp::createStructure):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::createStructure):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::createStructure):
        * runtime/RegExpPrototype.h:
        (JSC::RegExpPrototype::createStructure):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::createStructure):
        * runtime/StrictEvalActivation.h:
        (JSC::StrictEvalActivation::createStructure):
        * runtime/StringConstructor.h:
        (JSC::StringConstructor::createStructure):
        * runtime/StringObject.h:
        (JSC::StringObject::createStructure):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::create):
        (JSC::StringObjectThatMasqueradesAsUndefined::createStructure):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::createStructure):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::visitChildren):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::Structure::globalObject):
        (JSC::Structure::setGlobalObject):
        * runtime/StructureChain.h:
        (JSC::StructureChain::createStructure):

2011-09-06  Michael Saboff  <msaboff@apple.com>

        Add windows changes for JSC:RegExp functional tests
        https://bugs.webkit.org/show_bug.cgi?id=67521

        Windows build changes for regular expression functional test.

        Rubber-stamped by Gavin Barraclough.

        * JavaScriptCore.vcproj/JavaScriptCore.sln:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.vcproj/testRegExp: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExp.vcproj: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpCommon.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpDebug.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpDebugAll.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpDebugCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpPostBuild.cmd: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpPreBuild.cmd: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpPreLink.cmd: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpProduction.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpRelease.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpReleaseCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/testRegExp/testRegExpReleasePGO.vsprops: Added.

2011-09-06  Filip Pizlo  <fpizlo@apple.com>

        JavaScriptCore does not have tiered compilation
        https://bugs.webkit.org/show_bug.cgi?id=67176

        Reviewed by Gavin Barraclough.
        
        This adds the ability to have multiple CodeBlocks associated with
        a particular role in an Executable.  These are stored in
        descending order of compiler tier.  CodeBlocks are optimized when
        a counter (m_executeCounter) that is incremented in loops and
        epilogues becomes positive.  Optimizing means that all calls to
        the old CodeBlock are unlinked.
        
        The DFG can now pull in predictions from ValueProfiles, and
        propagate them along the graph.  To support the new phase while
        maintaing some level of abstraction, a DFGDriver was introduced
        that encapsulates how to run the DFG compiler.
        
        This is turned off by default because it's not yet a performance
        win on all benchmarks.  It speeds up crypto and richards by
        10% and 6% respectively, but still does not do as good of a job
        as it could.  Notably, the DFG backend has not changed, and
        is largely oblivious to the new information being made available
        to it.
        
        When turned off (the default), this patch is performance neutral.

        * CMakeLists.txt:
        * GNUmakefile.am:
        * GNUmakefile.list.am:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreCommon.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::branchAdd32):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::branchAdd32):
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::CodeBlock):
        (JSC::CodeBlock::~CodeBlock):
        (JSC::CodeBlock::visitAggregate):
        (JSC::CallLinkInfo::unlink):
        (JSC::CodeBlock::unlinkCalls):
        (JSC::CodeBlock::unlinkIncomingCalls):
        (JSC::CodeBlock::clearEvalCache):
        (JSC::replaceExistingEntries):
        (JSC::CodeBlock::copyDataFromAlternative):
        (JSC::ProgramCodeBlock::replacement):
        (JSC::EvalCodeBlock::replacement):
        (JSC::FunctionCodeBlock::replacement):
        (JSC::ProgramCodeBlock::compileOptimized):
        (JSC::EvalCodeBlock::compileOptimized):
        (JSC::FunctionCodeBlock::compileOptimized):
        * bytecode/CodeBlock.h:
        (JSC::GlobalCodeBlock::GlobalCodeBlock):
        (JSC::ProgramCodeBlock::ProgramCodeBlock):
        (JSC::EvalCodeBlock::EvalCodeBlock):
        (JSC::FunctionCodeBlock::FunctionCodeBlock):
        * bytecode/ValueProfile.h:
        (JSC::ValueProfile::dump):
        (JSC::ValueProfile::computeStatistics):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
        * bytecompiler/BytecodeGenerator.h:
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::addCall):
        (JSC::DFG::ByteCodeParser::dynamicallyPredict):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::parse):
        * dfg/DFGDriver.cpp: Added.
        (JSC::DFG::compile):
        (JSC::DFG::tryCompile):
        (JSC::DFG::tryCompileFunction):
        * dfg/DFGDriver.h: Added.
        (JSC::DFG::tryCompile):
        (JSC::DFG::tryCompileFunction):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::predictGlobalVar):
        (JSC::DFG::Graph::isConstant):
        (JSC::DFG::Graph::isJSConstant):
        (JSC::DFG::Graph::isInt32Constant):
        (JSC::DFG::Graph::isDoubleConstant):
        (JSC::DFG::Graph::valueOfJSConstant):
        (JSC::DFG::Graph::valueOfInt32Constant):
        (JSC::DFG::Graph::valueOfDoubleConstant):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::link):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::isConstant):
        (JSC::DFG::JITCompiler::isJSConstant):
        (JSC::DFG::JITCompiler::isInt32Constant):
        (JSC::DFG::JITCompiler::isDoubleConstant):
        (JSC::DFG::JITCompiler::valueOfJSConstant):
        (JSC::DFG::JITCompiler::valueOfInt32Constant):
        (JSC::DFG::JITCompiler::valueOfDoubleConstant):
        * dfg/DFGNode.h:
        (JSC::DFG::isCellPrediction):
        (JSC::DFG::isNumberPrediction):
        (JSC::DFG::predictionToString):
        (JSC::DFG::mergePrediction):
        (JSC::DFG::makePrediction):
        (JSC::DFG::Node::valueOfJSConstant):
        (JSC::DFG::Node::isInt32Constant):
        (JSC::DFG::Node::isDoubleConstant):
        (JSC::DFG::Node::valueOfInt32Constant):
        (JSC::DFG::Node::valueOfDoubleConstant):
        (JSC::DFG::Node::predict):
        * dfg/DFGPropagation.cpp: Added.
        (JSC::DFG::Propagator::Propagator):
        (JSC::DFG::Propagator::fixpoint):
        (JSC::DFG::Propagator::setPrediction):
        (JSC::DFG::Propagator::mergePrediction):
        (JSC::DFG::Propagator::propagateNode):
        (JSC::DFG::Propagator::propagateForward):
        (JSC::DFG::Propagator::propagateBackward):
        (JSC::DFG::propagate):
        * dfg/DFGPropagation.h: Added.
        (JSC::DFG::propagate):
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgLinkFor):
        * heap/HandleHeap.h:
        (JSC::HandleHeap::Node::Node):
        * jit/JIT.cpp:
        (JSC::JIT::emitOptimizationCheck):
        (JSC::JIT::emitTimeoutCheck):
        (JSC::JIT::privateCompile):
        (JSC::JIT::linkFor):
        * jit/JIT.h:
        (JSC::JIT::emitOptimizationCheck):
        * jit/JITCall32_64.cpp:
        (JSC::JIT::emit_op_ret):
        (JSC::JIT::emit_op_ret_object_or_this):
        * jit/JITCode.h:
        (JSC::JITCode::JITCode):
        (JSC::JITCode::bottomTierJIT):
        (JSC::JITCode::topTierJIT):
        (JSC::JITCode::nextTierJIT):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_ret):
        (JSC::JIT::emit_op_ret_object_or_this):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JITStubs.h:
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileOptimized):
        (JSC::EvalExecutable::compileInternal):
        (JSC::ProgramExecutable::compileOptimized):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileOptimizedForCall):
        (JSC::FunctionExecutable::compileOptimizedForConstruct):
        (JSC::FunctionExecutable::compileForCallInternal):
        (JSC::FunctionExecutable::compileForConstructInternal):
        * runtime/Executable.h:
        (JSC::EvalExecutable::compile):
        (JSC::ProgramExecutable::compile):
        (JSC::FunctionExecutable::compileForCall):
        (JSC::FunctionExecutable::compileForConstruct):
        (JSC::FunctionExecutable::compileOptimizedFor):
        * wtf/Platform.h:
        * wtf/SentinelLinkedList.h:
        (WTF::BasicRawSentinelNode::BasicRawSentinelNode):
        (WTF::BasicRawSentinelNode::setPrev):
        (WTF::BasicRawSentinelNode::setNext):
        (WTF::BasicRawSentinelNode::prev):
        (WTF::BasicRawSentinelNode::next):
        (WTF::BasicRawSentinelNode::isOnList):
        (WTF::::remove):
        (WTF::::SentinelLinkedList):
        (WTF::::begin):
        (WTF::::end):
        (WTF::::push):

2011-09-05  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r94445 and r94448.
        http://trac.webkit.org/changeset/94445
        http://trac.webkit.org/changeset/94448
        https://bugs.webkit.org/show_bug.cgi?id=67595

        It broke everything (Requested by ossy on #webkit).

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * heap/Heap.cpp:
        (JSC::Heap::collect):
        * heap/Heap.h:
        * heap/NewSpace.cpp:
        (JSC::NewSpace::NewSpace):
        * heap/NewSpace.h:
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSObject.cpp:
        (JSC::JSObject::allocatePropertyStorage):
        * runtime/JSObject.h:
        (JSC::JSObject::~JSObject):
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::putDirectWithoutTransition):
        (JSC::JSObject::putDirectFunctionWithoutTransition):
        (JSC::JSObject::transitionTo):
        (JSC::JSObject::visitChildrenDirect):

2011-09-05  Patrick Gansterer  <paroga@webkit.org>

        Unreviewed build fix for r94452.

        Add config.h as the first header to the cc files as required by the coding style.
        Reuse macros from Assertions.h instead of adding addional #ifdefs.

        * wtf/dtoa/bignum-dtoa.cc:
        * wtf/dtoa/bignum.cc:
        * wtf/dtoa/cached-powers.cc:
        * wtf/dtoa/diy-fp.cc:
        * wtf/dtoa/double-conversion.cc:
        * wtf/dtoa/fast-dtoa.cc:
        * wtf/dtoa/fixed-dtoa.cc:
        * wtf/dtoa/strtod.cc:
        * wtf/dtoa/utils.h:

2011-09-05  Andras Becsi  <andras.becsi@nokia.com>

        [Qt][WK2] Fix the build

        Rubber-stamped by Csaba Osztrogonác.

        * wtf/dtoa/double-conversion.cc: Remove dead variable in file added in r94452.
        The variable fractional_part is only set but never used.

2011-09-04  Mark Hahnenberg  <mhahnenberg@apple.com>

        REGRESSION (r94452): 20 http/tests tests failing on Qt Linux Release
        https://bugs.webkit.org/show_bug.cgi?id=67562

        Reviewed by Darin Adler.

        Fixing the build (again which was broken by the dtoa patch.  Needed 
        to make sure WTF::double_conversion::initialize() is called for Qt
        as well as adding a check for WinCE in dtoa/utils.h

        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * wtf/dtoa/cached-powers.cc:
        * wtf/dtoa/utils.h:

2011-09-03  Filip Pizlo  <fpizlo@apple.com>

        ThunkGenerators does not convert positive double zero into integer zero
        https://bugs.webkit.org/show_bug.cgi?id=67553

        Reviewed by Gavin Barraclough.
        
        This is an 0.5% speed-up on V8 and neutral elsewhere.

        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::returnDouble):

2011-09-03  Kevin Ollivier  <kevino@theolliviers.com>

        [wx] Unreviewed build fix. Add wtf/dtoa directory to build.

        * wscript:

2011-09-03  Filip Pizlo  <fpizlo@apple.com>

        DFG variable predictions only work for local variables, not temporaries
        https://bugs.webkit.org/show_bug.cgi?id=67554

        Reviewed by Gavin Barraclough.
        
        This appears to be a slight speed-up in Kraken (0.3% but significant)
        and neutral elsewhere.

        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::predict):

2011-09-02  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT speculation failure does recovery of additions in reverse and
        doesn't rebox
        https://bugs.webkit.org/show_bug.cgi?id=67551

        Reviewed by Sam Weinig.

        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):

2011-09-02  Filip Pizlo  <fpizlo@apple.com>

        ValueProfile does not make it safe to introspect cell values
        after garbage collection
        https://bugs.webkit.org/show_bug.cgi?id=67354

        Reviewed by Gavin Barraclough.
        
        ValueProfile buckets are now weak references, implemented using a
        light-weight weak reference mechanism that this patch also adds (the
        WeakReferenceHarvester).  If a cell stored in a ValueProfile bucket
        is not marked, then the bucket is transformed into a Structure
        pointer.  If the Structure is not marked either, then it is turned
        into a ClassInfo pointer.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::~CodeBlock):
        (JSC::CodeBlock::visitAggregate):
        (JSC::CodeBlock::visitWeakReferences):
        * bytecode/CodeBlock.h:
        * bytecode/ValueProfile.h:
        (JSC::ValueProfile::ValueProfile):
        (JSC::ValueProfile::classInfo):
        (JSC::ValueProfile::numberOfInt32s):
        (JSC::ValueProfile::numberOfDoubles):
        (JSC::ValueProfile::numberOfCells):
        (JSC::ValueProfile::numberOfArrays):
        (JSC::ValueProfile::probabilityOfArray):
        (JSC::ValueProfile::WeakBucket::WeakBucket):
        (JSC::ValueProfile::WeakBucket::operator!):
        (JSC::ValueProfile::WeakBucket::isEmpty):
        (JSC::ValueProfile::WeakBucket::isClassInfo):
        (JSC::ValueProfile::WeakBucket::isStructure):
        (JSC::ValueProfile::WeakBucket::asStructure):
        (JSC::ValueProfile::WeakBucket::asClassInfo):
        (JSC::ValueProfile::WeakBucket::getClassInfo):
        * heap/Heap.cpp:
        (JSC::Heap::harvestWeakReferences):
        (JSC::Heap::markRoots):
        * heap/Heap.h:
        * heap/MarkStack.cpp:
        (JSC::SlotVisitor::drain):
        (JSC::SlotVisitor::harvestWeakReferences):
        * heap/MarkStack.h:
        (JSC::MarkStack::addWeakReferenceHarvester):
        (JSC::MarkStack::MarkStack):
        (JSC::MarkStack::appendUnbarrieredPointer):
        * heap/SlotVisitor.h:
        * heap/WeakReferenceHarvester.h: Added.
        (JSC::WeakReferenceHarvester::WeakReferenceHarvester):
        (JSC::WeakReferenceHarvester::~WeakReferenceHarvester):

2011-09-02  Michael Saboff  <msaboff@apple.com>

        Replace local implementation of string equals() methods with UString versions
        https://bugs.webkit.org/show_bug.cgi?id=67342

        In preparation to allowing StringImpl to be backed by 8 bit 
        characters when appropriate, we need to eliminate or change the
        usage of StringImpl::characters(). Change the uses of characters()
        that are used to implement redundant equals() methods.

        Reviewed by Gavin Barraclough.

        * runtime/Identifier.cpp:
        (JSC::Identifier::equal):
        * runtime/Identifier.h:
        (JSC::Identifier::equal):
        * wtf/text/AtomicString.cpp:
        (WTF::CStringTranslator::equal): Moved an optimized method to here.
        (WTF::operator==):
        * wtf/text/StringImpl.cpp:
        (WTF::equal):
        * wtf/text/StringImpl.h:

2011-09-02  Michael Saboff  <msaboff@apple.com>

        Add JSC:RegExp functional tests
        https://bugs.webkit.org/show_bug.cgi?id=67339

        Added new test driver program (testRegExp) and corresponding data file
        along with build scripts changes.

        Reviewed by Gavin Barraclough.

        * JavaScriptCore.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * testRegExp.cpp: Added.
        (Options::Options):
        (StopWatch::start):
        (StopWatch::stop):
        (StopWatch::getElapsedMS):
        (RegExpTest::RegExpTest):
        (GlobalObject::create):
        (GlobalObject::className):
        (GlobalObject::GlobalObject):
        (main):
        (cleanupGlobalData):
        (testOneRegExp):
        (scanString):
        (parseRegExpLine):
        (parseTestLine):
        (runFromFiles):
        (printUsageStatement):
        (parseArguments):
        (realMain):
        * tests/regexp: Added.
        * tests/regexp/RegExpTest.data: Added.

2011-09-02  Michael Saboff  <msaboff@apple.com>

        Add JSC:RegExp functional test data generator
        https://bugs.webkit.org/show_bug.cgi?id=67519

        Add a data generator for regular expressions.  To enable, change the
        #undef REGEXP_FUNC_TEST_DATA_GEN to #define.  Then compile and use
        regular expressions.  The resulting data will be in /tmp/RegExpTestsData.

        Reviewed by Gavin Barraclough.

        * runtime/RegExp.cpp:
        (JSC::regExpFlags):
        (JSC::RegExpFunctionalTestCollector::clearRegExp):
        (JSC::RegExpFunctionalTestCollector::get):
        (JSC::RegExpFunctionalTestCollector::outputOneTest):
        (JSC::RegExpFunctionalTestCollector::RegExpFunctionalTestCollector):
        (JSC::RegExpFunctionalTestCollector::~RegExpFunctionalTestCollector):
        (JSC::RegExpFunctionalTestCollector::outputEscapedUString):
        (JSC::RegExp::~RegExp):
        (JSC::RegExp::compile):
        (JSC::RegExp::match):
        (JSC::RegExp::matchCompareWithInterpreter):

2011-09-02  Mark Hahnenberg  <mhahnenberg@apple.com>

        Fix the broken build due to dtoa patch
        https://bugs.webkit.org/show_bug.cgi?id=67534

        Reviewed by Oliver Hunt.

        Fixing the build.

        * GNUmakefile.list.am:
        * wtf/dtoa/bignum.cc:
        * wtf/dtoa/fast-dtoa.cc:
        * wtf/dtoa/utils.h:

2011-09-02  Oliver Hunt  <oliver@apple.com>

        Remove OldSpace classes
        https://bugs.webkit.org/show_bug.cgi?id=67533

        Reviewed by Gavin Barraclough.

        Remove the unused OldSpace classes

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Heap.cpp:
        (JSC::Heap::writeBarrierSlowCase):
        * heap/MarkedBlock.h:
        * heap/OldSpace.cpp: Removed.
        * heap/OldSpace.h: Removed.

2011-09-02  James Robinson  <jamesr@chromium.org>

        Compile fix for mac build.

        * wtf/CheckedArithmetic.h:
        (WTF::operator+):
        (WTF::operator-):
        (WTF::operator*):

2011-08-30  Matthew Delaney  <mdelaney@apple.com>

        Read out of bounds in sUnpremultiplyData_RGBA8888 / ImageBufferData::getData
        https://bugs.webkit.org/show_bug.cgi?id=65352

        Reviewed by Simon Fraser.

        New test: fast/canvas/canvas-getImageData-large-crash.html

        This patch prevents overflows from happening in getImageData, createImageData, and canvas creation
        calls that specify widths and heights that end up overflowing the ints that we store those values in
        as well as derived values such as area and maxX / maxY of the bounding rects involved. Overflow of integer
        arithmetic is detected via the use of the new Checked type that was introduced in r94207. The change to JSC
        is just to add a new helper method described below.

        * wtf/MathExtras.h:
        (isWithinIntRange): Reports if a float's value is within the range expressible by an int.

2011-09-02  Mark Hahnenberg  <mhahnenberg@apple.com>

        Incorporate newer, faster dtoa library
        https://bugs.webkit.org/show_bug.cgi?id=66346

        Reviewed by Oliver Hunt.

        Added new dtoa library at http://code.google.com/p/double-conversion/.
        Replaced old call to dtoa.  The new library is much faster than the old one.
        We still use the old dtoa for some stuff in WebCore as well as the old strtod, 
        but we can phase these out eventually as well.

        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/InitializeThreading.cpp:
        * runtime/NumberPrototype.cpp:
        (JSC::numberProtoFuncToExponential):
        (JSC::numberProtoFuncToFixed):
        (JSC::numberProtoFuncToPrecision):
        * runtime/UString.cpp:
        (JSC::UString::number):
        * wtf/CMakeLists.txt:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading):
        * wtf/ThreadingWin.cpp:
        (WTF::initializeThreading):
        * wtf/dtoa.cpp:
        (WTF::dtoa):
        * wtf/dtoa.h:
        * wtf/dtoa/COPYING: Added.
        * wtf/dtoa/LICENSE: Added.
        * wtf/dtoa/README: Added.
        * wtf/dtoa/bignum-dtoa.cc: Added.
        * wtf/dtoa/bignum-dtoa.h: Added.
        * wtf/dtoa/bignum.cc: Added.
        * wtf/dtoa/bignum.h: Added.
        (WTF::double_conversion::Bignum::Times10):
        (WTF::double_conversion::Bignum::Equal):
        (WTF::double_conversion::Bignum::LessEqual):
        (WTF::double_conversion::Bignum::Less):
        (WTF::double_conversion::Bignum::PlusEqual):
        (WTF::double_conversion::Bignum::PlusLessEqual):
        (WTF::double_conversion::Bignum::PlusLess):
        (WTF::double_conversion::Bignum::EnsureCapacity):
        (WTF::double_conversion::Bignum::BigitLength):
        * wtf/dtoa/cached-powers.cc: Added.
        * wtf/dtoa/cached-powers.h: Added.
        * wtf/dtoa/diy-fp.cc: Added.
        * wtf/dtoa/diy-fp.h: Added.
        (WTF::double_conversion::DiyFp::DiyFp):
        (WTF::double_conversion::DiyFp::Subtract):
        (WTF::double_conversion::DiyFp::Minus):
        (WTF::double_conversion::DiyFp::Times):
        (WTF::double_conversion::DiyFp::Normalize):
        (WTF::double_conversion::DiyFp::f):
        (WTF::double_conversion::DiyFp::e):
        (WTF::double_conversion::DiyFp::set_f):
        (WTF::double_conversion::DiyFp::set_e):
        * wtf/dtoa/double-conversion.cc: Added.
        * wtf/dtoa/double-conversion.h: Added.
        (WTF::double_conversion::DoubleToStringConverter::DoubleToStringConverter):
        (WTF::double_conversion::StringToDoubleConverter::StringToDoubleConverter):
        * wtf/dtoa/double.h: Added.
        (WTF::double_conversion::double_to_uint64):
        (WTF::double_conversion::uint64_to_double):
        (WTF::double_conversion::Double::Double):
        (WTF::double_conversion::Double::AsDiyFp):
        (WTF::double_conversion::Double::AsNormalizedDiyFp):
        (WTF::double_conversion::Double::AsUint64):
        (WTF::double_conversion::Double::NextDouble):
        (WTF::double_conversion::Double::Exponent):
        (WTF::double_conversion::Double::Significand):
        (WTF::double_conversion::Double::IsDenormal):
        (WTF::double_conversion::Double::IsSpecial):
        (WTF::double_conversion::Double::IsNan):
        (WTF::double_conversion::Double::IsInfinite):
        (WTF::double_conversion::Double::Sign):
        (WTF::double_conversion::Double::UpperBoundary):
        (WTF::double_conversion::Double::NormalizedBoundaries):
        (WTF::double_conversion::Double::value):
        (WTF::double_conversion::Double::SignificandSizeForOrderOfMagnitude):
        (WTF::double_conversion::Double::Infinity):
        (WTF::double_conversion::Double::NaN):
        (WTF::double_conversion::Double::DiyFpToUint64):
        * wtf/dtoa/fast-dtoa.cc: Added.
        * wtf/dtoa/fast-dtoa.h: Added.
        * wtf/dtoa/fixed-dtoa.cc: Added.
        * wtf/dtoa/fixed-dtoa.h: Added.
        * wtf/dtoa/strtod.cc: Added.
        * wtf/dtoa/strtod.h: Added.
        * wtf/dtoa/utils.h: Added.
        (WTF::double_conversion::Max):
        (WTF::double_conversion::Min):
        (WTF::double_conversion::StrLength):
        (WTF::double_conversion::Vector::Vector):
        (WTF::double_conversion::Vector::SubVector):
        (WTF::double_conversion::Vector::length):
        (WTF::double_conversion::Vector::is_empty):
        (WTF::double_conversion::Vector::start):
        (WTF::double_conversion::Vector::operator[]):
        (WTF::double_conversion::Vector::first):
        (WTF::double_conversion::Vector::last):
        (WTF::double_conversion::StringBuilder::StringBuilder):
        (WTF::double_conversion::StringBuilder::~StringBuilder):
        (WTF::double_conversion::StringBuilder::size):
        (WTF::double_conversion::StringBuilder::position):
        (WTF::double_conversion::StringBuilder::Reset):
        (WTF::double_conversion::StringBuilder::AddCharacter):
        (WTF::double_conversion::StringBuilder::AddString):
        (WTF::double_conversion::StringBuilder::AddSubstring):
        (WTF::double_conversion::StringBuilder::AddPadding):
        (WTF::double_conversion::StringBuilder::Finalize):
        (WTF::double_conversion::StringBuilder::is_finalized):
        (WTF::double_conversion::BitCast):
        * wtf/wtf.pri:

2011-09-02  Filip Pizlo  <fpizlo@apple.com>

        DFG graph has no way of distinguishing or reconciling between static
        and dynamic predictions
        https://bugs.webkit.org/show_bug.cgi?id=67343

        Reviewed by Gavin Barraclough.
        
        PredictedType now stores the source of the prediction.  Merging predictions,
        which was previously done with a bitwise or, is now done via the
        mergePredictions (equivalent to |) and mergePrediction (equivalent to |=)
        functions, which correctly handle combinations of static and dynamic.
        
        This is performance-neutral, since all predictions are currently static and
        so the code has no visible effects.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::set):
        (JSC::DFG::ByteCodeParser::staticallyPredictArray):
        (JSC::DFG::ByteCodeParser::staticallyPredictInt32):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::predictGlobalVar):
        * dfg/DFGNode.h:
        (JSC::DFG::isArrayPrediction):
        (JSC::DFG::isInt32Prediction):
        (JSC::DFG::isDoublePrediction):
        (JSC::DFG::isDynamicPrediction):
        (JSC::DFG::mergePredictions):
        (JSC::DFG::mergePrediction):
        (JSC::DFG::makePrediction):
        (JSC::DFG::Node::predict):

2011-09-02  Oliver Hunt  <oliver@apple.com>

        Fix 32bit build.

        * heap/NewSpace.h:
        (JSC::NewSpace::allocatePropertyStorage):
        (JSC::NewSpace::inPropertyStorageNursery):

2011-09-02  Oliver Hunt  <oliver@apple.com>

        Use bump allocator for initial property storage
        https://bugs.webkit.org/show_bug.cgi?id=67494

        Reviewed by Gavin Barraclough.

        Switch to a bump allocator for the initial out of line
        property storage.  This gives us slightly faster allocation
        for short lived objects that need out of line storage at
        the cost of an additional memcpy when the object survives
        a GC pass.

        No performance impact.

        * JavaScriptCore.exp:
        * heap/Heap.cpp:
        (JSC::Heap::collect):
        * heap/Heap.h:
        (JSC::Heap::allocatePropertyStorage):
        (JSC::Heap::inPropertyStorageNursary):
        * heap/NewSpace.cpp:
        (JSC::NewSpace::NewSpace):
        * heap/NewSpace.h:
        (JSC::NewSpace::resetPropertyStorageNursary):
        (JSC::NewSpace::allocatePropertyStorage):
        (JSC::NewSpace::inPropertyStorageNursary):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSObject.cpp:
        (JSC::JSObject::allocatePropertyStorage):
        * runtime/JSObject.h:
        (JSC::JSObject::~JSObject):
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::putDirectWithoutTransition):
        (JSC::JSObject::putDirectFunctionWithoutTransition):
        (JSC::JSObject::transitionTo):
        (JSC::JSObject::visitChildrenDirect):

2011-09-01  Mark Rowe  <mrowe@apple.com>

        Fix the build.

        * JavaScriptCore.JSVALUE32_64only.exp:
        * JavaScriptCore.JSVALUE64only.exp:
        * JavaScriptCore.exp:

2011-09-01  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (4/7)
        https://bugs.webkit.org/show_bug.cgi?id=67174

        Reviewed by Oliver Hunt.

        Completed the fourth level of the refactoring to add finishCreation() 
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        This primarily consists of pushing the calls to finishCreation() down 
        into the constructors of the subclasses of the second level of the hierarchy 
        as well as pulling the finishCreation() calls out into the class's corresponding
        create() method if it has one.  Doing both simultaneously allows us to 
        maintain the invariant that the finishCreation() method chain is called exactly 
        once during the creation of an object, since calling it any other number of 
        times (0, 2, or more) will cause an assertion failure.

        * API/JSCallbackConstructor.cpp:
        (JSC::JSCallbackConstructor::JSCallbackConstructor):
        (JSC::JSCallbackConstructor::finishCreation):
        * API/JSCallbackConstructor.h:
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::create):
        * API/JSCallbackObjectFunctions.h:
        (JSC::::JSCallbackObject):
        (JSC::::finishCreation):
        * JavaScriptCore.JSVALUE64only.exp:
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::DebuggerActivation):
        (JSC::DebuggerActivation::create):
        * debugger/DebuggerActivation.h:
        * runtime/Arguments.h:
        (JSC::Arguments::create):
        (JSC::Arguments::createNoParameters):
        (JSC::Arguments::Arguments):
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::ArrayPrototype):
        (JSC::ArrayPrototype::finishCreation):
        * runtime/ArrayPrototype.h:
        * runtime/BooleanObject.cpp:
        (JSC::BooleanObject::BooleanObject):
        (JSC::BooleanObject::finishCreation):
        * runtime/BooleanObject.h:
        * runtime/DateInstance.cpp:
        (JSC::DateInstance::DateInstance):
        (JSC::DateInstance::finishCreation):
        * runtime/DateInstance.h:
        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::ErrorInstance):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::create):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        (JSC::ErrorPrototype::finishCreation):
        * runtime/ErrorPrototype.h:
        * runtime/ExceptionHelpers.cpp:
        (JSC::InterruptedExecutionError::InterruptedExecutionError):
        (JSC::InterruptedExecutionError::create):
        (JSC::TerminatedExecutionError::TerminatedExecutionError):
        (JSC::TerminatedExecutionError::create):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::EvalExecutable):
        (JSC::ProgramExecutable::ProgramExecutable):
        (JSC::FunctionExecutable::FunctionExecutable):
        * runtime/Executable.h:
        (JSC::NativeExecutable::create):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::EvalExecutable::create):
        (JSC::ProgramExecutable::create):
        (JSC::FunctionExecutable::create):
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        (JSC::InternalFunction::finishCreation):
        * runtime/InternalFunction.h:
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation):
        (JSC::JSActivation::finishCreation):
        * runtime/JSActivation.h:
        * runtime/JSArray.cpp:
        (JSC::JSArray::JSArray):
        * runtime/JSArray.h:
        (JSC::JSArray::create):
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::JSByteArray):
        * runtime/JSByteArray.h:
        (JSC::JSByteArray::create):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::finishCreation):
        * runtime/JSFunction.h:
        (JSC::JSFunction::create):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObject):
        (JSC::JSGlobalObject::finishCreation):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::JSNotAnObject):
        (JSC::JSNotAnObject::create):
        * runtime/JSONObject.cpp:
        (JSC::JSONObject::JSONObject):
        (JSC::JSONObject::finishCreation):
        * runtime/JSONObject.h:
        * runtime/JSObjectWithGlobalObject.cpp:
        (JSC::JSObjectWithGlobalObject::JSObjectWithGlobalObject):
        * runtime/JSObjectWithGlobalObject.h:
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::create):
        (JSC::JSStaticScopeObject::finishCreation):
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::JSVariableObject):
        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::JSWrapperObject):
        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):
        (JSC::MathObject::finishCreation):
        * runtime/MathObject.h:
        * runtime/NumberObject.cpp:
        (JSC::NumberObject::NumberObject):
        (JSC::NumberObject::finishCreation):
        * runtime/NumberObject.h:
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::ObjectPrototype):
        * runtime/ObjectPrototype.h:
        (JSC::ObjectPrototype::create):
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpMatchesArray::RegExpMatchesArray):
        (JSC::RegExpMatchesArray::finishCreation):
        * runtime/RegExpMatchesArray.h:
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        (JSC::RegExpObject::finishCreation):
        * runtime/RegExpObject.h:
        * runtime/StrictEvalActivation.cpp:
        (JSC::StrictEvalActivation::StrictEvalActivation):
        * runtime/StrictEvalActivation.h:
        (JSC::StrictEvalActivation::create):
        * runtime/StringObject.cpp:
        (JSC::StringObject::StringObject):
        (JSC::StringObject::finishCreation):
        * runtime/StringObject.h:

2011-09-01  Daniel Bates  <dbates@rim.com>

        QNX GCC distribution doesn't support vasprintf()
        https://bugs.webkit.org/show_bug.cgi?id=67423

        Reviewed by Antonio Gomes.

        * wtf/Platform.h: Don't enable HAVE_VASPRINTF when building with GCC on QNX.

2011-09-01  Michael Saboff  <msaboff@apple.com>

        Remove simple usage of UString::characters() from JavaScriptCore
        https://bugs.webkit.org/show_bug.cgi?id=67340

        In preparation to allowing StringImpl to be backed by 8 bit 
        characters when appropriate, we need to eliminate or change the
        usage of StringImpl::characters().  Most of the changes below
        change s->characters()[0] to s[0].

        Reviewed by Geoffrey Garen.

        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::keyForCharacterSwitch):
        * bytecompiler/NodesCodegen.cpp:
        (JSC::processClauseList):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/Identifier.cpp:
        (JSC::Identifier::addSlowCase):
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::jsToNumber):
        (JSC::parseFloat):
        * runtime/JSString.cpp:
        (JSC::JSString::substringFromRope):
        * runtime/JSString.h:
        (JSC::jsSingleCharacterSubstring):
        (JSC::jsString):
        (JSC::jsSubstring):
        (JSC::jsOwnedString):
        * runtime/RegExp.cpp:
        (JSC::regExpFlags):
        * wtf/text/StringBuilder.h:
        (WTF::StringBuilder::operator[]):

2011-09-01  Ada Chan  <adachan@apple.com>

        Export fastMallocStatistics and Heap::objectTypeCounts for https://bugs.webkit.org/show_bug.cgi?id=67160.

        Reviewed by Darin Adler.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-09-01  Hao Zheng  <zhenghao@chromium.org>

        Define PTHREAD_KEYS_MAX to fix Android port build.
        https://bugs.webkit.org/show_bug.cgi?id=67362

        Reviewed by Adam Barth.

        PTHREAD_KEYS_MAX is not defined in bionic, so explicitly define it.

        * wtf/ThreadIdentifierDataPthreads.cpp:

2011-08-31  Oliver Hunt  <oliver@apple.com>

        Fix build.

        * wtf/CheckedArithmetic.h:
        (WTF::Checked::Checked):
        (WTF::Checked::operator=):

2011-08-31  Oliver Hunt  <oliver@apple.com>

        fast/regex/overflow.html asserts in debug builds
        https://bugs.webkit.org/show_bug.cgi?id=67326

        Reviewed by Gavin Barraclough.

        The deliberate overflows in these expressions don't interact nicely
        with Checked<32bit-type> so we just bump up to Checked<int64_t> for the
        intermediate calculations.

        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::generatePatternCharacterFixed):
        (JSC::Yarr::YarrGenerator::generateCharacterClassFixed):

2011-08-31  Jeff Miller  <jeffm@apple.com>

        REGRESSION(92210): AVFoundation media engine is disabled on OS X
        https://bugs.webkit.org/show_bug.cgi?id=67316

        Move the definition of WTF_USE_AVFOUNDATION on the Mac back to JavaScriptCore/wtf/Platform.h,
        since WebKit2 doesn't have access to WebCore/config.h on this platform. This reverts the
        changes that were made in r92210.

        Reviewed by Darin Adler.

        * wtf/Platform.h: Added definition of WTF_USE_AVFOUNDATION on the Mac.

2011-08-31  Peter Beverloo  <peter@chromium.org>

        Add Android's platform specification and the right atomic functions.
        https://bugs.webkit.org/show_bug.cgi?id=66687

        Reviewed by Adam Barth.

        * wtf/Atomics.h:
        (WTF::atomicIncrement):
        (WTF::atomicDecrement):
        * wtf/Platform.h:

2011-08-30  Oliver Hunt  <oliver@apple.com>

        Add support for checked arithmetic
        https://bugs.webkit.org/show_bug.cgi?id=67095

        Reviewed by Sam Weinig.

        Add a checked arithmetic class Checked<T> that provides overflow-safe
        arithmetic over all integral types.  Checked<T> supports addition, subtraction
        and multiplication, along with "bool" conversions and equality operators.

        Checked<> can be used in either CRASH() on overflow or delayed failure modes,
        although the default is to CRASH().

        To ensure the code is actually in use (rather than checking in dead code) I've
        made a couple of properties in YARR use Checked<int> and Checked<unsigned>
        instead of raw value arithmetic.  This has resulted in a moderate set of changes,
        to YARR - mostly adding .get() calls, but a couple of casts from unsigned long
        to unsigned for some uses of sizeof, as Checked<> currently does not support
        mixed signed-ness of types wider that 32 bits.

        Happily the increased type safety of Checked<> means that it's not possible to
        accidentally assign away precision, nor accidentally call integer overload of
        a function instead of the bool version.

        No measurable regression in performance, and SunSpider claims this patch to be
        a progression of 0.3%.

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CheckedArithmetic.h: Added.
        (WTF::CrashOnOverflow::overflowed):
        (WTF::CrashOnOverflow::clearOverflow):
        (WTF::CrashOnOverflow::hasOverflowed):
        (WTF::RecordOverflow::RecordOverflow):
        (WTF::RecordOverflow::overflowed):
        (WTF::RecordOverflow::clearOverflow):
        (WTF::RecordOverflow::hasOverflowed):
        (WTF::isInBounds):
        (WTF::safeAdd):
        (WTF::safeSub):
        (WTF::safeMultiply):
        (WTF::safeEquals):
        (WTF::workAroundClangBug):
        (WTF::Checked::Checked):
        (WTF::Checked::operator=):
        (WTF::Checked::operator++):
        (WTF::Checked::operator--):
        (WTF::Checked::operator!):
        (WTF::Checked::operator UnspecifiedBoolType*):
        (WTF::Checked::get):
        (WTF::Checked::operator+=):
        (WTF::Checked::operator-=):
        (WTF::Checked::operator*=):
        (WTF::Checked::operator==):
        (WTF::Checked::operator!=):
        (WTF::operator+):
        (WTF::operator-):
        (WTF::operator*):
        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::ByteCompiler::atomPatternCharacter):
        (JSC::Yarr::ByteCompiler::atomCharacterClass):
        (JSC::Yarr::ByteCompiler::atomBackReference):
        (JSC::Yarr::ByteCompiler::atomParentheticalAssertionEnd):
        (JSC::Yarr::ByteCompiler::atomParenthesesSubpatternEnd):
        (JSC::Yarr::ByteCompiler::atomParenthesesOnceEnd):
        (JSC::Yarr::ByteCompiler::atomParenthesesTerminalEnd):
        * yarr/YarrInterpreter.h:
        (JSC::Yarr::ByteTerm::ByteTerm):
        (JSC::Yarr::ByteTerm::CheckInput):
        (JSC::Yarr::ByteTerm::UncheckInput):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::generateAssertionEOL):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterFixed):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterGreedy):
        (JSC::Yarr::YarrGenerator::backtrackPatternCharacterNonGreedy):
        (JSC::Yarr::YarrGenerator::generateCharacterClassOnce):
        (JSC::Yarr::YarrGenerator::generateCharacterClassFixed):
        (JSC::Yarr::YarrGenerator::generateCharacterClassGreedy):
        (JSC::Yarr::YarrGenerator::backtrackCharacterClassNonGreedy):
        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPatternConstructor::setupAlternativeOffsets):
        * yarr/YarrPattern.h:

2011-08-31  Andrei Popescu  <andreip@google.com>

        Investigate current uses of OS(ANDROID)
        https://bugs.webkit.org/show_bug.cgi?id=66761

        Unreviewed, build fix for ARM platforms.

        * wtf/Platform.h:

2011-08-31  Andrei Popescu  <andreip@google.com>

        Investigate current uses of OS(ANDROID)
        https://bugs.webkit.org/show_bug.cgi?id=66761

        Reviewed by Darin Adler.

        Remove the last legacy Android code.

        No new tests needed as the code wasn't tested in the first place.

        * wtf/Atomics.h:
        * wtf/Platform.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::createThreadInternal):

2011-08-30  Aaron Colwell  <acolwell@chromium.org>

        Add MediaSource API to HTMLMediaElement
        https://bugs.webkit.org/show_bug.cgi?id=64731

        Reviewed by Eric Carlson.

        * Configurations/FeatureDefines.xcconfig:

2011-08-30  Oliver Hunt  <oliver@apple.com>

        TypedArrays don't ensure that denormalised values are normalised
        https://bugs.webkit.org/show_bug.cgi?id=67178

        Reviewed by Gavin Barraclough.

        Add a couple of assertions to jsNumber() to ensure that
        we block signaling NaNs

        * runtime/JSValue.h:
        (JSC::jsDoubleNumber):
        (JSC::jsNumber):

2011-08-30  Ademar de Souza Reis Jr.  <ademar.reis@openbossa.org>

        [Qt] Do not unconditionally use pkg-config in .pro files
        https://bugs.webkit.org/show_bug.cgi?id=67055

        Reviewed by Andreas Kling.

        Original patch from Rohan McGovern <rohan.mcgovern@nokia.com>

        Using the first pkg-config in PATH is prone to errors when cross
        compiling inside the Qt repository (using Qt's build-system).

        This patch protect calls for pkg-config with
        !contains(QT_CONFIG, no-pkg-config). no-pkg-config is added to
        QT_CONFIG by Qt's 'configure' when cross-compiling on systems
        without pkg-config.

        The respective change in Qt's configure has been submited already.

        No new tests as this is just a build change.

        * wtf/wtf.pri: protect pkg-config calls

2011-08-29  Daniel Bates  <dbates@webkit.org>

        Add HAVE(VASPRINTF) macro to test for vasprintf() support
        https://bugs.webkit.org/show_bug.cgi?id=67156

        Reviewed by Darin Adler.

        Encapsulate testing of vasprintf() support in a HAVE macro
        instead of hardcoding the list of supported/unsupported
        compilers at the call site.

        * wtf/Platform.h:

2011-08-29  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (3/7)
        https://bugs.webkit.org/show_bug.cgi?id=67064

        Reviewed by Darin Adler.

        Completed the third level of the refactoring to add finishCreation() 
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        This primarily consists of pushing the calls to finishCreation() down 
        into the constructors of the subclasses of the second level of the hierarchy 
        as well as pulling the finishCreation() calls out into the class's corresponding
        create() method if it has one.  Doing both simultaneously allows us to 
        maintain the invariant that the finishCreation() method chain is called exactly 
        once during the creation of an object, since calling it any other number of 
        times (0, 2, or more) will cause an assertion failure.

        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::DebuggerActivation):
        (JSC::DebuggerActivation::finishCreation):
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::create):
        * runtime/Arguments.h:
        (JSC::Arguments::create):
        (JSC::Arguments::createNoParameters):
        (JSC::Arguments::Arguments):
        (JSC::Arguments::finishCreation):
        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::ErrorInstance):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::finishCreation):
        * runtime/ExceptionHelpers.cpp:
        (JSC::InterruptedExecutionError::InterruptedExecutionError):
        (JSC::TerminatedExecutionError::TerminatedExecutionError):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::EvalExecutable):
        (JSC::ProgramExecutable::ProgramExecutable):
        (JSC::FunctionExecutable::FunctionExecutable):
        Moved the assignment of m_firstLine and m_lastLine into the 
        FunctionExecutable::finishCreation() method in Executable.h
        * runtime/Executable.h:
        (JSC::ScriptExecutable::ScriptExecutable):
        (JSC::EvalExecutable::create):
        (JSC::ProgramExecutable::create):
        (JSC::FunctionExecutable::create):
        (JSC::FunctionExecutable::finishCreation):
        * runtime/JSArray.cpp:
        (JSC::JSArray::JSArray):
        (JSC::JSArray::finishCreation):
        * runtime/JSArray.h:
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::JSByteArray):
        * runtime/JSByteArray.h:
        (JSC::JSByteArray::finishCreation):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::JSNotAnObject):
        * runtime/JSObject.h:
        (JSC::JSNonFinalObject::JSNonFinalObject):
        * runtime/JSObjectWithGlobalObject.cpp:
        (JSC::JSObjectWithGlobalObject::JSObjectWithGlobalObject):
        (JSC::JSObjectWithGlobalObject::finishCreation):
        * runtime/JSObjectWithGlobalObject.h:
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::JSVariableObject):
        (JSC::JSVariableObject::finishCreation):
        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::JSWrapperObject):
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::ObjectPrototype):
        (JSC::ObjectPrototype::finishCreation):
        * runtime/ObjectPrototype.h:
        * runtime/StrictEvalActivation.cpp:
        (JSC::StrictEvalActivation::StrictEvalActivation):

2011-08-29  Andreas Kling  <kling@webkit.org>

        Unreviewed build fix after r93990.

        * wtf/HashTable.h:

2011-08-29  Andreas Kling  <kling@webkit.org>

        Viewing a post on reddit.com wastes a lot of memory on event listeners.
        https://bugs.webkit.org/show_bug.cgi?id=67133

        Reviewed by Darin Adler.

        Add a minimum table size to the HashTraits, instead of having it hard coded.
        The default value remains at 64, but can now be specialized.

        * runtime/StructureTransitionTable.h:
        * wtf/HashTable.h:
        (WTF::HashTable::shouldShrink):
        (WTF::::expand):
        (WTF::::checkTableConsistencyExceptSize):
        * wtf/HashTraits.h:

2011-08-28  Jonathan Liu  <net147@gmail.com>

        Fix build error when compiling with MinGW-w64 by disabling JIT
        on Windows 64-bit
        https://bugs.webkit.org/show_bug.cgi?id=61235

        Reviewed by Gavin Barraclough.

        The fixed mmap executable allocator for JIT on x86_64 requires
        sys/mman.h which is not available on Windows.

        * wtf/Platform.h:

2011-08-27  Filip Pizlo  <fpizlo@apple.com>

        JSC::Executable is inconsistent about using weak handle finalizers
        and destructors for releasing memory
        https://bugs.webkit.org/show_bug.cgi?id=67072

        Reviewed by Darin Adler.
        
        Moved more of the destruction of Executable state into the finalizer,
        which also resulted in an opportunity to mostly combine this with
        discardCode().  This also means that the finalizer is now enabled even
        when the JIT is turned off.  This is performance neutral on SunSpider,
        V8, and Kraken.

        * runtime/Executable.cpp:
        (JSC::ExecutableBase::clearCode):
        (JSC::ExecutableFinalizer::finalize):
        (JSC::EvalExecutable::clearCode):
        (JSC::ProgramExecutable::clearCode):
        (JSC::FunctionExecutable::discardCode):
        (JSC::FunctionExecutable::clearCode):
        * runtime/Executable.h:
        (JSC::ExecutableBase::finishCreation):

2011-08-26  Gavin Barraclough  <barraclough@apple.com>

        DFG JIT - ArithMod may clobber operands.
        https://bugs.webkit.org/show_bug.cgi?id=67085

        Reviewed by Sam Weinig.

        unboxDouble must be called on a temporary.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillDouble):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::boxDouble):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):

2011-08-26  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (2/7)
        https://bugs.webkit.org/show_bug.cgi?id=66957

        Reviewed by Darin Adler.

        Completed the second level of the refactoring to add finishCreation()
        methods to all classes within the JSCell hierarchy with non-trivial 
        constructor bodies.

        * runtime/Executable.h:
        (JSC::ExecutableBase::ExecutableBase):
        (JSC::ExecutableBase::create):
        (JSC::NativeExecutable::create):
        (JSC::NativeExecutable::finishCreation):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::ScriptExecutable::ScriptExecutable):
        (JSC::ScriptExecutable::finishCreation):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::GetterSetter):
        (JSC::GetterSetter::create):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::create):
        (JSC::JSAPIValueWrapper::JSAPIValueWrapper):
        * runtime/JSObject.h:
        (JSC::JSNonFinalObject::JSNonFinalObject):
        (JSC::JSNonFinalObject::finishCreation):
        (JSC::JSFinalObject::create):
        (JSC::JSFinalObject::finishCreation):
        (JSC::JSFinalObject::JSFinalObject):
        (JSC::JSObject::JSObject):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::JSPropertyNameIterator):
        (JSC::JSPropertyNameIterator::create):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::create):
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        (JSC::RegExp::createWithoutCaching):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        (JSC::ScopeChainNode::create):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::Structure::finishCreation):
        (JSC::Structure::createStructure):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::StructureChain):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):

2011-08-26  Filip Pizlo  <fpizlo@apple.com>

        The GC does not have a facility for profiling the kinds of objects
        that occupy the heap
        https://bugs.webkit.org/show_bug.cgi?id=66849

        Reviewed by Geoffrey Garen.
        
        Destructor calls and object scans are now optionally counted, per
        vtable. When the heap is destroyed and profiling is enabled, the
        counts are dumped, with care taken to print the names of classes
        (modulo C++ mangling) sorted in descending commonality.

        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Heap.cpp:
        (JSC::Heap::destroy):
        * heap/Heap.h:
        * heap/MarkStack.cpp:
        (JSC::SlotVisitor::visitChildren):
        (JSC::SlotVisitor::drain):
        * heap/MarkStack.h:
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::callDestructor):
        * heap/MarkedBlock.h:
        * heap/VTableSpectrum.cpp: Added.
        (JSC::VTableSpectrum::VTableSpectrum):
        (JSC::VTableSpectrum::~VTableSpectrum):
        (JSC::VTableSpectrum::countVPtr):
        (JSC::VTableSpectrum::count):
        (JSC::VTableAndCount::VTableAndCount):
        (JSC::VTableAndCount::operator<):
        (JSC::VTableSpectrum::dump):
        * heap/VTableSpectrum.h: Added.
        * wtf/Platform.h:

2011-08-26  Juan C. Montemayor  <jmont@apple.com>

        Update topCallFrame when calling host functions in the JIT
        https://bugs.webkit.org/show_bug.cgi?id=67010

        Reviewed by Oliver Hunt.
        
        The topCallFrame is not being updated when a host function is
        called by the JIT. This causes problems when trying to create a
        stack trace (https://bugs.webkit.org/show_bug.cgi?id=66994).

        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):

2011-08-26  Alexey Proskuryakov  <ap@apple.com>

        Get rid of frame life support timer
        https://bugs.webkit.org/show_bug.cgi?id=66874

        Reviewed by Geoff Garen.

        * runtime/JSGlobalObject.h:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        globalExec() no longer needs to be virtual, its only override was in JSDOMWindowBase.

2011-08-26  Chao-ying Fu  <fu@mips.com>

        Fix MIPS patchOffsetGetByIdSlowCaseCall
        https://bugs.webkit.org/show_bug.cgi?id=67046

        Reviewed by Gavin Barraclough.

        * jit/JIT.h:

2011-08-25  Mark Hahnenberg  <mhahnenberg@apple.com>

        Fixing broken build due to unused variables in release mode
        https://bugs.webkit.org/show_bug.cgi?id=67004

        Unreviewed, release build fix.

        Fixing broken build due to unused variables in ASSERTs in release build.

        * runtime/JSObject.h:
        (JSC::JSObject::finishCreation):
        * runtime/JSString.h:
        (JSC::RopeBuilder::finishCreation):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::finishCreation):

2011-08-25  Mark Hahnenberg  <mhahnenberg@apple.com>

        Unzip initialization lists and constructors in JSCell hierarchy (1/7)
        https://bugs.webkit.org/show_bug.cgi?id=66827

        Reviewed by Geoffrey Garen.

        Added finishCreation() methods to all immediately subclasses of JSCell with
        non-empty constructors.  Part of a larger refactoring to "unzip" initialization
        lists and constructor bodies.  Also renamed JSCell's constructorBody() method
        to finishCreation().

        * runtime/Executable.h:
        (JSC::ExecutableBase::ExecutableBase):
        (JSC::ExecutableBase::constructorBody):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::GetterSetter):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::constructorBody):
        (JSC::JSAPIValueWrapper::JSAPIValueWrapper):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::JSCell):
        (JSC::JSCell::JSCell::constructorBody):
        * runtime/JSObject.h:
        (JSC::JSObject::constructorBody):
        (JSC::JSObject::JSObject):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::constructorBody):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        (JSC::RopeBuilder::constructorBody):
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        (JSC::RegExp::constructorBody):
        * runtime/RegExp.h:
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        (JSC::ScopeChainNode::constructorBody):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::StructureChain):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):
        (JSC::StructureChain::constructorBody):

2011-08-25  Gabor Loki  <loki@webkit.org>

        REGRESSION(r93755): It made 14 jsc test and ~500 layout test fail on Qt-ARM bot
        https://bugs.webkit.org/show_bug.cgi?id=66956

        Rebaseline constants for patching GetByIdSlowCaseCall on ARM.

        Reviewed by Oliver Hunt.

        * jit/JIT.h:

2011-08-24  Juan C. Montemayor  <jmont@apple.com>

        Keep track of topCallFrame for Stack traces
        https://bugs.webkit.org/show_bug.cgi?id=66571

        Reviewed by Geoffrey Garen.

        This patch adds a TopCallFrame to JSC in order to have that information
        when an error is thrown to create a stack trace. The TopCallFrame is
        updated throughout select points in the Interpreter and the JSC.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::unwindCallFrame):
        (JSC::Interpreter::throwException):
        (JSC::Interpreter::execute):
        (JSC::Interpreter::executeCall):
        (JSC::Interpreter::executeConstruct):
        (JSC::Interpreter::privateExecute):
        * interpreter/Interpreter.h:
        (JSC::TopCallFrameSetter::TopCallFrameSetter):
        (JSC::TopCallFrameSetter::~TopCallFrameSetter):
        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::updateTopCallFrame):
        * jit/JITStubCall.h:
        (JSC::JITStubCall::call):
        * jit/JITStubs.cpp:
        (JSC::throwExceptionFromOpCall):
        (JSC::DEFINE_STUB_FUNCTION):
        (JSC::arityCheckFor):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:

2011-08-24  Filip Pizlo  <fpizlo@apple.com>

        ErrorInstance::create sometimes has two heap object constructions
        in flight at once
        https://bugs.webkit.org/show_bug.cgi?id=66845

        Reviewed by Darin Adler.
        
        The fix is simple since there is already a second create() method
        that takes a UString.

        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::create):

2011-08-24  Filip Pizlo  <fpizlo@apple.com>

        There is no facility for profiling how the write barrier is used
        https://bugs.webkit.org/show_bug.cgi?id=66747

        Reviewed by Geoffrey Garen.
        
        Added facilities for the JIT to specify the kind of write barrier
        being executed.  Added code for profiling the number of each kind
        of barrier encountered.

        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::writeBarrier):
        (JSC::DFG::JITCodeGenerator::cachedPutById):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::emitCount):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::emitCount):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::tryCachePutByID):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * heap/Heap.h:
        (JSC::Heap::writeBarrier):
        * heap/WriteBarrierSupport.cpp: Added.
        (JSC::WriteBarrierCounters::initialize):
        * heap/WriteBarrierSupport.h: Added.
        (JSC::WriteBarrierCounters::WriteBarrierCounters):
        (JSC::WriteBarrierCounters::jitCounterFor):
        (JSC::WriteBarrierCounters::countWriteBarrier):
        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_put_global_var):
        (JSC::JIT::emitWriteBarrier):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_put_by_val):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_put_global_var):
        (JSC::JIT::emitWriteBarrier):
        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * runtime/WriteBarrier.h:
        (JSC::WriteBarrierBase::setWithoutWriteBarrier):

2011-08-23  Mark Hahnenberg  <mhahnenberg@apple.com>

        Add checks to ensure allocation does not take place during initialization of GC-managed objects
        https://bugs.webkit.org/show_bug.cgi?id=65288

        Reviewed by Darin Adler.

        Adding the new validation functionality.  In its current state, it will performs checks, 
        but they don't fail unless you do allocation in the arguments to the parent constructor in the 
        initialization list of a class.  The allocateCell() method turns on the global flag disallowing any new 
        allocations, and the constructorBody() method in JSCell turns it off.  This way, allocation is still 
        allowed in constructor bodies while other refactoring efforts continue.

        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::constructorBody):
        (JSC::JSCell::JSCell::JSCell):
        (JSC::JSCell::allocateCell):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::isInitializingObject):
        (JSC::JSGlobalData::setInitializingObject):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::create):

2011-08-23  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=55347
        "name" and "message" enumerable on *Error.prototype

        Reviewed by Sam Weinig.

        The default value of a NativeErrorPrototype's message
        property is "", not the name of the error.

        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::create):
        (JSC::NativeErrorConstructor::constructorBody):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        (JSC::NativeErrorPrototype::constructorBody):
        * runtime/NativeErrorPrototype.h:
        (JSC::NativeErrorPrototype::create):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::create):

2011-08-23  Steve Block  <steveblock@google.com>

        Remove last occurrences of PLATFORM(ANDROID)
        https://bugs.webkit.org/show_bug.cgi?id=66763

        Reviewed by Tony Gentilcore.

        * wtf/Platform.h:

2011-08-23  Steve Block  <steveblock@google.com>

        Remove all mention of removed Android files from build scripts
        https://bugs.webkit.org/show_bug.cgi?id=66755

        Reviewed by Tony Gentilcore.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:
        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-08-23  Adam Barth  <abarth@webkit.org>

        Remove WebCore/editing/android and other Android-specific directories
        https://bugs.webkit.org/show_bug.cgi?id=66739

        Reviewed by Steve Block.

        Now that Android shares more code with Chromium, we don't need these
        Android-specific files.

        * wtf/android: Removed.
        * wtf/android/AndroidThreading.h: Removed.
        * wtf/android/MainThreadAndroid.cpp: Removed.

2011-08-23  Ilya Tikhonovsky  <loislo@chromium.org>

        Unreviewed build fix for compile error on Windows for r93560.

        * runtime/SamplingCounter.h:

2011-08-22  Filip Pizlo  <fpizlo@apple.com>

        Sampling counter support is in the bytecode directory
        https://bugs.webkit.org/show_bug.cgi?id=66724

        Reviewed by Darin Adler.
        
        Moved SamplingCounter to a separate header in runtime/.

        * GNUmakefile.list.am:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/SamplingTool.cpp:
        * bytecode/SamplingTool.h:
        * runtime/SamplingCounter.cpp: Added.
        (JSC::AbstractSamplingCounter::dump):
        * runtime/SamplingCounter.h: Added.
        (JSC::AbstractSamplingCounter::count):
        (JSC::AbstractSamplingCounter::addressOfCounter):
        (JSC::AbstractSamplingCounter::init):
        (JSC::SamplingCounter::SamplingCounter):
        (JSC::GlobalSamplingCounter::name):
        (JSC::DeletableSamplingCounter::DeletableSamplingCounter):
        (JSC::DeletableSamplingCounter::~DeletableSamplingCounter):

2011-08-21  Martin Robinson  <mrobinson@igalia.com>

        Fix 'make dist' for WebKitGTK+.

        * GNUmakefile.list.am: Add a missing header to the sources list.

2011-08-20  Filip Pizlo  <fpizlo@apple.com>

        JavaScriptCore bytecompiler does not compute scope depth correctly
        in the case of constant declarations
        https://bugs.webkit.org/show_bug.cgi?id=66572

        Reviewed by Oliver Hunt.
        
        Changed the handling of const to add the dynamic scope depth.

        * bytecompiler/NodesCodegen.cpp:
        (JSC::ConstDeclNode::emitCodeSingle):

2011-08-19  Daniel Bates  <dbates@webkit.org>

        Only #include <signal.h> and require SA_RESTART when building with JSC_MULTIPLE_THREADS
        https://bugs.webkit.org/show_bug.cgi?id=66617

        Both <signal.h> and SA_RESTART usage are guarded behind ENABLE(JSC_MULTIPLE_THREADS).
        But we cause a compile error if the platform doesn't support SA_RESTART regardless of
        whether JSC_MULTIPLE_THREADS is enabled for the port. Instead, we shouldn't require
        SA_RESTART support unless we are building with JSC_MULTIPLE_THREADS enabled.

        Reviewed by Antonio Gomes.

        * heap/MachineStackMarker.cpp:

2011-08-19  Filip Pizlo  <fpizlo@apple.com>

        The JSC JIT currently has no facility to profile and report
        the types of values
        https://bugs.webkit.org/show_bug.cgi?id=65901

        Reviewed by Gavin Barraclough.
        
        Added the ability to profile the values seen at function calls (both
        arguments and results) and heap loads.  This is done with emphasis
        on performance.  A value profiling site consists of: add, and,
        move, and store; no branching is necessary.  Each value profiling
        site (called a ValueProfile) has a ring buffer of 8 recently-seen
        values.  ValueProfiles are stored in the CodeBlock; there will be
        one for each argument (excluding this) and each heap load or callsite.
        Each time a value profiling site executes, it stores the value into
        a pseudo-random element in the ValueProfile buffer.  The point is
        that for frequently executed code, we will have 8 somewhat recent
        values in the buffer and will be able to not only figure out what
        type it is, but also to be able to reason about the actual values
        if we wish to do so.
        
        This feature is currently disabled by default.  When enabled, it
        results in a 3.7% slow-down on SunSpider.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::~CodeBlock):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addValueProfile):
        (JSC::CodeBlock::numberOfValueProfiles):
        (JSC::CodeBlock::valueProfile):
        (JSC::CodeBlock::valueProfileForBytecodeOffset):
        * bytecode/ValueProfile.h: Added.
        (JSC::ValueProfile::ValueProfile):
        (JSC::ValueProfile::numberOfSamples):
        (JSC::ValueProfile::computeProbability):
        (JSC::ValueProfile::numberOfInt32s):
        (JSC::ValueProfile::numberOfDoubles):
        (JSC::ValueProfile::numberOfCells):
        (JSC::ValueProfile::probabilityOfInt32):
        (JSC::ValueProfile::probabilityOfDouble):
        (JSC::ValueProfile::probabilityOfCell):
        (JSC::getValueProfileBytecodeOffset):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileSlowCases):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        (JSC::JIT::emitValueProfilingSite):
        * jit/JITCall.cpp:
        (JSC::JIT::emit_op_call_put_result):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitValueProfilingSite):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_get_by_val):
        (JSC::JIT::emitSlow_op_get_by_val):
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::emit_op_get_by_id):
        (JSC::JIT::emitSlow_op_get_by_id):
        * jit/JSInterfaceJIT.h:
        * wtf/Platform.h:
        * wtf/StdLibExtras.h:
        (WTF::binarySearch):
        (WTF::genericBinarySearch):

2011-08-19  Daniel Bates  <dbates@webkit.org>

        Don't include DisallowCType.h when building on QNX
        https://bugs.webkit.org/show_bug.cgi?id=66616

        Reviewed by Antonio Gomes.

        * config.h:

2011-08-19  Daniel Bates  <dbates@webkit.org>

        Implement ExecutableAllocator::cacheFlush() for QNX
        https://bugs.webkit.org/show_bug.cgi?id=66611

        Reviewed by Antonio Gomes.

        * jit/ExecutableAllocator.h:
        (JSC::ExecutableAllocator::cacheFlush):

2011-08-19  Daniel Bates  <dbates@webkit.org>

        Implement WTF::atomic{Increment, Decrement}() for QNX
        https://bugs.webkit.org/show_bug.cgi?id=66605

        Reviewed by Darin Adler.

        * wtf/Atomics.h:
        (WTF::atomicIncrement):
        (WTF::atomicDecrement):

2011-08-19  Beth Dakin  <bdakin@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=66590
        Re-name scrollbar painter types

        Reviewed by Sam Weinig.

        WTF_USE_WK_SCROLLBAR_PAINTER is now WTF_USE_SCROLLBAR_PAINTER since WK no longer 
        applies.
        * wtf/Platform.h:

2011-08-18  Mark Hahnenberg  <mhahnenberg@apple.com>

        Move allocation in constructors into separate constructorBody() methods
        https://bugs.webkit.org/show_bug.cgi?id=66265

        Reviewed by Oliver Hunt.

        Refactoring to put all allocations that need to be done after the object's 
        initialization list has executed but before the object is ready for use 
        into a separate constructorBody() method.  This method is still called by the constructor, 
        so the patch doesn't resolve any potential issues, it's just to set up the code for further refactoring.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * jsc.cpp:
        (GlobalObject::constructorBody):
        (GlobalObject::GlobalObject):
        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::ErrorInstance):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::constructorBody):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        (JSC::ErrorPrototype::constructorBody):
        * runtime/ErrorPrototype.h:
        * runtime/Executable.cpp:
        (JSC::FunctionExecutable::FunctionExecutable):
        * runtime/Executable.h:
        (JSC::FunctionExecutable::constructorBody):
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        * runtime/InternalFunction.h:
        (JSC::InternalFunction::constructorBody):
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::JSByteArray):
        * runtime/JSByteArray.h:
        (JSC::JSByteArray::constructorBody):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::constructorBody):
        * runtime/JSFunction.h:
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObject):
        (JSC::JSGlobalObject::constructorBody):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::JSPropertyNameIterator):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::constructorBody):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        (JSC::RopeBuilder::constructorBody):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::constructorBody):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        (JSC::NativeErrorPrototype::constructorBody):
        * runtime/NativeErrorPrototype.h:
        * runtime/StringObject.cpp:
        * runtime/StringObject.h:
        (JSC::StringObject::create):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::create):
        (JSC::StringObjectThatMasqueradesAsUndefined::StringObjectThatMasqueradesAsUndefined):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::create):

2011-08-10  Filip Pizlo  <fpizlo@apple.com>

        DFG non-speculative JIT does not inline the double case of ValueAdd
        https://bugs.webkit.org/show_bug.cgi?id=66025

        Reviewed by Gavin Barraclough.
        
        This is a 1.3% win on Kraken overall, with >=8% speed-ups on a few
        benchmarks (imaging-darkroom, stanford-crypto-pbkdf2,
        stanford-crypto-sha256-iterative).  It looks like it might have
        a speed-up in SunSpider (though not statistically significant or
        particularly reproducible) and a slight slow-down in V8 (0.14%,
        not statistically significant).  It does slow down v8-crypto by
        1.5%.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isKnownInteger):
        (JSC::DFG::JITCodeGenerator::isKnownNumeric):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        * dfg/DFGOperations.cpp:

2011-08-18  Filip Pizlo  <fpizlo@apple.com>

        [jsfunfuzz] DFG speculative JIT does divide-by-zero checks incorrectly
        https://bugs.webkit.org/show_bug.cgi?id=66426

        Reviewed by Oliver Hunt.
        
        Changed the branchTestPtr to branchTest32.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-08-17  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        https://bugs.webkit.org/show_bug.cgi?id=66379
        implements load32WithCompactAddressOffsetPatch function 
        and fixes store32 and moveWithPatch functions for SH4 platforms.

        Reviewed by Gavin Barraclough.

        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::rshift32):
        (JSC::MacroAssemblerSH4::store32):
        (JSC::MacroAssemblerSH4::load32WithCompactAddressOffsetPatch):
        (JSC::MacroAssemblerSH4::moveWithPatch):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::movlMemRegCompact):
        (JSC::SH4Assembler::readPointer):
        (JSC::SH4Assembler::repatchCompact):
        * jit/JIT.h:

2011-08-17  Filip Pizlo  <fpizlo@apple.com>

        JSC verbose debugging output sometimes doesn't work as expected.
        https://bugs.webkit.org/show_bug.cgi?id=66107

        Reviewed by Gavin Barraclough.
        
        Hardened the CodeBlock::dump() code so that it no longer crashes.  Improved
        the DFG verbose code so that it prints slightly more useful information.

        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::debugSize):
        * bytecode/CodeBlock.cpp:
        (JSC::valueToSourceString):
        (JSC::CodeBlock::dump):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::numberOfRegExps):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::link):

2011-08-16  Michael Saboff  <msaboff@apple.com>

        Crash in Structure::visitChildren running iAd.js regression test suite under memory pressure
        https://bugs.webkit.org/show_bug.cgi?id=66351

        JIT::privateCompilePutByIdTransition expects that regT0 and regT1
        have the basePayload and baseTag respectively.  In some cases,
        we may get to this generated code with one or both of these
        registers trash.  One know case is that regT0 on ARM may be
        trashed as regT0 (r0) is also arg0 and can be overrun with sp due
        to calls to JIT::restoreReturnAddress().  This patch uses the
        values on the stack.  A longer term solution is to work out all
        cases so that the register entry assumptions can assured.

        While fixing this, also determined that the additional stack offset
        of sizeof(void*) is not needed for ARM.

        Reviewed by Gavin Barraclough.

        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompilePutByIdTransition):

2011-08-15  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=66263
        DFG JIT does not always zero extend boolean result of DFG operations

        Reviewed by Sam Weinig.

        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
            - Change bool return values to a 64-bit type.

2011-08-15  Gavin Barraclough  <barraclough@apple.com>

        Crash accessing static property on sealed object
        https://bugs.webkit.org/show_bug.cgi?id=66242

        Reviewed by Sam Weinig.

        * runtime/JSObject.h:
        (JSC::JSObject::putDirectInternal):
            - should only check isExtensible if checkReadOnly.

2011-08-15  Sam Weinig  <sam@webkit.org>

        Fix release build when building with Clang.

        Reviewed by Anders Carlsson.

        * runtime/Identifier.cpp:
        (JSC::Identifier::checkCurrentIdentifierTable):
        Add NO_RETURN_DUE_TO_CRASH.

2011-08-15  Oliver Varga  <Varga.Oliver@stud.u-szeged.hu>

        Reviewed by Nikolas Zimmermann.

        Speed up SVGSMILElement::findInstanceTime.
        https://bugs.webkit.org/show_bug.cgi?id=61025

        Add a new parameter to StdlibExtras.h::binarySerarch function
        to also handle cases when the array does not contain the key value.
        This is needed for an svg function.

        * wtf/StdLibExtras.h:
        (WTF::binarySearch):

2011-08-13  Sam Weinig  <sam@webkit.org>

        Add back 0xbbadbeef to CRASH to allow for old habits
        https://bugs.webkit.org/show_bug.cgi?id=66190

        Reviewed by David Kilzer.

        * wtf/Assertions.h:
        Add back the assignment to the memory address 0xbbadbeef in the CRASH
        macro, as it does not cause issue in the clang static analyzer and many
        people use its presence in crash reports to easily identify ASSERTs. 

2011-08-13  Sam Weinig  <sam@webkit.org>

        Fix a bunch of minor bugs caught by the clang static analyzer in JavaScriptCore
        https://bugs.webkit.org/show_bug.cgi?id=66182

        Reviewed by Dan Bernstein.

        Fixes 10 warnings in JavaScriptCore and 2 in testapi.

        * API/tests/testapi.c:
        (main):
        Remove dead variables.

        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        Initialize hasPrinted and silence an unused warning by casting to void (Ok here
        since it is debug code and I want to keep it clear that if other cases are added,
        the hasPrinted flag would be needed).

        * wtf/dtoa.cpp:
        (WTF::d2b):
        The variable "de" in the else block is always zero, so there is no reason to
        use it.

2011-08-12  Sam Weinig  <sam@webkit.org>

        Use __builtin_trap() for CRASH when building with clang
        https://bugs.webkit.org/show_bug.cgi?id=66152

        Reviewed by Anders Carlsson.

        * wtf/Assertions.h:
        Add Clang specific CRASH macro that calls __builtin_trap() instead
        of silly techniques to crash. This allows the static analyzer to understand
        that we are intentionally crashing. As a result, we need to mark some functions
        as not returning.

        Also adds a macros that annotates a function as never returning due to ASSERT or CRASH.

        * wtf/Compiler.h:
        Add COMPILIER(CLANG) and fix some formatting and spelling mistakes.

        * wtf/FastMalloc.cpp:
        (WTF::Internal::fastMallocMatchFailed):
        Add NO_RETURN_DUE_TO_CRASH.

        * yarr/YarrParser.h:
        (JSC::Yarr::Parser::CharacterClassParserDelegate::assertionWordBoundary):
        (JSC::Yarr::Parser::CharacterClassParserDelegate::atomBackReference):
        Add NO_RETURN_DUE_TO_ASSERT.

2011-08-12  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT has inconsistent use of boxDouble and unboxDouble,
        inconsistent use of assertions regarding doubles, and those
        assertions are not turned on in debug builds
        https://bugs.webkit.org/show_bug.cgi?id=66160

        Reviewed by Gavin Barraclough.
        
        JIT assertions are now turned on in debug builds.  JIT
        assertions are now used for boxing and unboxing doubles, and boxing
        and unboxing no longer involves code duplication.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillDouble):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::boxDouble):
        (JSC::DFG::JITCodeGenerator::unboxDouble):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::GeneralizedRegister::moveTo):
        (JSC::DFG::GeneralizedRegister::swapWith):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::boxDouble):
        (JSC::DFG::JITCompiler::unboxDouble):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):
        (JSC::DFG::SpeculativeJIT::convertToDouble):

2011-08-12  Mark Rowe  <mrowe@apple.com>

        Be more forward-looking in the choice of compiler.

        Rubber-stamped by Jon Honeycutt.

        * Configurations/CompilerVersion.xcconfig:

2011-08-12  Kalev Lember  <kalevlember@gmail.com>

        [GTK] Fix non-pthreads build after r91906.
        https://bugs.webkit.org/show_bug.cgi?id=66151

        Reviewed by David Levin.

        r91906 broke the non-pthreads GTK+ build by including a header which
        doesn't exist. Fix it by including DateMath.h instead of DateMap.h.

        * wtf/gtk/ThreadingGtk.cpp:

2011-08-12  Mark Rowe  <mrowe@apple.com>

        Update some configuration settings that were missed back in r92432.

        * Configurations/CompilerVersion.xcconfig:

2011-08-12  Filip Pizlo  <fpizlo@apple.com>

        REGRESSION (r91610?): Bing Maps fail to initialize (InvalidOperation:
        Matrix3D.invert)
        https://bugs.webkit.org/show_bug.cgi?id=66038

        Reviewed by Gavin Barraclough.
        
        Simplest and lowest-impact fix for the case where the spilled format
        of a DFG node differs from the register format: if the format is
        converted then indicate that the spilled value is no longer valid
        ("kill the spill").

        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::GenerationInfo::killSpilled):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillDouble):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):

2011-08-12  Sam Weinig  <sam@webkit.org>

        Move compiler specific macros to their own header
        https://bugs.webkit.org/show_bug.cgi?id=66119

        Reviewed by Anders Carlsson.

        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        Add Compiler.h

        * wtf/AlwaysInline.h:
        Move the contents of this file (which no longer was just about ALWAYS_INLINE) to
        Compiler.h.  We can remove this file in a later commit.

        * wtf/Compiler.h: Added.
        Put all compiler specific checks and features in this file.

        * wtf/Platform.h:
        Move COMPILER macro and definitions (and the odd WARN_UNUSED_RETURN compiler feature)
        to Compiler.h.  Include Compiler.h since it is necessary.

2011-08-11  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT-specific structure stub info code offset fields are signed
        8-bit, but it is possible for the offsets to be greater than 127
        https://bugs.webkit.org/show_bug.cgi?id=66122

        Reviewed by Gavin Barraclough.

        * bytecode/StructureStubInfo.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedGetById):
        (JSC::DFG::JITCodeGenerator::cachedPutById):

2011-08-11  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT speculation failure code sometimes picks the wrong register
        as a scratch register.
        https://bugs.webkit.org/show_bug.cgi?id=66104

        Reviewed by Gavin Barraclough.
        
        Hardened the code with more assertions and fixed the bug.  Now a
        spilled register is only used for scratch if it also isn't being
        used for shuffling.

        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::ShuffledRegister::handleNonCyclingPermutation):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):

2011-08-11  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r92880.
        http://trac.webkit.org/changeset/92880
        https://bugs.webkit.org/show_bug.cgi?id=66123

        Breaks compile in VS2010 (Requested by jamesr_ on #webkit).

        * wtf/PassRefPtr.h:

2011-08-11  Mark Rowe  <mrowe@apple.com>

        Don't conditionalize the use of -fomit-frame-pointer on compiler version as
        all of our supported compilers are now new enough to have the same, sane behavior.

        Rubber-stamped by Sam Weinig.

        * Configurations/JavaScriptCore.xcconfig:

2011-08-11  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT verbose mode does not report the generated types of nodes
        https://bugs.webkit.org/show_bug.cgi?id=65830

        Reviewed by Sam Weinig.
        
        Added code that prints the type selected for each node's result.

        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::dataFormatToString):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-08-11  James Robinson  <jamesr@chromium.org>

        nullptr can't be used for PassRefPtr
        https://bugs.webkit.org/show_bug.cgi?id=66024

        Reviewed by Anders Carlsson.

        * wtf/PassRefPtr.h:
        (WTF::PassRefPtr::PassRefPtr):

2011-08-11  Daniel Bates  <dbates@rim.com>

        Removed unused variable in StackBounds::initialize() to resolve
        compiler warning when building on QNX.
        https://bugs.webkit.org/show_bug.cgi?id=66072

        Reviewed by Antonio Gomes.

        * wtf/StackBounds.cpp:
        (WTF::StackBounds::initialize):

2011-08-11  Devdatta Deshpande  <pwjd73@motorola.com>

        Implementation of monotonically increasing clock on GTK
        https://bugs.webkit.org/show_bug.cgi?id=62175

        Reviewed by Martin Robinson.

        * wtf/CurrentTime.cpp:
        (WTF::monotonicallyIncreasingTime):
        The default implementation of monotonicallyIncreasingTime only
        guarantees the result to be non-decreasing.
        If the system time is changed to past then default implementation will
        still fail and WebCore timers will not fire.

2011-08-10  Geoffrey Garen  <ggaren@apple.com>

        Removed some incorrect code that was dead.

        Reviewed by Oliver Hunt.

        clearSingleTransition() wasn't resetting m_data. Luckily,
        no one cares, because its caller was unused. Removed both.

        * runtime/Structure.cpp:
        * runtime/StructureTransitionTable.h:
        (JSC::StructureTransitionTable::~StructureTransitionTable):

2011-08-10  Filip Pizlo  <fpizlo@apple.com>

        REGRESSION(r92670-r92744): WebKit crashes when opening Gmail
        https://bugs.webkit.org/show_bug.cgi?id=66010

        Reviewed by Oliver Hunt.
        
        Made sure that Construct calls use() on the this argument.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):

2011-08-10  Mark Hahnenberg  <mhahnenberg@apple.com>

        JSC should always throw when function arg list is too long
        https://bugs.webkit.org/show_bug.cgi?id=65869

        Reviewed by Oliver Hunt.

        Changed the behavior of the interpreter and JIT to throw an exception 
        when too many arguments are passed rather than truncating the list.  Added 
        a new method to create a "Too many arguments." exception used by this 
        new functionality.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/ExceptionHelpers.cpp:
        (JSC::createTooManyParamsError):
        * runtime/ExceptionHelpers.h:

2011-08-10  Oliver Hunt  <oliver@apple.com>

        Make GC checks more aggressive in release builds
        https://bugs.webkit.org/show_bug.cgi?id=66001

        Reviewed by Gavin Barraclough.

        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::visitStrongHandles):
        (JSC::HandleHeap::visitWeakHandles):
        (JSC::HandleHeap::finalizeWeakHandles):
        (JSC::HandleHeap::writeBarrier):
        (JSC::HandleHeap::isLiveNode):
        (JSC::HandleHeap::isValidWeakNode):
           Increase handle heap validation logic, and make some of
           the crashes trigger in release builds as well as debug.
        * heap/HandleHeap.h:
        (JSC::HandleHeap::allocate):
        (JSC::HandleHeap::makeWeak):
           Ditto
        * runtime/JSGlobalData.cpp:
        (WTF::Recompiler::operator()):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::visitChildren):
           Fix GC bugs found while testing this patch

2011-08-10  Oliver Hunt  <oliver@apple.com>

        JSEvaluteScript does not return the correct object when given JSONP data
        https://bugs.webkit.org/show_bug.cgi?id=66003

        Reviewed by Gavin Barraclough.

        Make sure we propagate the result of the function call rather than the
        argument.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):

2011-08-10  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT heap prediction causes regressions when combined with
        aggressive integer prediction
        https://bugs.webkit.org/show_bug.cgi?id=65954

        Reviewed by Gavin Barraclough.
        
        Disabled heap prediction, but did not remove the capability.
        This improves V8 crypto performance by 20%.

        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::predict):

2011-08-09  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not speculative integers as aggressively as it should
        https://bugs.webkit.org/show_bug.cgi?id=65949

        Reviewed by Gavin Barraclough.
        
        Added a tree walk to propagate integer predictions through arithmetic
        expressions.
        
        This is a 71% speed-up on Kraken's imaging-gaussian-blur, which
        translates to a 19% speed-up on Kraken overall.  It's neutral on
        other benchmarks.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::predictInt32):

2011-08-09  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT has no way of propagating predictions to loads and calls
        https://bugs.webkit.org/show_bug.cgi?id=65883

        Reviewed by Gavin Barraclough.
        
        This introduces the capability to store predictions on graph
        nodes.  To save space while being somewhat consistent, the
        prediction is always stored in the second OpInfo slot (since
        a GetById will use the first one for the identifier).  This
        change is a natural extension of r92593 (global variable
        prediction).
        
        This is a 1.5% win on V8 in the arithmetic mean, and a 0.6%
        win on V8 in the geometric mean.  It is neutral on SunSpider
        and Kraken.  Interestingly, on V8 it regresses crypto by 3%
        while progressing deltablue and richards by 2.6% and 4.3%,
        respectively.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::addToGraph):
        (JSC::DFG::ByteCodeParser::addCall):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::getPrediction):
        * dfg/DFGNode.h:
        (JSC::DFG::isCellPrediction):
        (JSC::DFG::isArrayPrediction):
        (JSC::DFG::isInt32Prediction):
        (JSC::DFG::isDoublePrediction):
        (JSC::DFG::isNumberPrediction):
        (JSC::DFG::predictionToString):
        (JSC::DFG::Node::Node):
        (JSC::DFG::Node::hasPrediction):
        (JSC::DFG::Node::getPrediction):
        (JSC::DFG::Node::predict):

2011-08-09  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT passes the this argument to constructors even though
        it's not necessary
        https://bugs.webkit.org/show_bug.cgi?id=65943

        Reviewed by Gavin Barraclough.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):

2011-08-09  Chao-ying Fu  <fu@mips.com>

        Fix one MIPS instruction to call JITStubThunked_##op
        https://bugs.webkit.org/show_bug.cgi?id=65942

        Reviewed by Gavin Barraclough.

        Changed "bal" to "jalr" for a possible processor mode change from
        MIPS32 to MIPS16.

        * jit/JITStubs.cpp:

2011-08-09  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT failure loading web site
        https://bugs.webkit.org/show_bug.cgi?id=65930

        Reviewed by Oliver Hunt.
        
        Put the use() call after the fpr()/gpr() calls, since doing otherwise
        breaks the register allocator.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):

2011-08-09  Mark Hahnenberg  <mhahnenberg@apple.com>

        Add ParentClass typedef in all JSC classes
        https://bugs.webkit.org/show_bug.cgi?id=65731

        Reviewed by Oliver Hunt.

        Just added the Base typedefs in all the classes that are a subclass of JSCell 
        to point at their parent classes.  This is a change to support future changes to the way
        constructors and destructors are implemented in JS objects, among other things.

        * API/JSCallbackConstructor.h:
        * API/JSCallbackFunction.h:
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::createStructure):
        (JSC::JSCallbackObject::visitChildren):
        * API/JSCallbackObjectFunctions.h:
        (JSC::::asCallbackObject):
        (JSC::::JSCallbackObject):
        (JSC::::init):
        (JSC::::className):
        (JSC::::getOwnPropertySlot):
        (JSC::::getOwnPropertyDescriptor):
        (JSC::::put):
        (JSC::::deleteProperty):
        (JSC::::getConstructData):
        (JSC::::construct):
        (JSC::::hasInstance):
        (JSC::::getCallData):
        (JSC::::call):
        (JSC::::getOwnPropertyNames):
        (JSC::::toNumber):
        (JSC::::toString):
        (JSC::::setPrivate):
        (JSC::::getPrivate):
        (JSC::::inherits):
        (JSC::::getStaticValue):
        (JSC::::staticFunctionGetter):
        (JSC::::callbackGetter):
        * debugger/DebuggerActivation.h:
        * jsc.cpp:
        * runtime/Arguments.h:
        * runtime/ArrayConstructor.h:
        * runtime/ArrayPrototype.h:
        * runtime/BooleanConstructor.h:
        * runtime/BooleanObject.h:
        * runtime/BooleanPrototype.h:
        * runtime/DateConstructor.h:
        * runtime/DateInstance.h:
        * runtime/DatePrototype.h:
        * runtime/Error.cpp:
        * runtime/ErrorConstructor.h:
        * runtime/ErrorInstance.h:
        * runtime/ErrorPrototype.h:
        * runtime/ExceptionHelpers.cpp:
        * runtime/Executable.h:
        * runtime/FunctionConstructor.h:
        * runtime/FunctionPrototype.h:
        * runtime/GetterSetter.h:
        * runtime/InternalFunction.h:
        * runtime/JSAPIValueWrapper.h:
        * runtime/JSActivation.h:
        * runtime/JSArray.h:
        * runtime/JSFunction.h:
        * runtime/JSGlobalObject.h:
        * runtime/JSNotAnObject.h:
        * runtime/JSONObject.h:
        * runtime/JSObject.h:
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSStaticScopeObject.h:
        * runtime/JSString.h:
        * runtime/JSVariableObject.h:
        * runtime/JSWrapperObject.h:
        * runtime/MathObject.h:
        * runtime/NativeErrorConstructor.h:
        * runtime/NativeErrorPrototype.h:
        * runtime/NumberConstructor.h:
        * runtime/NumberObject.h:
        * runtime/NumberPrototype.h:
        * runtime/ObjectConstructor.h:
        * runtime/ObjectPrototype.h:
        * runtime/RegExp.h:
        * runtime/RegExpConstructor.h:
        * runtime/RegExpMatchesArray.h:
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::create):
        * runtime/RegExpPrototype.h:
        * runtime/ScopeChain.h:
        * runtime/StrictEvalActivation.h:
        * runtime/StringConstructor.h:
        * runtime/StringObject.h:
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        * runtime/StringPrototype.h:
        * runtime/Structure.h:
        * runtime/StructureChain.h:

2011-08-08  Oliver Hunt  <oliver@apple.com>

        Using mprotect to create guard pages breaks our use of madvise to release executable memory
        https://bugs.webkit.org/show_bug.cgi?id=65870

        Reviewed by Gavin Barraclough.

        Use mmap rather than mprotect to clear guard page permissions.

        * wtf/OSAllocatorPosix.cpp:
        (WTF::OSAllocator::reserveAndCommit):

2011-08-08  Oliver Hunt  <oliver@apple.com>

        Non-extensibility does not prevent mutating [[Prototype]]
        https://bugs.webkit.org/show_bug.cgi?id=65832

        Reviewed by Gavin Barraclough.

        Disallow mutation of __proto__ on objects that are not extensible.

        * runtime/JSObject.cpp:
        (JSC::JSObject::put):

2011-08-08  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not track speculation decisions for global variables
        https://bugs.webkit.org/show_bug.cgi?id=65825

        Reviewed by Gavin Barraclough.
        
        Added the capability to track predictions for global variables, and
        ensured that code can abstract over the source of prediction (local
        versus global variable) wherever it is appropriate to do so.  Also
        cleaned up the code in SpeculativeJIT that decides how to speculate
        based on recorded predictions (for example instead of using isInteger,
        which makes sense for local predictions where the GetLocal would
        return an integer value, we now tend to use shouldSpeculateInteger,
        which checks if the value is either already an integer or should be
        speculated to be an integer).
        
        This is an 0.8% win on SunSpider, almost entirely thanks to a 25%
        win on controlflow-recursive.  It's also a 4.8% win on v8-crypto.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::predictArray):
        (JSC::DFG::ByteCodeParser::predictInt32):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::predictGlobalVar):
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::getGlobalVarPrediction):
        (JSC::DFG::Graph::getPrediction):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::shouldSpeculateInteger):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateDouble):

2011-08-07  Martin Robinson  <mrobinson@igalia.com>

        Distribution fix for GTK+.

        * GNUmakefile.list.am: Strip removed files from the source list.

2011-08-06  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65821
        Don't form identifiers the first time a string is used as a property name.

        Reviewed by Oliver Hunt.

        This is a 1% win on SunSpider.

        * dfg/DFGOperations.cpp:
            - Use fastGetOwnProperty.
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
            - Use fastGetOwnProperty.
        * runtime/JSCell.h:
        * runtime/JSObject.h:
        (JSC::JSCell::fastGetOwnProperty):
            - Fast call to get a property without creating an identifier the first time.
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyTable::find):
        (JSC::PropertyTable::findWithString):
            - Add interface to look up by either strinsg or identifiers.
        * runtime/Structure.h:
        (JSC::Structure::get):
            - Add a get() call that takes a UString, not an Identifier.
        * wtf/text/StringImpl.h:
        (WTF::StringImpl::hasHash):
            - Add a call to check if the has has been set (to detect the first use as a property name).

2011-08-06  Aron Rosenberg  <arosenberg@logitech.com>

        Reviewed by Benjamin Poulain.

        [Qt] Fix build with Intel compiler on Windows
        https://bugs.webkit.org/show_bug.cgi?id=65088

        Intel compiler needs .lib suffixes instead of .a
        Intel compiler doesn't support nullptr
        Intel compiler supports unsized arrays

        * JavaScriptCore.pri:
        * jsc.cpp:
        * wtf/ByteArray.h:
        * wtf/NullPtr.h:

2011-08-05  Gavin Barraclough  <barraclough@apple.com>

        String replace with the empty string means string removal
        https://bugs.webkit.org/show_bug.cgi?id=65799

        Reviewed by Sam Weinig.

        Optimization for String.prototype.replace([RegExp], ""), this improves v8-regexp by ~3%.

        * runtime/StringPrototype.cpp:
        (JSC::jsSpliceSubstrings):
        (JSC::stringProtoFuncReplace):

2011-08-05  Noel Gordon  <noel.gordon@gmail.com>

        [Chromium] Remove JSZombie references from gyp project files.
        https://bugs.webkit.org/show_bug.cgi?id=65798

        JSC runtime/JSZombie.{cpp,h} were removed in r92046.  Remove references to these
        file names from the gyp projects.

        Reviewed by Darin Adler.

        * JavaScriptCore.gypi: zombies be gone.

2011-08-05  Mark Rowe  <mrowe@apple.com>

        <http://webkit.org/b/65785> ThreadRestrictionVerifier needs a mode where an object
        is tied to a particular dispatch queue

        A RefCounted object can be opted in to this mode by calling setDispatchQueueForVerifier
        with the dispatch queue it will be tied to. This will cause ThreadRestrictionVerifier
        to ensure that all operations are performed on the given dispatch queue.

        Reviewed by Anders Carlsson.

        * wtf/RefCounted.h:
        (WTF::RefCountedBase::setDispatchQueueForVerifier):
        * wtf/ThreadRestrictionVerifier.h:
        (WTF::ThreadRestrictionVerifier::ThreadRestrictionVerifier):
        (WTF::ThreadRestrictionVerifier::~ThreadRestrictionVerifier):
        (WTF::ThreadRestrictionVerifier::setDispatchQueueMode):
        (WTF::ThreadRestrictionVerifier::setShared):
        (WTF::ThreadRestrictionVerifier::isSafeToUse):

2011-08-05  Oliver Hunt  <oliver@apple.com>

        Inline allocation of function objects
        https://bugs.webkit.org/show_bug.cgi?id=65779

        Reviewed by Gavin Barraclough.

        Inline allocation and initilisation of function objects
        in generated code.  This ended up being a 60-70% improvement
        in function allocation performance.  This improvement shows
        up as a ~2% improvement in 32bit sunspider and V8, but is a
        wash on 64-bit.

        We currently don't inline the allocation of named function
        expressions, as that requires being able to gc allocate a
        variable object.

        * jit/JIT.cpp:
        (JSC::JIT::privateCompileSlowCases):
        * jit/JIT.h:
        (JSC::JIT::emitStoreCell):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitAllocateBasicJSObject):
        (JSC::JIT::emitAllocateJSFinalObject):
        (JSC::JIT::emitAllocateJSFunction):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_new_func):
        (JSC::JIT::emitSlow_op_new_func):
        (JSC::JIT::emit_op_new_func_exp):
        (JSC::JIT::emitSlow_op_new_func_exp):
        * jit/JITOpcodes32_64.cpp:
            Removed duplicate implementation of op_new_func and op_new_func_exp
        * runtime/JSFunction.h:
        (JSC::JSFunction::offsetOfScopeChain):
        (JSC::JSFunction::offsetOfExecutable):

2011-08-04  David Levin  <levin@chromium.org>

        CStringBuffer should have thread safety checks turned on.
        https://bugs.webkit.org/show_bug.cgi?id=58093

        Reviewed by Dmitry Titov.

        * wtf/text/CString.h:
        (WTF::CStringBuffer::CStringBuffer): Removed the ifdef that
        turned this off for Chromium.

2011-08-04  Mark Rowe  <mrowe@apple.com>

        Future-proof Xcode configuration settings.

        * Configurations/Base.xcconfig:
        * Configurations/DebugRelease.xcconfig:
        * Configurations/JavaScriptCore.xcconfig:
        * Configurations/Version.xcconfig:

2011-08-04  Mark Hahnenberg  <mhahnenberg@apple.com>

        Interpreter can potentially GC in the middle of initializing a structure chain
        https://bugs.webkit.org/show_bug.cgi?id=65638

        Reviewed by Oliver Hunt.

        Moved the allocation of a prototype StructureChain before the initialization of 
        the structure chain within the interpreter that was causing intermittent GC crashes.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::tryCachePutByID):
        * wtf/Platform.h:

2011-08-04  Filip Pizlo  <fpizlo@apple.com>

        Eval handling attempts literal parsing even when the eval
        string is in the cache
        https://bugs.webkit.org/show_bug.cgi?id=65675

        Reviewed by Oliver Hunt.
        
        This is a 25% speed-up on date-format-tofte and a 1.5% speed-up overall
        in SunSpider.  It's neutral on V8.

        * bytecode/EvalCodeCache.h:
        (JSC::EvalCodeCache::tryGet):
        (JSC::EvalCodeCache::getSlow):
        (JSC::EvalCodeCache::get):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::callEval):

2011-08-03  Mark Rowe  <mrowe@apple.com>

        Bring some order to FeatureDefines.xcconfig to make it easier to follow.

        Reviewed by Sam Weinig.

        * Configurations/FeatureDefines.xcconfig:

2011-08-03  Mark Rowe  <mrowe@apple.com>

        Clean up FeatureDefines.xcconfig to remove some unnecessary conditional settings

        Reviewed by Dave Kilzer.

        * Configurations/FeatureDefines.xcconfig:

2011-08-03  Filip Pizlo  <fpizlo@apple.com>

        JSC GC heap size improvement breaks build on some platforms due to
        unused parameter
        https://bugs.webkit.org/show_bug.cgi?id=65641

        Reviewed by Darin Adler.
        
        Fix build on non-x86 platforms, by ensuring that the relevant
        parameter always appears to be used even when it isn't.

        * heap/Heap.cpp:

2011-08-03  Carlos Garcia Campos  <cgarcia@igalia.com>

        [GTK] Reorganize pkg-config files
        https://bugs.webkit.org/show_bug.cgi?id=65548

        Reviewed by Martin Robinson.

        * GNUmakefile.am:
        * javascriptcoregtk.pc.in: Renamed from Source/WebKit/gtk/javascriptcoregtk.pc.in.

2011-08-01  David Levin  <levin@chromium.org>

        Add asserts to RefCounted to make sure ref/deref happens on the right thread.
        https://bugs.webkit.org/show_bug.cgi?id=31639

        Reviewed by Dmitry Titov.

        * GNUmakefile.list.am: Added new files to the build.
        * JavaScriptCore.gypi: Ditto.
        * JavaScriptCore.vcproj/WTF/WTF.vcproj: Ditto.
        * JavaScriptCore.xcodeproj/project.pbxproj: Ditto.
        * jit/ExecutableAllocator.h:
        (JSC::ExecutablePool::ExecutablePool): Turned off checks for this
        due to not being able to figure out what was guarding it (bug 58091).
        * parser/SourceProvider.h:
        (JSC::SourceProvider::SourceProvider): Ditto.
        * wtf/CMakeLists.txt: Added new files to the build.
        * wtf/ThreadRestrictionVerifier.h: Added.
        Everything is done in the header to avoid the issue with exports
        that are only useful in debug but still needing to export them.
        * wtf/RefCounted.h:
        (WTF::RefCountedBase::ref): Added checks using the non thread safe verifier.
        and filed bug 58171 about making it stricter.
        (WTF::RefCountedBase::hasOneRef): Ditto.
        (WTF::RefCountedBase::refCount): Ditto.
        (WTF::RefCountedBase::setMutexForVerifier): Expose a way to change the checks to be based
        on a mutex. This is in the header to avoid adding more exports from JavaScriptCore.
        (WTF::RefCountedBase::deprecatedTurnOffVerifier): Temporary way to turn off verification.
        Filed bug 58174 to remove this method.
        (WTF::RefCountedBase::derefBase):
        * wtf/SizeLimits.cpp: Adjusted the debug size check for RefCounted.
        * wtf/text/CString.h:
        (WTF::CStringBuffer::CStringBuffer): Turned off checks for this while a fix is being
        done in Chromium (bug 58093).

2011-08-02  Filip Pizlo  <fpizlo@apple.com>

        JSC GC may not be able to reuse partially-free blocks after a
        full collection
        https://bugs.webkit.org/show_bug.cgi?id=65585

        Reviewed by Darin Adler.
        
        This fixes the linked list management bug.  This fix is performance
        neutral on SunSpider.

        * heap/NewSpace.cpp:
        (JSC::NewSpace::removeBlock):

2011-07-30  Oliver Hunt  <oliver@apple.com>

        Simplify JSFunction creation for functions written in JS
        https://bugs.webkit.org/show_bug.cgi?id=65422

        Reviewed by Gavin Barraclough.

        Remove hash lookups used to write name property and transition
        function structure by caching the resultant structure and property
        offset in JSGlobalObject.  This doesn't impact performance, but
        we can use this change to make other improvements later.

        * runtime/Executable.cpp:
        (JSC::FunctionExecutable::FunctionExecutable):
        * runtime/Executable.h:
        (JSC::ScriptExecutable::ScriptExecutable):
        (JSC::FunctionExecutable::jsName):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::namedFunctionStructure):
        (JSC::JSGlobalObject::functionNameOffset):

2011-08-02  Filip Pizlo  <fpizlo@apple.com>

        JSC GC uses dummy cells to avoid having to remember which cells
        it has already destroyed
        https://bugs.webkit.org/show_bug.cgi?id=65556

        Reviewed by Oliver Hunt.
        
        This gets rid of dummy cells, and ensures that it's not necessary
        to invoke a destructor on cells that have already been swept.  In
        the common case, a block knows that either all of its free cells
        still need to have destructors called, or none of them do, which
        minimizes the amount of branching that needs to happen per cell
        when performing a sweep.
        
        This is performance neutral on SunSpider and V8.  It is meant as
        a stepping stone to simplify the implementation of more
        sophisticated sweeping algorithms.

        * heap/Heap.cpp:
        (JSC::CountFunctor::ClearMarks::operator()):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::initForCellSize):
        (JSC::MarkedBlock::callDestructor):
        (JSC::MarkedBlock::specializedReset):
        (JSC::MarkedBlock::reset):
        (JSC::MarkedBlock::specializedSweep):
        (JSC::MarkedBlock::sweep):
        (JSC::MarkedBlock::produceFreeList):
        (JSC::MarkedBlock::lazySweep):
        (JSC::MarkedBlock::blessNewBlockForFastPath):
        (JSC::MarkedBlock::blessNewBlockForSlowPath):
        (JSC::MarkedBlock::canonicalizeBlock):
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::FreeCell::setNoObject):
        (JSC::MarkedBlock::setDestructorState):
        (JSC::MarkedBlock::destructorState):
        (JSC::MarkedBlock::notifyMayHaveFreshFreeCells):
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::JSCell):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::clearBuiltinStructures):
        * runtime/JSGlobalData.h:
        * runtime/Structure.h:

2011-08-01  Michael Saboff  <msaboff@apple.com>

        Virtual copying of FastMalloc allocated memory causes madvise MADV_FREE_REUSABLE errors
        https://bugs.webkit.org/show_bug.cgi?id=65502

        Reviewed by Anders Carlsson.

        With the fix of the issues causing madvise MADV_FREE_REUSABLE to fail,
        added an assert to the return code of madvise to catch any regressions.

        * wtf/TCSystemAlloc.cpp:
        (TCMalloc_SystemRelease):

2011-08-02  Anders Carlsson  <andersca@apple.com>

        Fix Windows build.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-08-02  Anders Carlsson  <andersca@apple.com>

        Fix a Windows build error.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-08-02  Filip Pizlo  <fpizlo@apple.com>

        JSC GC is far too conservative about growing the heap size, particularly
        on desktop platforms
        https://bugs.webkit.org/show_bug.cgi?id=65438

        Reviewed by Oliver Hunt.

        The minimum heap size is now 16MB instead of 512KB, provided all of the
        following are true:
        a) ENABLE(LARGE_HEAP) is set, which currently only happens on
           x86 targets, but could reasonably happen on any platform that is
           known to have a decent amount of RAM.
        b) JSGlobalData is initialized with HeapSize = LargeHeap, which
           currently only happens when it's the JSDOMWindowBase in WebCore or
           in the jsc command-line tool.
           
        This is a 4.1% speed-up on SunSpider.

        * JavaScriptCore.exp:
        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::collect):
        * heap/Heap.h:
        * jsc.cpp:
        (main):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::createContextGroup):
        (JSC::JSGlobalData::create):
        (JSC::JSGlobalData::createLeaked):
        (JSC::JSGlobalData::sharedInstance):
        * runtime/JSGlobalData.h:
        * wtf/Platform.h:

2011-08-02  Filip Pizlo  <fpizlo@apple.com>

        JSC does a GC even when the heap still has free pages
        https://bugs.webkit.org/show_bug.cgi?id=65445

        Reviewed by Oliver Hunt.
        
        If the high watermark is not reached, then we allocate new blocks as
        before.  If the current watermark does reach (or exceed) the high
        watermark, then we check if there is a block on the free block pool.
        If there is, we simply allocation from it.  If there isn't, we
        invoke a collectin as before.  This effectively couples the elastic
        scavenging to the collector's decision function.  That is, if an
        application rapidly varies its heap usage (sometimes using more and
        sometimes less) then the collector will not thrash as it used to.
        But if heap usage drops and stays low then the scavenger thread and
        the GC will eventually reach a kind of consensus: the GC will set
        the watermark low because of low heap usage, and the scavenger thread
        will steadily eliminate pages from the free page pool, until the size
        of the free pool is below the high watermark.
        
        On command-line, this is neutral on SunSpider and Kraken and a 3% win
        on V8.  In browser, this is a 1% win on V8 and neutral on the other
        two.

        * heap/Heap.cpp:
        (JSC::Heap::allocateSlowCase):
        (JSC::Heap::allocateBlock):
        * heap/Heap.h:

2011-08-02  Jeff Miller  <jeffm@apple.com>

        Move WTF_USE_AVFOUNDATION from JavaScriptCore/wtf/platform.h to WebCore/config.h
        https://bugs.webkit.org/show_bug.cgi?id=65552
        
        Since this is a WebCore feature, there's no need to define it in JavaScriptCore/wtf/platform.h.

        Reviewed by Adam Roben.

        * wtf/Platform.h: Removed WTF_USE_AVFOUNDATION.

2011-08-01  Jean-luc Brouillet  <jeanluc@chromium.org>

        Removing old source files in gyp files that slow build
        https://bugs.webkit.org/show_bug.cgi?id=65503

        Reviewed by Adam Barth.

        A number of stale files are listed in the gyp files. These slow the
        build on Visual Studio 2010. Removing them.

        * JavaScriptCore.gypi:

2011-07-14  David Levin  <levin@chromium.org>

        currentThread is too slow!
        https://bugs.webkit.org/show_bug.cgi?id=64577

        Reviewed by Darin Adler and Dmitry Titov.

        The problem is that currentThread results in a pthread_once call which always takes a lock.
        With this change, currentThread is 10% faster than isMainThread in release mode and only
        5% slower than isMainThread in debug.

        * wtf/ThreadIdentifierDataPthreads.cpp:
        (WTF::ThreadIdentifierData::initializeOnce): Remove the pthread once stuff
        which is no longer needed because this is called from initializeThreading().
        (WTF::ThreadIdentifierData::identifier): Remove the initializeKeyOnce call because
        intialization of the pthread key should already be done.
        (WTF::ThreadIdentifierData::initialize): Ditto.
        * wtf/ThreadIdentifierDataPthreads.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading): Acquire the pthread key here.

2011-08-01  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT sometimes creates speculation check data structures that have
        invalid information about the format of a register
        https://bugs.webkit.org/show_bug.cgi?id=65490

        Reviewed by Gavin Barraclough.
        
        The code now makes sure to (1) always have correct and up-to-date
        information about register format at the time that a speculation
        check is emitted, (2) assert that speculation data is correct
        inside the speculation check implementation, and (3) avoid creating
        speculation data altogether if compilation has already failed, since
        at that point the format data is almost guaranteed to be bogus.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::EntryLocation::EntryLocation):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculationCheck::SpeculationCheck):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::speculationCheck):

2011-08-01  Filip Pizlo  <fpizlo@apple.com>

        REGRESSION(r92092): Build fails on 64 bit
        https://bugs.webkit.org/show_bug.cgi?id=65458

        Reviewed by Oliver Hunt.
        
        The build was broken because some compilers were smart enough to see
        an array index out of bounds due to the decision fuction for when to
        go from precise size classes to imprecise size classes being broken:
        it would assume that sizes in the range 97..128 belonged to a precise
        size class when in fact they belonged to an imprecise one.
        
        In fact, the code would have run correctly, by way of a fluke, because
        though the 4th precise size class (for 97..128) didn't exist, the next
        array over from m_preciseSizeClasses was m_impreciseSizeClasses, and
        its first entry would have been a size class that is appropriate for
        allocations in the range 97..128.  However, this relies on specific
        ordering of fields in NewSpace, so it's still a bug.
        
        This fixes the bug by ensuring that allocations larger than 96 use
        the imprecise size classes.

        * heap/NewSpace.h:
        (JSC::NewSpace::sizeClassFor):

2011-07-31  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64679
        Fix bugs in Array.prototype this handling.

        Unreviewed - rolling out r91290.

        Looks like the wild wild web isn't ready for this yet.

        This change broke http://slides.html5rocks.com/#landing-slide.
        Interestingly, this might only be due to our lack of bind support -
        it looks like this site is calling  Array.prototype.slice as a part
        of its bind implementation.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncJoin):
        (JSC::arrayProtoFuncConcat):
        (JSC::arrayProtoFuncPop):
        (JSC::arrayProtoFuncPush):
        (JSC::arrayProtoFuncReverse):
        (JSC::arrayProtoFuncShift):
        (JSC::arrayProtoFuncSlice):
        (JSC::arrayProtoFuncSort):
        (JSC::arrayProtoFuncSplice):
        (JSC::arrayProtoFuncUnShift):
        (JSC::arrayProtoFuncFilter):
        (JSC::arrayProtoFuncMap):
        (JSC::arrayProtoFuncEvery):
        (JSC::arrayProtoFuncForEach):
        (JSC::arrayProtoFuncSome):
        (JSC::arrayProtoFuncReduce):
        (JSC::arrayProtoFuncReduceRight):
        (JSC::arrayProtoFuncIndexOf):
        (JSC::arrayProtoFuncLastIndexOf):

2011-07-31  Filip Pizlo  <fpizlo@apple.com>

        JSC GC lays out size classes under wrong assumptions about expected
        object size.
        https://bugs.webkit.org/show_bug.cgi?id=65437

        Reviewed by Oliver Hunt.
        
        Changed the atom size - which is both the smallest allocation size and
        the smallest possible stepping unit for size class spacing - from
        8 bytes to 4 pointer-size words.  This is a 1% win on SunSpider.

        * heap/MarkedBlock.h:

2011-07-31  Filip Pizlo  <fpizlo@apple.com>

        DFG non-speculative JIT does not optimize PutByVal
        https://bugs.webkit.org/show_bug.cgi?id=65424

        Reviewed by Gavin Barraclough.
        
        Added code to emit PutByVal inline fast path.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):

2011-07-31  Filip Pizlo  <fpizlo@apple.com>

        The JSC garbage collector returns memory to the operating system too
        eagerly.
        https://bugs.webkit.org/show_bug.cgi?id=65382

        Reviewed by Oliver Hunt.
        
        This introduces a memory reuse model similar to the one in FastMalloc.
        A periodic scavenger thread runs in the background and returns half the
        free memory to the OS on each timer fire.  New block allocations first
        attempt to get the memory from the collector's internal pool, reverting
        to OS allocation only when this pool is empty.

        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::~Heap):
        (JSC::Heap::destroy):
        (JSC::Heap::waitForRelativeTimeWhileHoldingLock):
        (JSC::Heap::waitForRelativeTime):
        (JSC::Heap::blockFreeingThreadStartFunc):
        (JSC::Heap::blockFreeingThreadMain):
        (JSC::Heap::allocateBlock):
        (JSC::Heap::freeBlocks):
        (JSC::Heap::releaseFreeBlocks):
        * heap/Heap.h:
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::destroy):
        (JSC::MarkedBlock::MarkedBlock):
        (JSC::MarkedBlock::initForCellSize):
        (JSC::MarkedBlock::reset):
        * heap/MarkedBlock.h:
        * wtf/Platform.h:

2011-07-30  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT speculation failure pass sometimes forgets to emit code to
        move certain registers.
        https://bugs.webkit.org/show_bug.cgi?id=65421

        Reviewed by Oliver Hunt.
        
        Restructured the offending loops (for gprs and fprs).  It's once again
        possible to use spreadsheets on docs.google.com.

        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):

2011-07-30  Patrick Gansterer  <paroga@webkit.org>

        Remove inclusion of MainThread.h from Threading.h
        https://bugs.webkit.org/show_bug.cgi?id=65081

        Reviewed by Darin Adler.

        Add missing and remove unneeded include statements for MainThread.

        * wtf/CryptographicallyRandomNumber.cpp:
        * wtf/Threading.h:
        * wtf/ThreadingPthreads.cpp:
        * wtf/text/StringStatics.cpp:

2011-07-30  Oliver Hunt  <oliver@apple.com>

        Reduce the size of JSGlobalObject slightly
        https://bugs.webkit.org/show_bug.cgi?id=65417

        Reviewed by Dan Bernstein.

        Push a few members that either aren't commonly used,
        or aren't frequently accessed into a separate struct.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::init):
        (JSC::JSGlobalObject::WeakMapsFinalizer::finalize):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObjectRareData::JSGlobalObjectRareData):
        (JSC::JSGlobalObject::createRareDataIfNeeded):
        (JSC::JSGlobalObject::setProfileGroup):
        (JSC::JSGlobalObject::profileGroup):
        (JSC::JSGlobalObject::registerWeakMap):
        (JSC::JSGlobalObject::deregisterWeakMap):

2011-07-30  Balazs Kelemen  <kbalazs@webkit.org>

        MessageQueue::waitForMessageFilteredWithTimeout can triggers an assertion
        https://bugs.webkit.org/show_bug.cgi?id=65263

        Reviewed by Dmitry Titov.

        * wtf/Deque.h:
        (WTF::::operator): Don't check the validity of an iterator
        that will be reassigned right now.
        * wtf/MessageQueue.h:
        (WTF::::removeIf): Revert r51198 as I beleave this is the better
        solution for the problem that was solved by that.

2011-07-29  Filip Pizlo  <fpizlo@apple.com>

        JSC GC zombie support no longer works, and is likely no longer needed.
        https://bugs.webkit.org/show_bug.cgi?id=65404

        Reviewed by Darin Adler.
        
        This removes zombies, because they no longer work, are not tested, are
        probably not needed, and are getting in the way of GC optimization
        work.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Handle.h:
        (JSC::HandleConverter::operator->):
        (JSC::HandleConverter::operator*):
        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::isValidWeakNode):
        * heap/Heap.cpp:
        (JSC::Heap::destroy):
        (JSC::Heap::collect):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::sweep):
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::clearMarks):
        * interpreter/Register.h:
        (JSC::Register::Register):
        (JSC::Register::operator=):
        * runtime/ArgList.h:
        (JSC::MarkedArgumentBuffer::append):
        (JSC::ArgList::ArgList):
        * runtime/JSCell.cpp:
        (JSC::isZombie):
        * runtime/JSCell.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::clearBuiltinStructures):
        * runtime/JSGlobalData.h:
        * runtime/JSValue.h:
        * runtime/JSValueInlineMethods.h:
        (JSC::JSValue::JSValue):
        * runtime/JSZombie.cpp: Removed.
        * runtime/JSZombie.h: Removed.
        * runtime/WriteBarrier.h:
        (JSC::WriteBarrierBase::setEarlyValue):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::setWithoutWriteBarrier):
        * wtf/Platform.h:

2011-07-29  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT verbose mode provides no details about predictions
        https://bugs.webkit.org/show_bug.cgi?id=65389

        Reviewed by Darin Adler.
        
        Added a print-out of the predictions to the IR dump, with names as follows:
        "p-bottom" = the parser made no predictions
        "p-int32" = the parser predicted int32
        ... (same for array, cell, double, number)
        "p-top" = the parser made conflicting predictions which will be ignored.

        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::predictionToString):

2011-07-29  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not have any way of undoing double speculation.
        https://bugs.webkit.org/show_bug.cgi?id=65334

        Reviewed by Gavin Barraclough.
        
        This adds code to do a branchConvertDoubleToInt on specualtion failure.
        This is performance-neutral on most benchmarks but does result in
        a slight improvement in Kraken.

        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::GeneralizedRegister::moveTo):
        (JSC::DFG::GeneralizedRegister::swapWith):
        (JSC::DFG::ShuffledRegister::handleNonCyclingPermutation):
        (JSC::DFG::ShuffledRegister::handleCyclingPermutation):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):

2011-07-29  Filip Pizlo  <fpizlo@apple.com>

        Crash when opening docs.google.com
        https://bugs.webkit.org/show_bug.cgi?id=65327

        Reviewed by Gavin Barraclough.
        
        The speculative JIT was only checking whether a value is an array when
        we had already checked that it was, rather then when we hadn't.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-28  Oliver Hunt  <oliver@apple.com>

        *_list instructions are only used in one place, where the code is wrong.
        https://bugs.webkit.org/show_bug.cgi?id=65348

        Reviewed by Darin Adler.

        Simply remove the instructions and all users.  Speeds up the interpreter
        slightly due to code motion, but otherwise has no effect (because none
        of the _list instructions are ever used).

        * bytecode/CodeBlock.cpp:
        (JSC::isPropertyAccess):
        (JSC::CodeBlock::dump):
        (JSC::CodeBlock::visitStructures):
        * bytecode/Instruction.h:
        * bytecode/Opcode.h:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):

2011-07-28  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65325
        Performance tweak to parseInt

        Reviewed by Oliver Hunt.

        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncParseInt):
            - This change may an existing optimization redundant,
              cleanup from Darin's comments, plus fix existing bugs.

2011-07-28  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65325
        Performance tweak to parseInt

        Reviewed by Oliver Hunt.

        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncParseInt):
            - parseInt applied to small positive numbers = floor.

2011-07-28  Dan Bernstein  <mitz@apple.com>

        Build fix.

        * runtime/Executable.cpp:
        (JSC::FunctionExecutable::compileForCallInternal):

2011-07-28  Kent Tamura  <tkent@chromium.org>

        Improve StringImpl::stripWhiteSpace() and simplifyWhiteSpace().
        https://bugs.webkit.org/show_bug.cgi?id=65300

        Reviewed by Darin Adler.

        r91837 had performance regression of StringImpl::stripWhiteSpace()
        and simplifyWhiteSpace(). This changes the code so that compilers
        generates code equivalent to r91836 or piror.

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::stripMatchedCharacters):
        A template member function for stripWhiteSpace(). This function takes a functor.
        (WTF::UCharPredicate):
        A functor for generic predicate for single UChar argument.
        (WTF::SpaceOrNewlinePredicate):
        A special functor for isSpaceOrNewline().
        (WTF::StringImpl::stripWhiteSpace):
        Use stripmatchedCharacters().
        (WTF::StringImpl::simplifyMatchedCharactersToSpace):
        A template member function for simplifyWhiteSpace().
        (WTF::StringImpl::simplifyWhiteSpace):
        Use simplifyMatchedCharactersToSpace().
        * wtf/text/StringImpl.h:

2011-07-27  Dmitry Lomov  <dslomov@google.com>

        [chromium] Turn on WTF_MULTIPLE_THREADS.
        https://bugs.webkit.org/show_bug.cgi?id=61017
        The patch turns on WTF_MULTIPLE_THREADS in chromium and 
        pushes some relevant initializations from JSC::initializeThreading
        to WTF::initializeThreading.

        Reviewed by David Levin.

        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * wtf/FastMalloc.cpp:
        (WTF::isForbidden):
        (WTF::fastMallocForbid):
        (WTF::fastMallocAllow):
        * wtf/Platform.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading):
        * wtf/ThreadingWin.cpp:
        (WTF::initializeThreading):
        * wtf/gtk/ThreadingGtk.cpp:
        (WTF::initializeThreading):
        * wtf/qt/ThreadingQt.cpp:
        (WTF::initializeThreading):

2011-07-27  Mark Hahnenberg  <mhahnenberg@apple.com>

        Remove operator new from JSCell
        https://bugs.webkit.org/show_bug.cgi?id=64999

        Reviewed by Oliver Hunt.

        Removed the implementation of operator new in JSCell, so any further uses
        will not successfully link.  Also removed any remaining uses of operator new.

        * API/JSContextRef.cpp:
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::create):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):
        (JSC::Interpreter::createExceptionScope):
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSCell.h:
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::create):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::create):
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        * runtime/StrictEvalActivation.h:
        (JSC::StrictEvalActivation::create):

2011-07-27  Filip Pizlo  <fpizlo@apple.com>

        DFG graph has no notion of double prediction.
        https://bugs.webkit.org/show_bug.cgi?id=65234

        Reviewed by Gavin Barraclough.
        
        Added the notion of PredictDouble, and PredictNumber, which is the least
        upper bound of PredictInt32 and PredictDouble.  Least upper bound is
        defined as the bitwise-or of two predictions.  Bottom is defined as 0,
        and Top is defined as all bits being set.  Added the ability to explicitly
        distinguish between a node having had a prediction associated with it,
        and that prediction still being valid (i.e. no conflicting predictions
        have also been added).  Used this to guard the speculative JIT from
        speculating Int32 in cases where the graph knows that the value is
        double, which currently only happens for GetLocal nodes on arguments
        which were double at compile-time.

        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::predictArgumentTypes):
        * dfg/DFGGraph.h:
        (JSC::DFG::isCellPrediction):
        (JSC::DFG::isArrayPrediction):
        (JSC::DFG::isInt32Prediction):
        (JSC::DFG::isDoublePrediction):
        (JSC::DFG::isNumberPrediction):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        (JSC::DFG::SpeculativeJIT::checkArgumentTypes):
        (JSC::DFG::SpeculativeJIT::initializeVariableTypes):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isRegisterDataFormatDouble):

2011-07-27  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65294
        DFG JIT - may speculate based on wrong arguments.

        Reviewed by Oliver Hunt

        In the case of a DFG compiled function calling to and compiling a second function that
        also compiles through the DFG JIT (i.e. compilation triggered with DFGOperations.cpp),
        we call compileFor passing the caller functions exec state, rather than the callee's.
        This may lead to mis-optimization, since the DFG compiler will example the exec state's
        arguments on the assumption that these will be passed to the callee - it is wanting the
        callee exec state, not the caller's exec state.

        Fixing this for all cases of compilation is tricksy, due to the way the numeric sort
        function is compiled, & the structure of the calls in the Interpreter::execute methods.
        Only fix for compilation from the JIT, in other calls don't speculate based on arguments
        for now.

        * dfg/DFGOperations.cpp:
        * runtime/Executable.cpp:
        (JSC::tryDFGCompile):
        (JSC::tryDFGCompileFunction):
        (JSC::FunctionExecutable::compileForCallInternal):
        * runtime/Executable.h:
        (JSC::FunctionExecutable::compileForCall):
        (JSC::FunctionExecutable::compileFor):

2011-07-27  Oliver Hunt  <oliver@apple.com>

        Handle callback oriented JSONP
        https://bugs.webkit.org/show_bug.cgi?id=65271

        Reviewed by Gavin Barraclough.

        Handle the callback oriented versions of JSONP.  The Literal parser
        now handles <Identifier> (. <Identifier>)* (jsonData).

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::tryJSONPParse):
        (JSC::LiteralParser::Lexer::lex):
        * runtime/LiteralParser.h:

2011-07-27  Stephanie Lewis  <slewis@apple.com>

        Revert http://trac.webkit.org/changeset/90415.
        Caused a 5% sunspider regression in-browser.

        Unreviewed rollout.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):
        * heap/Heap.cpp:
        (JSC::Heap::collectAllGarbage):
        * heap/MarkStack.h:
        (JSC::MarkStack::MarkStack):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::releaseExecutableMemory):
        * runtime/RegExp.cpp:
        (JSC::RegExp::compile):
        (JSC::RegExp::invalidateCode):
        * runtime/RegExp.h:

2011-07-27  Shinya Kawanaka  <shinyak@google.com>

        Added an interface to take IsWhiteSpaceFunctionPtr.
        https://bugs.webkit.org/show_bug.cgi?id=57746

        Reviewed by Kent Tamura.

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::stripWhiteSpace):
          Added an interface to take IsWhiteSpaceFunctionPtr.
        (WTF::StringImpl::simplifyWhiteSpace): ditto.
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.cpp:
        (WTF::String::stripWhiteSpace): ditto.
        (WTF::String::simplifyWhiteSpace): ditto.
        * wtf/text/WTFString.h:

2011-07-27  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT speculation failure code performs incorrect conversions in
        the case where two registers need to be swapped.
        https://bugs.webkit.org/show_bug.cgi?id=65233

        Reviewed by Gavin Barraclough.
        
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::GeneralizedRegister::swapWith):

2011-07-26  Mark Hahnenberg  <mhahnenberg@apple.com>

        reduce and reduceRight bind callback's this to null rather than undefined
        https://bugs.webkit.org/show_bug.cgi?id=62264

        Reviewed by Oliver Hunt.

        Fixed Array.prototype.reduce and Array.prototype.reduceRight so that they behave correctly
        when calling the callback function without an argument for this, which means it should 
        be undefined according to ES 15.4.4.21 and 15.4.4.22.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncReduce):
        (JSC::arrayProtoFuncReduceRight):

2011-07-26  Filip Pizlo  <fpizlo@apple.com>

        JSC command-line tool does not come with any facility for
        measuring time precisely.
        https://bugs.webkit.org/show_bug.cgi?id=65223

        Reviewed by Gavin Barraclough.
        
        Exposed WTF::currentTime() as currentTimePrecise().

        * jsc.cpp:
        (GlobalObject::GlobalObject):
        (functionPreciseTime):

2011-07-26  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT never emits inline double comparisons, even when it
        would be obvious more efficient to do so.
        https://bugs.webkit.org/show_bug.cgi?id=65212

        Reviewed by Gavin Barraclough.
        
        This handles the obvious case of inlining double comparisons: it only addresses
        the speculative JIT, and only for fused compare/branch sequences.  But it does
        handle the case where both operands are double (and there is no slow path),
        or where one operand is double and the other is unknown type (in which case it
        attempts to unbox the double, otherwise taking slow path).  This is an 0.8%
        speed-up on SunSpider.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::convertToDouble):
        (JSC::DFG::SpeculativeJIT::compilePeepHoleDoubleBranch):
        (JSC::DFG::SpeculativeJIT::compare):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isRegisterDataFormatDouble):
        (JSC::DFG::SpeculativeJIT::shouldSpeculateInteger):

2011-07-26  Filip Pizlo  <fpizlo@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64969
        DFG JIT generates inefficient code for speculation failures.

        Reviewed by Gavin Barraclough.
        
        This implements a speculation failure strategy where (1) values spilled on
        non-speculative but not spilled on speculative are spilled, (2) values that
        are in registers on both paths are rearranged without ever touching memory,
        and (3) values spilled on speculative but not spilled on non-speculative are
        filled.
        
        The register shuffling is the most interesting part of this patch.  It
        constructs a permutation graph for registers.  Each node represents a
        register, and each directed edge corresponds to the register's value having
        to be moved to a different register as part of the shuffling.  This is a
        directed graph where each node may only have 0 or 1 incoming edges, and
        0 or 1 outgoing edges.  The algorithm then first finds maximal non-cyclic
        subgraphs where all nodes in the subgraph are reachable from a start node.
        Such subgraphs always resemble linked lists, and correspond to simply
        moving the value in the second-to-last register into the last register, and
        then moving the value in the third-to-last register into the second-to-last
        register, and so on.  Once these subgraphs are taken care of, the remaining
        subgraphs are cycles, and are handled using either (a) conversion or no-op
        if the cycle involves one node, (b) swap if it involves two nodes, or (c)
        a cyclic shuffle involving a scratch register if there are three or more
        nodes.
        
        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::needDataFormatConversion):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::GeneralizedRegister::GeneralizedRegister):
        (JSC::DFG::GeneralizedRegister::createGPR):
        (JSC::DFG::GeneralizedRegister::createFPR):
        (JSC::DFG::GeneralizedRegister::dump):
        (JSC::DFG::GeneralizedRegister::findInSpeculationCheck):
        (JSC::DFG::GeneralizedRegister::findInEntryLocation):
        (JSC::DFG::GeneralizedRegister::previousDataFormat):
        (JSC::DFG::GeneralizedRegister::nextDataFormat):
        (JSC::DFG::GeneralizedRegister::convert):
        (JSC::DFG::GeneralizedRegister::moveTo):
        (JSC::DFG::GeneralizedRegister::swapWith):
        (JSC::DFG::ShuffledRegister::ShuffledRegister):
        (JSC::DFG::ShuffledRegister::isEndOfNonCyclingPermutation):
        (JSC::DFG::ShuffledRegister::handleNonCyclingPermutation):
        (JSC::DFG::ShuffledRegister::handleCyclingPermutation):
        (JSC::DFG::ShuffledRegister::lookup):
        (JSC::DFG::lookupForRegister):
        (JSC::DFG::NodeToRegisterMap::Tuple::Tuple):
        (JSC::DFG::NodeToRegisterMap::NodeToRegisterMap):
        (JSC::DFG::NodeToRegisterMap::set):
        (JSC::DFG::NodeToRegisterMap::end):
        (JSC::DFG::NodeToRegisterMap::find):
        (JSC::DFG::NodeToRegisterMap::clear):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        (JSC::DFG::JITCompiler::linkSpeculationChecks):
        * dfg/DFGJITCompiler.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::EntryLocation::EntryLocation):
        * dfg/DFGNonSpeculativeJIT.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculationCheck::SpeculationCheck):
        * dfg/DFGSpeculativeJIT.h:

2011-07-26  Oliver Hunt  <oliver@apple.com>

        Buffer overflow creating error messages for JSON.parse
        https://bugs.webkit.org/show_bug.cgi?id=65211

        Reviewed by Darin Adler.

        Parse string length to the UString constructor.

        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::parse):

2011-07-26  Mark Hahnenberg  <mhahnenberg@apple.com>

        Refactor automatically generated JS DOM bindings to replace operator new with static create methods
        https://bugs.webkit.org/show_bug.cgi?id=64732

        Reviewed by Oliver Hunt.

        Replacing the public constructors in the automatically generated JS DOM bindings with static 
        create methods.  JSByteArray is used by several of these bindings in WebCore.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::create):
        * runtime/JSByteArray.h:

2011-07-26  Alexis Menard  <alexis.menard@openbossa.org>

        Unreviewed build fix for Qt/Linux.

        On platforms with no glib and gstreamer we should not build javascriptcore
        with the Glib support. This is related to http://trac.webkit.org/changeset/91752.

        * wtf/wtf.pri:

2011-07-26  Juan C. Montemayor  <jmont@apple.com>

        JSON errors should be informative
        https://bugs.webkit.org/show_bug.cgi?id=63339

        Added error messages to the JSON Parser.

        Reviewed by Oliver Hunt.

        * runtime/JSONObject.cpp:
        (JSC::JSONProtoFuncParse):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::Lexer::lex):
        (JSC::LiteralParser::Lexer::lexString):
        (JSC::LiteralParser::Lexer::lexNumber):
        (JSC::LiteralParser::parse):
        * runtime/LiteralParser.h:
        (JSC::LiteralParser::getErrorMessage):
        (JSC::LiteralParser::Lexer::sawError):
        (JSC::LiteralParser::Lexer::getErrorMessage):

2011-07-26  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r91746.
        http://trac.webkit.org/changeset/91746
        https://bugs.webkit.org/show_bug.cgi?id=65180

        It broke SL build (Requested by Ossy on #webkit).

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::stripWhiteSpace):
        (WTF::StringImpl::simplifyWhiteSpace):
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.cpp:
        * wtf/text/WTFString.h:

2011-07-26  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Andreas Kling.

        [Qt] Change default backend to use GStreamer on Linux and QuickTime on Mac.
        https://bugs.webkit.org/show_bug.cgi?id=63472

        Enable the bits needed for GStreamer only when QtMultimedia is not used.

        * wtf/wtf.pri:

2011-07-26  Shinya Kawanaka  <shinyak@google.com>

        Added an interface to take IsWhiteSpaceFunctionPtr.
        https://bugs.webkit.org/show_bug.cgi?id=57746

        Reviewed by Kent Tamura.

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::stripWhiteSpace):
          Added an interface to take IsWhiteSpaceFunctionPtr.
        (WTF::StringImpl::simplifyWhiteSpace): ditto.
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.cpp:
        (WTF::String::stripWhiteSpace): ditto.
        (WTF::String::simplifyWhiteSpace): ditto.
        * wtf/text/WTFString.h:

2011-07-25  Filip Pizlo  <fpizlo@apple.com>

        DFG non-speculative JIT emits inefficient code for arithmetic
        involving two registers
        https://bugs.webkit.org/show_bug.cgi?id=65160

        Reviewed by Gavin Barraclough.
        
        The non-speculative JIT now emits inline code for double arithmetic, but
        still attempts integer arithmetic first.  This is a speed-up on SunSpider
        (albeit a small one), and a large speed-up on Kraken.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):

2011-07-25  Ryuan Choi  <ryuan.choi@samsung.com>

        [EFL] Build break with --debug after r89153.
        https://bugs.webkit.org/show_bug.cgi?id=65150

        Unreviewed build fix.

        * wtf/CMakeListsEfl.txt: Add missing libraries.

2011-07-25  Filip Pizlo  <fpizlo@apple.com>

        DFG non-speculative JIT emits obviously inefficient code for arithmetic
        where one operand is a constant.
        https://bugs.webkit.org/show_bug.cgi?id=65146

        Reviewed by Gavin Barraclough.
        
        Changed the code to emit double arithmetic inline.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):

2011-07-25  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT bytecode parser misuses pointers into objects allocated as part of a
        WTF::Vector.
        https://bugs.webkit.org/show_bug.cgi?id=65128

        Reviewed by Gavin Barraclough.
        
        The bytecode parser code seems to be right to have a DFGNode& phiNode reference
        into the graph, since this makes the code greatly more readable.  This patch
        thus makes the minimal change necessary to make the code right: it uses a
        pointer (to disambiguate between reloading the pointer and performing a
        copy from one location of the vector to another) and reloads it after the
        calls to addToGraph().

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::processPhiStack):

2011-07-25  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r91686.
        http://trac.webkit.org/changeset/91686
        https://bugs.webkit.org/show_bug.cgi?id=65144

        1.5% regression in JSC (Requested by jmontemayor on #webkit).

        * runtime/JSONObject.cpp:
        (JSC::JSONProtoFuncParse):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::Lexer::lex):
        (JSC::LiteralParser::Lexer::lexString):
        (JSC::LiteralParser::Lexer::lexNumber):
        (JSC::LiteralParser::parse):
        * runtime/LiteralParser.h:

2011-07-25  Jon Lee  <jonlee@apple.com>

        Assertion called in ExecutableBase::generatedJITCodeForCall() when JIT is not available
        https://bugs.webkit.org/show_bug.cgi?id=65132
        <rdar://problem/9836297>
        
        Reviewed by Oliver Hunt.
        
        Make sure the JIT is available to use before running the following calls:

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::unlinkCalls): Added check, return early if JIT is not available.
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addMethodCallLinkInfos): Added assertion.

2011-07-25  Juan C. Montemayor  <jmont@apple.com>

        JSON errors should be informative
        https://bugs.webkit.org/show_bug.cgi?id=63339

        Added error messages to the JSON Parser.

        Reviewed by Oliver Hunt.

        * runtime/JSONObject.cpp:
        (JSC::JSONProtoFuncParse):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::Lexer::lex):
        (JSC::LiteralParser::Lexer::lexString):
        (JSC::LiteralParser::Lexer::lexNumber):
        (JSC::LiteralParser::parse):
        * runtime/LiteralParser.h:
        (JSC::LiteralParser::getErrorMessage):
        (JSC::LiteralParser::Lexer::sawError):
        (JSC::LiteralParser::Lexer::getErrorMessage):

2011-07-25  Filip Pizlo  <fpizlo@apple.com>

        X86-64 assembler emits three instructions instead of two for certain
        loads and stores.
        https://bugs.webkit.org/show_bug.cgi?id=65095

        Reviewed by Gavin Barraclough.
        
        Simply made these four methods in the assembler use the scratch register,
        which they were previously avoiding.  It still optimizes for the case where
        an absolute address memory accesses is using EAX.  This results in a slight
        performance improvement.

        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::load32):
        (JSC::MacroAssemblerX86_64::store32):
        (JSC::MacroAssemblerX86_64::loadPtr):
        (JSC::MacroAssemblerX86_64::storePtr):

2011-07-25  Ryuan Choi  <ryuan.choi@samsung.com>

        [EFL] Implement EFL-specific current time and monotonicallyIncreasingTime.
        https://bugs.webkit.org/show_bug.cgi?id=64354

        Use ecore_time_unix_get which returns unix time as double type for currentTime
        and ecore_time_get which uses monotonic clock for monotonicallyIncreasingTime.

        Reviewed by Kent Tamura.

        * wtf/CurrentTime.cpp:
        (WTF::currentTime):
        (WTF::monotonicallyIncreasingTime):

2011-07-22  Sommer Panage  <panage@apple.com>

        Reviewed by Oliver Hunt.

        export JSContextCreateBacktrace as SPI in JSContextRefPrivate.h
        https://bugs.webkit.org/show_bug.cgi?id=64981

        UIAutomation for iOS would like to support a Javascript backtrace in our error logs.
        Currently, the C API does not provide the tools to do this. However, the private API
        does expose the necessary functionality to get a backtrace
        (via Interpreter::retrieveLastCaller). We recognize this information may result in
        failure in the cases of programs run by 'eval', stack frames beneath host function
        call frames, and in programs run from other programs. Thus, we propose exporting our
        JSContextCreateBacktrace in JSContextRefPrivate.h. This will provide us with the tools
        we need while not advertising an API that isn't really ready for full use.

        * API/JSContextRef.cpp:
        * API/JSContextRefPrivate.h:
        * JavaScriptCore.exp:


2011-07-22  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65051
        DFG JIT - Enable by default for mac platform on x86-64.

        Rubber Stamped by Geoff Garen.

        This is now a performance progression.

        * wtf/Platform.h:
            - Removed definition of ENABLE_DFG_JIT_RESTRICTIONS.

2011-07-22  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65047
        DFG JIT - Add support for op_resolve/op_resolve_base

        Reviewed by Sam Weinig.

        These are necessary for any significant eval code coverage
        (and as such increase LayoutTest coverage).

        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::recordResolve):
            - Conservatively blow aliasing optimizations for now.
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
            - Add support for op_resolve/op_resolve_base.
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::callOperation):
            - Add call with exec, identifer aguments.
        * dfg/DFGNode.h:
            - Add new node types.
        (JSC::DFG::Node::hasIdentifier):
            - Resolve nodes have identifiers, too!
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
            - Add generation for new Nodes.
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
            - Added new operations.
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
            - Add generation for new Nodes.

2011-07-22  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=65036
        Messing with the register allocation within flow control = badness.

        Reviewed by Sam Weinig.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
            - Fix register allocation.

2011-07-22  Mark Hahnenberg  <mhahnenberg@apple.com>

        Date.prototype.toISOString doesn't handle negative years or years > 9999 correctly.
        https://bugs.webkit.org/show_bug.cgi?id=63986

        Reviewed by Geoffrey Garen.

        Changed the implementation of Date.prototype.toISOString() to use the extended year
        format (+/-yyyyyy) for years outside of [0,9999] to be in compliance with ES 15.9.1.15.1.

        * runtime/DatePrototype.cpp:
        (JSC::dateProtoFuncToISOString):

2011-07-21  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-07-21  Ryosuke Niwa  <rniwa@webkit.org>

        Build fix after r91555.

        * JavaScriptCore.exp:

2011-07-21  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=19271
        eliminate PIC branches by changing NaN handling in JSValue::toNumber

        Reviewed by Sam Weinig.

        Moving the non-numeric cases out of line seems to be a consistent
        win on SunSpider for me, to the order of about 0.5%.

        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::toNumber):
            - Changed to only handle values that are already numbers, moce non-numeric cases out of line.
        * runtime/JSValue.cpp:
        (JSC::JSValue::toNumberSlowCase):
            - Added toNumberSlowCase, handling non-numeric cases.
        * runtime/JSValue.h:
            - Add declaration of toNumberSlowCase.

2011-07-21  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64875
        Use of `yield` keyword is broken

        Reviewed by Sam Weinig.

        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):
            - The bug here is that a successful match of a RESERVED_IF_STRICT token from
              parseKeyword is being nullified back to IDENT. The problem is that in the
              case of IDENT matches parseKeyword should not move the lexer's input
              position, but in the case of RESERVED_IF_STRICT it has done so.

2011-07-21  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64900
        Function.prototype.apply should accept an array-like object as its second argument

        Reviewed by Sam Weinig.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/FunctionPrototype.cpp:
        (JSC::functionProtoFuncApply):
            - Remove the type error if object is not an array.

2011-07-21  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64964
        DFG JIT - Enable support for eval code

        Reviewed by Sam Weinig.

        This is basically the same as program code, to the JIT!

        * bytecode/Opcode.cpp:
        * bytecode/Opcode.h:
            - Enable opcodeNames in !NDEBUG builds.
        * dfg/DFGOperations.cpp:
            - Fix a bug exposed by eval support, throw correct type error for new.
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
            - Enable DFG JIT for eval code.

2011-07-20  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r91380.
        http://trac.webkit.org/changeset/91380
        https://bugs.webkit.org/show_bug.cgi?id=64924

        Caused assertion failures in Chromium's IndexedDB tests
        (Requested by rniwa on #webkit).

        * wtf/ThreadIdentifierDataPthreads.cpp:
        (WTF::ThreadIdentifierData::identifier):
        (WTF::ThreadIdentifierData::initialize):
        (WTF::ThreadIdentifierData::initializeKeyOnceHelper):
        (WTF::ThreadIdentifierData::initializeKeyOnce):
        * wtf/ThreadIdentifierDataPthreads.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading):

2011-07-20  Filip Pizlo  <fpizlo@apple.com>

        DFG non-speculative JIT does not use() the aliased GetByVal,
        resulting in bloated use counts.
        https://bugs.webkit.org/show_bug.cgi?id=64911

        Reviewed by Gavin Barraclough.
        
        Inserted a call to use() for the aliased GetByVal.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):

2011-07-20  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64909
        DFG JIT - Missing ToInt32 conversions for double constants.

        Reviewed by Sam Weinig.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::toInt32):
            - We cannot trivially omit ToInt32 conversions on double constants.

2011-07-20  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT sometimes claims to use compare operands twice, leading to
        use count corruption.
        https://bugs.webkit.org/show_bug.cgi?id=64903

        Reviewed by Gavin Barraclough.
        
        Move the calls to use() in SpeculativeJIT::compare() so that they only happen
        if the JITCodeGenerator's helper method (which also calls use()) is not called.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compare):

2011-07-20  Oliver Hunt  <oliver@apple.com>

        Don't throw away code when JSGarbageCollect API is called
        https://bugs.webkit.org/show_bug.cgi?id=64894

        Reviewed by Sam Weinig.

        Just call collectAllGarbage.  That will clean up all unneeded
        code without causing any pathological recompilation problems.

        * API/JSBase.cpp:
        (JSGarbageCollect):

2011-07-20  Oliver Hunt  <oliver@apple.com>

        Codeblock doesn't visit cached structures in global resolve instructions
        https://bugs.webkit.org/show_bug.cgi?id=64889

        Reviewed by Sam Weinig.

        Visit the global resolve instructions.  This fixes a couple
        of random crashes seen in the jquery tests when using the
        interpreter.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):

2011-07-20  James Robinson  <jamesr@chromium.org>

        Revert worker and WebKit2 runloops to use currentTime() for scheduling instead of the monotonic clock
        https://bugs.webkit.org/show_bug.cgi?id=64841

        Reviewed by Mark Rowe.

        http://trac.webkit.org/changeset/91206 converted most of WebKit's deferred work scheduling to using the
        monotonic clock instead of WTF::currentTime().  This broke many plugin tests on WebKit2 for reasons that are
        unclear.  This reverts everything except for WebCore::ThreadTimers back to the previous behavior.

        * wtf/ThreadingPthreads.cpp:
        (WTF::ThreadCondition::timedWait):
        * wtf/ThreadingWin.cpp:
        (WTF::absoluteTimeToWaitTimeoutInterval):
        * wtf/gtk/ThreadingGtk.cpp:
        (WTF::ThreadCondition::timedWait):
        * wtf/qt/ThreadingQt.cpp:
        (WTF::ThreadCondition::timedWait):

2011-07-14  David Levin  <levin@chromium.org>

        currentThread is too slow!
        https://bugs.webkit.org/show_bug.cgi?id=64577

        Reviewed by Darin Adler and Dmitry Titov.

        The problem is that currentThread results in a pthread_once call which always takes a lock.
        With this change, currentThread is 10% faster than isMainThread in release mode and only
        5% slower than isMainThread in debug.

        * wtf/ThreadIdentifierDataPthreads.cpp:
        (WTF::ThreadIdentifierData::initializeOnce): Remove the pthread once stuff
        which is no longer needed because this is called from initializeThreading().
        (WTF::ThreadIdentifierData::identifier): Remove the initializeKeyOnce call because
        intialization of the pthread key should already be done.
        (WTF::ThreadIdentifierData::initialize): Ditto.
        * wtf/ThreadIdentifierDataPthreads.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading): Acquire the pthread key here.

2011-07-20  Mark Rowe  <mrowe@apple.com>

        Fix the 32-bit build.

        * runtime/ObjectPrototype.cpp:
        (JSC::objectProtoFuncToString):

2011-07-19  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64678
        Fix bugs in Object.prototype this handling.

        Reviewed by Darin Adler.

        Fix ES5.1 correctness issues identified by Mads Ager.

        * runtime/ObjectPrototype.cpp:
        (JSC::objectProtoFuncToString):
            - ES5.1 expects toString of undefined/null to produce "[object Undefined]"/"[object Null]".

2011-07-19  Mark Hahnenberg  <mhahnenberg@apple.com>

        [JSC] WebKit allocates gigabytes of memory when doing repeated string concatenation
        https://bugs.webkit.org/show_bug.cgi?id=63918

        Reviewed by Darin Adler.

        When allocating JSStrings during concatenation, we needed to call the Heap's reportExtraMemoryCost
        method due to additional string copying within several of the constructors when dealing with 
        UStrings.  This has been added to the UString version of the appendStringInConstruct method 
        within the JSString class.

        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        (JSC::RopeBuilder::appendStringInConstruct):

2011-07-19  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64679
        Fix bugs in Array.prototype this handling.

        Reviewed by Oliver Hunt.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncJoin):
        (JSC::arrayProtoFuncConcat):
        (JSC::arrayProtoFuncPop):
        (JSC::arrayProtoFuncPush):
        (JSC::arrayProtoFuncReverse):
        (JSC::arrayProtoFuncShift):
        (JSC::arrayProtoFuncSlice):
        (JSC::arrayProtoFuncSort):
        (JSC::arrayProtoFuncSplice):
        (JSC::arrayProtoFuncUnShift):
        (JSC::arrayProtoFuncFilter):
        (JSC::arrayProtoFuncMap):
        (JSC::arrayProtoFuncEvery):
        (JSC::arrayProtoFuncForEach):
        (JSC::arrayProtoFuncSome):
        (JSC::arrayProtoFuncReduce):
        (JSC::arrayProtoFuncReduceRight):
        (JSC::arrayProtoFuncIndexOf):
        (JSC::arrayProtoFuncLastIndexOf):
            - These methods should throw if this value is undefined.

2011-07-19  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64677
        Fix bugs in String.prototype this handling.

        Reviewed by Oliver Hunt.

        undefined/null this values should throw TypeErrors, not convert to
        the global object, and primitive values should not be converted via
        object types.

        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncReplace):
        (JSC::stringProtoFuncCharAt):
        (JSC::stringProtoFuncCharCodeAt):
        (JSC::stringProtoFuncIndexOf):
        (JSC::stringProtoFuncLastIndexOf):
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):
        (JSC::stringProtoFuncSlice):
        (JSC::stringProtoFuncSplit):
        (JSC::stringProtoFuncSubstr):
        (JSC::stringProtoFuncSubstring):
        (JSC::stringProtoFuncToLowerCase):
        (JSC::stringProtoFuncToUpperCase):
        (JSC::stringProtoFuncLocaleCompare):
        (JSC::stringProtoFuncBig):
        (JSC::stringProtoFuncSmall):
        (JSC::stringProtoFuncBlink):
        (JSC::stringProtoFuncBold):
        (JSC::stringProtoFuncFixed):
        (JSC::stringProtoFuncItalics):
        (JSC::stringProtoFuncStrike):
        (JSC::stringProtoFuncSub):
        (JSC::stringProtoFuncSup):
        (JSC::stringProtoFuncFontcolor):
        (JSC::stringProtoFuncFontsize):
        (JSC::stringProtoFuncAnchor):
        (JSC::stringProtoFuncLink):
        (JSC::trimString):
            - These methods should throw if this value is undefined,
              convert ToString directly, not via ToObject.

2011-07-19  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT sometimes emits spill code even when the respective values
        are never needed.
        https://bugs.webkit.org/show_bug.cgi?id=64774

        Reviewed by Gavin Barraclough.
        
        The main high-level change is that it is now easier to call use() on a
        virtual register.  JSValueOperand and its other-typed relatives now have
        a handy use() method, and jsValueResult() and friends now make it easier to
        pass UseChildrenCalledExplicitly.
        
        The rest of this patch hoists the call to use() as high as possible for
        all of those cases where either flushRegisters() or silentSpillAllRegisters()
        may be called.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedGetById):
        (JSC::DFG::JITCodeGenerator::cachedGetMethod):
        (JSC::DFG::JITCodeGenerator::nonSpeculativePeepholeBranch):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeCompare):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeCompare):
        (JSC::DFG::JITCodeGenerator::nonSpeculativePeepholeStrictEq):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeStrictEq):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeStrictEq):
        (JSC::DFG::JITCodeGenerator::emitBranch):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::use):
        (JSC::DFG::JITCodeGenerator::integerResult):
        (JSC::DFG::JITCodeGenerator::jsValueResult):
        (JSC::DFG::IntegerOperand::use):
        (JSC::DFG::DoubleOperand::use):
        (JSC::DFG::JSValueOperand::use):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::valueToNumber):
        (JSC::DFG::NonSpeculativeJIT::valueToInt32):
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculateStrictInt32Operand::use):
        (JSC::DFG::SpeculateCellOperand::use):

2011-07-19  Xan Lopez  <xlopez@igalia.com>

        ARMv7 backend broken, lacks 3 parameter rshift32 method
        https://bugs.webkit.org/show_bug.cgi?id=64571

        Reviewed by Zoltan Herczeg.

        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::rshift32): add missing rshift32 method.

2011-07-18  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not optimize strict equality as effectively as the old JIT does.
        https://bugs.webkit.org/show_bug.cgi?id=64759

        Reviewed by Gavin Barraclough.
        
        This adds a more complete set of strict equality optimizations.  If either
        operand is known numeric, then the code reverts to the old style of optimizing
        (first try integer comparison).  Otherwise it uses the old JIT's trick of
        first simultaneously checking if both operands are either numbers or cells;
        if not then a fast path is taken.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::nonSpeculativePeepholeStrictEq):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeStrictEq):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeStrictEq):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-18  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64760
        DFG JIT - Should be able to compile program code.

        Reviewed by Geoff Garen.

        Add support for op_end, hooks to compile program code in Executable.cpp.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
            - Add support for op_end
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileEntry):
        (JSC::DFG::JITCompiler::compileBody):
        (JSC::DFG::JITCompiler::link):
            - Added, separate out steps of compileFunction.
        (JSC::DFG::JITCompiler::compile):
            - Added, compile program code.
        (JSC::DFG::JITCompiler::compileFunction):
            - Sections separated out to helper functions.
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::JITCompiler):
            - Added m_exceptionCheckCount.
        * runtime/Executable.cpp:
        (JSC::tryDFGCompile):
        (JSC::tryDFGCompileFunction):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileForCallInternal):
            - Renamed tryDFGCompile to tryDFGCompileFunction, added tryDFGCompile to compile program code.

2011-07-18  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64678
        Fix bugs in Object.prototype this handling.

        Reviewed by Oliver Hunt.

        undefined/null this values should throw TypeErrors, not convert to the global object,
        also, to toLocaleString should be calling the ToObject & invoking the object's toString
        function, even for values that are already strings.

        * runtime/ObjectPrototype.cpp:
        (JSC::objectProtoFuncValueOf):
        (JSC::objectProtoFuncHasOwnProperty):
        (JSC::objectProtoFuncIsPrototypeOf):
        (JSC::objectProtoFuncPropertyIsEnumerable):
        (JSC::objectProtoFuncToLocaleString):
        (JSC::objectProtoFuncToString):

2011-07-18  Filip Pizlo  <fpizlo@apple.com>

        JSC GC lazy sweep does not inline the common cases of cell destruction.
        https://bugs.webkit.org/show_bug.cgi?id=64745

        Reviewed by Oliver Hunt.
        
        This inlines the case of JSFinalObject destruction.

        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::lazySweep):

2011-07-18  Oliver Hunt  <oliver@apple.com>

        Interpreter build-fix

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):

2011-07-18  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not optimize equal-null comparisons and branches.
        https://bugs.webkit.org/show_bug.cgi?id=64659

        Reviewed by Gavin Barraclough.
        
        Added a peephole-aware compare-to-null implementation to JITCodeGenerator,
        which is used by both the speculative and non-speculative JIT.  Through
        the use of the new isNullConstant helper, the two JITs invoke the
        nonSpecualtiveCompareNull() helper instead of their regular comparison
        helpers when compiling CompareEq.  Through the use of the new isKnownCell
        helper, the compare-null code will skip the is-a-cell check if the
        speculative JIT had been speculating cell.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isKnownCell):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeCompareNull):
        (JSC::DFG::JITCodeGenerator::nonSpeculativePeepholeBranchNull):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeCompareNull):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::isNullConstant):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-18  James Robinson  <jamesr@chromium.org>

        Timer scheduling should be based off the monotonic clock
        https://bugs.webkit.org/show_bug.cgi?id=64544

        Reviewed by Darin Adler.

        Switches ThreadCondition::timedWait and related utility functions from currentTime() to
        monotonicallyIncreasingTime().

        Add WTF::monotonicallyIncreasingTime() to list of exported functions so it can be accessed from WebCore/WebKit.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * wtf/ThreadingPthreads.cpp:
        (WTF::ThreadCondition::timedWait):
        * wtf/ThreadingWin.cpp:
        (WTF::absoluteTimeToWaitTimeoutInterval):
        * wtf/gtk/ThreadingGtk.cpp:
        (WTF::ThreadCondition::timedWait):
        * wtf/qt/ThreadingQt.cpp:
        (WTF::ThreadCondition::timedWait):

2011-07-18  Filip Pizlo  <fpizlo@apple.com>

        JSC JIT does not inline GC allocation fast paths
        https://bugs.webkit.org/show_bug.cgi?id=64582

        Reviewed by Oliver Hunt.

        This addresses inlining allocation for the easiest-to-allocate cases:
        op_new_object and op_create_this.  Inlining GC allocation fast paths
        required three changes.  First, the JSGlobalData now saves the vtable
        pointer of JSFinalObject, since that's what op_new_object and
        op_create_this allocate.  Second, the Heap exposes a reference to
        the appropriate SizeClass, so that the JIT may inline accesses
        directly to the SizeClass for JSFinalObject allocations.  And third,
        the JIT is extended with code to emit inline fast paths for GC
        allocation.  A stub call is emitted in the case where the inline fast
        path fails.

        * heap/Heap.h:
        (JSC::Heap::sizeClassFor):
        (JSC::Heap::allocate):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileSlowCases):
        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitAllocateJSFinalObject):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_new_object):
        (JSC::JIT::emitSlow_op_new_object):
        (JSC::JIT::emit_op_create_this):
        (JSC::JIT::emitSlow_op_create_this):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_new_object):
        (JSC::JIT::emitSlow_op_new_object):
        (JSC::JIT::emit_op_create_this):
        (JSC::JIT::emitSlow_op_create_this):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs):
        * runtime/JSGlobalData.h:
        * runtime/JSObject.h:
        (JSC::JSFinalObject::JSFinalObject):
        (JSC::JSObject::offsetOfInheritorID):

2011-07-18  Mark Hahnenberg  <mhahnenberg@apple.com>

        Refactor JSC to replace JSCell::operator new with static create method
        https://bugs.webkit.org/show_bug.cgi?id=64466

        Reviewed by Oliver Hunt (oliver@apple.com) and Darin Adler (darin@apple.com).

        First step in a longer refactoring process to remove the use of
        operator new overloading in order to allocate GC objects and to replace
        this method with static create methods for each individual type of heap-allocated
        JS object.  This particular patch only deals with replacing uses of
        operator new within JSC proper.  Future patches will remove it from the
        parts that interface with the DOM.  Due to the DOM's continued dependence
        on it, operator new has not actually been removed from JSCell.

        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::create):
        * API/JSCallbackFunction.h:
        (JSC::JSCallbackFunction::create):
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::operator new):
        (JSC::JSCallbackObject::create):
        * API/JSCallbackObjectFunctions.h:
        (JSC::::staticFunctionGetter):
        * API/JSClassRef.cpp:
        (OpaqueJSClass::prototype):
        * API/JSContextRef.cpp:
        * API/JSObjectRef.cpp:
        (JSObjectMake):
        (JSObjectMakeFunctionWithCallback):
        (JSObjectMakeConstructor):
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::createActivation):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
        * bytecompiler/BytecodeGenerator.h:
        (JSC::BytecodeGenerator::makeFunction):
        * bytecompiler/NodesCodegen.cpp:
        (JSC::RegExpNode::emitBytecode):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        (JSC::Interpreter::retrieveArguments):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jsc.cpp:
        (GlobalObject::create):
        (GlobalObject::GlobalObject):
        (functionRun):
        (jscmain):
        * runtime/Arguments.h:
        (JSC::Arguments::create):
        (JSC::Arguments::createNoParameters):
        * runtime/ArrayConstructor.cpp:
        (JSC::constructArrayWithSizeQuirk):
        * runtime/ArrayConstructor.h:
        (JSC::ArrayConstructor::create):
        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncSplice):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::create):
        * runtime/BooleanConstructor.cpp:
        (JSC::constructBoolean):
        (JSC::constructBooleanFromImmediateBoolean):
        * runtime/BooleanConstructor.h:
        (JSC::BooleanConstructor::create):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::create):
        * runtime/BooleanPrototype.h:
        (JSC::BooleanPrototype::create):
        * runtime/DateConstructor.cpp:
        (JSC::constructDate):
        * runtime/DateConstructor.h:
        (JSC::DateConstructor::create):
        * runtime/DateInstance.h:
        (JSC::DateInstance::create):
        * runtime/DatePrototype.h:
        (JSC::DatePrototype::create):
        * runtime/Error.cpp:
        (JSC::createError):
        (JSC::createEvalError):
        (JSC::createRangeError):
        (JSC::createReferenceError):
        (JSC::createSyntaxError):
        (JSC::createTypeError):
        (JSC::createURIError):
        (JSC::StrictModeTypeErrorFunction::create):
        (JSC::createTypeErrorFunction):
        * runtime/ErrorConstructor.h:
        (JSC::ErrorConstructor::create):
        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::ErrorInstance):
        (JSC::ErrorInstance::create):
        * runtime/ErrorInstance.h:
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::create):
        * runtime/ExceptionHelpers.cpp:
        (JSC::InterruptedExecutionError::InterruptedExecutionError):
        (JSC::InterruptedExecutionError::create):
        (JSC::createInterruptedExecutionException):
        (JSC::TerminatedExecutionError::TerminatedExecutionError):
        (JSC::TerminatedExecutionError::create):
        (JSC::createTerminatedExecutionException):
        * runtime/Executable.cpp:
        (JSC::FunctionExecutable::FunctionExecutable):
        (JSC::FunctionExecutable::fromGlobalCode):
        * runtime/Executable.h:
        (JSC::ExecutableBase::create):
        (JSC::NativeExecutable::create):
        (JSC::ScriptExecutable::ScriptExecutable):
        (JSC::EvalExecutable::create):
        (JSC::ProgramExecutable::create):
        (JSC::FunctionExecutable::create):
        (JSC::FunctionExecutable::make):
        * runtime/FunctionConstructor.cpp:
        (JSC::constructFunctionSkippingEvalEnabledCheck):
        * runtime/FunctionConstructor.h:
        (JSC::FunctionConstructor::create):
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::addFunctionProperties):
        * runtime/FunctionPrototype.h:
        (JSC::FunctionPrototype::create):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::create):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::create):
        (JSC::jsAPIValueWrapper):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::argumentsGetter):
        * runtime/JSActivation.h:
        (JSC::JSActivation::create):
        * runtime/JSArray.h:
        (JSC::JSArray::create):
        * runtime/JSCell.h:
        (JSC::JSCell::allocateCell):
        * runtime/JSFunction.h:
        (JSC::JSFunction::create):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::init):
        (JSC::JSGlobalObject::reset):
        * runtime/JSGlobalObject.h:
        (JSC::constructEmptyArray):
        (JSC::constructArray):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::create):
        * runtime/JSONObject.h:
        (JSC::JSONObject::create):
        * runtime/JSObject.cpp:
        (JSC::JSObject::defineGetter):
        (JSC::JSObject::defineSetter):
        (JSC::putDescriptor):
        * runtime/JSObject.h:
        (JSC::JSFinalObject::create):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::create):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::create):
        * runtime/JSString.cpp:
        (JSC::JSString::substringFromRope):
        (JSC::JSString::replaceCharacter):
        (JSC::StringObject::create):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        (JSC::RopeBuilder::create):
        (JSC::RopeBuilder::createHasOtherOwner):
        (JSC::jsSingleCharacterString):
        (JSC::jsSingleCharacterSubstring):
        (JSC::jsNontrivialString):
        (JSC::jsString):
        (JSC::jsSubstring):
        (JSC::jsOwnedString):
        * runtime/JSValue.cpp:
        (JSC::JSValue::toObjectSlowCase):
        (JSC::JSValue::synthesizeObject):
        (JSC::JSValue::synthesizePrototype):
        * runtime/Lookup.cpp:
        (JSC::setUpStaticFunctionSlot):
        * runtime/MathObject.h:
        (JSC::MathObject::create):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::create):
        * runtime/NativeErrorPrototype.h:
        (JSC::NativeErrorPrototype::create):
        * runtime/NumberConstructor.cpp:
        (JSC::constructWithNumberConstructor):
        * runtime/NumberConstructor.h:
        (JSC::NumberConstructor::create):
        * runtime/NumberObject.cpp:
        (JSC::constructNumber):
        * runtime/NumberObject.h:
        (JSC::NumberObject::create):
        * runtime/NumberPrototype.h:
        (JSC::NumberPrototype::create):
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::create):
        * runtime/ObjectPrototype.h:
        (JSC::ObjectPrototype::create):
        * runtime/Operations.h:
        (JSC::jsString):
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        (JSC::RegExp::createWithoutCaching):
        (JSC::RegExp::create):
        * runtime/RegExp.h:
        * runtime/RegExpCache.cpp:
        (JSC::RegExpCache::lookupOrCreate):
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructor::arrayOfMatches):
        (JSC::constructRegExp):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::create):
        * runtime/RegExpMatchesArray.h:
        (JSC::RegExpMatchesArray::create):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::create):
        * runtime/RegExpPrototype.cpp:
        (JSC::regExpProtoFuncCompile):
        * runtime/RegExpPrototype.h:
        (JSC::RegExpPrototype::create):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::create):
        (JSC::ScopeChainNode::push):
        * runtime/SmallStrings.cpp:
        (JSC::SmallStrings::createEmptyString):
        (JSC::SmallStrings::createSingleCharacterString):
        * runtime/StringConstructor.cpp:
        (JSC::constructWithStringConstructor):
        * runtime/StringConstructor.h:
        (JSC::StringConstructor::create):
        * runtime/StringObject.h:
        (JSC::StringObject::create):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::create):
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::create):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::Structure::createStructure):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):

2011-07-17  Ryuan Choi  <ryuan.choi@samsung.com>

        [EFL] Refactor scheduleDispatchFunctionsOnMainThread to fix crash.
        https://bugs.webkit.org/show_bug.cgi?id=64337

        Replace ecore_timer_add to Ecore_Pipe.
        This is needed because ecore_timer should not be called in a child thread,
        but in the main thread.

        Reviewed by Antonio Gomes.

        * wtf/efl/MainThreadEfl.cpp:
        (WTF::pipeObject):
        (WTF::monitorDispatchFunctions):
        (WTF::initializeMainThreadPlatform):
        (WTF::scheduleDispatchFunctionsOnMainThread):

2011-07-17  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT operationCompareEqual does not inline JSValue::equalSlowCaseInline.
        https://bugs.webkit.org/show_bug.cgi?id=64637

        Reviewed by Gavin Barraclough.

        * dfg/DFGOperations.cpp:

2011-07-16  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64657
        Converted this value not preserved when accessed via direct eval.

        Reviewed by Oliver Hunt.

        Upon entry into a non-strict function, primitive this values should be boxed as Object types
        (or substituted with the global object) - which is done by op_convert_this. However we only
        do so where this is used lexically within the function (we omit the conversion op if not).
        The problem comes if a direct eval (running within the function's scope) accesses the this
        value.

        We are safe in the case of a single eval, since the this object will be converted within
        callEval, however the converted value is not preserved, and a new wrapper object is allocated
        each time eval is invoked. This is inefficient and incorrect, since any changes to the wrapper
        object will be lost between eval statements.

        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
            - If a function uses eval, we always need to convert this.
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):
            - Don't convert primitive values here - this is too late!
        (JSC::Interpreter::privateExecute):
            - Changed op_convert_this to call new isPrimitive method.
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
            - Changed op_convert_this to call new isPrimitive method.
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::isPrimitive):
            - Added JSValue::isPrimitive.
        * runtime/JSValue.h:
            - Added JSValue::isPrimitive.

2011-07-16  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT compare/branch code emits is-integer tests even when a value is
        definitely not an integer.
        https://bugs.webkit.org/show_bug.cgi?id=64654

        Reviewed by Gavin Barraclough.
        
        Added the isKnownNotInteger() method, which returns true if a node is
        definitely not an integer and will always fail any is-integer test.  Then
        modified the compare and branch code to use this method; if it returns
        true then is-int tests are omitted and the compiler always emits a slow
        call.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isKnownNotInteger):
        (JSC::DFG::JITCodeGenerator::nonSpeculativePeepholeBranch):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeNonPeepholeCompare):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeCompare):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compare):

2011-07-16  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT has dead code for slow calls for branches.
        https://bugs.webkit.org/show_bug.cgi?id=64653

        Reviewed by Gavin Barraclough.
        
        Removed SpeculativeJIT::compilePeepHoleCall.

        * dfg/DFGSpeculativeJIT.cpp:
        * dfg/DFGSpeculativeJIT.h:

2011-07-15  Mark Rowe  <mrowe@apple.com>

        Fix the build.

        * dfg/DFGGraph.h:

2011-07-15  Gavin Barraclough  <barraclough@apple.com>

        NativeError.prototype objects have [[Class]] of "Object" but should be "Error"
        https://bugs.webkit.org/show_bug.cgi?id=55346

        Reviewed by Sam Weinig.

        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
            - Switch to putDirect since we're not the only ones tranitioning this Structure now.
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        * runtime/NativeErrorPrototype.h:
            - Switch base class to ErrorPrototype.

2011-07-15  Gavin Barraclough  <barraclough@apple.com>

        DFG JIT - Where arguments passed are integers, speculate this.
        https://bugs.webkit.org/show_bug.cgi?id=64630

        Reviewed by Sam Weinig.

        Presently the DFG JIT is overly aggressively predicting double.
        Use a bit of dynamic information, and curtail this a little.

        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::predictArgumentTypes):
            - Check for integer arguments.
        * dfg/DFGGraph.h:
            - Function declaration.
        * runtime/Executable.cpp:
        (JSC::tryDFGCompile):
        (JSC::FunctionExecutable::compileForCallInternal):
            - Add call to predictArgumentTypes.

2011-07-15  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT is inconsistent about fusing branches and speculating
        integer comparisons for branches.
        https://bugs.webkit.org/show_bug.cgi?id=64573

        Reviewed by Gavin Barraclough.
        
        This patch moves some of NonSpeculativeJIT's functionality up into the
        JITCodeGenerator superclass so that it can be used from both JITs.  Now,
        in cases where the speculative JIT doesn't want to speculate but still
        wants to emit good code, it can reliably emit the same code sequence as
        the non-speculative JIT.  This patch also extends the non-speculative
        JIT's compare optimizations to include compare/branch fusing, and
        extends the speculative JIT's compare optimizations to cover StrictEqual.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::isKnownInteger):
        (JSC::DFG::JITCodeGenerator::isKnownNumeric):
        (JSC::DFG::JITCodeGenerator::nonSpeculativePeepholeBranch):
        (JSC::DFG::JITCodeGenerator::nonSpeculativeCompare):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::detectPeepHoleBranch):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        * dfg/DFGOperations.cpp:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compare):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        * wtf/Platform.h:

2011-07-14  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64250
        Global strict mode function leaking global object as "this".

        Reviewed by Oliver Hunt.

        The root problem here is that we pass the wrong values into
        calls, and then try to fix them up in the callee. Correct
        behaviour per the spec is to pass in the value undefined,
        as this unless either (1) the function call is based on an
        explicit property access or (2) the base of the call comes
        directly from a 'with'.

        This change does away with the need for this conversion of
        objects (non strict code should only box primitives), and
        does away with all this conversion for strict functions.

        This patch may have web compatibility ramifications, and may
        require some advocacy.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * bytecode/Opcode.h:
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
        (JSC::BytecodeGenerator::emitResolveWithThis):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * bytecompiler/BytecodeGenerator.h:
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * bytecompiler/NodesCodegen.cpp:
        (JSC::EvalFunctionCallNode::emitBytecode):
        (JSC::FunctionCallResolveNode::emitBytecode):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
            - Change NeedsThisConversion check to test for JSString's vptr
              (objects no longer need conversion).
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::resolveThisAndProperty):
            - Based on resolveBaseAndProperty, but produce correct this value.
        (JSC::Interpreter::privateExecute):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * interpreter/Interpreter.h:
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompileSlowCases):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * jit/JIT.h:
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_resolve_with_this):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        (JSC::JIT::emit_op_convert_this):
        (JSC::JIT::emitSlow_op_convert_this):
            - Change NeedsThisConversion check to test for JSString's vptr
              (objects no longer need conversion).
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_resolve_with_this):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        (JSC::JIT::emit_op_convert_this):
        (JSC::JIT::emitSlow_op_convert_this):
            - Change NeedsThisConversion check to test for JSString's vptr
              (objects no longer need conversion).
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * jit/JITStubs.h:
            - Removed op_convert_this_strict, added op_resolve_with_this.
        * runtime/JSActivation.h:
            - removed NeedsThisConversion flag, added IsEnvironmentRecord.
        * runtime/JSStaticScopeObject.h:
            - removed NeedsThisConversion flag, added IsEnvironmentRecord.
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
            - removed NeedsThisConversion.
        * runtime/JSTypeInfo.h:
        (JSC::TypeInfo::isEnvironmentRecord):
        (JSC::TypeInfo::overridesHasInstance):
            - removed NeedsThisConversion flag, added IsEnvironmentRecord.
        * runtime/JSValue.h:
            - removed NeedsThisConversion.
        * runtime/JSVariableObject.h:
            - Corrected StructureFlags inheritance.
        * runtime/StrictEvalActivation.h:
        (JSC::StrictEvalActivation::createStructure):
            - Added IsEnvironmentRecord to StructureFlags, addded createStructure.
        * runtime/Structure.h:
            - removed NeedsThisConversion.
        * tests/mozilla/ecma/String/15.5.4.6-2.js:
        (getTestCases):
            - Removed invalid test case.

2011-07-15  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r91082, r91087, and r91089.
        http://trac.webkit.org/changeset/91082
        http://trac.webkit.org/changeset/91087
        http://trac.webkit.org/changeset/91089
        https://bugs.webkit.org/show_bug.cgi?id=64616

        gtk tests are failing a lot after this change. (Requested by
        dave_levin on #webkit).

        * wtf/ThreadIdentifierDataPthreads.cpp:
        (WTF::ThreadIdentifierData::identifier):
        (WTF::ThreadIdentifierData::initialize):
        (WTF::ThreadIdentifierData::initializeKeyOnceHelper):
        (WTF::ThreadIdentifierData::initializeKeyOnce):
        * wtf/ThreadIdentifierDataPthreads.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading):

2011-07-15  David Levin  <levin@chromium.org>

        Another attempted build fix.

        * wtf/ThreadIdentifierDataPthreads.cpp: Add include to pick
        up the definition of PTHREAD_KEYS_MAX.

2011-07-15  David Levin  <levin@chromium.org>

        Chromium build fix.

        * wtf/ThreadIdentifierDataPthreads.cpp: Add include to pick
        up the definition of PTHREAD_KEYS_MAX.

2011-07-14  David Levin  <levin@chromium.org>

        currentThread is too slow!
        https://bugs.webkit.org/show_bug.cgi?id=64577

        Reviewed by Darin Adler and Dmitry Titov.

        The problem is that currentThread results in a pthread_once call which always takes a lock.
        With this change, currentThread is 10% faster than isMainThread in release mode and only
        5% slower than isMainThread in debug.

        * wtf/ThreadIdentifierDataPthreads.cpp:
        (WTF::ThreadIdentifierData::initializeOnce): Remove the pthread once stuff
        which is no longer needed because this is called from initializeThreading().
        (WTF::ThreadIdentifierData::identifier): Remove the initializeKeyOnce call because
        intialization of the pthread key should already be done.
        (WTF::ThreadIdentifierData::initialize): Ditto.
        * wtf/ThreadIdentifierDataPthreads.h:
        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeThreading): Acquire the pthread key here.

2011-07-14  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not optimize Branch as well as it could.
        https://bugs.webkit.org/show_bug.cgi?id=64574

        Reviewed by Gavin Barraclough.
        
        This creates a common code path for emitting unfused branches, which does
        no speculation, and only performs a slow call if absolutely necessary.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitBranch):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-14  Filip Pizlo  <fpizlo@apple.com>

        GC allocation fast path has too many operations.
        https://bugs.webkit.org/show_bug.cgi?id=64493

        Reviewed by Darin Adler.
        
        Changed the timing of the lazy sweep so that it occurs when we land on
        a previously-unsweeped block, rather than whenever we land on an unsweeped
        cell.  After the per-block lazy sweep occurs, the block is turned into a
        singly linked list of free cells.  The allocation fast path is now just a
        load-branch-store to remove a cell from the head of the list.
        
        Additionally, this changes the way new blocks are allocated.  Previously,
        they would be populated with dummy cells.  With this patch, they are
        turned into a free list, which means that there will never be destructor
        calls for allocations in fresh blocks.
        
        These changes result in a 1.9% speed-up on V8, and a 0.6% speed-up on
        SunSpider.  There are no observed statistically significant slow-downs
        on any individual benchmark.

        * JavaScriptCore.exp:
        * heap/Heap.cpp:
        (JSC::Heap::allocateSlowCase):
        (JSC::Heap::collect):
        (JSC::Heap::canonicalizeBlocks):
        (JSC::Heap::resetAllocator):
        * heap/Heap.h:
        (JSC::Heap::forEachProtectedCell):
        (JSC::Heap::forEachCell):
        (JSC::Heap::forEachBlock):
        (JSC::Heap::allocate):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        (JSC::MarkedBlock::lazySweep):
        (JSC::MarkedBlock::blessNewBlockForFastPath):
        (JSC::MarkedBlock::blessNewBlockForSlowPath):
        (JSC::MarkedBlock::canonicalizeBlock):
        * heap/MarkedBlock.h:
        * heap/NewSpace.cpp:
        (JSC::NewSpace::addBlock):
        (JSC::NewSpace::canonicalizeBlocks):
        * heap/NewSpace.h:
        (JSC::NewSpace::allocate):
        (JSC::NewSpace::SizeClass::SizeClass):
        (JSC::NewSpace::SizeClass::canonicalizeBlock):
        * heap/OldSpace.cpp:
        (JSC::OldSpace::addBlock):

2011-07-14  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT crashes on host constructor calls in debug mode.
        https://bugs.webkit.org/show_bug.cgi?id=64562
        
        Reviewed by Gavin Barraclough.
        
        Fixed the relevant ASSERT.

        * dfg/DFGOperations.cpp:

2011-07-14  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT contains a FIXME for rewinding speculative code generation that
        has already been fixed.
        https://bugs.webkit.org/show_bug.cgi?id=64022

        Reviewed by Gavin Barraclough.

        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::terminateSpeculativeExecution):

2011-07-14  Ryuan Choi  <ryuan.choi@samsung.com>

        [EFL] Add OwnPtr specialization for Ecore_Pipe.
        https://bugs.webkit.org/show_bug.cgi?id=64515

        Add an overload for deleteOwnedPtr(Ecore_Pipe*) on EFL port.

        Reviewed by Xan Lopez.

        * wtf/OwnPtrCommon.h:
        * wtf/efl/OwnPtrEfl.cpp:
        (WTF::deleteOwnedPtr):

2011-07-14  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT unnecessarily boxes and unboxes values during silent spilling.
        https://bugs.webkit.org/show_bug.cgi?id=64068

        Reviewed by Gavin Barraclough.
        
        Silent spilling and filling of registers is done during slow-path C
        function calls.  The silent spill/fill logic does not affect register
        allocation on paths that don't involve the C function call.
        
        This changes the silent spilling code to spill in unboxed form.  The
        silent fill will refill in whatever form the register was spilled in.
        For example, the silent spill code may choose not to spill the register
        because it was already spilled previously, which would imply that it
        was spilled in boxed form.  The filling code detects this and either
        unboxes, or not, depending on what is appropriate.
        
        This change also results in a simplification of the silent spill/fill
        API: silent spilling no longer needs to know about the set of registers
        that cannot be trampled, since it never does boxing and hence does not
        need a temporary register.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedGetById):
        (JSC::DFG::JITCodeGenerator::cachedPutById):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::silentSpillGPR):
        (JSC::DFG::JITCodeGenerator::silentSpillFPR):
        (JSC::DFG::JITCodeGenerator::silentFillFPR):
        (JSC::DFG::JITCodeGenerator::silentSpillAllRegisters):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::valueToNumber):
        (JSC::DFG::NonSpeculativeJIT::valueToInt32):
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        (JSC::DFG::NonSpeculativeJIT::compare):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-13  Michael Saboff  <msaboff@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64202
        Enh: Improve handling of RegExp in the form of /.*blah.*/

        Reviewed by Gavin Barraclough.

        Added code to both the Yarr interpreter and JIT to handle
        these expressions a little differently.  First off, the terms
        in between the leading and trailing .*'s cannot capture and
        also this enhancement is limited to single alternative expressions.
        If an expression is of the right form with the aforementioned
        restrictions, we process the inner terms and then look for the
        beginning of the string and end of the string.  There is handling 
        for multiline expressions to allow the beginning and end to be 
        right after and right before newlines.

        This enhancement speeds up expressions of this type 12x on
        a MacBookPro.

        Cleaned up 'case' statement indentation.

        A new set of tests was added as LayoutTests/fast/regex/dotstar.html

        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::Interpreter::InputStream::end):
        (JSC::Yarr::Interpreter::matchDotStarEnclosure):
        (JSC::Yarr::Interpreter::matchDisjunction):
        (JSC::Yarr::ByteCompiler::assertionDotStarEnclosure):
        (JSC::Yarr::ByteCompiler::emitDisjunction):
        * yarr/YarrInterpreter.h:
        (JSC::Yarr::ByteTerm::DotStarEnclosure):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::generateDotStarEnclosure):
        (JSC::Yarr::YarrGenerator::backtrackDotStarEnclosure):
        (JSC::Yarr::YarrGenerator::generateTerm):
        (JSC::Yarr::YarrGenerator::backtrackTerm):
        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPatternConstructor::setupAlternativeOffsets):
        (JSC::Yarr::YarrPatternConstructor::containsCapturingTerms):
        (JSC::Yarr::YarrPatternConstructor::optimizeDotStarWrappedExpressions):
        (JSC::Yarr::YarrPattern::compile):
        * yarr/YarrPattern.h:
        (JSC::Yarr::PatternTerm::PatternTerm):

2011-07-13  Xan Lopez  <xlopez@igalia.com>

        [GTK] Fix distcheck

        Reviewed by Martin Robinson.

        * GNUmakefile.list.am: add missing files.

2011-07-13  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not implement prototype chain or list caching for get_by_id.
        https://bugs.webkit.org/show_bug.cgi?id=64147

        Reviewed by Gavin Barraclough.
        
        This implements unified support for prototype caching, prototype chain
        caching, and polymorphic (i.e. list) prototype and prototype chain
        caching.  This is done by creating common code for emitting prototype
        or chain access stubs, and having it factored out into
        generateProtoChainAccessStub().  This function is called by
        tryCacheGetByID once the latter determines that some form of prototype
        access caching is necessary (i.e. the slot being accessed is not on the
        base value but on some other object).
        
        Direct prototype list, and prototype chain list, caching is implemented by
        linking the slow path to operationGetByIdProtoBuildList(), which uses the
        same helper function (generateProtoChainAccessStub()) as tryCacheGetByID.
        
        This change required ensuring that the value in the scratchGPR field in
        StructureStubInfo is preserved even after the stub info is in the
        chain, or proto_list, states.  Hence scratchGPR was moved out of the union
        and into the top-level of StructureStubInfo.
        
        * bytecode/StructureStubInfo.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::emitRestoreScratch):
        (JSC::DFG::linkRestoreScratch):
        (JSC::DFG::generateProtoChainAccessStub):
        (JSC::DFG::tryCacheGetByID):
        (JSC::DFG::tryBuildGetByIDProtoList):
        (JSC::DFG::dfgBuildGetByIDProtoList):
        (JSC::DFG::tryCachePutByID):
        * dfg/DFGRepatch.h:

2011-07-12  Brent Fulgham  <bfulgham@webkit.org>

        Standardize WinCairo conditionalized code under PLATFORM macro.
        https://bugs.webkit.org/show_bug.cgi?id=64377

        Reviewed by Maciej Stachowiak.

        * wtf/Platform.h: Update to use PLATFORM(WIN_CAIRO) for tests.

2011-07-13  David Levin  <levin@chromium.org>

        Possible race condition in ThreadIdentifierData::initializeKeyOnce and shouldCallRealDebugger.
        https://bugs.webkit.org/show_bug.cgi?id=64465

        Reviewed by Dmitry Titov.

        There isn't a good way to test this as it is very highly unlikely to occur.

        * wtf/ThreadIdentifierDataPthreads.cpp:
        (WTF::ThreadIdentifierData::initializeKeyOnce): Since scoped static initialization
        isn't thread-safe, change the initialization to be global.

2011-07-12  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64424
        Our direct eval behaviour deviates slightly from the spec.

        Reviewed by Oliver Hunt.

        The ES5 spec defines a concept of 'Direct Call to Eval' (see section 15.1.2.1.1), where
        behaviour will differ from that of an indirect call (e.g. " { eval: window.eval }.eval();"
        or "var a = eval; a();" are indirect calls), particularly in non-strict scopes variables
        may be introduced into the caller's environment.

        ES5 direct calls are any call where the callee function is provided by a reference, a base
        of that Reference is an EnvironmentRecord (this corresponds to all productions
        "PrimaryExpression: Identifier", see 10.2.2.1 GetIdentifierReference), and where the name
        of the reference is "eval". This means any expression of the form "eval(...)", and that
        calls the standard built in eval method from on the Global Object, is considered to be
        direct.

        In JavaScriptCore we are currently overly restrictive. We also check that the
        EnvironmentRecord that is the base of the reference is the Declaractive Environment Record
        at the root of the scope chain, corresponding to the Global Object - an "eval(..)" statement
        that hits a var eval in a nested scope is not considered to be direct. This behaviour does
        not emanate from the spec, and is incorrect.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
            - Fixed direct eval check in op_call_eval.
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
            - Fixed direct eval check in op_call_eval.
        * runtime/Executable.h:
        (JSC::isHostFunction):
            - Added check for host function with specific NativeFunction.

2011-07-13  Ademar de Souza Reis Jr.  <ademar.reis@openbossa.org>

        Reviewed by Andreas Kling.

        Broken build on QNX
        https://bugs.webkit.org/show_bug.cgi?id=63717

        QNX doesn't support pthread's SA_RESTART (required by
        JSC_MULTIPLE_THREADS), JIT is broken at runtime and there a
        few minor compilation errors here and there.

        Original patch by Ritt Konstantin <ritt.ks@gmail.com>, also
        tested by him on QNX v6.5 (x86)

        * wtf/DateMath.cpp: fix usage of abs/labs
        * wtf/Platform.h: Disable JIT and JSC_MULTIPLE_THREADS
        * wtf/StackBounds.cpp: Add a couple of missing includes (and sort them)

2011-07-12  Anders Carlsson  <andersca@apple.com>

        If a compiler has nullptr support, include <cstddef> to get the nullptr_t definition
        https://bugs.webkit.org/show_bug.cgi?id=64429

        Include the cstddef which has the nullptr_t typedef according to the C++0x standard.

        * wtf/NullPtr.h:

2011-07-13  MORITA Hajime  <morrita@google.com>

        Refactoring: Ignored ExceptionCode value should be less annoying.
        https://bugs.webkit.org/show_bug.cgi?id=63688

        Added ASSERT_AT macro.

        Reviewed by Darin Adler.

        * wtf/Assertions.h:

2011-07-12  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not implement op_construct.
        https://bugs.webkit.org/show_bug.cgi?id=64066

        Reviewed by Gavin Barraclough.
        
        This is a fixed implementation of op_construct.  Constructor calls are implemented
        by reusing almost all of the code for Call, with care taken to make sure that
        where the are differences (like selecting different code blocks), those differences
        are respected.  The two fixes over the last patch are: (1) make sure the
        CodeBlock::unlinkCalls respects differences between Call and Construct, and (2)
        make sure that virtualFor() in DFGOperations respects the CodeSpecializationKind
        (either CodeForCall or CodeForConstruct) when invoking the compiler.

        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::recordConstruct):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::addCall):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgLinkFor):
        * dfg/DFGRepatch.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * runtime/CodeBlock.cpp:
        (JSC::CodeBlock::unlinkCalls):

2011-07-12  Oliver Hunt  <oliver@apple.com>

        Overzealous type validation in method_check
        https://bugs.webkit.org/show_bug.cgi?id=64415

        Reviewed by Gavin Barraclough.

        method_check is essentially just a value look up
        optimisation, but it internally stores the value
        as a JSFunction, even though it never relies on
        this fact.  Under GC validation however we end up
        trying to enforce that assumption.  The fix is
        simply to store the value as a correct supertype.

        * bytecode/CodeBlock.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgRepatchGetMethodFast):
        (JSC::DFG::tryCacheGetMethod):
        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::patchMethodCallProto):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):

2011-07-12  Filip Pizlo  <fpizlo@apple.com>

        COLLECT_ON_EVERY_ALLOCATION no longer works.
        https://bugs.webkit.org/show_bug.cgi?id=64388

        Reviewed by Oliver Hunt.
        
        Added a flag to Heap that determines if it's safe to collect (which for now means that
        JSGlobalObject has actually been initialized, but it should work for other things, too).
        This allows JSGlobalObject to allocate even if the allocator wants to GC; instead of
        GCing it just grows the heap, if necessary.
        
        Then changed Heap::allocate() to not recurse ad infinitum when
        COLLECT_ON_EVERY_ALLOCATION is set.  This also makes the allocator generally more
        resilient against bugs; this change allowed me to put in handy assertions, such as that
        an allocation must succeed after either a collection or after a new block was added.

        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::tryAllocate):
        (JSC::Heap::allocate):
        (JSC::Heap::collectAllGarbage):
        (JSC::Heap::collect):
        * heap/Heap.h:
        (JSC::Heap::notifyIsSafeToCollect):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):

2011-07-12  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT put_by_id transition caching does not inform the GC about the structure and
        prototype chain that it is referencing.
        https://bugs.webkit.org/show_bug.cgi?id=64387

        Reviewed by Gavin Barraclough.
        
        Fixed the relevant code in DFGRepatch to call StructureStubInfo::initPutByIdTransition().

        * dfg/DFGRepatch.cpp:
        (JSC::DFG::tryCachePutByID):

2011-07-12  Adam Roben  <aroben@apple.com>

        Ensure no intermediate WTF::Strings are created when concatenating with string literals

        Fixes <http://webkit.org/b/63330> Concatenating string literals and WTF::Strings using
        operator+ is suboptimal

        Reviewed by Darin Adler.

        * wtf/text/StringConcatenate.h:
        (WTF::StringTypeAdapter<String>::writeTo): Added a macro that can be used for testing how
        many WTF::Strings get copied while evaluating an operator+ expression.

        * wtf/text/StringOperators.h:
        (WTF::operator+): Changed the overload that takes a StringAppend to take it on the left-hand
        side, since operator+ is left-associative. Having the StringAppend on the right-hand side
        was causing us to make intermediate WTF::Strings when evaluating expressions that contained
        multiple calls to operator+. Added some more overloads for that take a left-hand side of
        const char* to resolve overload ambiguity for certain expressions. Added overloads that take
        a left-hand side of const UChar* (matching the const char* overloads) so that wide string
        literals don't first have to be converted to a WTF::String in operator+ expressions.

2011-07-12  Adam Roben  <aroben@apple.com>

        Unreviewed, rolling out r90811.
        http://trac.webkit.org/changeset/90811
        https://bugs.webkit.org/show_bug.cgi?id=61025

        Several svg tests failing assertions beneath
        SVGSMILElement::findInstanceTime

        * wtf/StdLibExtras.h:
        (WTF::binarySearch):

2011-07-12  Oliver Varga  <Varga.Oliver@stud.u-szeged.hu>

        Reviewed by Nikolas Zimmermann.

        Speed up SVGSMILElement::findInstanceTime.
        https://bugs.webkit.org/show_bug.cgi?id=61025

        Add a new parameter to StdlibExtras.h::binarySerarch function
        to also handle cases when the array does not contain the key value.
        This is needed for an svg function.

        * wtf/StdLibExtras.h:
        (WTF::binarySearch):

2011-07-11  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT does not guard itself against floating point speculation
        failures on non-floating-point constants.
        https://bugs.webkit.org/show_bug.cgi?id=64330

        Reviewed by Gavin Barraclough.
        
        Made fillSpeculateDouble immediate invoke terminateSpeculativeExecution() as
        soon as it notices that it's speculating on something that is a non-numeric
        JSConstant.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):

2011-07-11  Filip Pizlo  <fpizlo@apple.com>

        DFG Speculative JIT does not always insert speculation checks when speculating
        arrays.
        https://bugs.webkit.org/show_bug.cgi?id=64254

        Reviewed by Gavin Barraclough.
        
        Changed the SetLocal instruction to always validate that the value being stored
        into the local variable is an array, if that variable was marked PredictArray.
        This is necessary since uses of arrays assume that if a PredictArray value is
        in a local variable then the speculation check validating that the value is an
        array was already performed.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-11  Gabor Loki  <loki@webkit.org>

        Fix the condition of the optimized code in doubleTransfer
        https://bugs.webkit.org/show_bug.cgi?id=64261

        Reviewed by Zoltan Herczeg.

        The condition of the optimized code in doubleTransfer is wrong. The
        data transfer should be executed with four bytes aligned address.
        VFP cannot perform unaligned memory access.

        Reported by Jacob Bramley.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::doubleTransfer):

2011-07-11  Gabor Loki  <loki@webkit.org>

        Signed arithmetic bug in dataTransfer32.
        https://bugs.webkit.org/show_bug.cgi?id=64257

        Reviewed by Zoltan Herczeg.

        An arithmetic bug is fixed. If the offset of dataTransfer is half of the
        addressable memory space on a 32-bit machine (-2147483648 = 0x80000000)
        a load instruction is emitted with a wrong zero offset.

        Inspired by Jacob Bramley's patch from JaegerMonkey.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::dataTransfer32):

2011-07-09  Thouraya Andolsi  <thouraya.andolsi@st.com>

        Fix unaligned userspace access for SH4 platforms. 
        https://bugs.webkit.org/show_bug.cgi?id=62993

        * wtf/Platform.h:

2011-07-09  Chao-ying Fu  <fu@mips.com>

        Fix MIPS build due to readInt32 and readPointer
        https://bugs.webkit.org/show_bug.cgi?id=63962

        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::readInt32):
        (JSC::MIPSAssembler::readPointer):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::rshift32):

2011-07-08  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=64181
        REGRESSION (r90602): Gmail doesn't load

        Rolling out r90601, r90602.

        * dfg/DFGAliasTracker.h:
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::addVarArgChild):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::tryCacheGetByID):
        (JSC::DFG::dfgLinkCall):
        * dfg/DFGRepatch.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * runtime/JSObject.h:
        (JSC::JSObject::isUsingInlineStorage):

2011-07-08  Kalev Lember  <kalev@smartlink.ee>

        Reviewed by Adam Roben.

        Add missing _WIN32_WINNT and WINVER definitions
        https://bugs.webkit.org/show_bug.cgi?id=59702

        Moved _WIN32_WINNT and WINVER definitions to config.h so that they are
        available for all source files.

        In particular, wtf/FastMalloc.cpp uses CreateTimerQueueTimer and
        DeleteTimerQueueTimer which are both guarded by
        #if (_WIN32_WINNT >= 0x0500)
        in MinGW headers.

        * config.h:
        * wtf/Assertions.cpp:

2011-07-08  Chang Shu  <cshu@webkit.org>

        Rename "makeSecure" to "fill" and remove the support for displaying last character
        to avoid layering violatation.
        https://bugs.webkit.org/show_bug.cgi?id=59114

        Reviewed by Alexey Proskuryakov.

        * JavaScriptCore.exp:
        * JavaScriptCore.order:
        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::fill):
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.h:
        (WTF::String::fill):

2011-07-08  Benjamin Poulain  <benjamin@webkit.org>

        [WK2] Do not forward touch events to the web process when it does not need them
        https://bugs.webkit.org/show_bug.cgi?id=64164

        Reviewed by Kenneth Rohde Christiansen.

        Add a convenience function to obtain a reference to the last element of a Deque.

        * wtf/Deque.h:
        (WTF::Deque::last):

2011-07-07  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not implement op_construct.
        https://bugs.webkit.org/show_bug.cgi?id=64066

        Reviewed by Gavin Barraclough.

        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::recordConstruct):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::addCall):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgLinkFor):
        * dfg/DFGRepatch.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-07  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not implement get_by_id prototype caching.
        https://bugs.webkit.org/show_bug.cgi?id=64077

        Reviewed by Gavin Barraclough.

        * dfg/DFGRepatch.cpp:
        (JSC::DFG::emitRestoreScratch):
        (JSC::DFG::linkRestoreScratch):
        (JSC::DFG::tryCacheGetByID):
        * runtime/JSObject.h:
        (JSC::JSObject::addressOfPropertyAtOffset):

2011-07-07  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT method_check implementation does not link to optimized get_by_id
        slow path.
        https://bugs.webkit.org/show_bug.cgi?id=64073

        Reviewed by Gavin Barraclough.

        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgRepatchGetMethodFast):

2011-07-07  Oliver Hunt  <oliver@apple.com>

        Encode jump and link sizes into the appropriate enums
        https://bugs.webkit.org/show_bug.cgi?id=64123

        Reviewed by Sam Weinig.

        Finally kill off the out of line jump and link size arrays, 
        so we can avoid icky loads and constant fold the linking arithmetic.

        * assembler/ARMv7Assembler.cpp:
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::jumpSizeDelta):
        (JSC::ARMv7Assembler::computeJumpType):

2011-07-06  Juan C. Montemayor  <jmont@apple.com>

        ASSERT_NOT_REACHED running test 262
        https://bugs.webkit.org/show_bug.cgi?id=63951
        
        Added a case to the switch statement where the code was failing. Fixed
        some logic as well that gave faulty error messages.

        Reviewed by Gavin Barraclough.

        * parser/JSParser.cpp:
        (JSC::JSParser::getTokenName):
        (JSC::JSParser::updateErrorMessageSpecialCase):
        (JSC::JSParser::updateErrorMessage):

2011-07-06  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT implementation of op_call results in regressions on sunspider
        controlflow-recursive.
        https://bugs.webkit.org/show_bug.cgi?id=64039

        Reviewed by Gavin Barraclough.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::isSmallInt32Constant):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isInteger):

2011-07-06  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not support method_check
        https://bugs.webkit.org/show_bug.cgi?id=63972

        Reviewed by Gavin Barraclough.

        * assembler/CodeLocation.h:
        (JSC::CodeLocationPossiblyNearCall::CodeLocationPossiblyNearCall):
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):
        * bytecode/CodeBlock.h:
        (JSC::MethodCallLinkInfo::MethodCallLinkInfo):
        (JSC::MethodCallLinkInfo::seenOnce):
        (JSC::MethodCallLinkInfo::setSeen):
        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::recordGetMethod):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedGetById):
        (JSC::DFG::JITCodeGenerator::cachedGetMethod):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::addMethodGet):
        (JSC::DFG::JITCompiler::MethodGetRecord::MethodGetRecord):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::hasIdentifier):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgRepatchGetMethodFast):
        (JSC::DFG::tryCacheGetMethod):
        (JSC::DFG::dfgRepatchGetMethod):
        * dfg/DFGRepatch.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JITWriteBarrier.h:
        (JSC::JITWriteBarrier::set):

2011-07-06  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT op_call implementation will flush registers even when those registers are dead
        https://bugs.webkit.org/show_bug.cgi?id=64023

        Reviewed by Gavin Barraclough.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::emitCall):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::integerResult):
        (JSC::DFG::JITCodeGenerator::noResult):
        (JSC::DFG::JITCodeGenerator::cellResult):
        (JSC::DFG::JITCodeGenerator::jsValueResult):
        (JSC::DFG::JITCodeGenerator::doubleResult):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-06  Filip Pizlo  <fpizlo@apple.com>

        DFG speculative JIT may crash when speculating int on a non-int JSConstant.
        https://bugs.webkit.org/show_bug.cgi?id=64017

        Reviewed by Gavin Barraclough.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-06  Dmitriy Vyukov  <dvyukov@google.com>

        Reviewed by David Levin.

        Allow substitution of dynamic annotations and prevent identical code folding by the linker.
        https://bugs.webkit.org/show_bug.cgi?id=62443

        * wtf/DynamicAnnotations.cpp:
        (WTFAnnotateBenignRaceSized):
        (WTFAnnotateHappensBefore):
        (WTFAnnotateHappensAfter):

2011-07-06  Zoltan Herczeg  <zherczeg@inf.u-szeged.hu>

        Calls on 32 bit machines are failed after r90423
        https://bugs.webkit.org/show_bug.cgi?id=63980

        Reviewed by Gavin Barraclough.

        Copy the necessary lines from JITCall.cpp.

        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCall):

2011-07-05  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT virtual call implementation is inefficient.
        https://bugs.webkit.org/show_bug.cgi?id=63974

        Reviewed by Gavin Barraclough.

        * dfg/DFGOperations.cpp:
        * runtime/Executable.h:
        (JSC::ExecutableBase::generatedJITCodeForCallWithArityCheck):
        (JSC::ExecutableBase::generatedJITCodeForConstructWithArityCheck):
        (JSC::ExecutableBase::generatedJITCodeWithArityCheckFor):
        (JSC::ExecutableBase::hasJITCodeForCall):
        (JSC::ExecutableBase::hasJITCodeForConstruct):
        (JSC::ExecutableBase::hasJITCodeFor):
        * runtime/JSFunction.h:
        (JSC::JSFunction::scopeUnchecked):

2011-07-05  Oliver Hunt  <oliver@apple.com>

        Force inlining of simple functions that show up as not being inlined
        https://bugs.webkit.org/show_bug.cgi?id=63964

        Reviewed by Gavin Barraclough.

        Looking at profile data indicates the gcc is failing to inline a
        number of trivial functions.  This patch hits the ones that show
        up in profiles with the ALWAYS_INLINE hammer.

        We also replace the memcpy() call in linking with a manual loop.
        Apparently memcpy() is almost never faster than an inlined loop.

        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::add):
        (JSC::ARMv7Assembler::add_S):
        (JSC::ARMv7Assembler::ARM_and):
        (JSC::ARMv7Assembler::asr):
        (JSC::ARMv7Assembler::b):
        (JSC::ARMv7Assembler::blx):
        (JSC::ARMv7Assembler::bx):
        (JSC::ARMv7Assembler::clz):
        (JSC::ARMv7Assembler::cmn):
        (JSC::ARMv7Assembler::cmp):
        (JSC::ARMv7Assembler::eor):
        (JSC::ARMv7Assembler::it):
        (JSC::ARMv7Assembler::ldr):
        (JSC::ARMv7Assembler::ldrCompact):
        (JSC::ARMv7Assembler::ldrh):
        (JSC::ARMv7Assembler::ldrb):
        (JSC::ARMv7Assembler::lsl):
        (JSC::ARMv7Assembler::lsr):
        (JSC::ARMv7Assembler::movT3):
        (JSC::ARMv7Assembler::mov):
        (JSC::ARMv7Assembler::movt):
        (JSC::ARMv7Assembler::mvn):
        (JSC::ARMv7Assembler::neg):
        (JSC::ARMv7Assembler::orr):
        (JSC::ARMv7Assembler::orr_S):
        (JSC::ARMv7Assembler::ror):
        (JSC::ARMv7Assembler::smull):
        (JSC::ARMv7Assembler::str):
        (JSC::ARMv7Assembler::sub):
        (JSC::ARMv7Assembler::sub_S):
        (JSC::ARMv7Assembler::tst):
        (JSC::ARMv7Assembler::linkRecordSourceComparator):
        (JSC::ARMv7Assembler::link):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp5Reg3Imm8):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp5Imm5Reg3Reg3):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp7Reg3Reg3Reg3):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp8Imm8):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp8RegReg143):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp9Imm7):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::oneWordOp10Reg3Reg3):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::twoWordOp12Reg4FourFours):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::twoWordOp16FourFours):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::twoWordOp16Op16):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::twoWordOp5i6Imm4Reg4EncodedImm):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::twoWordOp12Reg4Reg4Imm12):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::vfpOp):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::vfpMemOp):
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::linkCode):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::nearCall):
        (JSC::MacroAssemblerARMv7::call):
        (JSC::MacroAssemblerARMv7::ret):
        (JSC::MacroAssemblerARMv7::moveWithPatch):
        (JSC::MacroAssemblerARMv7::branchPtrWithPatch):
        (JSC::MacroAssemblerARMv7::storePtrWithPatch):
        (JSC::MacroAssemblerARMv7::tailRecursiveCall):
        (JSC::MacroAssemblerARMv7::makeTailRecursiveCall):
        (JSC::MacroAssemblerARMv7::jump):
        (JSC::MacroAssemblerARMv7::makeBranch):

2011-07-05  Zoltan Herczeg  <zherczeg@inf.u-szeged.hu>

        Make "Add optimised paths for a few maths functions" work on Qt
        https://bugs.webkit.org/show_bug.cgi?id=63893

        Reviewed by Oliver Hunt.

        Move the generated code to the .text section instead of .data section.
        Fix alignment for the 32 bit thunk code.

        * jit/ThunkGenerators.cpp:

2011-07-05  Filip Pizlo  <fpizlo@apple.com>

        DFG JIT does not implement op_call.
        https://bugs.webkit.org/show_bug.cgi?id=63858

        Reviewed by Gavin Barraclough.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::unlinkCalls):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::setNumberOfCallLinkInfos):
        (JSC::CodeBlock::numberOfCallLinkInfos):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitCall):
        (JSC::BytecodeGenerator::emitConstruct):
        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::lookupGetByVal):
        (JSC::DFG::AliasTracker::recordCall):
        (JSC::DFG::AliasTracker::equalIgnoringLaterNumericConversion):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::getLocal):
        (JSC::DFG::ByteCodeParser::getArgument):
        (JSC::DFG::ByteCodeParser::toInt32):
        (JSC::DFG::ByteCodeParser::addToGraph):
        (JSC::DFG::ByteCodeParser::addVarArgChild):
        (JSC::DFG::ByteCodeParser::predictInt32):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::processPhiStack):
        (JSC::DFG::ByteCodeParser::allocateVirtualRegisters):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::opName):
        (JSC::DFG::Graph::dump):
        (JSC::DFG::Graph::refChildren):
        * dfg/DFGGraph.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::useChildren):
        (JSC::DFG::JITCodeGenerator::emitCall):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::addressOfCallData):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::CallRecord::CallRecord):
        (JSC::DFG::JITCompiler::notifyCall):
        (JSC::DFG::JITCompiler::appendCallWithFastExceptionCheck):
        (JSC::DFG::JITCompiler::addJSCall):
        (JSC::DFG::JITCompiler::PropertyAccessRecord::PropertyAccessRecord):
        (JSC::DFG::JITCompiler::JSCallRecord::JSCallRecord):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::Node):
        (JSC::DFG::Node::child1):
        (JSC::DFG::Node::child2):
        (JSC::DFG::Node::child3):
        (JSC::DFG::Node::firstChild):
        (JSC::DFG::Node::numChildren):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        (JSC::DFG::NonSpeculativeJIT::compare):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgLinkCall):
        * dfg/DFGRepatch.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compilePeepHoleIntegerBranch):
        (JSC::DFG::SpeculativeJIT::compilePeepHoleCall):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::detectPeepHoleBranch):
        * interpreter/CallFrame.h:
        (JSC::ExecState::calleeAsValue):
        * jit/JIT.cpp:
        (JSC::JIT::JIT):
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompileSlowCases):
        (JSC::JIT::privateCompile):
        (JSC::JIT::linkCall):
        (JSC::JIT::linkConstruct):
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCall):
        * jit/JITCode.h:
        (JSC::JITCode::JITCode):
        (JSC::JITCode::jitType):
        (JSC::JITCode::HostFunction):
        * runtime/JSFunction.h:
        * runtime/JSGlobalData.h:

2011-07-05  Oliver Hunt  <oliver@apple.com>

        Initialize new MarkStack member

        * heap/MarkStack.h:
        (JSC::MarkStack::MarkStack):

2011-07-05  Oliver Hunt  <oliver@apple.com>

        Don't throw out compiled code repeatedly
        https://bugs.webkit.org/show_bug.cgi?id=63960

        Reviewed by Gavin Barraclough.

        Stop throwing away all compiled code every time
        we're told to do a full GC.  Instead unlink all
        callsites during such GC passes to maximise the
        number of collectable functions, but otherwise
        leave compiled functions alone.

        * API/JSBase.cpp:
        (JSGarbageCollect):
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):
        * heap/Heap.cpp:
        (JSC::Heap::collectAllGarbage):
        * heap/MarkStack.h:
        (JSC::MarkStack::shouldUnlinkCalls):
        (JSC::MarkStack::setShouldUnlinkCalls):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::recompileAllJSFunctions):
        (JSC::JSGlobalData::releaseExecutableMemory):
        * runtime/RegExp.cpp:
        (JSC::RegExp::compile):
        (JSC::RegExp::invalidateCode):
        * runtime/RegExp.h:

2011-07-05  Filip Pizlo  <fpizlo@apple.com>

        JSC JIT has code duplication for the handling of call and construct
        https://bugs.webkit.org/show_bug.cgi?id=63957

        Reviewed by Gavin Barraclough.

        * jit/JIT.cpp:
        (JSC::JIT::linkFor):
        * jit/JIT.h:
        * jit/JITStubs.cpp:
        (JSC::jitCompileFor):
        (JSC::DEFINE_STUB_FUNCTION):
        (JSC::arityCheckFor):
        (JSC::lazyLinkFor):
        * runtime/Executable.h:
        (JSC::ExecutableBase::generatedJITCodeFor):
        (JSC::FunctionExecutable::compileFor):
        (JSC::FunctionExecutable::isGeneratedFor):
        (JSC::FunctionExecutable::generatedBytecodeFor):
        (JSC::FunctionExecutable::generatedJITCodeWithArityCheckFor):

2011-07-05  Gavin Barraclough  <barraclough@apple.com>

        Build fix following last patch.

        * runtime/JSFunction.cpp:
        (JSC::createPrototypeProperty):

2011-07-05  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=63947
        ASSERT running Object.preventExtensions(Math.sin)

        Reviewed by Oliver Hunt.

        This is due to calling scope() on a hostFunction as a part of
        calling createPrototypeProperty to reify the prototype property.
        But host functions don't have a prototype property anyway!

        Prevent callling createPrototypeProperty on a host function.

        * runtime/JSFunction.cpp:
        (JSC::JSFunction::createPrototypeProperty):
        (JSC::JSFunction::preventExtensions):

2011-07-04  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=63880
        Evaluation order of conversions of operands to >, >= incorrect.

        Reviewed by Sam Weinig.

        Add 'leftFirst' parameter to jsLess, jsLessEq matching that described in the ES5
        spec. This allows these methods to be reused to perform >, >= relational compares
        with correct ordering of type conversions.

        * dfg/DFGOperations.cpp:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/Operations.h:
        (JSC::jsLess):
        (JSC::jsLessEq):

2011-07-04  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=16652
        Firefox and JavaScriptCore differ in Number.toString(integer)

        Our arbitrary radix (2..36) toString conversion is inaccurate.
        This is partly because it uses doubles to perform math that requires
        higher accuracy, and partly becasue it does not attempt to correctly
        detect where to terminate, instead relying on a simple 'epsilon'.

        * runtime/NumberPrototype.cpp:
        (JSC::decomposeDouble):
            - helper function to extract sign, exponent, mantissa from IEEE doubles.
        (JSC::Uint16WithFraction::Uint16WithFraction):
            - helper class, u16int with infinite precision fraction, used to convert
              the fractional part of the number to a string.
        (JSC::Uint16WithFraction::operator*=):
            - Multiply by a uint16.
        (JSC::Uint16WithFraction::operator<):
            - Compare two Uint16WithFractions.
        (JSC::Uint16WithFraction::floorAndSubtract):
            - Extract the integer portion of the number, and subtract it (clears the integer portion).
        (JSC::Uint16WithFraction::comparePoint5):
            - Compare to 0.5.
        (JSC::Uint16WithFraction::sumGreaterThanOne):
            - Passed a second Uint16WithFraction, returns true if the result of adding
              the two values would be greater than one.
        (JSC::Uint16WithFraction::isNormalized):
            - Used by ASSERTs to consistency check internal representation.
        (JSC::BigInteger::BigInteger):
            - helper class, unbounded integer value, used to convert the integer part
              of the number to a string.
        (JSC::BigInteger::divide):
            - Divide this value through by a uint32.
        (JSC::BigInteger::operator!):
            - test for zero.
        (JSC::toStringWithRadix):
            - Performs number to string conversion, with the given radix (2..36).
        (JSC::numberProtoFuncToString):
            - Changed to use toStringWithRadix.

2011-07-04  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=63881
        Need separate bytecodes for handling >, >= comparisons.

        Reviewed by Oliver Hunt.

        This clears the way to fix Bug#63880. We currently handle greater-than comparisons
        as being using the corresponding op_less, etc opcodes.  This is incorrect with
        respect to evaluation ordering of the implicit conversions performed on operands -
        we should be calling ToPrimitive on the LHS and RHS operands to the greater than,
        but instead convert RHS then LHS.

        This patch adds opcodes for greater-than comparisons mirroring existing ones used
        for less-than.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        * bytecode/Opcode.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitJumpIfTrue):
        (JSC::BytecodeGenerator::emitJumpIfFalse):
        * bytecompiler/NodesCodegen.cpp:
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compare):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compare):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompileSlowCases):
        * jit/JIT.h:
        (JSC::JIT::emit_op_loop_if_greater):
        (JSC::JIT::emitSlow_op_loop_if_greater):
        (JSC::JIT::emit_op_loop_if_greatereq):
        (JSC::JIT::emitSlow_op_loop_if_greatereq):
        * jit/JITArithmetic.cpp:
        (JSC::JIT::emit_op_jgreater):
        (JSC::JIT::emit_op_jgreatereq):
        (JSC::JIT::emit_op_jngreater):
        (JSC::JIT::emit_op_jngreatereq):
        (JSC::JIT::emitSlow_op_jgreater):
        (JSC::JIT::emitSlow_op_jgreatereq):
        (JSC::JIT::emitSlow_op_jngreater):
        (JSC::JIT::emitSlow_op_jngreatereq):
        (JSC::JIT::emit_compareAndJumpSlow):
        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emitBinaryDoubleOp):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JITStubs.h:
        * parser/NodeConstructors.h:
        (JSC::GreaterNode::GreaterNode):
        (JSC::GreaterEqNode::GreaterEqNode):
        * parser/Nodes.h:

2011-07-03  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=63879
        Reduce code duplication for op_jless, op_jlesseq, op_jnless, op_jnlesseq.

        Reviewed by Sam Weinig.
        
        There is a lot of copy & paste code here; we can reduce duplication by making
        a shared implementation.

        * assembler/MacroAssembler.h:
        (JSC::MacroAssembler::branch32):
        (JSC::MacroAssembler::commute):
            - Make these function platform agnostic.
        * assembler/MacroAssemblerX86Common.h:
            - Moved branch32/commute up to MacroAssembler.
        * jit/JIT.h:
        (JSC::JIT::emit_op_loop_if_lesseq):
        (JSC::JIT::emitSlow_op_loop_if_lesseq):
            - Add an implementation matching that for op_loop_if_less, which just calls op_jless.
        * jit/JITArithmetic.cpp:
        (JSC::JIT::emit_op_jless):
        (JSC::JIT::emit_op_jlesseq):
        (JSC::JIT::emit_op_jnless):
        (JSC::JIT::emit_op_jnlesseq):
        (JSC::JIT::emitSlow_op_jless):
        (JSC::JIT::emitSlow_op_jlesseq):
        (JSC::JIT::emitSlow_op_jnless):
        (JSC::JIT::emitSlow_op_jnlesseq):
            - Common implmentations of these methods for JSVALUE64 & JSVALUE32_64.
        (JSC::JIT::emit_compareAndJump):
        (JSC::JIT::emit_compareAndJumpSlow):
            - Internal implmementation of jless etc for JSVALUE64.
        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emit_compareAndJump):
        (JSC::JIT::emit_compareAndJumpSlow):
            - Internal implmementation of jless etc for JSVALUE32_64.
        * jit/JITOpcodes.cpp:
        * jit/JITOpcodes32_64.cpp:
        * jit/JITStubs.cpp:
        * jit/JITStubs.h:
            - Remove old implementation of emit_op_loop_if_lesseq.

2011-07-03  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r90347.
        http://trac.webkit.org/changeset/90347
        https://bugs.webkit.org/show_bug.cgi?id=63886

        Build breaks on Leopard, Chromium-win, WinCairo, and WinCE.
        (Requested by tkent on #webkit).

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/BigInteger.h: Removed.
        * runtime/NumberPrototype.cpp:
        (JSC::numberProtoFuncToPrecision):
        (JSC::numberProtoFuncToString):
        * runtime/Uint16WithFraction.h: Removed.
        * wtf/MathExtras.h:

2011-06-30  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=16652
        Firefox and JavaScriptCore differ in Number.toString(integer)

        Our arbitrary radix (2..36) toString conversion is inaccurate.
        This is partly because it uses doubles to perform math that requires
        higher accuracy, and partly becasue it does not attempt to correctly
        detect where to terminate, instead relying on a simple 'epsilon'.

        * runtime/NumberPrototype.cpp:
        (JSC::decomposeDouble):
            - helper function to extract sign, exponent, mantissa from IEEE doubles.
        (JSC::Uint16WithFraction::Uint16WithFraction):
            - helper class, u16int with infinite precision fraction, used to convert
              the fractional part of the number to a string.
        (JSC::Uint16WithFraction::operator*=):
            - Multiply by a uint16.
        (JSC::Uint16WithFraction::operator<):
            - Compare two Uint16WithFractions.
        (JSC::Uint16WithFraction::floorAndSubtract):
            - Extract the integer portion of the number, and subtract it (clears the integer portion).
        (JSC::Uint16WithFraction::comparePoint5):
            - Compare to 0.5.
        (JSC::Uint16WithFraction::sumGreaterThanOne):
            - Passed a second Uint16WithFraction, returns true if the result of adding
              the two values would be greater than one.
        (JSC::Uint16WithFraction::isNormalized):
            - Used by ASSERTs to consistency check internal representation.
        (JSC::BigInteger::BigInteger):
            - helper class, unbounded integer value, used to convert the integer part
              of the number to a string.
        (JSC::BigInteger::divide):
            - Divide this value through by a uint32.
        (JSC::BigInteger::operator!):
            - test for zero.
        (JSC::toStringWithRadix):
            - Performs number to string conversion, with the given radix (2..36).
        (JSC::numberProtoFuncToString):
            - Changed to use toStringWithRadix.

2011-07-02  Gavin Barraclough  <barraclough@apple.com>

        https://bugs.webkit.org/show_bug.cgi?id=63866
        DFG JIT - implement instanceof

        Reviewed by Sam Weinig.

        Add ops CheckHasInstance & InstanceOf to implement bytecodes
        op_check_has_instance & op_instanceof. This is an initial
        functional implementation, performance is a wash. We can
        follow up with changes to fuse the InstanceOf node with
        a subsequant branch, as we do with other comparisons.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::jitAssertIsCell):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::jitAssertIsCell):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-07-01  Oliver Hunt  <oliver@apple.com>

        IE Web Workers demo crashes in JSC::SlotVisitor::visitChildren()
        https://bugs.webkit.org/show_bug.cgi?id=63732

        Reviewed by Gavin Barraclough.

        Initialise the memory at the head of the new storage so that
        GC is safe if triggered by reportExtraMemoryCost.

        * runtime/JSArray.cpp:
        (JSC::JSArray::increaseVectorPrefixLength):

2011-07-01  Oliver Hunt  <oliver@apple.com>

        GC sweep can occur before an object is completely initialised
        https://bugs.webkit.org/show_bug.cgi?id=63836

        Reviewed by Gavin Barraclough.

        In rare cases it's possible for a GC sweep to occur while a
        live, but not completely initialised object is on the stack.
        In such a case we may incorrectly choose to mark it, even
        though it has no children that need marking.

        We resolve this by always zeroing out the structure of any
        value returned from JSCell::operator new(), and making the
        markstack tolerant of a null structure. 

        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::~JSCell):
        (JSC::JSCell::JSCell::operator new):
        * runtime/Structure.h:
        (JSC::MarkStack::internalAppend):

2011-07-01  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG non-speculative JIT always performs slow C calls for div and mod.
        https://bugs.webkit.org/show_bug.cgi?id=63684

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):

2011-07-01  Juan C. Montemayor  <jmont@apple.com>

        Reviewed by Oliver Hunt.

        Lexer error messages are currently appalling
        https://bugs.webkit.org/show_bug.cgi?id=63340

        Added error messages for the Lexer. These messages will be displayed
        instead of the lexer error messages from the parser that are currently
        shown.

        * parser/Lexer.cpp:
        (JSC::Lexer::getInvalidCharMessage):
        (JSC::Lexer::setCode):
        (JSC::Lexer::parseString):
        (JSC::Lexer::lex):
        (JSC::Lexer::clear):
        * parser/Lexer.h:
        (JSC::Lexer::getErrorMessage):
        (JSC::Lexer::setOffset):
        * parser/Parser.cpp:
        (JSC::Parser::parse):

2011-07-01  Jungshik Shin  <jshin@chromium.org>

        Reviewed by Alexey Proskuryakov.

        Add ScriptCodesFromICU.h to wtf/unicode and make necessary changes in
        build files for ports not using ICU.
        Add icu/unicode/uscript.h for ports using ICU. It's taken from 
        ICU 3.6 (the version used on Mac OS 10.5)

        http://bugs.webkit.org/show_bug.cgi?id=20797

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * icu/unicode/uscript.h: Added for UScriptCode enum.
        * wtf/unicode/ScriptCodesFromICU.h: UScriptCode enum added.
        * wtf/unicode/icu/UnicodeIcu.h:
        * wtf/unicode/brew/UnicodeBrew.h:
        * wtf/unicode/glib/UnicodeGLib.h:
        * wtf/unicode/qt4/UnicodeQt4.h:
        * wtf/unicode/wince/UnicodeWinCE.h:

2011-07-01  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=63819
        Escaping of forwardslashes in strings incorrect if multiple exist.

        The bug is in the parameters passed to a substring - should be
        start & length, but we're passing start & end indices!

        * runtime/RegExpObject.cpp:
        (JSC::regExpObjectSource):

2011-07-01  Adam Roben  <aroben@apple.com>

        Roll out r90194
        http://trac.webkit.org/changeset/90194
        https://bugs.webkit.org/show_bug.cgi?id=63778

        Fixes <http://webkit.org/b/63812> REGRESSION (r90194): Multiple tests intermittently failing
        assertions in WriteBarrierBase<JSC::Structure>::get

        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::~JSCell):

2011-06-30  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Add optimised paths for a few maths functions
        https://bugs.webkit.org/show_bug.cgi?id=63757

        Relanding as a Mac only patch.

        This adds specialised thunks for Math.abs, Math.round, Math.ceil,
        Math.floor, Math.log, and Math.exp as they are apparently more
        important in real web content than we thought, which is somewhat
        mind-boggling.  On average doubles the performance of the common
        cases (eg. actually passing numbers in).  They're not as efficient
        as they could be, but this way gives them the most portability.

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::supportsDoubleBitops):
        (JSC::MacroAssemblerARM::andnotDouble):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::supportsDoubleBitops):
        (JSC::MacroAssemblerARMv7::andnotDouble):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::andnotDouble):
        (JSC::MacroAssemblerMIPS::supportsDoubleBitops):
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::supportsDoubleBitops):
        (JSC::MacroAssemblerSH4::andnotDouble):
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::supportsDoubleBitops):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::andnotDouble):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::supportsDoubleBitops):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::andnpd_rr):
        * create_hash_table:
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::finalize):
        (JSC::SpecializedThunkJIT::callDoubleToDouble):
        * jit/ThunkGenerators.cpp:
        (JSC::floorThunkGenerator):
        (JSC::ceilThunkGenerator):
        (JSC::roundThunkGenerator):
        (JSC::expThunkGenerator):
        (JSC::logThunkGenerator):
        (JSC::absThunkGenerator):
        * jit/ThunkGenerators.h:

2011-07-01  David Kilzer  <ddkilzer@apple.com>

        <http://webkit.org/b/63814> Fix clang build error in JITOpcodes32_64.cpp

        Fixes the following build error in clang:

            JavaScriptCore/jit/JITOpcodes32_64.cpp:741:36:{741:9-741:35}: error: operator '?:' has lower precedence than '+'; '+' will be evaluated first [-Werror,-Wparentheses,3]
                 map(m_bytecodeOffset + dynamic ? OPCODE_LENGTH(op_resolve_global_dynamic) : OPCODE_LENGTH(op_resolve_global), dst, regT1, regT0);
                     ~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
            JavaScriptCore/jit/JITOpcodes32_64.cpp:741:36: note: place parentheses around the '+' expression to silence this warning [3]
                 map(m_bytecodeOffset + dynamic ? OPCODE_LENGTH(op_resolve_global_dynamic) : OPCODE_LENGTH(op_resolve_global), dst, regT1, regT0);
                                                ^
                     (                         )
            fix-it:"JavaScriptCore/jit/JITOpcodes32_64.cpp":{741:9-741:9}:"("
            fix-it:"JavaScriptCore/jit/JITOpcodes32_64.cpp":{741:35-741:35}:")"
            JavaScriptCore/jit/JITOpcodes32_64.cpp:741:36:{741:28-741:94}: note: place parentheses around the '?:' expression to evaluate it first [3]
                 map(m_bytecodeOffset + dynamic ? OPCODE_LENGTH(op_resolve_global_dynamic) : OPCODE_LENGTH(op_resolve_global), dst, regT1, regT0);
                                        ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            1 error generated.

        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_resolve_global): Add parenthesis to make the
        tertiary expression evaluate first.

2011-07-01  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r90177 and r90179.
        http://trac.webkit.org/changeset/90177
        http://trac.webkit.org/changeset/90179
        https://bugs.webkit.org/show_bug.cgi?id=63790

        It caused crashes on Qt in debug mode (Requested by Ossy on
        #webkit).

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::rshift32):
        (JSC::MacroAssemblerARM::supportsFloatingPointSqrt):
        (JSC::MacroAssemblerARM::sqrtDouble):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::supportsFloatingPointSqrt):
        (JSC::MacroAssemblerARMv7::sqrtDouble):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::sqrtDouble):
        (JSC::MacroAssemblerMIPS::supportsFloatingPointSqrt):
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::sqrtDouble):
        * assembler/MacroAssemblerX86.h:
        * assembler/MacroAssemblerX86Common.h:
        * assembler/MacroAssemblerX86_64.h:
        * assembler/X86Assembler.h:
        * create_hash_table:
        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::emitLoadDouble):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::finalize):
        * jit/ThunkGenerators.cpp:
        * jit/ThunkGenerators.h:

2011-06-30  Oliver Hunt  <oliver@apple.com>

        Reviewed by Beth Dakin.

        Make GC validation clear cell structure on destruction
        https://bugs.webkit.org/show_bug.cgi?id=63778

        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::~JSCell):

2011-06-30  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Gavin Barraclough.

        Added write barrier that was missing from put_by_id_transition
        https://bugs.webkit.org/show_bug.cgi?id=63775

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::writeBarrier): Made this static with a
        MacroAssembler& argument so our patching functions could use it.

        (JSC::DFG::JITCodeGenerator::cachedPutById):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile): Updated for signature change.

        * dfg/DFGRepatch.cpp:
        (JSC::DFG::tryCachePutByID): Missing barrier!

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile): Updated for signature change.

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompilePutByIdTransition):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompilePutByIdTransition):
        * jit/JSInterfaceJIT.h: Same game here. Removed storePtrWithWriteBarrier
        because its meaning isn't clear -- maybe in the future we'll have a
        clear way to pass all stores through a common function that guarantees
        a write barrier, but that's not the case right now.

2011-06-30  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG non-speculative JIT does not reuse registers when compiling comparisons.
        https://bugs.webkit.org/show_bug.cgi?id=63565

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        (JSC::DFG::NonSpeculativeJIT::compare):

2011-06-30  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Gavin Barraclough.

        Added empty write barrier stubs in all the right places in the DFG JIT
        https://bugs.webkit.org/show_bug.cgi?id=63764
        
        SunSpider thinks this might be a 0.5% speedup. Meh.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::writeBarrier): Le stub.

        (JSC::DFG::JITCodeGenerator::cachedPutById): Don't do anything special
        for the case where base == scratch, since we now require base and scratch
        to be not equal, for the sake of the write barrier.

        * dfg/DFGJITCodeGenerator.h: Le stub.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile): Don't reuse the base register
        as the scratch register, since that's incompatible with the write barrier,
        which needs a distinct base and scratch.
        
        Do put the global object into a register before loading its var storage,
        since it needs to be in a register for the write barrier to operate on it.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emitWriteBarrier): Second verse, same as the first.

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_get_scoped_var):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_put_global_var): Deployed offsetOfRegisters() to more
        places.

        (JSC::JIT::emitWriteBarrier): Added a teeny tiny ASSERT so this function
        is a little more than meaningless.

        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_get_scoped_var):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_put_global_var): Deployed offsetOfRegisters() to more
        places.

        (JSC::JIT::emitWriteBarrier): Added a teeny tiny ASSERT so this function
        is a little more than meaningless.

        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::offsetOfRegisters): Now used by the JIT, since
        we put the global object in a register and only then load its var storage
        by offset.

        (JSC::JIT::emitWriteBarrier):

2011-06-30  Oliver Hunt  <oliver@apple.com>

        Fix ARMv6 build

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::rshift32):

2011-06-30  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Add optimised paths for a few maths functions
        https://bugs.webkit.org/show_bug.cgi?id=63757

        This adds specialised thunks for Math.abs, Math.round, Math.ceil,
        Math.floor, Math.log, and Math.exp as they are apparently more
        important in real web content than we thought, which is somewhat
        mind-boggling.  On average doubles the performance of the common
        cases (eg. actually passing numbers in).  They're not as efficient
        as they could be, but this way gives them the most portability.

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::supportsDoubleBitops):
        (JSC::MacroAssemblerARM::andnotDouble):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::supportsDoubleBitops):
        (JSC::MacroAssemblerARMv7::andnotDouble):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::andnotDouble):
        (JSC::MacroAssemblerMIPS::supportsDoubleBitops):
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::supportsDoubleBitops):
        (JSC::MacroAssemblerSH4::andnotDouble):
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::supportsDoubleBitops):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::andnotDouble):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::supportsDoubleBitops):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::andnpd_rr):
        * create_hash_table:
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::finalize):
        (JSC::SpecializedThunkJIT::callDoubleToDouble):
        * jit/ThunkGenerators.cpp:
        (JSC::floorThunkGenerator):
        (JSC::ceilThunkGenerator):
        (JSC::roundThunkGenerator):
        (JSC::expThunkGenerator):
        (JSC::logThunkGenerator):
        (JSC::absThunkGenerator):
        * jit/ThunkGenerators.h:

2011-06-30  Cary Clark  <caryclark@google.com>

        Reviewed by James Robinson.

        Use Skia if Skia on Mac Chrome is enabled
        https://bugs.webkit.org/show_bug.cgi?id=62999

        * wtf/Platform.h:
        Add switch to use Skia if, externally,
        Skia has been enabled by a gyp define.

2011-06-30  Juan C. Montemayor  <jmont@apple.com>

        Reviewed by Geoffrey Garen.

        Web Inspector fails to display source for eval with syntax error
        https://bugs.webkit.org/show_bug.cgi?id=63583

        Web Inspector now displays a link to an eval statement that contains
        a syntax error.

        * parser/Parser.h:
        (JSC::isEvalNode):
        (JSC::EvalNode):
        (JSC::Parser::parse):

2011-06-30  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        X86Assembler does not encode byte registers in 64-bit mode correctly.
        https://bugs.webkit.org/show_bug.cgi?id=63665

        * assembler/X86Assembler.h:
        (JSC::X86Assembler::testb_rr):
        (JSC::X86Assembler::X86InstructionFormatter::oneByteOp8):

2011-06-30  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r90102.
        http://trac.webkit.org/changeset/90102
        https://bugs.webkit.org/show_bug.cgi?id=63714

        Lots of tests asserting beneath
        SVGSMILElement::findInstanceTime (Requested by aroben on
        #webkit).

        * wtf/StdLibExtras.h:
        (WTF::binarySearch):

2011-06-30  Oliver Varga  <Varga.Oliver@stud.u-szeged.hu>

        Reviewed by Nikolas Zimmermann.

        Speed up SVGSMILElement::findInstanceTime.
        https://bugs.webkit.org/show_bug.cgi?id=61025

        Add a new parameter to StdlibExtras.h::binarySerarch function
        to also handle cases when the array does not contain the key value.
        This is needed for an svg function.

        * wtf/StdLibExtras.h:
        (WTF::binarySearch):

2011-06-29  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=63669
        DFG JIT - fix spectral-norm regression

        The problem is a mis-speculation leading to us falling off the speculative path.
        Make the speculation logic slightly smarter, don't predict int if one of the
        operands is already loaded as a double (we use this logic already for compares).

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::shouldSpeculateInteger):

2011-06-29  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG JIT does not do put_by_id transition caching.
        https://bugs.webkit.org/show_bug.cgi?id=63662

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedPutById):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::addPropertyAccess):
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::testPrototype):
        (JSC::DFG::tryCachePutByID):

2011-06-29  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Added a dummy write barrier emitting function in all the right places in the old JIT
        https://bugs.webkit.org/show_bug.cgi?id=63667
        
        SunSpider reports no change.

        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::emit_op_put_scoped_var): Do it.

        (JSC::JIT::emit_op_put_global_var): Global object needs to be in a register
        for the sake of the write barrier.

        (JSC::JIT::emitWriteBarrier): Empty for now. Not for long!

        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_put_by_val):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::emit_op_put_scoped_var): Do it.

        (JSC::JIT::emit_op_put_global_var): Global object needs to be in a register
        for the sake of the write barrier.

        (JSC::JIT::emitWriteBarrier): Empty for now. Not for long!

2011-06-29  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG JIT does not perform get_by_id self list caching.
        https://bugs.webkit.org/show_bug.cgi?id=63605

        * bytecode/StructureStubInfo.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::tryCacheGetByID):
        (JSC::DFG::tryBuildGetByIDList):
        (JSC::DFG::dfgBuildGetByIDList):
        * dfg/DFGRepatch.h:

2011-06-28  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG JIT lacks array.length caching.
        https://bugs.webkit.org/show_bug.cgi?id=63505

        * bytecode/StructureStubInfo.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedGetById):
        (JSC::DFG::JITCodeGenerator::cachedPutById):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::tryAllocate):
        (JSC::DFG::JITCodeGenerator::selectScratchGPR):
        (JSC::DFG::JITCodeGenerator::silentSpillAllRegisters):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::addPropertyAccess):
        (JSC::DFG::JITCompiler::PropertyAccessRecord::PropertyAccessRecord):
        * dfg/DFGRegisterBank.h:
        (JSC::DFG::RegisterBank::tryAllocate):
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::tryCacheGetByID):

2011-06-28  Pierre Rossi  <pierre.rossi@gmail.com>

        Reviewed by Eric Seidel.

        Warnings in JSC's JIT on 32 bit
        https://bugs.webkit.org/show_bug.cgi?id=63259

        Fairly straightforward, just use ASSERT_JIT_OFFSET_UNUSED when it applies.

        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):

2011-06-28  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r89968.
        http://trac.webkit.org/changeset/89968
        https://bugs.webkit.org/show_bug.cgi?id=63581

        Broke chromium windows compile (Requested by jamesr on
        #webkit).

        * wtf/Platform.h:

2011-06-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Fix sampling build
        https://bugs.webkit.org/show_bug.cgi?id=63579

        Gets opcode sampling building again, doesn't seem to work alas

        * bytecode/SamplingTool.cpp:
        (JSC::SamplingTool::notifyOfScope):
        * bytecode/SamplingTool.h:
        (JSC::SamplingTool::SamplingTool):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::enableSampler):
        * runtime/Executable.h:
        (JSC::ScriptExecutable::ScriptExecutable):

2011-06-28  Cary Clark  <caryclark@google.com>

        Reviewed by James Robinson.

        Use Skia if Skia on Mac Chrome is enabled
        https://bugs.webkit.org/show_bug.cgi?id=62999

        * wtf/Platform.h:
        Add switch to use Skia if, externally,
        Skia has been enabled by a gyp define.

2011-06-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        ASSERT when launching debug builds with interpreter and jit enabled
        https://bugs.webkit.org/show_bug.cgi?id=63566

        Add appropriate guards to the various Executable's memory reporting
        logic.

        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileForCallInternal):
        (JSC::FunctionExecutable::compileForConstructInternal):

2011-06-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=63563
        DFG JIT - add support for double arith to speculative path

        Add integer support for div & mod, add double support for div, mod,
        add, sub & mul, dynamically selecting based on operand types.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::FPRTemporary::FPRTemporary):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::assembler):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateDouble):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculateDoubleOperand::SpeculateDoubleOperand):
        (JSC::DFG::SpeculateDoubleOperand::~SpeculateDoubleOperand):
        (JSC::DFG::SpeculateDoubleOperand::index):
        (JSC::DFG::SpeculateDoubleOperand::fpr):

2011-06-28  Oliver Hunt  <oliver@apple.com>

        Fix interpreter build.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):

2011-06-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=63561
        DFG JIT - don't always assume integer in relational compare

        If neither operand is known integer, or either is in double representation,
        then at least use a function call (don't bail off the speculative path).

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compilePeepHoleCall):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isDataFormatDouble):
        (JSC::DFG::SpeculativeJIT::compareIsInteger):

2011-06-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make constant array optimisation less strict about what constitutes a constant
        https://bugs.webkit.org/show_bug.cgi?id=63554

        Now allow string constants in array literals to actually be considered constant,
        and so avoid codegen in array literals with strings in them.

        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addConstantBuffer):
        (JSC::CodeBlock::constantBuffer):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addConstantBuffer):
        (JSC::BytecodeGenerator::addStringConstant):
        (JSC::BytecodeGenerator::emitNewArray):
        * bytecompiler/BytecodeGenerator.h:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):

2011-06-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=63560
        DFG_JIT allow allocation of specific machine registers

        This allow us to allocate the registers necessary to perform x86
        idiv instructions for div/mod, and may be useful for shifts, too.

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::GPRTemporary::GPRTemporary):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::allocate):
        (JSC::DFG::GPRResult::GPRResult):
        * dfg/DFGRegisterBank.h:
        (JSC::DFG::RegisterBank::allocateSpecific):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isInteger):

2011-06-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=55040
        RegExp constructor returns the argument regexp instead of a new object

        Per 15.10.3.1, our current behaviour is correct if called as a function,
        but incorrect when called as a constructor.

        * runtime/RegExpConstructor.cpp:
        (JSC::constructRegExp):
        (JSC::constructWithRegExpConstructor):
        * runtime/RegExpConstructor.h:

2011-06-28  Luke Macpherson   <macpherson@chromium.org>

        Reviewed by Darin Adler.

        Clean up integer clamping functions in MathExtras.h and support arbitrary numeric types and limits.
        https://bugs.webkit.org/show_bug.cgi?id=63469

        * wtf/MathExtras.h:
        (defaultMinimumForClamp):
        Version of std::numeric_limits::min() that returns the largest negative value for floating point types.
        (defaultMaximumForClamp):
        Symmetric alias for std::numeric_limits::max()
        (clampTo):
        New templated clamping function that supports arbitrary output types.
        (clampToInteger):
        Use new clampTo template.
        (clampToFloat):
        Use new clampTo template.
        (clampToPositiveInteger):
        Use new clampTo template.

2011-06-28  Adam Roben  <aroben@apple.com>

        Windows Debug build fix after r89885

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Exported
        JSGlobalData::releaseExecutableMemory for jsc.exe's benefit.

2011-06-28  Shinya Kawanaka  <shinyak@google.com>

        Reviewed by Kent Tamura.

        Add const to show() method in WTFString and AtomicString.
        https://bugs.webkit.org/show_bug.cgi?id=63515

        The lack of const in show() method is painful when
        doing something like printf-debug.

        * wtf/text/AtomicString.cpp:
        (WTF::AtomicString::show):
        * wtf/text/AtomicString.h:
        * wtf/text/WTFString.cpp:
        (String::show):
        * wtf/text/WTFString.h:

2011-06-27  Ryosuke Niwa  <rniwa@webkit.org>

        Build fix attempt after r89885.

        * JavaScriptCore.exp:
        * jsc.cpp:

2011-06-27  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Support throwing away non-running code even while other code is running
        https://bugs.webkit.org/show_bug.cgi?id=63485

        Add a function to CodeBlock to support unlinking direct linked callsites,
        and then with that in place add logic to discard code from any function
        that is not currently on the stack.

        The unlinking completely reverts any optimized call sites, such that they
        may be relinked again in future.

        * JavaScriptCore.exp:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::unlinkCalls):
        (JSC::CodeBlock::clearEvalCache):
        * bytecode/CodeBlock.h:
        (JSC::CallLinkInfo::CallLinkInfo):
        (JSC::CallLinkInfo::unlink):
        * bytecode/EvalCodeCache.h:
        (JSC::EvalCodeCache::clear):
        * heap/Heap.cpp:
        (JSC::Heap::getConservativeRegisterRoots):
        * heap/Heap.h:
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCall):
        * jit/JITWriteBarrier.h:
        (JSC::JITWriteBarrierBase::clear):
        * jsc.cpp:
        (GlobalObject::GlobalObject):
        (functionReleaseExecutableMemory):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::unlinkCalls):
        (JSC::ProgramExecutable::unlinkCalls):
        (JSC::FunctionExecutable::discardCode):
        (JSC::FunctionExecutable::unlinkCalls):
        * runtime/Executable.h:
        * runtime/JSGlobalData.cpp:
        (JSC::SafeRecompiler::returnValue):
        (JSC::SafeRecompiler::operator()):
        (JSC::JSGlobalData::releaseExecutableMemory):

2011-06-27  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Darin Adler & Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=50554
        RegExp.prototype.toString does not escape slashes

        The problem here is that we don't escape forwards slashes when converting
        a RegExp to a string. This means that RegExp("/").toString() is "///",
        which is not a valid RegExp literal. Also, we return an invalid literal
        for RegExp.prototype.toString() ("//", which is an empty single-line comment).

        From ES5:
        "NOTE: The returned String has the form of a RegularExpressionLiteral that
        evaluates to another RegExp object with the same behaviour as this object."

        * runtime/RegExpObject.cpp:
        (JSC::regExpObjectSource):
            - Escape forward slashes when getting the source of a RegExp.
        * runtime/RegExpPrototype.cpp:
        (JSC::regExpProtoFuncToString):
            - Remove unnecessary and erroneous hack to return "//" as the string
            representation of RegExp.prototype. This is not a valid RegExp literal
            (it is an empty single-line comment).

2011-06-27  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=63497
        Add DEBUG_WITH_BREAKPOINT support to the DFG JIT.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-06-27  Juan C. Montemayor  <jmont@apple.com>

        Reviewed by Mark Rowe.

        Indirectly including TextPosition.h and XPathGrammar.h causes compile errors
        https://bugs.webkit.org/show_bug.cgi?id=63392
        
        When both TextPosition.h and XPathGrammar.h are included a compile-error
        is caused, since XPathGrammar.h defines a macro called NUMBER and 
        TextPosition has a typedef named NUMBER.

        * wtf/text/TextPosition.h:
        (WTF::TextPosition::TextPosition):
        (WTF::TextPosition::minimumPosition):
        (WTF::TextPosition::belowRangePosition):

2011-06-27  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG JIT does not perform put_by_id caching.
        https://bugs.webkit.org/show_bug.cgi?id=63409

        * bytecode/StructureStubInfo.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedPutById):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::addPropertyAccess):
        (JSC::DFG::JITCompiler::PropertyAccessRecord::PropertyAccessRecord):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGOperations.cpp:
        * dfg/DFGOperations.h:
        * dfg/DFGRepatch.cpp:
        (JSC::DFG::dfgRepatchByIdSelfAccess):
        (JSC::DFG::tryCacheGetByID):
        (JSC::DFG::appropriatePutByIdFunction):
        (JSC::DFG::tryCachePutByID):
        (JSC::DFG::dfgRepatchPutByID):
        * dfg/DFGRepatch.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-06-27  Gustavo Noronha Silva  <gns@gnome.org>

        Unreviewed build fix. One more filed missing during distcheck, for
        the MIPS build.

        * GNUmakefile.list.am:

2011-06-26  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG non-speculative JIT has potentially harmful speculations with respect to arithmetic operations.
        https://bugs.webkit.org/show_bug.cgi?id=63347

        * dfg/DFGNonSpeculativeJIT.cpp:
            - Changed arithmetic operations to speculate in favor of integers.
        (JSC::DFG::NonSpeculativeJIT::valueToNumber):
        (JSC::DFG::NonSpeculativeJIT::knownConstantArithOp):
        (JSC::DFG::NonSpeculativeJIT::basicArithOp):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        * dfg/DFGOperations.cpp:
            - Added slow-path routines for arithmetic that perform no speculation; the
              non-speculative JIT will generate calls to these in cases where its
              speculation fails.
        * dfg/DFGOperations.h:

2011-06-24  Nikolas Zimmermann  <nzimmermann@rim.com>

        Reviewed by Rob Buis.

        Integrate SVG Fonts within GlyphPage concept, removing the special SVG code paths from Font, making it possible to reuse the simple text code path for SVG Fonts
        https://bugs.webkit.org/show_bug.cgi?id=59085

        * wtf/Platform.h: Force Qt-EWS into a full rebuild, otherwhise this patch breaks the EWS.

2011-06-24  Michael Saboff  <msaboff@apple.com>

        Reviewed by Gavin Barraclough.

        Arm Assembler, Immediate stack offset values truncated to 8 bits for add & sub
        https://bugs.webkit.org/show_bug.cgi?id=63345

        The methods ARMThumbImmediate::getUInt9 and ARMThumbImmediate::getUInt10
        return 9 and 10 bit quantities, therefore changed their return type from
        uint8_t to uint16_t.  Also casted the places where they are used as they
        are currently shifted and used as 7 or 8 bit values.

        These methods are currently used for literals for stack offsets, 
        including creating and destroying stack frames.  The prior truncation of
        the upper bits caused stack frames to be too small, thus allowing a
        JIT'ed function to access and overwrite stack space outside of the
        incorrectly sized stack frame.

        * assembler/ARMv7Assembler.h:
        (JSC::ARMThumbImmediate::getUInt9):
        (JSC::ARMThumbImmediate::getUInt10):
        (JSC::ARMv7Assembler::add):
        (JSC::ARMv7Assembler::ldr):
        (JSC::ARMv7Assembler::str):
        (JSC::ARMv7Assembler::sub):
        (JSC::ARMv7Assembler::sub_S):

2011-06-24  Michael Saboff  <msaboff@apple.com>

        Reviewed by Geoffrey Garen.

        releaseFastMallocFreeMemory doesn't adjust free counts for scavenger
        https://bugs.webkit.org/show_bug.cgi?id=63015

        Added code to adjust class TCMalloc_PageHeap variables free_committed_pages_ and
        min_free_committed_pages_since_last_scavenge_ in ReleaseFreeList().  These 
        adjustments are a bug.  These need to reflect the pages that are released
        in ReleaseFreeLsit so that scavenge doesn't try to free that many pages as well.
        Made ReleaseFreeList a member of TCMalloc_PageHeap in the process.  Updated
        Check() and helper method CheckList() to check the number of actual free pages
        with free_committed_pages_.

        The symptom of the problem of the existing code is that the scavenger may
        run unneccesarily without any real work to do, i.e. pages on the free lists.
        The scanvenger would also end up freeing too many pages, that is going below 
        the current 528 target free pages.

        Note that the style of the changes was kept consistent with the
        existing style.

        * wtf/FastMalloc.cpp:
        (WTF::TCMalloc_PageHeap::Check):
        (WTF::TCMalloc_PageHeap::CheckList):
        (WTF::TCMalloc_PageHeap::ReleaseFreeList):

2011-06-24  Abhishek Arya  <inferno@chromium.org>

        Reviewed by Darin Adler.

        Match other clampTo* functions in style with clampToInteger(float)
        function.
        https://bugs.webkit.org/show_bug.cgi?id=53449

        * wtf/MathExtras.h:
        (clampToInteger):
        (clampToFloat):
        (clampToPositiveInteger):

2011-06-24  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r89594.
        http://trac.webkit.org/changeset/89594
        https://bugs.webkit.org/show_bug.cgi?id=63316

        It broke 5 tests on the Qt bot (Requested by Ossy_DC on
        #webkit).

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * icu/unicode/uscript.h: Removed.
        * wtf/unicode/ScriptCodesFromICU.h: Removed.
        * wtf/unicode/brew/UnicodeBrew.h:
        * wtf/unicode/glib/UnicodeGLib.h:
        * wtf/unicode/icu/UnicodeIcu.h:
        * wtf/unicode/qt4/UnicodeQt4.h:
        * wtf/unicode/wince/UnicodeWinCE.h:

2011-06-23  Filip Pizlo  <fpizlo@apple.com>

        Reviewed by Gavin Barraclough.

        DFG non-speculative JIT should have obvious optimizations for GetById and GetByVal
        https://bugs.webkit.org/show_bug.cgi?id=63173

        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::cachedGetById):
        * dfg/DFGJITCodeGenerator.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-06-23  Oliver Hunt  <oliver@apple.com>

        Fix Qt again.

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::readPointer):

2011-06-23  Oliver Hunt  <oliver@apple.com>

        Fix Qt Build

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::readPointer):

2011-06-23  Stephanie Lewis  <slewis@apple.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=63298
        Replace Malloc with FastMalloc to match the rest of wtf.

        * wtf/BlockStack.h:
        (WTF::::~BlockStack):
        (WTF::::grow):
        (WTF::::shrink):

2011-06-23  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Add the ability to dynamically modify linked call sites
        https://bugs.webkit.org/show_bug.cgi?id=63291

        Add JITWriteBarrier as a writebarrier class that allows
        reading and writing directly into the code stream.

        This required adding logic to all the assemblers to allow
        us to read values back out of the instruction stream.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::readPointer):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::readPointer):
        (JSC::ARMv7Assembler::readInt32):
        (JSC::ARMv7Assembler::decodeTwoWordOp5i6Imm4Reg4EncodedImmFirst):
        (JSC::ARMv7Assembler::decodeTwoWordOp5i6Imm4Reg4EncodedImmSecond):
        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::readPointer):
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::readInt32):
        (JSC::MIPSAssembler::readPointer):
        * assembler/MacroAssemblerCodeRef.h:
        (JSC::MacroAssemblerCodePtr::operator!):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::readPCrelativeAddress):
        (JSC::SH4Assembler::readPointer):
        (JSC::SH4Assembler::readInt32):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::readPointer):
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):
        * bytecode/CodeBlock.h:
        (JSC::MethodCallLinkInfo::seenOnce):
        (JSC::MethodCallLinkInfo::setSeen):
        * heap/MarkStack.h:
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        (JSC::JIT::linkCall):
        (JSC::JIT::linkConstruct):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::patchMethodCallProto):
        * jit/JITPropertyAccess32_64.cpp:
        * jit/JITWriteBarrier.h: Added.
        (JSC::JITWriteBarrierBase::operator UnspecifiedBoolType*):
        (JSC::JITWriteBarrierBase::operator!):
        (JSC::JITWriteBarrierBase::setFlagOnBarrier):
        (JSC::JITWriteBarrierBase::isFlagged):
        (JSC::JITWriteBarrierBase::setLocation):
        (JSC::JITWriteBarrierBase::location):
        (JSC::JITWriteBarrierBase::JITWriteBarrierBase):
        (JSC::JITWriteBarrierBase::set):
        (JSC::JITWriteBarrierBase::get):
        (JSC::JITWriteBarrier::JITWriteBarrier):
        (JSC::JITWriteBarrier::set):
        (JSC::JITWriteBarrier::get):
        (JSC::MarkStack::append):

2011-06-23  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=61585
        Crash running regexp /(?:(?=g))|(?:m).{2147483648,}/

        This is due to use of int instead of unsigned, bad math around
        the 2^31 boundary.

        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::ByteCompiler::emitDisjunction):
            - Change some uses of int to unsigned, refactor compare logic to
              restrict to the range 0..2^32-1 (rather than -2^32-1..2^32-1).
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::generate):
        (JSC::Yarr::YarrGenerator::backtrack):
            - Ditto.

2011-06-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=63218
        DFG JIT - remove machine type guarantees from graph

        The DFG JIT currently makes assumptions about the types of machine registers
        that certain nodes will be loaded into. This will be broken as we generate
        nodes to produce both integer and double code paths. Remove int<->double
        conversions nodes. This design decision also gave rise to multiple types of
        constant nodes, requiring separate handling for each type. Merge these back
        into JSConstant.

        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::equalIgnoringLaterNumericConversion):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::getToInt32):
        (JSC::DFG::ByteCodeParser::getToNumber):
        (JSC::DFG::ByteCodeParser::toInt32):
        (JSC::DFG::ByteCodeParser::toNumber):
        (JSC::DFG::ByteCodeParser::isInt32Constant):
        (JSC::DFG::ByteCodeParser::isDoubleConstant):
        (JSC::DFG::ByteCodeParser::valueOfInt32Constant):
        (JSC::DFG::ByteCodeParser::valueOfDoubleConstant):
        (JSC::DFG::ByteCodeParser::one):
        (JSC::DFG::ByteCodeParser::predictInt32):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::silentFillGPR):
        (JSC::DFG::JITCodeGenerator::silentFillFPR):
        (JSC::DFG::JITCodeGenerator::isJSConstant):
        (JSC::DFG::JITCodeGenerator::isDoubleConstant):
        (JSC::DFG::JITCodeGenerator::valueOfJSConstantAsImmPtr):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::fillInt32ToInteger):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::isJSConstant):
        (JSC::DFG::JITCompiler::isInt32Constant):
        (JSC::DFG::JITCompiler::isDoubleConstant):
        (JSC::DFG::JITCompiler::valueOfJSConstant):
        (JSC::DFG::JITCompiler::valueOfInt32Constant):
        (JSC::DFG::JITCompiler::valueOfDoubleConstant):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::Node):
        (JSC::DFG::Node::isConstant):
        (JSC::DFG::Node::notTakenBytecodeOffset):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::isKnownInteger):
        (JSC::DFG::NonSpeculativeJIT::isKnownNumeric):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::compilePeepHoleIntegerBranch):
        (JSC::DFG::SpeculativeJIT::compile):

2011-06-23  Jungshik Shin  <jshin@chromium.org>

        Reviewed by Alexey Proskuryakov.

        Add ScriptCodesFromICU.h to wtf/unicode and make necessary changes in
        build files for ports not using ICU.
        Add icu/unicode/uscript.h for ports using ICU. It's taken from 
        ICU 3.6 (the version used on Mac OS 10.5)

        http://bugs.webkit.org/show_bug.cgi?id=20797

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * icu/unicode/uscript.h: Added for UScriptCode enum.
        * wtf/unicode/ScriptCodesFromICU.h: UScriptCode enum added.
        * wtf/unicode/icu/UnicodeIcu.h:
        * wtf/unicode/brew/UnicodeBrew.h:
        * wtf/unicode/glib/UnicodeGLib.h:
        * wtf/unicode/qt4/UnicodeQt4.h:
        * wtf/unicode/wince/UnicodeWinCE.h:

2011-06-23  Ryuan Choi  <ryuan.choi@samsung.com>

        Reviewed by Andreas Kling.

        [EFL][WK2] Add PLATFORM(EFL) to use UNIX_DOMAIN_SOCKETS.
        https://bugs.webkit.org/show_bug.cgi?id=63228

        * wtf/Platform.h: Add PLATFORM(EFL) guard.

2011-06-23  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r89547.
        http://trac.webkit.org/changeset/89547
        https://bugs.webkit.org/show_bug.cgi?id=63252

        "Chrmium crash on start" (Requested by yurys on #webkit).

        * wtf/DynamicAnnotations.cpp:
        (WTFAnnotateBenignRaceSized):
        (WTFAnnotateHappensBefore):
        (WTFAnnotateHappensAfter):
        * wtf/DynamicAnnotations.h:

2011-06-23  Timur Iskhodzhanov  <timurrrr@google.com>

        Reviewed by David Levin.

        Make dynamic annotations weak symbols and prevent identical code folding by the linker
        https://bugs.webkit.org/show_bug.cgi?id=62443

        * wtf/DynamicAnnotations.cpp:
        (WTFAnnotateBenignRaceSized):
        (WTFAnnotateHappensBefore):
        (WTFAnnotateHappensAfter):
        * wtf/DynamicAnnotations.h:

2011-06-22  Yael Aharon  <yael.aharon@nokia.com>

        Reviewed by Andreas Kling.

        [Qt] Add a build flag for building with libxml2 and libxslt.
        https://bugs.webkit.org/show_bug.cgi?id=63113

        * wtf/Platform.h:

2011-06-22  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r89489.
        http://trac.webkit.org/changeset/89489
        https://bugs.webkit.org/show_bug.cgi?id=63203

        Broke chromium mac build on build.webkit.org (Requested by
        abarth on #webkit).

        * wtf/Platform.h:

2011-06-22  Cary Clark  <caryclark@google.com>

        Reviewed by Darin Fisher.

        Use Skia if Skia on Mac Chrome is enabled
        https://bugs.webkit.org/show_bug.cgi?id=62999

        * wtf/Platform.h:
        Add switch to use Skia if, externally,
        Skia has been enabled by a gyp define.

2011-06-22  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        * interpreter/RegisterFile.h: Removed unnecessary #include <stdio.h>.

2011-06-22  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed the conceit that global variables are local variables when running global code
        https://bugs.webkit.org/show_bug.cgi?id=63106
        
        This is required for write barrier correctness.
        
        SunSpider reports about a 0.5% regression, mostly from bitops-bitwise-and.js.
        I was able to reduce the regression with a tiny peephole optimization in
        the bytecompiler, but not eliminate it. I'm committing this assuming
        that turning on generational GC will win back at least 0.5%.

        (FWIW, the DFG JIT can easily eliminate any regression by sharing loads of
        the global object's var storage. I considered doing the same kind of
        optimization in the existing JIT, but it seemed like moving in the wrong
        direction.)

        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addGlobalVar):
        (JSC::BytecodeGenerator::BytecodeGenerator): Don't give global variables
        negative indices, since they're no longer negatively offset from the
        current stack frame.
        
        Do give global variables monotonically increasing positive indices, since
        that's much easier to work with.
        
        Don't limit the number of optimizable global variables, since it's no
        longer limited by the register file, since they're no longer stored in
        the register file.

        (JSC::BytecodeGenerator::registerFor): Global code never has any local
        registers because a var in global code is actually a property of the
        global object.

        (JSC::BytecodeGenerator::constRegisterFor): Ditto.

        (JSC::BytecodeGenerator::emitResolve): Did a tiny bit of constant
        propagation and dead code elimination to speed up our compiles and
        reduce WTFs / minute.

        * bytecompiler/BytecodeGenerator.h:
        (JSC::BytecodeGenerator::registerFor): Removed special handling of globals.

        (JSC::BytecodeGenerator::shouldOptimizeLocals): Don't optimize locals in
        global code, since there are none.

        (JSC::BytecodeGenerator::canOptimizeNonLocals): Do optimize non-locals
        in global code (i.e., global vars), since there are some.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::callEval):
        (JSC::Interpreter::Interpreter):
        (JSC::Interpreter::dumpRegisters):
        (JSC::Interpreter::execute):
        * interpreter/Interpreter.h: Updated for deleted / renamed code.

        * interpreter/RegisterFile.cpp:
        (JSC::RegisterFile::gatherConservativeRoots):
        (JSC::RegisterFile::releaseExcessCapacity): Updated for deleted / renamed
        data members.

        * interpreter/RegisterFile.h:
        (JSC::RegisterFile::begin):
        (JSC::RegisterFile::size):
        (JSC::RegisterFile::RegisterFile):
        (JSC::RegisterFile::shrink): Removed all code and comments dealing with
        global variables stored in the register file.

        (JSC::RegisterFile::grow): Updated for same.
        
        Also, a slight correctness fix: Test the VM commit end, and not just the
        in-use end, when checking for stack overflow. In theory, it's invalid to
        commit past the end of your allocation, even if you never touch that
        memory. This makes the usable size of the stack slightly smaller. No test
        because we don't know of any case in practice where this crashes.

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData): Updated for changes above.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::resizeRegisters):
        (JSC::JSGlobalObject::addStaticGlobals):
        * runtime/JSGlobalObject.h: Simplified globals to have monotonically 
        increasing indexes, always located in our external storage.

2011-06-21  MORITA Hajime  <morrita@google.com>

        Unreviewed, rolling out r89401 and r89403.
        http://trac.webkit.org/changeset/89401
        http://trac.webkit.org/changeset/89403
        https://bugs.webkit.org/show_bug.cgi?id=62970

        Breaks mac build and mistakenly enables the spellcheck API

        * Configurations/FeatureDefines.xcconfig:
        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-06-21  Kent Tamura  <tkent@chromium.org>

        [Mac] Sort Xcode project files.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-06-20  MORITA Hajime  <morrita@google.com>

        Reviewed by Kent Tamura.

        Spellcheck API should be build-able.
        https://bugs.webkit.org/show_bug.cgi?id=62970

        No new tests, changing only build related files
        
        * Configurations/FeatureDefines.xcconfig:

2011-06-21  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Moved 'const' off the global-variable-as-local-variable crack pipe
        https://bugs.webkit.org/show_bug.cgi?id=63105
        
        This is necessary for moving the rest of the code off of same.
        
        Many problems remain in our handling of const. I have fixed none of them.

        * bytecompiler/BytecodeGenerator.h:
        (JSC::BytecodeGenerator::scopeChain): New accessor, needed to enable
        const to directly implement its unique scoping rules.

        * bytecompiler/NodesCodegen.cpp:
        (JSC::PrefixResolveNode::emitBytecode): Do specify that our resolve is
        for writing, so we don't overwrite const variables.

        (JSC::ConstDeclNode::emitCodeSingle): Don't assume that all declared const
        variables are available as local variables, since this won't be the case
        once global variables are not available as local variables. Instead, use
        put_scoped_var in the case where there is no local variable. Like a local
        variable, put_scoped_var succeeds even though const properties are
        read-only, since put_scoped_var skips read-only checks. (Yay?)

2011-06-21  Oliver Hunt  <oliver@apple.com>

        Reviewed by Alexey Proskuryakov.

        REGRESSION(r89257): It broke 2 jscore tests (Requested by Ossy_away on #webkit).
        https://bugs.webkit.org/show_bug.cgi?id=63052

        Release mode only failure, the stack overflow guards were getting there error
        handling inlined, so that they were essentially causing their own demise.

        * parser/JSParser.cpp:
        (JSC::JSParser::updateErrorMessage):
        (JSC::JSParser::updateErrorWithNameAndMessage):

2011-06-20  Kenneth Russell  <kbr@google.com>

        Unreviewed.

        Rolled out r89233 and r89235 because of crashes in http/tests/misc/acid3.html on Snow Leopard and other platforms
        https://bugs.webkit.org/show_bug.cgi?id=63022

        * wtf/Platform.h:

2011-06-18  Anders Carlsson  <andersca@apple.com>

        Reviewed by Darin Adler.

        Disallow assigning into PassOwnArrayPtr, PassOwnPtr and PassRefPtr
        https://bugs.webkit.org/show_bug.cgi?id=62940

        Remove clear() and all assignment operators except one which now has a COMPILE_ASSERT.

        * wtf/PassOwnArrayPtr.h:
        (WTF::PassOwnArrayPtr::operator=):
        * wtf/PassOwnPtr.h:
        (WTF::PassOwnPtr::operator=):
        * wtf/PassRefPtr.h:
        (WTF::PassRefPtr::operator=):
        (WTF::NonNullPassRefPtr::operator=):

2011-06-20  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        REGRESSION (r79060): Searching for a flight at united.com fails
        https://bugs.webkit.org/show_bug.cgi?id=63003

        This original change also broke Twitter, and we attempted to refine the fix to 
        address that problem (http://trac.webkit.org/changeset/80542), but since it still breaks United,
        we need to revert the change until we understand the problem better.

        * wtf/DateMath.cpp:
        (WTF::parseDateFromNullTerminatedCharacters):

2011-06-20  Juan C. Montemayor  <jmont@apple.com>

        Reviewed by Oliver Hunt.

        No context for javascript parse errors.
        https://bugs.webkit.org/show_bug.cgi?id=62613
        
        Parse errors now show more details like:
        "Unexpected token: ]"
        or
        "Expected token: while"
        
        For reserved names, numbers, indentifiers, strings, lexer errors, 
        and EOFs, the following error messages are printed:
        
        "Use of reserved word: super"
        "Unexpected number: 42"
        "Unexpected identifier: "
        "Unexpected string: "foobar""
        "Invalid token character sequence: \u4023"
        "Unexpected EOF"

        * parser/JSParser.cpp:
        (JSC::JSParser::consume):
        (JSC::JSParser::getToken):
        (JSC::JSParser::getTokenName):
        (JSC::JSParser::updateErrorMessageSpecialCase):
        (JSC::JSParser::updateErrorMessage):
        (JSC::JSParser::updateErrorWithNameAndMessage):
        (JSC::jsParse):
        (JSC::JSParser::JSParser):
        (JSC::JSParser::parseProgram):
        (JSC::JSParser::parseVarDeclarationList):
        (JSC::JSParser::parseForStatement):
        (JSC::JSParser::parseBreakStatement):
        (JSC::JSParser::parseContinueStatement):
        (JSC::JSParser::parseWithStatement):
        (JSC::JSParser::parseTryStatement):
        (JSC::JSParser::parseStatement):
        (JSC::JSParser::parseFormalParameters):
        (JSC::JSParser::parseFunctionInfo):
        (JSC::JSParser::parseAssignmentExpression):
        (JSC::JSParser::parsePrimaryExpression):
        (JSC::JSParser::parseMemberExpression):
        (JSC::JSParser::parseUnaryExpression):
        * parser/JSParser.h:
        * parser/Lexer.cpp:
        (JSC::Lexer::lex):
        * parser/Parser.cpp:
        (JSC::Parser::parse):

2011-06-20  Nikolas Zimmermann  <nzimmermann@rim.com>

        Reviewed by Rob Buis.

        Integrate SVG Fonts within GlyphPage concept, removing the special SVG code paths from Font, making it possible to reuse the simple text code path for SVG Fonts
        https://bugs.webkit.org/show_bug.cgi?id=59085

        * wtf/Platform.h: Force Qt-EWS into a full rebuild, otherwhise this patch breaks the EWS.

2011-06-19  Oliver Hunt  <oliver@apple.com>

        Reviewed by Sam Weinig.

        Correct logic for putting errors on the correct line when handling JSONP
        https://bugs.webkit.org/show_bug.cgi?id=62962

        Minor fix for the minor fix.  *sigh*

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):

2011-06-19  Oliver Hunt  <oliver@apple.com>

        Minor fix to correct layout test results.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):

2011-06-17  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        JSONP is unnecessarily slow
        https://bugs.webkit.org/show_bug.cgi?id=62920

        JSONP has unfortunately become a fairly common idiom online, yet
        it triggers very poor performance in JSC as we end up doing codegen
        for a large number of property accesses that will
           * only be run once, so the vast amount of logic we dump to handle
             caching of accesses is unnecessary.
           * We are doing codegen that is directly proportional to just
             creating the object in the first place.

        This patch extends the use of the literal parser to JSONP-like structures
        in global code, handling a number of different forms I have seen online.
        In an extreme case this improves performance of JSONP by more than 2x
        due to removal of code generation and execution time, and a few optimisations
        that I made to the parser itself.

        * API/JSValueRef.cpp:
        (JSValueMakeFromJSONString):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::callEval):
        (JSC::Interpreter::execute):
        * parser/Lexer.cpp:
        (JSC::Lexer::isKeyword):
        * parser/Lexer.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncEval):
        * runtime/JSONObject.cpp:
        (JSC::JSONProtoFuncParse):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::tryJSONPParse):
        (JSC::LiteralParser::makeIdentifier):
        (JSC::LiteralParser::Lexer::lex):
        (JSC::LiteralParser::Lexer::next):
        (JSC::isSafeStringCharacter):
        (JSC::LiteralParser::Lexer::lexString):
        (JSC::LiteralParser::Lexer::lexNumber):
        (JSC::LiteralParser::parse):
        * runtime/LiteralParser.h:
        (JSC::LiteralParser::LiteralParser):
        (JSC::LiteralParser::tryLiteralParse):
        (JSC::LiteralParser::Lexer::Lexer):

2011-06-18  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r89184.
        http://trac.webkit.org/changeset/89184
        https://bugs.webkit.org/show_bug.cgi?id=62927

        It broke 22 tests on all bot (Requested by Ossy_weekend on
        #webkit).

        * API/JSValueRef.cpp:
        (JSValueMakeFromJSONString):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::callEval):
        (JSC::Interpreter::execute):
        * parser/Lexer.cpp:
        * parser/Lexer.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncEval):
        * runtime/JSONObject.cpp:
        (JSC::JSONProtoFuncParse):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::Lexer::lex):
        (JSC::isSafeStringCharacter):
        (JSC::LiteralParser::Lexer::lexString):
        (JSC::LiteralParser::Lexer::lexNumber):
        (JSC::LiteralParser::parse):
        * runtime/LiteralParser.h:
        (JSC::LiteralParser::LiteralParser):
        (JSC::LiteralParser::tryLiteralParse):
        (JSC::LiteralParser::Lexer::Lexer):
        (JSC::LiteralParser::Lexer::next):

2011-06-17  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        JSONP is unnecessarily slow
        https://bugs.webkit.org/show_bug.cgi?id=62920

        JSONP has unfortunately become a fairly common idiom online, yet
        it triggers very poor performance in JSC as we end up doing codegen
        for a large number of property accesses that will
           * only be run once, so the vast amount of logic we dump to handle
             caching of accesses is unnecessary.
           * We are doing codegen that is directly proportional to just
             creating the object in the first place.

        This patch extends the use of the literal parser to JSONP-like structures
        in global code, handling a number of different forms I have seen online.
        In an extreme case this improves performance of JSONP by more than 2x
        due to removal of code generation and execution time, and a few optimisations
        that I made to the parser itself.

        * API/JSValueRef.cpp:
        (JSValueMakeFromJSONString):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::callEval):
        (JSC::Interpreter::execute):
        * parser/Lexer.cpp:
        (JSC::Lexer::isKeyword):
        * parser/Lexer.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncEval):
        * runtime/JSONObject.cpp:
        (JSC::JSONProtoFuncParse):
        * runtime/LiteralParser.cpp:
        (JSC::LiteralParser::tryJSONPParse):
        (JSC::LiteralParser::makeIdentifier):
        (JSC::LiteralParser::Lexer::lex):
        (JSC::LiteralParser::Lexer::next):
        (JSC::isSafeStringCharacter):
        (JSC::LiteralParser::Lexer::lexString):
        (JSC::LiteralParser::Lexer::lexNumber):
        (JSC::LiteralParser::parse):
        * runtime/LiteralParser.h:
        (JSC::LiteralParser::LiteralParser):
        (JSC::LiteralParser::tryLiteralParse):
        (JSC::LiteralParser::Lexer::Lexer):

2011-06-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Moved some property access JIT code into property access JIT files
        https://bugs.webkit.org/show_bug.cgi?id=62906

        * jit/JITOpcodes.cpp:
        * jit/JITOpcodes32_64.cpp:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emitSlow_op_put_by_val):
        (JSC::JIT::emit_op_get_scoped_var):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_get_global_var):
        (JSC::JIT::emit_op_put_global_var):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_get_scoped_var):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_get_global_var):
        (JSC::JIT::emit_op_put_global_var):

2011-06-17  Anders Carlsson  <andersca@apple.com>

        Build fix.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-06-17  Geoffrey Garen  <ggaren@apple.com>

        Try to fix the Leopard build?

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-06-16  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Added some write barrier action, compiled out by default
        https://bugs.webkit.org/show_bug.cgi?id=62844

        * JavaScriptCore.exp: Build!

        * JavaScriptCore.xcodeproj/project.pbxproj: Fixed an incremental build
        issue with Heap.cpp.

        * heap/Heap.cpp:
        (JSC::Heap::writeBarrierSlowCase):
        * heap/Heap.h:
        (JSC::Heap::writeBarrier):
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::isAtomAligned):
        (JSC::MarkedBlock::blockFor):
        (JSC::MarkedBlock::atomNumber):
        (JSC::MarkedBlock::ownerSetNumber):
        (JSC::MarkedBlock::addOldSpaceOwner):
        (JSC::MarkedBlock::OwnerSet::OwnerSet):
        (JSC::MarkedBlock::OwnerSet::add):
        (JSC::MarkedBlock::OwnerSet::clear):
        (JSC::MarkedBlock::OwnerSet::size):
        (JSC::MarkedBlock::OwnerSet::didOverflow):
        (JSC::MarkedBlock::OwnerSet::owners): Added a basic write barrier that
        tracks owners for regions within blocks. Currently unused.

2011-06-17  Raphael Kubo da Costa  <kubo@profusion.mobi>

        Reviewed by Eric Seidel.

        [EFL] Add some OwnPtr specializations for EFL types.
        For now there are specializations for Ecore_Evas and Evas_Object.
        https://bugs.webkit.org/show_bug.cgi?id=62877

        * wtf/CMakeListsEfl.txt:
        * wtf/OwnPtrCommon.h:
        * wtf/efl/OwnPtrEfl.cpp: Added.
        (WTF::deleteOwnedPtr):

2011-06-17  Joone Hur  <joone.hur@collabora.co.uk>

        Reviewed by Martin Robinson.

        [GTK] Replace GdkRectangle by cairo_rectangle_int_t
        https://bugs.webkit.org/show_bug.cgi?id=60687

        Replace GdkRectangle by cairo_rectangle_int_t.

        * wtf/gobject/GTypedefs.h: Replace GdkRectangle by cairo_rectangle_int_t.

2011-06-16  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=53014
        ES5 strict mode keyword restrictions aren't implemented

        The following are future restricted words is strict mode code:
            implements, interface, let, package, private, protected, public, static, yield

        * parser/JSParser.h:
            - Add RESERVED_IF_STRICT token.
        * parser/Keywords.table:
            - Add new future restricted words.
        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):
            - Check for RESERVED_IF_STRICT; in nonstrict code this is converted to IDENT.
        (JSC::Lexer::lex):
            - Pass strictMode flag to parseIdentifier.
        * parser/Lexer.h:
            - parseIdentifier needs a strictMode flag.
        * runtime/CommonIdentifiers.h:
            - Add identifiers for new reserved words.

2011-06-16  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=23611
        Multiline Javascript comments cause incorrect parsing of following script.

        From the spec:
        "A MultiLineComment [is] simply discarded if it contains no line terminator,
        but if a MultiLineComment contains one or more line terminators, then it is
        replaced with a single line terminator, which becomes part of the stream of
        inputs for the syntactic grammar." 

        This may result in behavioural changes, due to automatic semicolon insertion.

        * parser/Lexer.cpp:
        (JSC::Lexer::parseMultilineComment):
            - Set m_terminator is we see a line terminator in a multiline comment.

2011-06-16  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=62824
        DFG JIT - add support for branch-fusion of compareEq, JSValue comparisons in SpeculativeJIT

        CompareEq of non-integer values is the most common cause of speculation failure.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compilePeepHoleIntegerBranch):
            - Support Equals.
        (JSC::DFG::SpeculativeJIT::compilePeepHoleEq):
            - new! - peephole optimized Eq of JSValues.
        (JSC::DFG::SpeculativeJIT::compile):
            - Add peephole optimization for CompareEq.
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::detectPeepHoleBranch):
            - Add support for dead nodes between compare & branch.
        (JSC::DFG::SpeculativeJIT::isInteger):
            - Added to determine which form of peephole to do in CompareEq.

2011-06-16  Geoffrey Garen  <ggaren@apple.com>

        Try to fix the Windows build.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Export another
        symbol.

        * bytecode/EvalCodeCache.h:
        * heap/HandleHeap.h:
        * heap/HeapRootVisitor.h:
        * heap/NewSpace.h:
        * runtime/ArgList.h:
        * runtime/ScopeChain.h:
        * runtime/SmallStrings.h:
        * runtime/Structure.h: Stop forward-declaring things that don't really
        exist anymore.

2011-06-16  Geoffrey Garen  <ggaren@apple.com>

        Try to fix the Mac build: Removed and re-added SlotVisitor.h to the Xcode
        project while crossing my fingers and facing west.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-06-16  Geoffrey Garen  <ggaren@apple.com>

        Build fix: Removed an incorrect symbol on Windows.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-06-16  Geoffrey Garen  <ggaren@apple.com>

        Build fix: Removed an accidental commit from the future.

        * CMakeLists.txt:

2011-06-16  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Introduced SlotVisitor into the project
        https://bugs.webkit.org/show_bug.cgi?id=62820
        
        This resolves a class vs typedef forward declaration issue, and gives all
        exported symbols the correct names.

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.xcodeproj/project.pbxproj: Build!

        * bytecode/EvalCodeCache.h:
        * heap/HandleHeap.h:
        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::markRoots):
        * heap/Heap.h:
        * heap/HeapRootVisitor.h: Replaced MarkStack with SlotVisitor. Now no
        clients operate on a MarkStack.

        * heap/MarkStack.cpp:
        (JSC::SlotVisitor::visitChildren):
        (JSC::SlotVisitor::drain):
        * heap/SlotVisitor.h: Added.
        (JSC::SlotVisitor::SlotVisitor): Used 'protected' and a little cheesy
        inheritance to give SlotVisitor all the attributes of MarkStack without
        making this change giant. Over time, we will move more behavior into
        SlotVisitor and its subclasses.

        * heap/MarkStack.h:
        * heap/NewSpace.h: Replaced MarkStack with SlotVisitor. Now no
        clients operate on a MarkStack.

        * runtime/ArgList.h:
        * runtime/JSCell.h:
        * runtime/JSObject.h:
        * runtime/ScopeChain.h:
        * runtime/SmallStrings.h:
        * runtime/Structure.h: Replaced MarkStack with SlotVisitor. Now no
        clients operate on a MarkStack.

2011-06-15  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Reduce memory usage of resolve_global
        https://bugs.webkit.org/show_bug.cgi?id=62765

        If we have a large number of resolve_globals in a single
        block start planting plain resolve instructions instead 
        whenever we aren't in a loop.  This allows us to reduce
        the code size for extremely large functions without
        losing the performance benefits of op_resolve_global.

        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::globalResolveInfoCount):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::shouldAvoidResolveGlobal):
        (JSC::BytecodeGenerator::emitResolve):
        (JSC::BytecodeGenerator::emitResolveWithBase):
        * bytecompiler/BytecodeGenerator.h:

2011-06-16  Qi Zhang  <qi.2.zhang@nokia.com>

        Reviewed by Laszlo Gombos.

        [Qt] Fix building with CONFIG(use_system_icu)
        https://bugs.webkit.org/show_bug.cgi?id=62744

        Do not define WTF_USE_QT4_UNICODE if WTF_USE_ICU_UNICODE is set.

        * wtf/Platform.h:

2011-06-15  Darin Adler  <darin@apple.com>

        Reviewed by Adam Barth.

        Remove obsolete LOOSE_OWN_PTR code
        https://bugs.webkit.org/show_bug.cgi?id=59909

        The internal Apple dependency on this is gone now.

        * wtf/OwnArrayPtr.h: Removed constructor that takes a raw pointer,
        set function that takes a raw pointer.

        * wtf/OwnPtr.h: Removed constructor that takes a raw pointer,
        set functino that takes a raw pointer.

        * wtf/PassOwnArrayPtr.h: Made constructor that takes a nullptr
        and assignment operator that takes a nullptr unconditional.
        Made constructor that takes a raw pointer private and explicit,
        and removed assignment operator that takes a raw pointer.

        * wtf/PassOwnPtr.h: Made assignment operator that takes a nullptr
        unconditional. Made constructor that takes a raw pointer private
        and explicit, and removed assignment operator that takes a raw pointer.

2011-06-15  Sam Weinig  <sam@webkit.org>

        Reviewed by Geoffrey Garen and Gavin Barraclough.

        Make access-nseive ~9x faster on the non-speculative path by
        adding special casing for doubles that can lossless-ly be converted
        to a uint32_t in getByVal and putByVal. This avoids calls to stringification
        and the hash lookup.  Long term, we should try and get property of a getByVal
        and putByVal to be an integer immediate even in the non-speculative path.

        * dfg/DFGOperations.cpp:
        (JSC::DFG::putByVal):
        (JSC::DFG::operationPutByValInternal):

2011-06-15  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        REGRESSION (r88719): 5by5.tv schedule is not visible
        https://bugs.webkit.org/show_bug.cgi?id=62720

        Problem here is that the lexer wasn't considering '$' to be
        a valid character in an identifier.

        * parser/Lexer.h:
        (JSC::Lexer::lexExpectIdentifier):

2011-06-15  Oliver Hunt  <oliver@apple.com>

        Reviewed by Sam Weinig.

        Reduce the size of global_resolve
        https://bugs.webkit.org/show_bug.cgi?id=62738

        Reduce the code size of global_resolve in the JIT by replacing
        multiple pointer loads with a single pointer move + two offset
        loads.

        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_resolve_global):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_resolve_global):

2011-06-14  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Dan Bernstein.

        Fixed an inavlid ASSERT I found while investigating
        <rdar://problem/9580254> Crash in JSC::HandleHeap::finalizeWeakHandles + 92
        https://bugs.webkit.org/show_bug.cgi?id=62699        

        No test since we don't know of a way to get WebCore to deallocate the
        next-to-finalize handle, which is also the last handle in the list,
        while finalizing the second-to-last handle in the list.

        * heap/HandleHeap.h:
        (JSC::HandleHeap::deallocate): Don't ASSERT that m_nextToFinalize has a
        non-0 next() after updating it, since it is valid to update m_nextToFinalize
        to point to the tail sentinel.
        
        Do ASSERT that m_nextToFinalize has a non-0 next() before updating it,
        since it is not valid to update m_nextToFinalize to point past the tail
        sentinel.
        
        Also, use m_nextToFinalize consistently for clarity.

2011-06-14  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=43841
        SegmentedVector::operator== typo

        * wtf/SegmentedVector.h:
        (WTF::SegmentedVectorIterator::operator==):
        (WTF::SegmentedVectorIterator::operator!=):

2011-06-14  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Constant array literals result in unnecessarily large amounts of code
        https://bugs.webkit.org/show_bug.cgi?id=62658

        Add a new version of op_new_array that simply copies values from a buffer
        we hang off of the CodeBlock, rather than generating code to place each
        entry into the registerfile, and then copying it from the registerfile into
        the array.  This is a slight improvement on some sunspider tests, but no
        measurable overall change.  That's okay though as our goal was to reduce
        code size without hurting performance.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addImmediateBuffer):
        (JSC::CodeBlock::immediateBuffer):
        * bytecode/Opcode.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addImmediateBuffer):
        (JSC::BytecodeGenerator::emitNewArray):
        * bytecompiler/BytecodeGenerator.h:
        * bytecompiler/NodesCodegen.cpp:
        (JSC::ArrayNode::emitBytecode):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        * jit/JIT.h:
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_new_array):
        (JSC::JIT::emit_op_new_array_buffer):
        * jit/JITOpcodes32_64.cpp:
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JITStubs.h:

2011-06-14  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r88841.
        http://trac.webkit.org/changeset/88841
        https://bugs.webkit.org/show_bug.cgi?id=62672

        Caused many tests to crash (Requested by rniwa on #webkit).

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        * bytecode/CodeBlock.h:
        * bytecode/Opcode.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitNewArray):
        * bytecompiler/BytecodeGenerator.h:
        * bytecompiler/NodesCodegen.cpp:
        (JSC::ArrayNode::emitBytecode):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        * jit/JIT.h:
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_new_array):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_new_array):
        * jit/JITStubs.cpp:
        * jit/JITStubs.h:

2011-06-14  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Constant array literals result in unnecessarily large amounts of code
        https://bugs.webkit.org/show_bug.cgi?id=62658

        Add a new version of op_new_array that simply copies values from a buffer
        we hang off of the CodeBlock, rather than generating code to place each
        entry into the registerfile, and then copying it from the registerfile into
        the array.  This is a slight improvement on some sunspider tests, but no
        measurable overall change.  That's okay though as our goal was to reduce
        code size without hurting performance.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addImmediateBuffer):
        (JSC::CodeBlock::immediateBuffer):
        * bytecode/Opcode.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addImmediateBuffer):
        (JSC::BytecodeGenerator::emitNewArray):
        * bytecompiler/BytecodeGenerator.h:
        * bytecompiler/NodesCodegen.cpp:
        (JSC::ArrayNode::emitBytecode):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        * jit/JIT.h:
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_new_array):
        (JSC::JIT::emit_op_new_array_buffer):
        * jit/JITOpcodes32_64.cpp:
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JITStubs.h:

2011-06-14  Stephanie Lewis  <slewis@apple.com>

        Rubber stamped by Oliver Hunt.

        <rdar://problem/9511169>
        Update order files.

        * JavaScriptCore.order:

2011-06-14  Sam Weinig  <sam@webkit.org>

        Reviewed by Geoffrey Garen.

        Fix dumping of constants to have the correct constant number.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):

2011-06-14  Benjamin Poulain  <benjamin@webkit.org>

        Reviewed by Eric Seidel.

        KeywordLookupGenerator's Trie does not work with Python 3
        https://bugs.webkit.org/show_bug.cgi?id=62635

        With Python 3, dict.items() return an iterator. Since the iterator
        protocol changed between Python 2 and 3, the easiest way to get the
        values is to have something that use the iterator implicitely, like a
        for() loop.

        * KeywordLookupGenerator.py:

2011-06-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Fix llocp and lvalp names in the lexer to something more meaningful
        https://bugs.webkit.org/show_bug.cgi?id=62605

        A simple rename

        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):
        (JSC::Lexer::parseString):
        (JSC::Lexer::lex):
        * parser/Lexer.h:
        (JSC::Lexer::lexExpectIdentifier):

2011-06-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make it possible to inline the common case of identifier lexing
        https://bugs.webkit.org/show_bug.cgi?id=62600

        Add a lexing function that expects to lex an "normal" alpha numeric
        identifier (that ignores keywords) so it's possible to inline the
        common parsing cases.  This comes out as a reasonable parsing speed
        boost.

        * parser/JSParser.cpp:
        (JSC::JSParser::nextExpectIdentifier):
        (JSC::JSParser::parseProperty):
        (JSC::JSParser::parseMemberExpression):
        * parser/Lexer.cpp:
        * parser/Lexer.h:
        (JSC::Lexer::makeIdentifier):
        (JSC::Lexer::lexExpectIdentifier):

2011-06-13  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Martin Robinson.

        Distcheck fixes.

        * GNUmakefile.am:
        * GNUmakefile.list.am:

2011-06-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Simon Fraser.

        Make it possible to inline Identifier::equal
        https://bugs.webkit.org/show_bug.cgi?id=62584

        Move Identifier::equal to the Identifier header file.

        * runtime/Identifier.cpp:
        * runtime/Identifier.h:
        (JSC::Identifier::equal):

2011-06-13  Tony Chang  <tony@chromium.org>

        Reviewed by Dimitri Glazkov.

        rename ENABLE_NEW_FLEXBOX to ENABLE_CSS3_FLEXBOX
        https://bugs.webkit.org/show_bug.cgi?id=62578

        * Configurations/FeatureDefines.xcconfig:

2011-06-13  Tony Chang  <tony@chromium.org>

        Reviewed by Adam Barth.

        rename ENABLE_FLEXBOX to ENABLE_NEW_FLEXBOX
        https://bugs.webkit.org/show_bug.cgi?id=62545

        * Configurations/FeatureDefines.xcconfig:

2011-06-12  Patrick Gansterer  <paroga@webkit.org>

        Unreviewed. Build fix for !ENABLE(JIT) after r88604.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):

2011-06-11  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=16777

        Remove #define NaN per Darin's comments.

        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::parseIntOverflow):
        (JSC::parseInt):
        (JSC::jsStrDecimalLiteral):
        (JSC::jsToNumber):
        (JSC::parseFloat):
        * wtf/DateMath.cpp:
        (WTF::equivalentYearForDST):
        (WTF::parseES5DateFromNullTerminatedCharacters):
        (WTF::parseDateFromNullTerminatedCharacters):
        (WTF::timeClip):
        (JSC::parseDateFromNullTerminatedCharacters):

2011-06-11  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=62503
        Remove JIT_OPTIMIZE_* switches

        The alternative code paths are untested, and not well maintained.
        These were useful when there was more churn in the JIT, but now
        are a maintenance overhead. Time to move on, removing.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileSlowCases):
        (JSC::JIT::privateCompile):
        (JSC::JIT::linkConstruct):
        * jit/JIT.h:
        * jit/JITCall.cpp:
        * jit/JITCall32_64.cpp:
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::softModulo):
        * jit/JITPropertyAccess.cpp:
        * jit/JITPropertyAccess32_64.cpp:
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/Lookup.cpp:
        (JSC::setUpStaticFunctionSlot):
        * runtime/Lookup.h:
        * wtf/Platform.h:

2011-06-10  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=16777
        Eliminate JSC::NaN and JSC::Inf

        There's no good reason for -K-J-S- JSC to have its own NAN and infinity constants.
        The ones in std::numeric_limits are perfectly good.
        Remove JSC::Inf, JSC::NaN, switch some cases of (isnan || isinf) to !isfinite.

        * API/JSCallbackObjectFunctions.h:
        (JSC::::toNumber):
        * API/JSValueRef.cpp:
        (JSValueMakeNumber):
        (JSValueToNumber):
        * JavaScriptCore.exp:
        * runtime/CachedTranscendentalFunction.h:
        (JSC::CachedTranscendentalFunction::initialize):
        * runtime/DateConstructor.cpp:
        (JSC::constructDate):
        * runtime/DateInstanceCache.h:
        (JSC::DateInstanceData::DateInstanceData):
        (JSC::DateInstanceCache::reset):
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::getPrimitiveNumber):
        (JSC::JSCell::JSValue::toNumber):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::resetDateCache):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncParseInt):
        (JSC::globalFuncIsFinite):
        * runtime/JSNotAnObject.cpp:
        (JSC::JSNotAnObject::toNumber):
        * runtime/JSValue.cpp:
        * runtime/JSValue.h:
        * runtime/JSValueInlineMethods.h:
        (JSC::jsNaN):
        * runtime/MathObject.cpp:
        (JSC::mathProtoFuncMax):
        (JSC::mathProtoFuncMin):
        * runtime/NumberConstructor.cpp:
        (JSC::numberConstructorNegInfinity):
        (JSC::numberConstructorPosInfinity):
        * runtime/NumberPrototype.cpp:
        (JSC::numberProtoFuncToExponential):
        (JSC::numberProtoFuncToFixed):
        (JSC::numberProtoFuncToPrecision):
        (JSC::numberProtoFuncToString):
        * runtime/UString.cpp:
        * wtf/DecimalNumber.h:
        (WTF::DecimalNumber::DecimalNumber):
        * wtf/dtoa.cpp:
        (WTF::dtoa):

2011-06-10  Tony Chang  <tony@chromium.org>

        Reviewed by Ojan Vafai.

        add a compile guard ENABLE(FLEXBOX)
        https://bugs.webkit.org/show_bug.cgi?id=62049

        * Configurations/FeatureDefines.xcconfig:

2011-06-10  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=55347
        "name" and "message" enumerable on *Error.prototype

        This arises from chapter 15 of the spec:
            "Every other property described in this clause has the attributes
            { [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true }
            unless otherwise specified."
        Standardized properties are not enumerable.

        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::ErrorInstance):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):

2011-06-09  Geoffrey Garen  <ggaren@apple.com>

        Build fix: Corrected header spelling.

        * heap/OldSpace.h:

2011-06-09  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Added OldSpace to the project
        https://bugs.webkit.org/show_bug.cgi?id=62417
        
        Currently unused.
        
        Added OldSpace, the ability to iterate NewSpace vs OldSpace, and a
        per-block flag for testing whether you're in NewSpace vs OldSpace.

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj: Build!

        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::inNewSpace):
        (JSC::MarkedBlock::setInNewSpace): Added inNewSpace flag, for use in
        write barrier.

        * heap/NewSpace.cpp:
        (JSC::NewSpace::addBlock):
        (JSC::NewSpace::removeBlock):
        * heap/NewSpace.h:
        (JSC::NewSpace::forEachBlock): Added forEachBlock, to use for
        NewSpace-specific operations.

        * heap/OldSpace.cpp: Added.
        (JSC::OldSpace::OldSpace):
        (JSC::OldSpace::addBlock):
        (JSC::OldSpace::removeBlock):
        * heap/OldSpace.h: Added.
        (JSC::OldSpace::forEachBlock): New class for holding promoted blocks.
        Not in use yet.

2011-06-09  Hyowon Kim  <hw1008.kim@samsung.com>

        Reviewed by Antonio Gomes.

        [EFL] Make accelerated compositing build in Webkit-EFL
        https://bugs.webkit.org/show_bug.cgi?id=62361

        Add PLATFORM(EFL) to enable ACCELERATED_COMPOSITING on EFL port.

        * wtf/Platform.h:

2011-06-09  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        Bug 62405 - Fix integer overflow in Array.prototype.push

        Fix geoff's review comments re static_cast.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncPush):

2011-06-09  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Factored MarkedBlock set management into a helper class with a fast case Bloom filter
        https://bugs.webkit.org/show_bug.cgi?id=62413
        
        SunSpider reports a small speedup.
        
        This is in preparation for having ConservativeSet operate on arbitrary
        sets of MarkedBlocks, and in preparation for conservative scanning
        becoming proportionally more important than other GC activities.

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.xcodeproj/project.pbxproj: Build-o.

        * heap/ConservativeRoots.cpp:
        (JSC::ConservativeRoots::add):
        * heap/ConservativeRoots.h:
        (JSC::ConservativeRoots::ConservativeRoots): Operate on a MarkedBlockSet
        directly, instead of a Heap, so we can operate on subsets of the Heap
        instead.
        
        Use a TinyBloomFilter for single-cycle exclusion of most pointers. This
        is particularly important since we expect not to find our subject pointer
        in the MarkedBlock hash, and hash misses are more expensive than typical
        hash lookups because they have high collision rates.
        
        No need for single-pointer add() to be public anymore, since nobody uses it.

        * heap/Heap.cpp:
        (JSC::Heap::markRoots):
        * heap/Heap.h:
        (JSC::Heap::forEachCell):
        (JSC::Heap::forEachBlock): Use MarkedBlockSet since that's what
        ConservativeRoots relies on.
        
        Nixed contains(), since nobody uses it anymore.

        * heap/MarkedBlock.h:
        (WTF::MarkedBlockHash::hash): Added a faster hash taking advantage of
        the VM layout properties of MarkedBlocks.

        * heap/MarkedBlockSet.h: Added.
        (JSC::MarkedBlockSet::add):
        (JSC::MarkedBlockSet::remove):
        (JSC::MarkedBlockSet::recomputeFilter):
        (JSC::MarkedBlockSet::filter):
        (JSC::MarkedBlockSet::set):
        * heap/TinyBloomFilter.h: Added.
        (JSC::TinyBloomFilter::TinyBloomFilter):
        (JSC::TinyBloomFilter::add):
        (JSC::TinyBloomFilter::ruleOut): New helper class, used above.

        * interpreter/RegisterFile.cpp:
        (JSC::RegisterFile::gatherConservativeRoots): No need to specifically
        exclude values by tag -- the tiny bloom filter is already a register-register
        compare, so adding another "rule out" factor just slows things down.

2011-06-09  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 62405 - Fix integer overflow in Array.prototype.push

        There are three integer overflows here, leading to safe (not a security risk)
        but incorrect (non-spec-compliant) behaviour.

        Two overflows occur when calculating the new length after pushing (one in the
        fast version of push in JSArray, one in the generic version in ArrayPrototype).
        The other occurs calculating indices to write to when multiple items are pushed.

        These errors result in three test-262 failures.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncPush):
        * runtime/JSArray.cpp:
        (JSC::JSArray::put):
        (JSC::JSArray::push):

2011-06-09  Dan Bernstein  <mitz@apple.com>

        Reviewed by Anders Carlsson.

        Add Vector::reverse()
        https://bugs.webkit.org/show_bug.cgi?id=62393

        * wtf/Vector.h:
        (WTF::Vector::reverse): Added

2011-06-08  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Factored a bunch of Heap functionality into stand-alone functors
        https://bugs.webkit.org/show_bug.cgi?id=62337
        
        This is in preparation for making these functors operate on arbitrary
        sets of MarkedBlocks.

        * JavaScriptCore.exp: This file is a small tragedy.

        * debugger/Debugger.cpp:
        (JSC::Debugger::recompileAllJSFunctions): Updated for type change and rename.

        * heap/HandleHeap.h:
        (JSC::HandleHeap::forEachStrongHandle): New function for iterating all
        strong handles, so we can play along in the functor game.

        * heap/Heap.cpp:
        (JSC::CountFunctor::CountFunctor::CountFunctor):
        (JSC::CountFunctor::CountFunctor::count):
        (JSC::CountFunctor::CountFunctor::returnValue):
        (JSC::CountFunctor::ClearMarks::operator()):
        (JSC::CountFunctor::ResetAllocator::operator()):
        (JSC::CountFunctor::Sweep::operator()):
        (JSC::CountFunctor::MarkCount::operator()):
        (JSC::CountFunctor::Size::operator()):
        (JSC::CountFunctor::Capacity::operator()):
        (JSC::CountFunctor::Count::operator()):
        (JSC::CountFunctor::CountIfGlobalObject::operator()):
        (JSC::CountFunctor::TakeIfEmpty::TakeIfEmpty):
        (JSC::CountFunctor::TakeIfEmpty::operator()):
        (JSC::CountFunctor::TakeIfEmpty::returnValue):
        (JSC::CountFunctor::RecordType::RecordType):
        (JSC::CountFunctor::RecordType::typeName):
        (JSC::CountFunctor::RecordType::operator()):
        (JSC::CountFunctor::RecordType::returnValue): These functors factor out
        behavior that used to be in the functions below.

        (JSC::Heap::clearMarks):
        (JSC::Heap::sweep):
        (JSC::Heap::objectCount):
        (JSC::Heap::size):
        (JSC::Heap::capacity):
        (JSC::Heap::protectedGlobalObjectCount):
        (JSC::Heap::protectedObjectCount):
        (JSC::Heap::protectedObjectTypeCounts):
        (JSC::Heap::objectTypeCounts):
        (JSC::Heap::resetAllocator):
        (JSC::Heap::freeBlocks):
        (JSC::Heap::shrink): Factored out behavior into the functors above.

        * heap/Heap.h:
        (JSC::Heap::forEachProtectedCell):
        (JSC::Heap::forEachCell):
        (JSC::Heap::forEachBlock): Added forEach* iteration templates. I chose
        functor-based templates instead of plain iterators because they're simpler
        to implement in this case and they require a lot less code at the call site.

        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::VoidFunctor::returnValue): Default parent class for
        trivial functors.

        (JSC::MarkedBlock::forEachCell): Renamed forEach to forEachCell because
        we have a few different kind of "for each" now.

        * runtime/JSGlobalData.cpp:
        (WTF::Recompile::operator()):
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::recompileAllJSFunctions): Updated for type change and rename.

        * runtime/JSGlobalData.h: Removed globalObjectCount because it was unused.

2011-06-08  Mikołaj Małecki  <m.malecki@samsung.com>

        Reviewed by Pavel Feldman.

        Web Inspector: Crash by buffer overrun crash when serializing inspector object tree.
        https://bugs.webkit.org/show_bug.cgi?id=52791

        No new tests. The problem can be reproduced by trying to create InspectorValue
        from 1.0e-100 and call ->toJSONString() on this.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        export 2 functions DecimalNumber::bufferLengthForStringExponential and
        DecimalNumber::toStringExponential.

2011-06-08  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r88404.
        http://trac.webkit.org/changeset/88404
        https://bugs.webkit.org/show_bug.cgi?id=62342

        broke win and mac build (Requested by tony^work on #webkit).

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-06-08  Evan Martin  <evan@chromium.org>

        Reviewed by Adam Barth.

        [chromium] use gyp 'settings' type for settings target
        https://bugs.webkit.org/show_bug.cgi?id=62323

        The 'settings' gyp target type is for targets that exist solely
        for their settings (no build rules).  The comment above this target
        says it's for this, but it incorrectly uses 'none'.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-06-08  Sailesh Agrawal  <sail@chromium.org>

        Reviewed by Mihai Parparita.

        Chromium Mac: Enable overlay scrollbars
        https://bugs.webkit.org/show_bug.cgi?id=59756

        Enable WTF_USE_WK_SCROLLBAR_PAINTER for Chromium Mac. This allows us to use overlay scrollbars on future versions of Mac OS X.

        * wtf/Platform.h:

2011-06-08  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Add faster lookup cache for multi character identifiers
        https://bugs.webkit.org/show_bug.cgi?id=62327

        Add a non-hash lookup for mutiple character identifiers.  This saves us from
        adding repeated identifiers to the ParserArena's identifier list as people
        tend to not start all their variables and properties with the same character
        and happily identifier locality works in our favour.

        * parser/ParserArena.h:
        (JSC::IdentifierArena::isEmpty):
        (JSC::IdentifierArena::clear):
        (JSC::IdentifierArena::makeIdentifier):

2011-06-08  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Took some responsibilities away from NewSpace
        https://bugs.webkit.org/show_bug.cgi?id=62325
        
        NewSpace is basically just an allocator now.
        
        Heap acts as a controller, responsible for managing the set of all
        MarkedBlocks.
        
        This is in preparation for moving parts of the controller logic into
        separate helper classes that can act on arbitrary sets of MarkedBlocks
        that may or may not be in NewSpace.

        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::destroy):
        (JSC::Heap::allocate):
        (JSC::Heap::markRoots):
        (JSC::Heap::clearMarks):
        (JSC::Heap::sweep):
        (JSC::Heap::objectCount):
        (JSC::Heap::size):
        (JSC::Heap::capacity):
        (JSC::Heap::collect):
        (JSC::Heap::resetAllocator):
        (JSC::Heap::allocateBlock):
        (JSC::Heap::freeBlocks):
        (JSC::Heap::shrink): Moved the set of MarkedBlocks from NewSpace to Heap,
        along with all functions that operate on the set of MarkedBlocks. Also
        moved responsibility for deciding whether to allocate a new MarkedBlock,
        and for allocating it.

        * heap/Heap.h:
        (JSC::Heap::contains):
        (JSC::Heap::forEach): Ditto.

        * heap/NewSpace.cpp:
        (JSC::NewSpace::addBlock):
        (JSC::NewSpace::removeBlock):
        (JSC::NewSpace::resetAllocator):
        * heap/NewSpace.h:
        (JSC::NewSpace::waterMark):
        (JSC::NewSpace::allocate): Ditto.

2011-06-08  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Some more MarkedSpace => NewSpace renaming
        https://bugs.webkit.org/show_bug.cgi?id=62305

        * JavaScriptCore.exp:
        * JavaScriptCore.order:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * heap/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::destroy):
        (JSC::Heap::reportExtraMemoryCostSlowCase):
        (JSC::Heap::allocate):
        (JSC::Heap::markRoots):
        (JSC::Heap::objectCount):
        (JSC::Heap::size):
        (JSC::Heap::capacity):
        (JSC::Heap::collect):
        (JSC::Heap::isValidAllocation):
        * heap/Heap.h:
        (JSC::Heap::markedSpace):
        (JSC::Heap::contains):
        (JSC::Heap::forEach):
        (JSC::Heap::allocate):
        * runtime/JSCell.h:

2011-06-08  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Eric Seidel.

        Add export macros to profiler headers.
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * profiler/Profiler.h:

2011-06-08  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Eric Seidel.

        Add export symbols to parser headers.
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * parser/SourceProviderCache.h:

2011-06-08  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Eric Seidel.

        Add export symbols to interpreter headers.
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * interpreter/Interpreter.h:

2011-06-08  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Eric Seidel.

        Add export symbols to debugger headers.
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * debugger/Debugger.h:
        * debugger/DebuggerCallFrame.h:

2011-06-08  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        Moved MarkedSpace.* to NewSpace.* in preparation for more renaming
        https://bugs.webkit.org/show_bug.cgi?id=62268

        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Heap.h:
        * heap/MarkedBlock.h:
        * heap/MarkedSpace.cpp: Removed.
        * heap/MarkedSpace.h: Removed.
        * heap/NewSpace.cpp: Copied from Source/JavaScriptCore/heap/MarkedSpace.cpp.
        * heap/NewSpace.h: Copied from Source/JavaScriptCore/heap/MarkedSpace.h.

2011-06-08  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r88365.
        http://trac.webkit.org/changeset/88365
        https://bugs.webkit.org/show_bug.cgi?id=62301

        windows bots broken (Requested by loislo_ on #webkit).

        * JavaScriptCore.exp:

2011-06-08  Ryan Sleevi  <rsleevi@chromium.org>

        Reviewed by Tony Chang.

        Suppress C++0x compat warnings when compiling Chromium port with GCC 4.6

        Compiling Chromium port under GCC 4.6 produces warnings about nullptr
        https://bugs.webkit.org/show_bug.cgi?id=62242

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-06-08  Ademar de Souza Reis Jr.  <ademar.reis@openbossa.org>

        Reviewed by Andreas Kling.

        Webkit on SPARC Solaris has wrong endian
        https://bugs.webkit.org/show_bug.cgi?id=29407

        Bug 57256 fixed one crash on misaligned reads on sparc/solaris, but
        there are more ocurrences of the same code pattern in webkit.

        This patch includes the check on these other parts of the code.

        This is a speculative fix, I don't have a sparc machine to test and
        don't know which kind of test would trigger a crash (but it's quite
        obvious that it's the same code duplicated in different files).

        * runtime/UString.h:
        (JSC::UStringHash::equal):
        * wtf/text/StringHash.h:
        (WTF::StringHash::equal):

2011-06-08  Yael Aharon  <yael.aharon@nokia.com>

        Reviewed by Andreas Kling.

        [Qt] Build fix for building QtWebKit inside of Qt.
        https://bugs.webkit.org/show_bug.cgi?id=62280

        Remove CONFIG=staticlib, because it causes the configure script to add -ljavascriptcore
        into QtWebKit.prl.

        No new tests, as this is just a build fix.

        * JavaScriptCore.pri:

2011-06-07  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Split 'reset' into 'collect' and 'resetAllocator'
        https://bugs.webkit.org/show_bug.cgi?id=62267

        * heap/Heap.cpp:
        (JSC::Heap::allocate):
        (JSC::Heap::collectAllGarbage):
        (JSC::Heap::collect):
        * heap/Heap.h:
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::resetAllocator):
        * heap/MarkedSpace.cpp:
        (JSC::MarkedSpace::resetAllocator):
        * heap/MarkedSpace.h:
        (JSC::MarkedSpace::SizeClass::resetAllocator):

2011-06-07  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Renamed some more marks to visits
        https://bugs.webkit.org/show_bug.cgi?id=62254

        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::visitStrongHandles):
        (JSC::HandleHeap::visitWeakHandles):
        * heap/HandleHeap.h:
        * heap/HandleStack.cpp:
        (JSC::HandleStack::visit):
        * heap/HandleStack.h:
        * heap/Heap.cpp:
        (JSC::Heap::markProtectedObjects):
        (JSC::Heap::markTempSortVectors):
        (JSC::Heap::markRoots):
        * heap/HeapRootVisitor.h:
        (JSC::HeapRootVisitor::visit):
        * runtime/ArgList.cpp:
        (JSC::MarkedArgumentBuffer::markLists):

2011-06-07  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig

        https://bugs.webkit.org/show_bug.cgi?id=55537
        Functions claim to have 'callee' which they actually don't (and shouldn't)

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::getOwnPropertyNames):

2011-06-07  Juan C. Montemayor  <jmont@apple.com>

        Reviewed by Darin Adler.

        Make JSStaticFunction and JSStaticValue less "const"
        https://bugs.webkit.org/show_bug.cgi?id=62222

        * API/JSObjectRef.h:
        * API/tests/testapi.c:
        (checkConstnessInJSObjectNames):
        (main):
        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-06-07  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=62240
        DFG JIT - add support for for-loop array initialization.

        Support put by val beyond vector length.
        Add a operationPutByValBeyondArrayBounds operation, make
        PutValVal call this if the vector length check fails.

        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::silentSpillGPR):
        (JSC::DFG::JITCodeGenerator::silentFillGPR):
        (JSC::DFG::JITCodeGenerator::silentSpillAllRegisters):
        (JSC::DFG::JITCodeGenerator::isDoubleConstantWithInt32Value):
        (JSC::DFG::JITCodeGenerator::isJSConstantWithInt32Value):
        (JSC::DFG::JITCodeGenerator::isIntegerConstant):
        (JSC::DFG::JITCodeGenerator::valueOfIntegerConstant):
        * dfg/DFGOperations.cpp:
        (JSC::DFG::operationPutByValInternal):
        * dfg/DFGOperations.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:

2011-06-06  James Simonsen  <simonjam@chromium.org>

        Reviewed by James Robinson.

        Add monotonicallyIncreasingTime() to get monotonically increasing time
        https://bugs.webkit.org/show_bug.cgi?id=37743

        * wtf/CurrentTime.cpp: Add monotonicallyIncreasingTime() for mac and a fallback implementation that just wraps currentTime().
        (WTF::monotonicallyIncreasingTime):
        * wtf/CurrentTime.h: Add monotonicallyIncreasingTime().

2011-06-06  Alexandru Chiculita  <achicu@adobe.com>

        Reviewed by Kent Tamura.

        Add ENABLE_CSS_EXCLUSIONS support for build-webkit script
        https://bugs.webkit.org/show_bug.cgi?id=61628

        * Configurations/FeatureDefines.xcconfig:

2011-06-06  Mihnea Ovidenie  <mihnea@adobe.com>

        Reviewed by Kent Tamura.

        Add ENABLE(CSS_REGIONS) guard for CSS Regions support
        https://bugs.webkit.org/show_bug.cgi?id=61631

        * Configurations/FeatureDefines.xcconfig:

2011-06-06  Carlos Garcia Campos  <cgarcia@igalia.com>

        Unreviewed. Fix the GTK+ build.

        * GNUmakefile.am: Add javascriptcore_cflags variable.

2011-06-04  Kevin Ollivier  <kevino@theolliviers.com>

        [wx] Unreviewed build fix. Restore the PPC build and allow users to specify architectures
        to build on Mac.

        * wtf/Platform.h:

2011-06-04  Gustavo Noronha Silva  <gns@gnome.org>

        Unreviewed, MIPS build fix.

        WebKitGTK+ tarball fails to build on MIPS.
        https://buildd.debian.org/status/fetch.php?pkg=webkitgtk%2B&arch=mips&ver=1.4.0-1&stamp=1304786691

        * GNUmakefile.list.am: Add missing MIPS-related file to the list
        of files that are added to the tarball on make dist, and fix
        sorting.

2011-06-04  Sam Weinig  <sam@webkit.org>

        Reviewed by Darin Adler.

        Fix formatting of the output generated by KeywordLookupGenerator.py
        https://bugs.webkit.org/show_bug.cgi?id=62083

        - Uses correct year for copyright.
        - Puts ending brace on same line as "else if"
        - Puts starting brace of function on its own line.
        - Adds some tasteful whitespace.
        - Adds comments to make clear that scopes are ending
        - Make macros actually split on two lines.

        * KeywordLookupGenerator.py:

2011-06-04  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        KeywordLookupGenerator.py spams stdout in Chromium Linux build
        https://bugs.webkit.org/show_bug.cgi?id=62087

        This action does not appear to be needed.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-06-03  Oliver Hunt  <oliver@apple.com>

        Reviewed by Maciej Stachowiak.

        Lexer needs to provide Identifier for reserved words
        https://bugs.webkit.org/show_bug.cgi?id=62086

        Alas it is necessary to provide an Identifier reference for keywords
        so that we can do the right thing when they're used in object literals.
        We now keep Identifiers for all reserved words in the CommonIdentifiers
        structure so that we can access them without a hash lookup.

        * KeywordLookupGenerator.py:
        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):
        * parser/Lexer.h:
        * runtime/CommonIdentifiers.cpp:
        (JSC::CommonIdentifiers::CommonIdentifiers):
        * runtime/CommonIdentifiers.h:

2011-06-03  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Add debug code to break on speculation failures.

        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGNode.h:

2011-06-03  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=62082
        DFG JIT - bug passing arguments that need swap

        This is really just a typo.
        When setting up the arguments for a call out to a C operation, we'll
        fail to swap arguments where this is necessary. For example, in the
        case of 2 arg calls, where the first argument is in %rdx & the second
        is in %rsi we should swap (exec will be passed in %rdi), but we don't.

        This can also affect function calls passing three arguments.

        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::setupTwoStubArgs):
            - Call swap with the correct arguments.

2011-06-03  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Force inlining of some hot lexer functions
        https://bugs.webkit.org/show_bug.cgi?id=62079

        Fix more GCC stupidity

        * parser/Lexer.h:
        (JSC::Lexer::isWhiteSpace):
        (JSC::Lexer::isLineTerminator):

2011-06-03  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        GCC not inlining some functions that it really should be
        https://bugs.webkit.org/show_bug.cgi?id=62075

        Add ALWAYS_INLINE to a number of parsing and lexing functions
        that should always be inlined.  This gets us ~1.4% on my ad hoc
        parser test.

        * KeywordLookupGenerator.py:
        * parser/JSParser.cpp:
        (JSC::JSParser::next):
        (JSC::JSParser::nextTokenIsColon):
        (JSC::JSParser::consume):
        (JSC::JSParser::match):
        (JSC::JSParser::tokenStart):
        (JSC::JSParser::tokenLine):
        (JSC::JSParser::tokenEnd):
        * parser/Lexer.cpp:
        (JSC::isIdentPart):

2011-06-03  Oliver Hunt  <oliver@apple.com>

        Whoops, fix last minute bug.

        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):

2011-06-03  Martin Robinson  <mrobinson@igalia.com>

        Try to fix the GTK+ build.

        * GNUmakefile.am: Clean up some spaces that should be tabs.
        * GNUmakefile.list.am: Add KeywordLookup.h to the source list
        and clean up some spaces that should be tabs.

2011-06-03  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Improve keyword lookup
        https://bugs.webkit.org/show_bug.cgi?id=61913

        Rather than doing multiple hash lookups as we currently
        do when trying to identify keywords we now use an 
        automatically generated decision tree (essentially it's
        a hard coded patricia trie).  We still use the regular
        lookup table for the last few characters of an input as
        this allows us to completely skip all bounds checks.

        * CMakeLists.txt:
        * DerivedSources.make:
        * DerivedSources.pro:
        * GNUmakefile.am:
        * JavaScriptCore.gyp/JavaScriptCore.gyp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * KeywordLookupGenerator.py: Added.
        * make-generated-sources.sh:
        * parser/Lexer.cpp:
        (JSC::Lexer::internalShift):
        (JSC::Lexer::shift):
        (JSC::Lexer::parseIdentifier):
        * parser/Lexer.h:

2011-06-03  Siddharth Mathur  <siddharth.mathur@nokia.com>

        Reviewed by Benjamin Poulain.

        [Qt] Build flag for experimental ICU library support
        https://bugs.webkit.org/show_bug.cgi?id=60786

        Adds a build-time flag (CONFIG+=use_system_icu) that enables experimental 
        ICU powered Unicode support. 

        * JavaScriptCore.pri: Support for use_system_icu CONFIG flag.
        * wtf/unicode/qt4/UnicodeQt4.h: Guard an include file with USE(ICU_UNICODE). 

2011-06-03  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Benjamin Poulain.

        [Qt] Build fix of QtWebKit 2.2 when inside Qt tree with GCC 4.6.
        https://bugs.webkit.org/show_bug.cgi?id=61957

        When building inside the Qt source tree, qmake always append the mkspecs
        defines after ours. We have to workaround and make sure that we append 
        our flags after the qmake variable used inside Qt. This workaround was provided 
        by our qmake folks. We need to append in both case because qmake behave differently
        when called with -spec or via SUBDIR+=. This patch unbreak r87950 on Mac for Qt port.

        * JavaScriptCore.pro:

2011-06-02  Jay Civelli  <jcivelli@chromium.org>

        Reviewed by Adam Barth.

        Added a method to generate RFC 2822 compliant date strings.
        https://bugs.webkit.org/show_bug.cgi?id=7169

        * wtf/DateMath.cpp:
        (WTF::twoDigitStringFromNumber):
        (WTF::makeRFC2822DateString):
        * wtf/DateMath.h:

2011-06-02  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Andreas Kling.

        [Qt] Build fix of QtWebKit 2.2 when inside Qt tree with GCC 4.6.
        https://bugs.webkit.org/show_bug.cgi?id=61957

        When building inside the Qt source tree, qmake always append the mkspecs
        defines after ours. We have to workaround and make sure that we append  
        our flags after the qmake variable used inside Qt. This workaround was provided
        by our qmake folks.

        * JavaScriptCore.pro:

2011-06-01  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Add single character lookup cache to IdentifierArena
        https://bugs.webkit.org/show_bug.cgi?id=61879

        Add a simple lookup cache for single ascii character
        identifiers.  Produces around a 2% improvement in parse
        time for my adhoc parser test.

        * parser/ParserArena.h:
        (JSC::IdentifierArena::IdentifierArena):
        (JSC::IdentifierArena::clear):
        (JSC::IdentifierArena::makeIdentifier):

2011-05-31  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Freezing a function and its prototype causes browser to crash.
        https://bugs.webkit.org/show_bug.cgi?id=61758

        Make JSObject::preventExtensions virtual so that we can override it
        and instantiate all lazy

        * JavaScriptCore.exp:
        * runtime/JSFunction.cpp:
        (JSC::createPrototypeProperty):
        (JSC::JSFunction::preventExtensions):
        (JSC::JSFunction::getOwnPropertySlot):
        * runtime/JSFunction.h:
        * runtime/JSObject.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::seal):
        (JSC::JSObject::seal):

2011-06-01  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r87788.
        http://trac.webkit.org/changeset/87788
        https://bugs.webkit.org/show_bug.cgi?id=61856

        breaks windows chromium canary (Requested by jknotten on
        #webkit).

        * wtf/DateMath.cpp:
        (WTF::timeClip):
        * wtf/DateMath.h:

2011-06-01  Jay Civelli  <jcivelli@chromium.org>

        Reviewed by Adam Barth.

        Added a method to generate RFC 2822 compliant date strings.
        https://bugs.webkit.org/show_bug.cgi?id=7169

        * wtf/DateMath.cpp:
        (WTF::twoDigitStringFromNumber):
        (WTF::makeRFC2822DateString):
        * wtf/DateMath.h:

2011-05-31  Yong Li  <yoli@rim.com>

        Reviewed by Eric Seidel.

        https://bugs.webkit.org/show_bug.cgi?id=54807
        We have been assuming plain bitfields (like "int a : 31") are always signed integers.
        However some compilers can treat them as unsigned. For example, RVCT 4.0 states plain
        bitfields (declared without either signed or unsigned qualifiers) are treats as unsigned.
        http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0348c/Babjddhe.html
        Although we can use "--signed-bitfields" flag to make RVCT 4.0 behave as most other compilers,
        always using "signed"/"unsigned" qualifier to declare integral type bitfields is still a good
        rule we should have in order to make our code independent from compilers and compiler flags.

        No new test added because this change is not known to fix any issue.

        * bytecode/StructureStubInfo.h:

2011-05-30  Hojong Han  <hojong.han@samsung.com>

        Reviewed by Geoffrey Garen.

        [JSC] malfunction during arithmetic condition check with negative number (-2147483648)
        https://bugs.webkit.org/show_bug.cgi?id=61416

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::branch32):
        * tests/mozilla/ecma/Expressions/11.12-1.js:
        (getTestCases):

2011-05-29  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Some heap refactoring
        https://bugs.webkit.org/show_bug.cgi?id=61704
        
        SunSpider says no change.

        * JavaScriptCore.exp: Export!

        * heap/Heap.cpp: COLLECT_ON_EVERY_ALLOCATION can actually do so now.

        (JSC::Heap::Heap): Changed Heap sub-objects to point to the heap.

        (JSC::Heap::allocate): Changed inline allocation code to only select the
        size class, since this can be optimized out at compile time -- everything
        else is now inlined into this out-of-line function.
        
        No need to duplicate ASSERTs made in our caller.

        * heap/Heap.h:
        (JSC::Heap::heap):
        (JSC::Heap::isMarked):
        (JSC::Heap::testAndSetMarked):
        (JSC::Heap::testAndClearMarked):
        (JSC::Heap::setMarked): Call directly into MarkedBlock instead of adding
        a layer of indirection through MarkedSpace.

        (JSC::Heap::allocate): See above.

        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::create):
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedBlock.h: Changed Heap sub-objects to point to the heap.

        * heap/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::allocateBlock):
        * heap/MarkedSpace.h:
        (JSC::MarkedSpace::allocate): Updated to match changes above.

2011-05-28  David Kilzer  <ddkilzer@apple.com>

        BUILD FIX when building only the interpreter

        Fixes the following compiler warning:

            JavaScriptCore/runtime/JSGlobalData.cpp:462:6: error: no previous prototype for function 'releaseExecutableMemory' [-Werror,-Wmissing-prototypes,3]
             void releaseExecutableMemory(JSGlobalData& globalData)
                  ^

        * jit/ExecutableAllocator.h: Moved declaration of
        JSC::releaseExecutableMemory().

2011-05-28  David Kilzer  <ddkilzer@apple.com>

        BUILD FIX after r87527 with ENABLE(BRANCH_COMPACTION)

        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::linkCode): Added missing argument.

2011-05-27  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        JS API is too aggressive about throwing exceptions for NULL get or set operations
        https://bugs.webkit.org/show_bug.cgi?id=61678

        * API/JSCallbackObject.h: Changed our staticValueGetter to a regular
        function that returns a JSValue, so it can fail and still forward to
        normal property lookup.

        * API/JSCallbackObjectFunctions.h:
        (JSC::::getOwnPropertySlot): Don't throw an exception when failing to
        access a static property -- just forward the access. This allows objects
        to observe get/set operations but still let the JS object manage lifetime.

        (JSC::::put): Ditto.

        (JSC::::getStaticValue): Same as JSCallbackObject.h.

        * API/tests/testapi.c:
        (MyObject_set_nullGetForwardSet):
        * API/tests/testapi.js: Updated tests to reflect slightly less strict
        behavior, which matches headerdoc claims.

2011-05-27  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Property caching is too aggressive for API objects
        https://bugs.webkit.org/show_bug.cgi?id=61677

        * API/JSCallbackObject.h: Opt in to ProhibitsPropertyCaching, since our
        callback APIs allow the client to change its mind about our propertis at
        any time.

        * API/tests/testapi.c:
        (PropertyCatchalls_getProperty):
        (PropertyCatchalls_setProperty):
        (PropertyCatchalls_getPropertyNames):
        (PropertyCatchalls_class):
        (main):
        * API/tests/testapi.js: Some tests for dynamic API objects.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::tryCachePutByID):
        (JSC::Interpreter::tryCacheGetByID):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::tryCachePutByID):
        (JSC::JITThunks::tryCacheGetByID):
        (JSC::DEFINE_STUB_FUNCTION): Opt out of property caching if the client
        requires it.

        * runtime/JSTypeInfo.h:
        (JSC::TypeInfo::TypeInfo):
        (JSC::TypeInfo::isFinal):
        (JSC::TypeInfo::prohibitsPropertyCaching):
        (JSC::TypeInfo::flags): Added a flag to track opting out of property
        caching. Fixed an "&&" vs "&" typo that was previously harmless, but
        is now harmful since m_flags2 can have more than one bit set.

2011-05-27  Stephanie Lewis  <slewis@apple.com>

        Unreviewed.

        Fix a typo in the order_file flag.

        * Configurations/Base.xcconfig:

2011-05-27  Patrick Gansterer  <paroga@webkit.org>

        Unreviewed. Build fix for !ENABLE(ASSEMBLER) after r87527.

        * runtime/JSGlobalData.cpp:
        (JSGlobalData::JSGlobalData):

2011-05-27  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Add a few validity assertions to JSCallbackObject
        https://bugs.webkit.org/show_bug.cgi?id=61659

        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::visitChildren):

2011-05-27  Oliver Hunt  <oliver@apple.com>

        Build fix

        * runtime/RegExpCache.cpp:
        (JSC::RegExpCache::invalidateCode):

2011-05-27  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Try to release unused executable memory when the FixedVMPool allocator is under pressure
        https://bugs.webkit.org/show_bug.cgi?id=61651

        Rather than crashing when full the FixedVMPool allocator now returns a null
        allocation.  We replace the code that used to CRASH() on null allocations
        with logic that asks the provided globalData to release any executable memory
        that it can.  Currently this just means throwing away all regexp code, but
        in future we'll try to be more aggressive.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::executableCopy):
        * assembler/ARMAssembler.h:
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::executableCopy):
        * assembler/AssemblerBufferWithConstantPool.h:
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::LinkBuffer):
        (JSC::LinkBuffer::linkCode):
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::executableCopy):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::executableCopy):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::executableCopy):
        (JSC::X86Assembler::X86InstructionFormatter::executableCopy):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * jit/ExecutableAllocator.h:
        (JSC::ExecutablePool::create):
        (JSC::ExecutablePool::alloc):
        (JSC::ExecutableAllocator::ExecutableAllocator):
        (JSC::ExecutableAllocator::poolForSize):
        (JSC::ExecutablePool::ExecutablePool):
        (JSC::ExecutablePool::poolAllocate):
        * jit/ExecutableAllocatorFixedVMPool.cpp:
        (JSC::FixedVMPoolAllocator::alloc):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::finalize):
        * jit/ThunkGenerators.cpp:
        (JSC::charCodeAtThunkGenerator):
        (JSC::charAtThunkGenerator):
        (JSC::fromCharCodeThunkGenerator):
        (JSC::sqrtThunkGenerator):
        (JSC::powThunkGenerator):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::releaseExecutableMemory):
        (JSC::releaseExecutableMemory):
        * runtime/JSGlobalData.h:
        * runtime/RegExpCache.cpp:
        (JSC::RegExpCache::invalidateCode):
        * runtime/RegExpCache.h:
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::compile):

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Optimized ConservativeSet to avoid double-visiting objects
        https://bugs.webkit.org/show_bug.cgi?id=61592
        
        SunSpider thinks this might be a 1% speedup

        * heap/ConservativeRoots.h:
        (JSC::ConservativeRoots::add): Use testAndClearMarked to avoid double-visiting
        an object.

        * heap/Heap.h:
        (JSC::Heap::isMarked):
        (JSC::Heap::testAndSetMarked):
        (JSC::Heap::testAndClearMarked):
        (JSC::Heap::setMarked): Added testAndClearMarked. Changed argument type
        to void*, since clients want to ask questions about arbitrary pointers
        into the heap, even when they aren't known to be JSCells.

        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::testAndClearMarked):
        * heap/MarkedSpace.h:
        (JSC::MarkedSpace::isMarked):
        (JSC::MarkedSpace::testAndSetMarked):
        (JSC::MarkedSpace::testAndClearMarked):
        (JSC::MarkedSpace::setMarked):
        (JSC::MarkedSpace::contains): Ditto.

        * wtf/Bitmap.h:
        (WTF::::testAndClear): New function for ConservativeRoots's inverted
        marking pass.

2011-05-27  Stephanie Lewis  <slewis@apple.com>

        Rubber Stamped by Adam Roben.

        Update Order Files.  Use -order_file flag since it can order more of the binary.

        * Configurations/Base.xcconfig:
        * JavaScriptCore.order:

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Renamed heapRootMarker to heapRootVisitor to match its class name
        https://bugs.webkit.org/show_bug.cgi?id=61584

        * heap/Heap.cpp:
        (JSC::Heap::markProtectedObjects):
        (JSC::Heap::markTempSortVectors):
        (JSC::Heap::markRoots):

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed some interdependency between Heap and SmallStrings by simplifying
        the SmallStrings lifetime model
        https://bugs.webkit.org/show_bug.cgi?id=61579
        
        SunSpider reports no change.
        
        Using Weak<T> could accomplish this too, but we're not sure it will give
        us the performance we need. This is a first step, and it accomplishes
        most of the value of using Weak<T>.

        * heap/Heap.cpp:
        (JSC::Heap::destroy):
        (JSC::Heap::markRoots):
        (JSC::Heap::reset): Finalize small strings just like other weak handles.

        * runtime/SmallStrings.cpp:
        (JSC::finalize):
        (JSC::SmallStrings::finalizeSmallStrings):
        * runtime/SmallStrings.h: Make all small strings trivially weak, instead
        of having an "all for one, one for all" memory model.

2011-05-26  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make RegExpCache a weak map
        https://bugs.webkit.org/show_bug.cgi?id=61554

        Switch to a weak map for the regexp cache, and hide that
        behaviour behind RegExp::create.

        When a RegExp is compiled it attempts to add itself to
        the "strong" cache.  This cache is a simple round-robin
        buffer as was the old strong cache.  Happily this can
        be smaller than the old strong cache as RegExps are only
        added when they're compiled so it is under less pressure
        to evict.

        * bytecompiler/NodesCodegen.cpp:
        (JSC::RegExpNode::emitBytecode):
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        (JSC::RegExp::create):
        (JSC::RegExp::match):
        * runtime/RegExp.h:
        (JSC::RegExp::gcShouldInvalidateCode):
        (JSC::RegExp::hasCode):
        (JSC::RegExp::key):
        * runtime/RegExpCache.cpp:
        (JSC::RegExpCache::lookupOrCreate):
        (JSC::RegExpCache::RegExpCache):
        (JSC::RegExpCache::isReachableFromOpaqueRoots):
        (JSC::RegExpCache::finalize):
        * runtime/RegExpCache.h:
        * runtime/RegExpConstructor.cpp:
        (JSC::constructRegExp):
        * runtime/RegExpPrototype.cpp:
        (JSC::regExpProtoFuncCompile):
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Moved Heap-related functions out of JSCell.h and into respective header files
        https://bugs.webkit.org/show_bug.cgi?id=61567

        * heap/Heap.h:
        (JSC::Heap::allocate):
        (JSC::Heap::heap):
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::allocate):
        * heap/MarkedSpace.h:
        (JSC::MarkedSpace::sizeClassFor):
        (JSC::MarkedSpace::allocate):
        * runtime/JSCell.h:
        (JSC::JSCell::destructor):

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Try to fix Windows build.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-05-26  Ryosuke Niwa  <rniwa@webkit.org>

        Reviewed by Eric Seidel.

        [debug feature] WTFString should have show() method
        https://bugs.webkit.org/show_bug.cgi?id=61149

        Added String::show and AtomicString::show in NDEBUG.

        * wtf/text/AtomicString.cpp:
        (WTF::AtomicString::show):
        * wtf/text/AtomicString.h:
        * wtf/text/WTFString.cpp:
        (String::show):
        * wtf/text/WTFString.h:

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Geoffrey Garen.

        Factored out some Heap ASSERTs
        https://bugs.webkit.org/show_bug.cgi?id=61565

        * JavaScriptCore.exp:
        * heap/Heap.cpp:
        (JSC::isValidSharedInstanceThreadState):
        (JSC::isValidThreadState):
        (JSC::Heap::markRoots):
        (JSC::Heap::isValidAllocation):
        * heap/Heap.h:
        * runtime/JSCell.h:
        (JSC::JSCell::Heap::allocate):

2011-05-26  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=61508
        DFG JIT - Add support for get by id self caching.

        Change the call out to be an unexpected call (using silent spill/fill functions),
        add a structure check & compact load to the JIT code, and add repatching mechanisms.
        Since DFGOperations may want to be be implemented in asm, make these symbols be extern
        "C". Add an asm wrapper to pass the return address to the optimizing get-by-id operation,
        so that it can look up its StructureStubInfo.

        * JavaScriptCore.xcodeproj/project.pbxproj:
            - Added new files.
        * bytecode/StructureStubInfo.h:
            - Added 'unset' entries to union.
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::appendCallWithExceptionCheck):
            - Return the call, we need this to populate the StructureStubInfo.
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
            - Populate the CodebBlock's StructureStubInfo Vector.
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::appendCallWithExceptionCheck):
            - Return the call, we need this to populate the StructureStubInfo.
        (JSC::DFG::JITCompiler::addPropertyAccess):
        (JSC::DFG::JITCompiler::PropertyAccessRecord::PropertyAccessRecord):
            - Add structures to record property access info during compilation.
        * dfg/DFGOperations.cpp:
            - Made all external methods extern "C".
        (JSC::DFG::operationPutByValInternal):
            - Moved outside of the extern "C" block.
        * dfg/DFGOperations.h:
            - Made all external methods extern "C".
        * dfg/DFGRepatch.cpp: Added.
        (JSC::DFG::dfgRepatchCall):
            - repatch a call to link to a new callee function.
        (JSC::DFG::dfgRepatchGetByIdSelf):
            - Modify the JIT code to optimize self accesses.
        (JSC::DFG::tryCacheGetByID):
            - Internal implementation of dfgRepatchGetByID (factor out failing cases).
        (JSC::DFG::dfgRepatchGetByID):
            - Used to optimize 'operationGetByIdOptimize' - repatches to 'operationGetById', and tries to optimize self accesses!
        * dfg/DFGRepatch.h: Added.
            - Expose dfgRepatchGetByID.
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
            - Changed implementation of GetById ops.

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Rolled back in http://trac.webkit.org/changeset/87408 with Windows build fixed.

        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedBlock.h:
        * wtf/DoublyLinkedList.h:
        (WTF::::DoublyLinkedListNode):
        (WTF::::setPrev):
        (WTF::::setNext):
        (WTF::::prev):
        (WTF::::next):
        (WTF::::DoublyLinkedList):
        (WTF::::isEmpty):
        (WTF::::size):
        (WTF::::clear):
        (WTF::::head):
        (WTF::::append):
        (WTF::::remove):
        (WTF::::removeHead):

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Rolled out http://trac.webkit.org/changeset/87408 because it broke the
        Windows build.

        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::setPrev):
        (JSC::MarkedBlock::setNext):
        (JSC::MarkedBlock::prev):
        (JSC::MarkedBlock::next):
        * wtf/DoublyLinkedList.h:
        (WTF::::DoublyLinkedList):
        (WTF::::isEmpty):
        (WTF::::head):
        (WTF::::append):
        (WTF::::remove):

2011-05-26  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Provide a real owner when copying a property table, for the sake of
        write barriers.
        https://bugs.webkit.org/show_bug.cgi?id=61547
        
        No test because we can't enable the writeBarrier() ASSERT just yet.

        * runtime/Structure.cpp:
        (JSC::Structure::addPropertyTransition):

2011-05-26  Adam Roben  <aroben@apple.com>

        Windows build fix after r87346

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Fixed up exports to match
        reality.

2011-05-26  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Adam Barth.

        ASSERT(isMainThread()) when using single threaded jsc executable
        https://bugs.webkit.org/show_bug.cgi?id=60846

        Remove the ASSERT since we do not have the concept of MainThread in JSC.

        * wtf/CryptographicallyRandomNumber.cpp:
        (WTF::ARC4Stream::ARC4RandomNumberGenerator::randomNumber):
        (WTF::ARC4Stream::ARC4RandomNumberGenerator::randomValues):

2011-05-25  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=61506

        Move the silent spill/fill methods in the DFG JIT to the JITCodeGenerator
        so that they are available to the SpeculativeJIT.

        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::silentSpillGPR):
        (JSC::DFG::JITCodeGenerator::silentSpillFPR):
        (JSC::DFG::JITCodeGenerator::silentFillGPR):
        (JSC::DFG::JITCodeGenerator::silentFillFPR):
        (JSC::DFG::JITCodeGenerator::silentSpillAllRegisters):
        (JSC::DFG::JITCodeGenerator::silentFillAllRegisters):
        * dfg/DFGNonSpeculativeJIT.h:

2011-05-25  Ryosuke Niwa  <rniwa@webkit.org>

        An attempt to revive Windows bots.

        * runtime/RegExp.cpp:
        * runtime/RegExp.h:

2011-05-25  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 61503 - Move population of CodeBlock::m_structureStubInfos into JIT

        This data structure, used at runtime by the JIT, is currently unnecessarily populated
        with default entries during byte compilation.

        Aside from meaning that there is JIT specific code in the bytecompiler, this also ties
        us to one entry per corresponding bytecode op, which may be undesirable. Instead,
        populate this array from the JIT.

        The type StructureStubInfo has two unused states, one for gets & one for puts. Unify
        these, so that the class can have a default constructor (and to simply switch statements
        in code walking over the table).

        This change has ramification for the DFG JIT, in that the DFG JIT used this datastructure
        to check for functions containing property access. Instead do so in the DFGByteCodeParser.

        * bytecode/CodeBlock.cpp:
        (JSC::printStructureStubInfo):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::setNumberOfStructureStubInfos):
        (JSC::CodeBlock::numberOfStructureStubInfos):
        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::deref):
        (JSC::StructureStubInfo::visitAggregate):
        * bytecode/StructureStubInfo.h:
        (JSC::StructureStubInfo::StructureStubInfo):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitGetById):
        (JSC::BytecodeGenerator::emitPutById):
        (JSC::BytecodeGenerator::emitDirectPutById):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parseBlock):
        * jit/JIT.cpp:
        (JSC::JIT::JIT):
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompileSlowCases):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_get_by_id):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::compileGetByIdSlowCase):
        (JSC::JIT::emitSlow_op_put_by_id):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_get_by_id):
        (JSC::JIT::emitSlow_op_get_by_id):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::emitSlow_op_put_by_id):
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::compileGetByIdSlowCase):
        * runtime/Executable.cpp:
        (JSC::tryDFGCompile):

2011-05-25  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 61501 - Unify AbstractMacroAssembler::differenceBetween methods.

        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::Call::Call):
        (JSC::AbstractMacroAssembler::Call::fromTailJump):
        (JSC::AbstractMacroAssembler::Jump::Jump):
        (JSC::AbstractMacroAssembler::Jump::link):
        (JSC::AbstractMacroAssembler::Jump::linkTo):
        (JSC::AbstractMacroAssembler::Jump::isSet):
        (JSC::AbstractMacroAssembler::differenceBetween):
        (JSC::AbstractMacroAssembler::linkJump):
        (JSC::AbstractMacroAssembler::getLinkerCallReturnOffset):
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::link):
        (JSC::LinkBuffer::locationOf):
        (JSC::LinkBuffer::locationOfNearCall):
        (JSC::LinkBuffer::returnAddressOffset):
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::linkCall):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::linkCall):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::linkCall):
        * assembler/MacroAssemblerSH4.cpp:
        (JSC::MacroAssemblerSH4::linkCall):
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::linkCall):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::linkCall):

2011-05-25  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=61500
        Add JSObject::offsetOfPropertyStorage

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::compileGetDirectOffset):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::compilePutDirectOffset):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::compilePutDirectOffset):
        (JSC::JIT::compileGetDirectOffset):
        * runtime/JSObject.h:
        (JSC::JSObject::offsetOfPropertyStorage):

2011-05-25  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make RegExp GC allocated
        https://bugs.webkit.org/show_bug.cgi?id=61490

        Make RegExp GC allocated.  Basically mechanical change to replace
        most use of [Pass]RefPtr<RegExp> with RegExp* or WriteBarrier<RegExp>
        where actual ownership happens.

        Made the RegExpCache use Strong<> references currently to avoid any
        changes in behaviour.

        * JavaScriptCore.exp:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addRegExp):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addRegExp):
        (JSC::BytecodeGenerator::emitNewRegExp):
        * bytecompiler/BytecodeGenerator.h:
        * runtime/JSCell.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::clearBuiltinStructures):
        (JSC::JSGlobalData::addRegExpToTrace):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        (JSC::RegExp::create):
        (JSC::RegExp::invalidateCode):
        * runtime/RegExp.h:
        (JSC::RegExp::createStructure):
        * runtime/RegExpCache.cpp:
        (JSC::RegExpCache::lookupOrCreate):
        (JSC::RegExpCache::create):
        * runtime/RegExpCache.h:
        * runtime/RegExpConstructor.cpp:
        (JSC::constructRegExp):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        (JSC::RegExpObject::visitChildren):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::setRegExp):
        (JSC::RegExpObject::RegExpObjectData::RegExpObjectData):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        (JSC::regExpProtoFuncCompile):
        * runtime/RegExpPrototype.h:
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):

2011-05-25  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Generate regexp code lazily
        https://bugs.webkit.org/show_bug.cgi?id=61476

        RegExp construction now simply validates the RegExp, it does
        not perform actual codegen.

        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        (JSC::RegExp::recompile):
        (JSC::RegExp::compile):
        (JSC::RegExp::match):
        * runtime/RegExp.h:
        (JSC::RegExp::recompileIfNecessary):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::performMatch):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::match):
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncReplace):
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):
        (JSC::stringProtoFuncSplit):

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Geoffrey Garen.

        Removed MarkSetProperties because it was unused
        https://bugs.webkit.org/show_bug.cgi?id=61418

        * heap/MarkStack.h:
        (JSC::MarkSet::MarkSet):
        (JSC::MarkStack::append):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::visitChildren):
        * runtime/JSArray.h:
        (JSC::JSArray::visitChildrenDirect):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::visitChildren):
        * runtime/WriteBarrier.h:
        (JSC::MarkStack::appendValues):

2011-05-25  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make allocations with guard pages ensure that the allocation succeeded
        https://bugs.webkit.org/show_bug.cgi?id=61453

        Add null checks, and make PageBlock's operator bool() use
        the realbase, rather than the start of usable memory.

        * wtf/OSAllocatorPosix.cpp:
        (WTF::OSAllocator::reserveAndCommit):
        * wtf/PageBlock.h:
        (WTF::PageBlock::operator bool):
        (WTF::PageBlock::PageBlock):

2011-04-10  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Eric Seidel.

        Add JS_EXPORT_PRIVATE macro for exported methods in bytecompiler headers.
        
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * bytecompiler/BytecodeGenerator.h:

2011-05-24  Keishi Hattori  <keishi@webkit.org>

        Reviewed by Kent Tamura.

        Disable textfield implementation of <input type=color>. Add INPUT_COLOR feature flag. Add input color sanitizer.
        https://bugs.webkit.org/show_bug.cgi?id=61273

        * Configurations/FeatureDefines.xcconfig: Added COLOR_INPUT feature flag.

2011-05-24  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Eric Seidel.

        Add export macros to WTFString.h.
        
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * wtf/text/WTFString.h:
        (WTF::String::String):
        (WTF::String::findIgnoringCase):
        (WTF::String::isHashTableDeletedValue):

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Maybe fix the Mac build now?

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Maybe fix the Mac build?
        
        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Split HeapRootVisitor into its own class
        https://bugs.webkit.org/show_bug.cgi?id=61399

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/HandleHeap.cpp:
        * heap/HandleStack.cpp:
        * heap/Heap.cpp:
        * heap/HeapRootVisitor.h: Copied from Source/JavaScriptCore/heap/MarkStack.h.
        * heap/MarkStack.h:
        * runtime/ArgList.cpp:
        * runtime/SmallStrings.cpp:

2011-05-24  Jay Civelli  <jcivelli@chromium.org>

        Rubberstamped by David Kilzer.

        Updated some files that I forgot in my previous MHTML CL.

        * Configurations/FeatureDefines.xcconfig:

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Fix the Mac build: Yes, please do remove these files, svn.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Let's just have one way to get the system page size, bokay?
        https://bugs.webkit.org/show_bug.cgi?id=61384

        * CMakeListsEfl.txt:
        * CMakeListsWinCE.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj: MarkStack[Platform].cpp
        is gone completely now, since it only existed to provide a duplicate way
        to access the system page size.

        * heap/MarkStack.cpp:
        (JSC::MarkStack::reset):
        * heap/MarkStack.h:
        (JSC::::MarkStackArray):
        (JSC::::shrinkAllocation): Use WTF::pageSize.

        * heap/MarkStackPosix.cpp:
        * heap/MarkStackSymbian.cpp:
        * heap/MarkStackWin.cpp: Removed now-empty files.

        * jit/ExecutableAllocator.cpp:
        (JSC::ExecutableAllocator::reprotectRegion):
        * jit/ExecutableAllocator.h:
        (JSC::ExecutableAllocator::ExecutableAllocator):
        (JSC::ExecutablePool::ExecutablePool):
        (JSC::ExecutablePool::poolAllocate):
        * jit/ExecutableAllocatorFixedVMPool.cpp: Use WTF::pageSize.

        * wscript: Removed now-empty files.

        * wtf/PageBlock.cpp:
        (WTF::systemPageSize): Integrated questionable Symbian page size rule
        from ExecutableAllocator, because that seems like what the original
        author should have done.

2011-05-24  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Interpreter crashes with gc validation enabled due to failure to mark initial cache structure
        https://bugs.webkit.org/show_bug.cgi?id=61385

        The interpreter uses the structure slot of get_by_id and put_by_id to hold
        the initial structure it encountered so that it can identify whether a
        given access is stable.

        When marking though we only visit the slot when we've decided to cache, and
        so this value could die.  This was "safe" as the value was only used for a
        pointer compare, but it was incorrect.  We now just mark the slot like we
        should have been doing already.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitStructures):

2011-05-24  Adam Roben  <aroben@apple.com>

        Windows build fix

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Removed now-inline functions.

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Windows build fix: update the #if OS(WINDOWS) section to match my last patch.

        * heap/MarkStack.h:
        (JSC::::shrinkAllocation):

2011-05-24  Geoffrey Garen  <ggaren@apple.com>

        Rubber-stamped by Oliver Hunt.

        Split out function definitions and class definitions from class
        declarations in MarkStack.h, for readability.

        * heap/MarkStack.h:
        (JSC::MarkStack::MarkStack):
        (JSC::MarkStack::~MarkStack):
        (JSC::MarkStack::addOpaqueRoot):
        (JSC::MarkStack::containsOpaqueRoot):
        (JSC::MarkStack::opaqueRootCount):
        (JSC::MarkSet::MarkSet):
        (JSC::MarkStack::allocateStack):
        (JSC::MarkStack::releaseStack):
        (JSC::MarkStack::pageSize):
        (JSC::::MarkStackArray):
        (JSC::::~MarkStackArray):
        (JSC::::expand):
        (JSC::::append):
        (JSC::::removeLast):
        (JSC::::last):
        (JSC::::isEmpty):
        (JSC::::size):
        (JSC::::shrinkAllocation):

2011-05-24  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Avoid creating unnecessary identifiers and strings in the syntax checker
        https://bugs.webkit.org/show_bug.cgi?id=61378

        Selectively tell the lexer that there are some places it does not need to
        do the real work of creating Identifiers for IDENT and STRING tokens.

        Make parseString and parseIdentifier templatized on whether they should
        do real work, or merely validate the tokens.

        SunSpider --parse-only reports ~5-8% win depending on hardware.

        * parser/ASTBuilder.h:
        (JSC::ASTBuilder::createDotAccess):
        * parser/JSParser.cpp:
        (JSC::JSParser::next):
        (JSC::JSParser::consume):
        (JSC::JSParser::parseVarDeclarationList):
        (JSC::JSParser::parseConstDeclarationList):
        (JSC::JSParser::parseExpression):
        (JSC::JSParser::parseAssignmentExpression):
        (JSC::JSParser::parseConditionalExpression):
        (JSC::JSParser::parseBinaryExpression):
        (JSC::JSParser::parseProperty):
        (JSC::JSParser::parseObjectLiteral):
        (JSC::JSParser::parseArrayLiteral):
        (JSC::JSParser::parseArguments):
        (JSC::JSParser::parseMemberExpression):
        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):
        (JSC::Lexer::parseString):
        (JSC::Lexer::lex):
        * parser/Lexer.h:
        * parser/SyntaxChecker.h:
        (JSC::SyntaxChecker::createDotAccess):
        (JSC::SyntaxChecker::createProperty):

2011-05-23  Michael Saboff  <msaboff@apple.com>

        Reviewed by Mark Rowe.

        Safari often freezes when clicking "Return free memory" in Caches dialog
        https://bugs.webkit.org/show_bug.cgi?id=61325

        There are two fixes and improvement in instrumentation code used to find 
        one of the problems.
        Changed ReleaseFreeList() to set the "decommitted" bit when releasing
        pages to the system and moving Spans from the normal list to the returned 
        list.
        Added a "not making forward progress" check to TCMalloc_PageHeap::scavenge
        to eliminate an infinite loop if we can't meet the pagesToRelease target.
        Added a check for the decommitted bit being set properly in 
        TCMalloc_PageHeap::CheckList.

        * wtf/FastMalloc.cpp:
        (WTF::TCMalloc_PageHeap::scavenge):
        (WTF::TCMalloc_PageHeap::Check):
        (WTF::TCMalloc_PageHeap::CheckList):
        (WTF::ReleaseFreeList):

2011-05-23  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=61306

        The begin characters optimization currently has issues (#61129),
        and does not appear to still be a performance win. The prudent
        next step seems to be to disable while we ascertain whether this
        is still a useful performance optimization.

        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::Interpreter::matchDisjunction):
        (JSC::Yarr::Interpreter::interpret):
        * yarr/YarrInterpreter.h:
        (JSC::Yarr::BytecodePattern::BytecodePattern):
        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPatternConstructor::YarrPatternConstructor):
        (JSC::Yarr::YarrPattern::compile):
        (JSC::Yarr::YarrPattern::YarrPattern):
        * yarr/YarrPattern.h:
        (JSC::Yarr::YarrPattern::reset):

2011-05-23  Matthew Delaney  <mdelaney@apple.com>

        Reviewed by Simon Fraser.

        Remove safeFloatToInt() in FloatRect.cpp and replace with working version of clampToInteger()
        https://bugs.webkit.org/show_bug.cgi?id=58216

        * wtf/MathExtras.h:
        (clampToInteger):
        (clampToPositiveInteger):

2011-05-23  Ruben  <chromium@hybridsource.org>

        Reviewed by Tony Chang.

        Chromium gyp patch to use new POSIX defines toolkit_uses_gtk and os_posix
        https://bugs.webkit.org/show_bug.cgi?id=61219

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-05-23  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        Reviewed by Gavin Barraclough.

        [SH4] AssemblerLabel does not name a type
        https://bugs.webkit.org/show_bug.cgi?id=59927

        SH4Assembler.h file shoold be included before AbstractMacroAssembler.h.

        * assembler/MacroAssemblerSH4.h:

2011-05-23  Ryuan Choi  <ryuan.choi@samsung.com>

        Rubber stamped by Eric Seidel.

        [CMAKE] Refactoring wtf related code.
        https://bugs.webkit.org/show_bug.cgi?id=60146

        Move wtf-files to Source/JavaScriptCore/wtf/CMakeLists.txt.

        * CMakeLists.txt:
        * CMakeListsEfl.txt:
        * wtf/CMakeLists.txt:
        * wtf/CMakeListsEfl.txt:

2011-05-22  Adam Barth  <abarth@webkit.org>

        Enable strict PassOwnPtr for everyone.  I expect this patch will need
        some followups to make the GTK and EFL bots green again.

        * wtf/PassOwnPtr.h:

2011-05-20  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Reduce size of inline cache path of get_by_id on ARMv7
        https://bugs.webkit.org/show_bug.cgi?id=61221

        This reduces the code size of get_by_id by 20 bytes

        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::ldrCompact):
        (JSC::ARMv7Assembler::repatchCompact):
        (JSC::ARMv7Assembler::setUInt7ForLoad):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::load32WithCompactAddressOffsetPatch):
        * jit/JIT.h:

2011-05-20  Zoltan Herczeg  <zherczeg@inf.u-szeged.hu>

        Reviewed by Oliver Hunt.

        Zombies should "live" forever
        https://bugs.webkit.org/show_bug.cgi?id=61170

        Reusing zombie cells could still hide garbage
        collected cell related bugs.

        * JavaScriptCore.pro:
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::clearMarks):
        * heap/MarkedBlock.h:
        * heap/MarkedSpace.cpp:
        (JSC::MarkedSpace::destroy):
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::isZombie):
        * runtime/JSZombie.h:
        (JSC::JSZombie::~JSZombie):
        * runtime/WriteBarrier.h:
        (JSC::WriteBarrierBase::setWithoutWriteBarrier):

2011-05-20  Brady Eidson  <beidson@apple.com>

        Reviewed by Sam Weinig.

        <rdar://problem/9472883> and https://bugs.webkit.org/show_bug.cgi?id=61203
        Horrendous bug in callOnMainThreadAndWait

        * wtf/MainThread.cpp:
        (WTF::dispatchFunctionsFromMainThread): Before signaling the background thread with the
          syncFlag condition, reacquire the mutex first.

2011-05-20  Oliver Hunt  <oliver@apple.com>

        Reviewed by Sam Weinig.

        Remove unnecessary double->int conversion at the end of op_div
        https://bugs.webkit.org/show_bug.cgi?id=61198

        We don't attempt this conversion on 64bit, removing it actually speeds
        up sunspider and v8 slightly, and it reduces code size.

        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emit_op_div):

2011-05-19  Evan Martin  <evan@chromium.org>

        Reviewed by Tony Chang.

        [chromium] remove <(library) variable
        https://bugs.webkit.org/show_bug.cgi?id=61158

        This was for a build experiment; we can just use the correct value now.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-05-20  Oliver Hunt  <oliver@apple.com>

        Reviewed by Sam Weinig.

        Interpreter uses wrong bytecode offset for determining exception handler
        https://bugs.webkit.org/show_bug.cgi?id=61191

        The bytecode offset given for the returnPC from the JIT is
        actually the offset for the start of the instruction triggering
        the call, whereas in the interpreter it is the actual return
        VPC.  This means if the next instruction following a call was
        in an exception region we would incorrectly redirect to its
        handler.  Long term we want to completely redo how exceptions
        are handled anyway so the simplest and lowest risk fix here is
        to simply subtract one from the return vPC so that we have an
        offset in the triggering instruction.

        It turns out this is caught by a couple of tests already.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::unwindCallFrame):

2011-05-20  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Oliver Hunt.

        JIT requires VM overcommit (particularly on x86-64), Linux does not by default support this without swap?
        https://bugs.webkit.org/show_bug.cgi?id=42756

        Use the MAP_NORESERVE flag for mmap on Linux to skip the kernel
        check of the available memory. This should give us an
        overcommit-like behavior in most systems, which is what we want.

        * wtf/OSAllocatorPosix.cpp:
        (WTF::OSAllocator::reserveAndCommit): pass MAP_NORSERVE to mmap.

2011-05-19  Gabor Loki  <loki@webkit.org>

        Fix ARM build after r86919

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::nop):

2011-05-19  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Randomise code starting location a little
        https://bugs.webkit.org/show_bug.cgi?id=61161

        Add a nop() function to the Assemblers so that we
        can randomise code offsets slightly at no real cost.

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::nop):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::nop):
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::nop):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::nop):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::nop):
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::nop):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::nop):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::nop):
        * jit/JIT.cpp:
        (JSC::JIT::JIT):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        * runtime/WeakRandom.h:
        (JSC::WeakRandom::getUint32):

2011-05-19  Oliver Hunt  <oliver@apple.com>

        Fix windows build.

        * wtf/OSAllocatorWin.cpp:
        (WTF::OSAllocator::reserveUncommitted):
        (WTF::OSAllocator::reserveAndCommit):

2011-05-19  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Add guard pages to each end of the memory region used by the fixedvm allocator
        https://bugs.webkit.org/show_bug.cgi?id=61150

        Add mechanism to notify the OSAllocator that pages at either end of an
        allocation should be considered guard pages.  Update PageReservation,
        PageAllocation, etc to handle this.

        * JavaScriptCore.exp:
        * jit/ExecutableAllocatorFixedVMPool.cpp:
        (JSC::FixedVMPoolAllocator::FixedVMPoolAllocator):
        * wtf/OSAllocator.h:
        * wtf/OSAllocatorPosix.cpp:
        (WTF::OSAllocator::reserveUncommitted):
        (WTF::OSAllocator::reserveAndCommit):
        * wtf/PageAllocation.h:
        (WTF::PageAllocation::PageAllocation):
        * wtf/PageAllocationAligned.h:
        (WTF::PageAllocationAligned::PageAllocationAligned):
        * wtf/PageBlock.h:
        (WTF::PageBlock::PageBlock):
        * wtf/PageReservation.h:
        (WTF::PageReservation::reserve):
        (WTF::PageReservation::reserveWithGuardPages):
            Add a new function to make a reservation that will add guard
            pages to the ends of an allocation.
        (WTF::PageReservation::PageReservation):

2011-05-19  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make Executables release their JIT code as soon as they become dead
        https://bugs.webkit.org/show_bug.cgi?id=61134

        Add an ability to clear an Executable's jit code without requiring
        it to be destroyed, and then call that from a finalizer.

        * heap/Weak.h:
        (JSC::Weak::Weak):
        (JSC::Weak::leak):
        * jit/JITCode.h:
        (JSC::JITCode::clear):
        * runtime/Executable.cpp:
        (JSC::ExecutableFinalizer::finalize):
        (JSC::ExecutableBase::executableFinalizer):
        * runtime/Executable.h:
        (JSC::ExecutableBase::ExecutableBase):
        (JSC::ExecutableBase::clearExecutableCode):

2011-05-19  Adam Roben  <aroben@apple.com>

        Remove a redundant and broken data export

        Data can't be exported from JavaScriptCore.dll by listing it in the .def file. The
        JS_EXPORTDATA macro must be used instead. (In this case it was already being used, leading
        to a linker warning about multiple definitions.)

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Removed JSGlobalData::s_info.

2011-05-18  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Some tests crashing in JSC::MarkStack::validateValue beneath ScriptController::clearWindowShell on SnowLeopard Intel Release (WebKit2 Tests)
        https://bugs.webkit.org/show_bug.cgi?id=61064

        Switch NonFinalObject to using WriteBarrier<> rather than WriteBarrierBase<>
        for its inline storage.  This resolves the problem of GC occurring before
        a subclass has initialised its anonymous storage.

        * runtime/JSObject.h:

2011-05-18  Adam Barth  <abarth@webkit.org>

        Reviewed by Sam Weinig.

        Delete WTFURL
        https://bugs.webkit.org/show_bug.cgi?id=61084

        It's been a year and we've failed to complete this project.  It's time
        to throw in the towel.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/url: Removed.
        * wtf/url/api: Removed.
        * wtf/url/api/ParsedURL.cpp: Removed.
        * wtf/url/api/ParsedURL.h: Removed.
        * wtf/url/api/URLString.h: Removed.
        * wtf/url/src: Removed.
        * wtf/url/src/RawURLBuffer.h: Removed.
        * wtf/url/src/URLBuffer.h: Removed.
        * wtf/url/src/URLCharacterTypes.cpp: Removed.
        * wtf/url/src/URLCharacterTypes.h: Removed.
        * wtf/url/src/URLComponent.h: Removed.
        * wtf/url/src/URLEscape.cpp: Removed.
        * wtf/url/src/URLEscape.h: Removed.
        * wtf/url/src/URLParser.h: Removed.
        * wtf/url/src/URLQueryCanonicalizer.h: Removed.
        * wtf/url/src/URLSegments.cpp: Removed.
        * wtf/url/src/URLSegments.h: Removed.
        * wtf/url/wtfurl.gyp: Removed.

2011-05-18  Oliver Hunt  <oliver@apple.com>

        Reviewed by Sam Weinig.

        JSGlobalObject and some others do GC allocation during initialization, which can cause heap corruption
        https://bugs.webkit.org/show_bug.cgi?id=61090

        Remove the Structure-free JSGlobalObject constructor and instead always
        pass the structure into the JSGlobalObject constructor.
        Stop DebuggerActivation creating a new structure every time, and simply
        use a single shared structure held by the GlobalData.

        * API/JSContextRef.cpp:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::DebuggerActivation):
        * jsc.cpp:
        (GlobalObject::GlobalObject):
        (functionRun):
        (jscmain):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::clearBuiltinStructures):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.h:

2011-05-18  Oliver Hunt  <oliver@apple.com>

        Reviewed by Adam Roben.

        Disable gc validation in release builds
        https://bugs.webkit.org/show_bug.cgi?id=60680

        Add back the NDEBUG check

        * wtf/Platform.h:

2011-05-17  Geoffrey Garen  <ggaren@apple.com>

        Rolled out attempts to fix EFL build because they're not enough -- the
        build script needs to be fixed.

        * runtime/BooleanPrototype.cpp:
        * runtime/DateConstructor.cpp:
        * runtime/ErrorPrototype.cpp:

2011-05-17  Geoffrey Garen  <ggaren@apple.com>

        More attempts to work around the EFL build system being borken.

        * runtime/DateConstructor.cpp:
        * runtime/ErrorPrototype.cpp:

2011-05-17  Geoffrey Garen  <ggaren@apple.com>

        Try to fix the EFL build.

        * runtime/BooleanPrototype.cpp:

2011-05-16  Geoffrey Garen  <ggaren@apple.com>

        Rolling back in r86653 with build fixed.

        Reviewed by Gavin Barraclough and Oliver Hunt.

        Global object initialization is expensive
        https://bugs.webkit.org/show_bug.cgi?id=60933
        
        Changed a bunch of globals to allocate their properties lazily, and changed
        the global object to allocate a bunch of its globals lazily.
        
        This reduces the footprint of a global object from 287 objects with 58
        functions for 24K to 173 objects with 20 functions for 15K.

        Large patch, but it's all mechanical.

        * DerivedSources.make:
        * JavaScriptCore.exp: Build!

        * create_hash_table: Added a special case for fromCharCode, since it uses
        a custom "thunk generator".

        * heap/Heap.cpp:
        (JSC::TypeCounter::operator()): Fixed a bug where the type counter would
        overcount objects that were owned through more than one mechanism because
        it was getting in the way of counting the results for this patch.

        * interpreter/CallFrame.h:
        (JSC::ExecState::arrayConstructorTable):
        (JSC::ExecState::arrayPrototypeTable):
        (JSC::ExecState::booleanPrototypeTable):
        (JSC::ExecState::dateConstructorTable):
        (JSC::ExecState::errorPrototypeTable):
        (JSC::ExecState::globalObjectTable):
        (JSC::ExecState::numberConstructorTable):
        (JSC::ExecState::numberPrototypeTable):
        (JSC::ExecState::objectPrototypeTable):
        (JSC::ExecState::regExpPrototypeTable):
        (JSC::ExecState::stringConstructorTable): Added new tables.

        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        (JSC::ArrayConstructor::getOwnPropertySlot):
        (JSC::ArrayConstructor::getOwnPropertyDescriptor):
        * runtime/ArrayConstructor.h:
        (JSC::ArrayConstructor::createStructure):
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::getOwnPropertySlot):
        (JSC::ArrayPrototype::getOwnPropertyDescriptor):
        * runtime/ArrayPrototype.h:
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        (JSC::BooleanPrototype::getOwnPropertySlot):
        (JSC::BooleanPrototype::getOwnPropertyDescriptor):
        * runtime/BooleanPrototype.h:
        (JSC::BooleanPrototype::createStructure):
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        (JSC::DateConstructor::getOwnPropertySlot):
        (JSC::DateConstructor::getOwnPropertyDescriptor):
        * runtime/DateConstructor.h:
        (JSC::DateConstructor::createStructure):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        (JSC::ErrorPrototype::getOwnPropertySlot):
        (JSC::ErrorPrototype::getOwnPropertyDescriptor):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::createStructure): Standardized these objects
        to use static tables for function properties.

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::~JSGlobalData):
        * runtime/JSGlobalData.h: Added new tables.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        (JSC::JSGlobalObject::addStaticGlobals):
        (JSC::JSGlobalObject::getOwnPropertySlot):
        (JSC::JSGlobalObject::getOwnPropertyDescriptor):
        * runtime/JSGlobalObject.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        * runtime/JSGlobalObjectFunctions.h: Changed JSGlobalObject to use a
        static table for its global functions. This required uninlining some
        things to avoid a circular header dependency. However, those things
        probably shouldn't have been inlined in the first place.
        
        Even more global object properties can be made lazy, but that requires
        more in-depth changes.

        * runtime/MathObject.cpp:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::getOwnPropertySlot):
        (JSC::NumberConstructor::getOwnPropertyDescriptor):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        (JSC::NumberPrototype::getOwnPropertySlot):
        (JSC::NumberPrototype::getOwnPropertyDescriptor):
        * runtime/NumberPrototype.h:
        (JSC::NumberPrototype::createStructure):
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::ObjectPrototype):
        (JSC::ObjectPrototype::put):
        (JSC::ObjectPrototype::getOwnPropertySlot):
        (JSC::ObjectPrototype::getOwnPropertyDescriptor):
        * runtime/ObjectPrototype.h:
        (JSC::ObjectPrototype::createStructure):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        (JSC::RegExpPrototype::getOwnPropertySlot):
        (JSC::RegExpPrototype::getOwnPropertyDescriptor):
        * runtime/RegExpPrototype.h:
        (JSC::RegExpPrototype::createStructure):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        (JSC::StringConstructor::getOwnPropertySlot):
        (JSC::StringConstructor::getOwnPropertyDescriptor):
        * runtime/StringConstructor.h:
        (JSC::StringConstructor::createStructure): Standardized these objects
        to use static tables for function properties.

2011-05-17  Sam Weinig  <sam@webkit.org>

        Reviewed by Oliver Hunt.

        JSGlobalContextRelease should not trigger a synchronous garbage collection
        https://bugs.webkit.org/show_bug.cgi?id=60990

        * API/JSContextRef.cpp:
        Change synchronous call to collectAllGarbage to a call to trigger the
        activityCallback.

2011-05-16  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Reduce code size for inline cache
        https://bugs.webkit.org/show_bug.cgi?id=60942

        This patch introduces the concept of a "compact" address that
        allows individual architectures to control the maximum offset
        used for the inline path of get_by_id.  This reduces the code
        size of get_by_id by 3 bytes on x86 and x86_64 and slightly
        improves performance on v8 tests.

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::repatchCompact):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::repatchCompact):
        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::DataLabelCompact::DataLabelCompact):
        (JSC::AbstractMacroAssembler::differenceBetween):
        (JSC::AbstractMacroAssembler::repatchCompact):
        * assembler/CodeLocation.h:
        (JSC::CodeLocationDataLabelCompact::CodeLocationDataLabelCompact):
        (JSC::CodeLocationCommon::dataLabelCompactAtOffset):
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::locationOf):
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::repatchCompact):
        * assembler/MacroAssembler.h:
        (JSC::MacroAssembler::loadPtrWithCompactAddressOffsetPatch):
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::load32WithCompactAddressOffsetPatch):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::load32WithCompactAddressOffsetPatch):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::load32WithCompactAddressOffsetPatch):
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::load32WithAddressOffsetPatch):
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::repatchCompact):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::loadCompactWithAddressOffsetPatch):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::loadPtrWithCompactAddressOffsetPatch):
        * assembler/RepatchBuffer.h:
        (JSC::RepatchBuffer::repatch):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::repatchCompact):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::movl_mr_disp8):
        (JSC::X86Assembler::movq_mr_disp8):
        (JSC::X86Assembler::repatchCompact):
        (JSC::X86Assembler::setInt8):
        (JSC::X86Assembler::X86InstructionFormatter::oneByteOp_disp8):
        (JSC::X86Assembler::X86InstructionFormatter::oneByteOp64_disp8):
        (JSC::X86Assembler::X86InstructionFormatter::memoryModRM):
        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::patchGetByIdSelf):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::patchGetByIdSelf):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::tryCacheGetByID):

2011-05-16  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r86653.
        http://trac.webkit.org/changeset/86653
        https://bugs.webkit.org/show_bug.cgi?id=60944

        "Caused regressions on Windows, OSX and EFL" (Requested by
        yutak on #webkit).

        * DerivedSources.make:
        * DerivedSources.pro:
        * GNUmakefile.am:
        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * create_hash_table:
        * heap/Heap.cpp:
        (JSC::TypeCounter::operator()):
        * interpreter/CallFrame.h:
        (JSC::ExecState::arrayTable):
        (JSC::ExecState::numberTable):
        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        * runtime/ArrayConstructor.h:
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::getOwnPropertySlot):
        (JSC::ArrayPrototype::getOwnPropertyDescriptor):
        * runtime/ArrayPrototype.h:
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        * runtime/BooleanPrototype.h:
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        * runtime/DateConstructor.h:
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        * runtime/ErrorPrototype.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::~JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::addStaticGlobals):
        (JSC::JSGlobalObject::getOwnPropertySlot):
        (JSC::JSGlobalObject::getOwnPropertyDescriptor):
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncJSCPrint):
        * runtime/JSGlobalObjectFunctions.h:
        * runtime/MathObject.cpp:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::getOwnPropertySlot):
        (JSC::NumberConstructor::getOwnPropertyDescriptor):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        * runtime/NumberPrototype.h:
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::ObjectPrototype):
        (JSC::ObjectPrototype::put):
        (JSC::ObjectPrototype::getOwnPropertySlot):
        * runtime/ObjectPrototype.h:
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        * runtime/RegExpPrototype.h:
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        * runtime/StringConstructor.h:

2011-05-16  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Geoffrey Garen.

        Global object initialization is expensive
        https://bugs.webkit.org/show_bug.cgi?id=60933
        
        Changed a bunch of globals to allocate their properties lazily, and changed
        the global object to allocate a bunch of its globals lazily.
        
        This reduces the footprint of a global object from 287 objects with 58
        functions for 24K to 173 objects with 20 functions for 15K.

        Large patch, but it's all mechanical.

        * DerivedSources.make:
        * JavaScriptCore.exp: Build!

        * create_hash_table: Added a special case for fromCharCode, since it uses
        a custom "thunk generator".

        * heap/Heap.cpp:
        (JSC::TypeCounter::operator()): Fixed a bug where the type counter would
        overcount objects that were owned through more than one mechanism because
        it was getting in the way of counting the results for this patch.

        * interpreter/CallFrame.h:
        (JSC::ExecState::arrayConstructorTable):
        (JSC::ExecState::arrayPrototypeTable):
        (JSC::ExecState::booleanPrototypeTable):
        (JSC::ExecState::dateConstructorTable):
        (JSC::ExecState::errorPrototypeTable):
        (JSC::ExecState::globalObjectTable):
        (JSC::ExecState::numberConstructorTable):
        (JSC::ExecState::numberPrototypeTable):
        (JSC::ExecState::objectPrototypeTable):
        (JSC::ExecState::regExpPrototypeTable):
        (JSC::ExecState::stringConstructorTable): Added new tables.

        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        (JSC::ArrayConstructor::getOwnPropertySlot):
        (JSC::ArrayConstructor::getOwnPropertyDescriptor):
        * runtime/ArrayConstructor.h:
        (JSC::ArrayConstructor::createStructure):
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::getOwnPropertySlot):
        (JSC::ArrayPrototype::getOwnPropertyDescriptor):
        * runtime/ArrayPrototype.h:
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        (JSC::BooleanPrototype::getOwnPropertySlot):
        (JSC::BooleanPrototype::getOwnPropertyDescriptor):
        * runtime/BooleanPrototype.h:
        (JSC::BooleanPrototype::createStructure):
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        (JSC::DateConstructor::getOwnPropertySlot):
        (JSC::DateConstructor::getOwnPropertyDescriptor):
        * runtime/DateConstructor.h:
        (JSC::DateConstructor::createStructure):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        (JSC::ErrorPrototype::getOwnPropertySlot):
        (JSC::ErrorPrototype::getOwnPropertyDescriptor):
        * runtime/ErrorPrototype.h:
        (JSC::ErrorPrototype::createStructure): Standardized these objects
        to use static tables for function properties.

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::~JSGlobalData):
        * runtime/JSGlobalData.h: Added new tables.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        (JSC::JSGlobalObject::addStaticGlobals):
        (JSC::JSGlobalObject::getOwnPropertySlot):
        (JSC::JSGlobalObject::getOwnPropertyDescriptor):
        * runtime/JSGlobalObject.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        * runtime/JSGlobalObjectFunctions.h: Changed JSGlobalObject to use a
        static table for its global functions. This required uninlining some
        things to avoid a circular header dependency. However, those things
        probably shouldn't have been inlined in the first place.
        
        Even more global object properties can be made lazy, but that requires
        more in-depth changes.

        * runtime/MathObject.cpp:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::getOwnPropertySlot):
        (JSC::NumberConstructor::getOwnPropertyDescriptor):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        (JSC::NumberPrototype::getOwnPropertySlot):
        (JSC::NumberPrototype::getOwnPropertyDescriptor):
        * runtime/NumberPrototype.h:
        (JSC::NumberPrototype::createStructure):
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::ObjectPrototype):
        (JSC::ObjectPrototype::put):
        (JSC::ObjectPrototype::getOwnPropertySlot):
        (JSC::ObjectPrototype::getOwnPropertyDescriptor):
        * runtime/ObjectPrototype.h:
        (JSC::ObjectPrototype::createStructure):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        (JSC::RegExpPrototype::getOwnPropertySlot):
        (JSC::RegExpPrototype::getOwnPropertyDescriptor):
        * runtime/RegExpPrototype.h:
        (JSC::RegExpPrototype::createStructure):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        (JSC::StringConstructor::getOwnPropertySlot):
        (JSC::StringConstructor::getOwnPropertyDescriptor):
        * runtime/StringConstructor.h:
        (JSC::StringConstructor::createStructure): Standardized these objects
        to use static tables for function properties.

2011-05-16  David Kilzer  <ddkilzer@apple.com>

        <http://webkit.org/b/60913> C++ exceptions should not be enabled when building with llvm-gcc-4.2
        <rdar://problem/9446430>

        Reviewed by Mark Rowe.

        * Configurations/Base.xcconfig: Fixed typo.

2011-05-16  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        JSWeakObjectMap finalisation may occur while gc is in inconsistent state
        https://bugs.webkit.org/show_bug.cgi?id=60908
        <rdar://problem/9409491>

        We need to ensure that we have called all the weak map finalizers while
        the global object (and hence global context) is still in a consistent
        state.  The best way to achieve this is to simply use a weak handle and
        finalizer on the global object.

        * JavaScriptCore.exp:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::WeakMapFinalizer::finalize):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::registerWeakMap):

2011-05-16  Siddharth Mathur  <siddharth.mathur@nokia.com>

        Reviewed by Laszlo Gombos.

        [Qt][WK2][Symbian] Shared memory implementation for Symbian
        https://bugs.webkit.org/show_bug.cgi?id=55875

        * wtf/Platform.h: Exclude Symbian OS from USE(UNIX_DOMAIN_SOCKETS) users

2011-05-16  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=60866
        Evaluation order broken for empty alternatives in subpatterns

        Reverting https://bugs.webkit.org/show_bug.cgi?id=51395

        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPatternConstructor::atomParenthesesEnd):

2011-05-15  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen & Michael Saboff.

        https://bugs.webkit.org/show_bug.cgi?id=60860
        Simplify backtracking in YARR JIT

        YARR JIT currently performs a single pass of code generation over the pattern,
        with special handling to allow the code generation for some backtracking code
        out of line. We can simplify things by moving to a common mechanism whereby all
        forwards matching code is generated in one pass, and all backtracking code is
        generated in another. Backtracking code can be generated in reverse order, to
        optimized the common fall-through case.

        To make it easier to walk over the pattern, we can first convert to a more
        byte-code like format before JIT generating. In time we should unify this with
        the YARR interpreter to more closely unify the two.

        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::jumpIfNoAvailableInput):
        (JSC::Yarr::YarrGenerator::YarrOp::YarrOp):
        (JSC::Yarr::YarrGenerator::BacktrackingState::BacktrackingState):
        (JSC::Yarr::YarrGenerator::BacktrackingState::append):
        (JSC::Yarr::YarrGenerator::BacktrackingState::fallthrough):
        (JSC::Yarr::YarrGenerator::BacktrackingState::link):
        (JSC::Yarr::YarrGenerator::BacktrackingState::linkTo):
        (JSC::Yarr::YarrGenerator::BacktrackingState::takeBacktracksToJumpList):
        (JSC::Yarr::YarrGenerator::BacktrackingState::isEmpty):
        (JSC::Yarr::YarrGenerator::BacktrackingState::linkDataLabels):
        (JSC::Yarr::YarrGenerator::BacktrackingState::ReturnAddressRecord::ReturnAddressRecord):
        (JSC::Yarr::YarrGenerator::generateAssertionBOL):
        (JSC::Yarr::YarrGenerator::backtrackAssertionBOL):
        (JSC::Yarr::YarrGenerator::generateAssertionEOL):
        (JSC::Yarr::YarrGenerator::backtrackAssertionEOL):
        (JSC::Yarr::YarrGenerator::matchAssertionWordchar):
        (JSC::Yarr::YarrGenerator::generateAssertionWordBoundary):
        (JSC::Yarr::YarrGenerator::backtrackAssertionWordBoundary):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterOnce):
        (JSC::Yarr::YarrGenerator::backtrackPatternCharacterOnce):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterFixed):
        (JSC::Yarr::YarrGenerator::backtrackPatternCharacterFixed):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterGreedy):
        (JSC::Yarr::YarrGenerator::backtrackPatternCharacterGreedy):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterNonGreedy):
        (JSC::Yarr::YarrGenerator::backtrackPatternCharacterNonGreedy):
        (JSC::Yarr::YarrGenerator::generateCharacterClassOnce):
        (JSC::Yarr::YarrGenerator::backtrackCharacterClassOnce):
        (JSC::Yarr::YarrGenerator::generateCharacterClassFixed):
        (JSC::Yarr::YarrGenerator::backtrackCharacterClassFixed):
        (JSC::Yarr::YarrGenerator::generateCharacterClassGreedy):
        (JSC::Yarr::YarrGenerator::backtrackCharacterClassGreedy):
        (JSC::Yarr::YarrGenerator::generateCharacterClassNonGreedy):
        (JSC::Yarr::YarrGenerator::backtrackCharacterClassNonGreedy):
        (JSC::Yarr::YarrGenerator::generateTerm):
        (JSC::Yarr::YarrGenerator::backtrackTerm):
        (JSC::Yarr::YarrGenerator::generate):
        (JSC::Yarr::YarrGenerator::backtrack):
        (JSC::Yarr::YarrGenerator::opCompileParenthesesSubpattern):
        (JSC::Yarr::YarrGenerator::opCompileParentheticalAssertion):
        (JSC::Yarr::YarrGenerator::opCompileAlternative):
        (JSC::Yarr::YarrGenerator::opCompileBody):
        (JSC::Yarr::YarrGenerator::YarrGenerator):
        (JSC::Yarr::YarrGenerator::compile):

2011-05-15  Adam Barth  <abarth@webkit.org>

        Enable strict PassOwnPtr on Qt.  (Build fixes to follow.)

        * wtf/PassOwnPtr.h:

2011-05-15  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Maciej Stachowiak.

        Partial fix for <rdar://problem/9417875> REGRESSION: SunSpider ~17% slower
        in browser than on command line
        
        This patch fixes a few issues in generated code that could unreasonably
        prolong object lifetimes.

        * heap/Heap.cpp:
        (JSC::Heap::collectAllGarbage): Throw away all function code before doing
        a major collection. We want to clear polymorphic caches, since they can
        keep alive large object graphs that have gone "stale". For the same reason,
        but to a lesser extent, we also want to clear linked functions and other
        one-off caches.

        This has the side-benefit of reducing memory footprint from run-once
        functions, and of allowing predictions and caches that have failed to
        re-specialize.

        Eventually, if compilation costs rise far enough, we may want a more
        limited strategy for de-specializing code without throwing it away
        completely, but this works for now, and it's the simplest solution.

        * jit/JITStubs.cpp:
        (JSC::JITThunks::hostFunctionStub):
        * jit/JITStubs.h:
        * runtime/JSFunction.cpp: Made the host function stub cache weak --
        otherwise it's effectively a memory leak that can seriously fragment the
        GC and JIT heaps.

        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::visitChildren): Cleared up some comments that confused
        me when working with this code.

2011-05-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make GC validation more aggressive
        https://bugs.webkit.org/show_bug.cgi?id=60802

        This patch makes the checks performed under GC_VALIDATION
        much more aggressive, and adds the checks to more places
        in order to allow us to catch GC bugs much closer to the
        point of failure.

        * JavaScriptCore.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::visitChildren):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedSpace.cpp:
        * runtime/Arguments.cpp:
        (JSC::Arguments::visitChildren):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::visitChildren):
        (JSC::ProgramExecutable::visitChildren):
        (JSC::FunctionExecutable::visitChildren):
        * runtime/Executable.h:
        * runtime/GetterSetter.cpp:
        (JSC::GetterSetter::visitChildren):
        * runtime/GetterSetter.h:
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        (JSC::JSAPIValueWrapper::JSAPIValueWrapper):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::visitChildren):
        * runtime/JSArray.cpp:
        (JSC::JSArray::visitChildren):
        * runtime/JSCell.cpp:
        (JSC::slowValidateCell):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::unvalidatedStructure):
        (JSC::JSCell::JSCell::JSCell):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::visitChildren):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::visitChildren):
        (JSC::slowValidateCell):
        * runtime/JSONObject.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::visitChildren):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::visitChildren):
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::visitChildren):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        * runtime/JSWrapperObject.cpp:
        (JSC::JSWrapperObject::visitChildren):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::visitChildren):
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyMapEntry::PropertyMapEntry):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::visitChildren):
        * runtime/ScopeChain.cpp:
        (JSC::ScopeChainNode::visitChildren):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::visitChildren):
        * runtime/Structure.h:
        (JSC::JSCell::classInfo):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::visitChildren):
        * runtime/StructureChain.h:
        * runtime/WriteBarrier.h:
        (JSC::validateCell):
        (JSC::JSCell):
        (JSC::JSGlobalObject):
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::setMayBeNull):
        (JSC::WriteBarrierBase::setEarlyValue):
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):
        (JSC::WriteBarrierBase::unvalidatedGet):
        (JSC::WriteBarrier::WriteBarrier):
        * wtf/Assertions.h:

2011-05-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make GC validation more aggressive
        https://bugs.webkit.org/show_bug.cgi?id=60802

        This patch makes the checks performed under GC_VALIDATION
        much more aggressive, and adds the checks to more places
        in order to allow us to catch GC bugs much closer to the
        point of failure.

        * JavaScriptCore.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::visitChildren):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedSpace.cpp:
        * runtime/Arguments.cpp:
        (JSC::Arguments::visitChildren):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::visitChildren):
        (JSC::ProgramExecutable::visitChildren):
        (JSC::FunctionExecutable::visitChildren):
        * runtime/Executable.h:
        * runtime/GetterSetter.cpp:
        (JSC::GetterSetter::visitChildren):
        * runtime/GetterSetter.h:
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        (JSC::JSAPIValueWrapper::JSAPIValueWrapper):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::visitChildren):
        * runtime/JSArray.cpp:
        (JSC::JSArray::visitChildren):
        * runtime/JSCell.cpp:
        (JSC::slowValidateCell):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::unvalidatedStructure):
        (JSC::JSCell::JSCell::JSCell):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::visitChildren):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::visitChildren):
        (JSC::slowValidateCell):
        * runtime/JSONObject.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::visitChildren):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::visitChildren):
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::visitChildren):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        * runtime/JSWrapperObject.cpp:
        (JSC::JSWrapperObject::visitChildren):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::visitChildren):
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyMapEntry::PropertyMapEntry):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::visitChildren):
        * runtime/ScopeChain.cpp:
        (JSC::ScopeChainNode::visitChildren):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::visitChildren):
        * runtime/Structure.h:
        (JSC::JSCell::classInfo):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::visitChildren):
        * runtime/StructureChain.h:
        * runtime/WriteBarrier.h:
        (JSC::validateCell):
        (JSC::JSCell):
        (JSC::JSGlobalObject):
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::setMayBeNull):
        (JSC::WriteBarrierBase::setEarlyValue):
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):
        (JSC::WriteBarrierBase::unvalidatedGet):
        (JSC::WriteBarrier::WriteBarrier):
        * wtf/Assertions.h:

2011-05-14  Csaba Osztrogonác  <ossy@webkit.org>

        Unreviewed, rolling out r86469 and r86471, because they made hundreds tests crash on Qt.

        Make GC validation more aggressive
        https://bugs.webkit.org/show_bug.cgi?id=60802

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::visitChildren):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedSpace.cpp:
        * runtime/Arguments.cpp:
        (JSC::Arguments::visitChildren):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::visitChildren):
        (JSC::ProgramExecutable::visitChildren):
        (JSC::FunctionExecutable::visitChildren):
        * runtime/Executable.h:
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/GetterSetter.cpp:
        (JSC::GetterSetter::visitChildren):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::visitChildren):
        * runtime/JSArray.cpp:
        (JSC::JSArray::visitChildren):
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::JSCell):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::visitChildren):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::visitChildren):
        * runtime/JSONObject.h:
        (JSC::JSONObject::createStructure):
        * runtime/JSObject.cpp:
        (JSC::JSObject::visitChildren):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::visitChildren):
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::visitChildren):
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
        * runtime/JSWrapperObject.cpp:
        (JSC::JSWrapperObject::visitChildren):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::visitChildren):
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyMapEntry::PropertyMapEntry):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::visitChildren):
        * runtime/ScopeChain.cpp:
        (JSC::ScopeChainNode::visitChildren):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::visitChildren):
        * runtime/Structure.h:
        (JSC::Structure::createStructure):
        (JSC::JSCell::classInfo):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::visitChildren):
        * runtime/StructureChain.h:
        * runtime/WriteBarrier.h:
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):
        (JSC::WriteBarrier::WriteBarrier):
        * wtf/Assertions.h:

2011-05-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make GC validation more aggressive
        https://bugs.webkit.org/show_bug.cgi?id=60802

        This patch makes the checks performed under GC_VALIDATION
        much more aggressive, and adds the checks to more places
        in order to allow us to catch GC bugs much closer to the
        point of failure.

        * JavaScriptCore.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::visitChildren):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * heap/MarkedSpace.cpp:
        * runtime/Arguments.cpp:
        (JSC::Arguments::visitChildren):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::visitChildren):
        (JSC::ProgramExecutable::visitChildren):
        (JSC::FunctionExecutable::visitChildren):
        * runtime/Executable.h:
        * runtime/GetterSetter.cpp:
        (JSC::GetterSetter::visitChildren):
        * runtime/GetterSetter.h:
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        (JSC::JSAPIValueWrapper::JSAPIValueWrapper):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::visitChildren):
        * runtime/JSArray.cpp:
        (JSC::JSArray::visitChildren):
        * runtime/JSCell.cpp:
        (JSC::slowValidateCell):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::unvalidatedStructure):
        (JSC::JSCell::JSCell::JSCell):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::visitChildren):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::visitChildren):
        (JSC::slowValidateCell):
        * runtime/JSONObject.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::visitChildren):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::visitChildren):
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::visitChildren):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        * runtime/JSWrapperObject.cpp:
        (JSC::JSWrapperObject::visitChildren):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::visitChildren):
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyMapEntry::PropertyMapEntry):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::visitChildren):
        * runtime/ScopeChain.cpp:
        (JSC::ScopeChainNode::visitChildren):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::visitChildren):
        * runtime/Structure.h:
        (JSC::JSCell::classInfo):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::visitChildren):
        * runtime/StructureChain.h:
        * runtime/WriteBarrier.h:
        (JSC::validateCell):
        (JSC::JSCell):
        (JSC::JSGlobalObject):
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::setMayBeNull):
        (JSC::WriteBarrierBase::setEarlyValue):
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):
        (JSC::WriteBarrierBase::unvalidatedGet):
        (JSC::WriteBarrier::WriteBarrier):
        * wtf/Assertions.h:

2011-05-01  Holger Hans Peter Freyther  <holger@moiji-mobile.com>

        Reviewed by Steve Block.

        [android] OS(ANDROID) does not imply PLATFORM(ANDROID)
        https://bugs.webkit.org/show_bug.cgi?id=59888

        It is possible to build QtWebKit and others for OS(ANDROID). Let
        the buildsystem decide which platform is to be build.

        * wtf/Platform.h:

2011-05-12  Maciej Stachowiak  <mjs@apple.com>

        Reviewed by Darin Adler.

        XMLDocumentParserLibxml2 should play nice with strict OwnPtrs
        https://bugs.webkit.org/show_bug.cgi?id=59394

        This portion of the change introduces a PassTraits template, which
        is used to enable takeFirst() to work for a Deque holding OwnPtrs,
        and optimize it for a Deque holding RefPtrs. In the future it can
        be deployed elsewhere to make our data structures work better with
        our smart pointers.

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Deque.h:
        (WTF::::takeFirst):
        * wtf/PassTraits.h: Added.
        (WTF::PassTraits::transfer):

2011-05-12  Nikolas Zimmermann  <nzimmermann@rim.com>

        Not reviewed.

        Revert r86334, it broke the win build. WinCE build is fixed even without this patch. WinCairo remains broken atm, everything else works.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-05-12  Nikolas Zimmermann  <nzimmermann@rim.com>

        Not reviewed.

        String operator+ reallocates unnecessarily when concatting > 2 strings
        https://bugs.webkit.org/show_bug.cgi?id=58420

        Try to fix WinCE/WinCairo linking by exporting three symbols, not sure whether it's correct though. Win worked just fine before.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-05-12  Nikolas Zimmermann  <nzimmermann@rim.com>

        Reviewed by Darin Adler.

        String operator+ reallocates unnecessarily when concatting > 2 strings
        https://bugs.webkit.org/show_bug.cgi?id=58420

        Provide a faster String append operator.
        Up until now, "String operator+(const String& a, const String& b)" copied String a into a temporary
        object, and used a.append(b), which reallocates a new buffer of aLength+bLength. When concatting
        N strings using operator+, this leads to N-1 reallocations.

        Replace this with a flexible operator+ implementation, that avoids these reallocations.
        When concatting a 'String' with any string type (char*, UChar, Vector<char>, String, AtomicString, etc..)
        a StringAppend<String, T> object is created, which holds the intermediate string objects, and delays
        creation of the final string, until operator String() is invoked.

        template<typename T>
        StringAppend<String, T> operator+(const String& string1, T string2)
        {
            return StringAppend<String, T>(string1, string2);
        }

        template<typename U, typename V, typename W>
        StringAppend<U, StringAppend<V, W> > operator+(U string1, const StringAppend<V, W>& string2)
        {
            return StringAppend<U, StringAppend<V, W> >(string1, string2);
        }

        When concatting three strings - "String a, b, c; String result = a + b + c;" following happens:
        first a StringAppend<String, String> object is created by operator+(const String& string1, String string2).
        Then operator+(String string1, const StringAppend<String, String>& string2) is invoked, which returns
        a StringAppend<String, StringAppend<String, String> > object.
        Then operator String() is invoked, which allocates a StringImpl object, once, large enough to hold the
        final string - it uses tryMakeString provided by StringConcatenate.h under the hoods, which guards us
        against too big string allocations, etc.

        Note that the second template, defines a recursive way to concat an arbitary number of strings
        into a single String with just one allocation.

        * GNUmakefile.list.am: Add StringOperators.h to build.
        * JavaScriptCore.exp: Export WTF::emptyString(). Remove no longer needed symbols.
        * JavaScriptCore.gypi: Add StringOperators.h to build.
        * JavaScriptCore.vcproj/WTF/WTF.vcproj: Ditto.
        * JavaScriptCore.xcodeproj/project.pbxproj: Ditto.
        * wtf/text/AtomicString.h: Pull in StringConcatenate.h at the end of the file.
        * wtf/text/StringConcatenate.h: Conditionally include AtomicString.h to avoid a cyclic dependency. Pull in StringOperators.h at the end of the file.
        * wtf/text/StringOperators.h: Added. This is never meant to be included directly, including either WTFString.h or AtomicString.h automatically pulls in this file.
        (WTF::StringAppend::StringAppend):
        (WTF::StringAppend::operator String):
        (WTF::StringAppend::operator AtomicString):
        (WTF::StringAppend::writeTo):
        (WTF::StringAppend::length):
        (WTF::operator+):
        * wtf/text/WTFString.cpp: Remove operator+ implementations that use String::append(). 
        (WTF::emptyString): Add new shared empty string free function.
        * wtf/text/WTFString.h: Replace operator+ implementations by StringAppend template solution. Pull in AtomicString.h at the end of the file.

2011-05-12  Philippe Normand  <pnormand@igalia.com>

        Unreviewed, GTK build fix.

        * wtf/Platform.h:

2011-05-12  Keith Kyzivat  <keith.kyzivat@nokia.com>

        Reviewed by Csaba Osztrogonác.

        [Qt] Arm debug build failing on ARMAssembler::debugOffset()
        https://bugs.webkit.org/show_bug.cgi?id=60688

        Related to svn rev 85523

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::debugOffset):

2011-05-11  Igor Oliveira  <igor.oliveira@openbossa.org>

        Reviewed by Eric Seidel.

        WebKit does not build with GCCE
        https://bugs.webkit.org/show_bug.cgi?id=60667

        Allow compile WebKit with GCCE

        * wtf/Alignment.h:
        * wtf/Platform.h:

2011-05-11  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Enable strict PassOwnPtr on Mac
        https://bugs.webkit.org/show_bug.cgi?id=60684

        This should build cleanly now.

        * wtf/PassOwnPtr.h:

2011-05-11  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        Protect JSC from WebCore executing JS during JS wrapper finalization
        https://bugs.webkit.org/show_bug.cgi?id=60672
        <rdar://problem/9350997>

        Detect when we're trying to execute JS during GC and prevent the
        execution from happening.  We also assert that this isn't happening
        as it implies incorrect behaviour of an object's destructor.

        * JavaScriptCore.exp:
        * heap/Heap.cpp:
        * heap/Heap.h:
        (JSC::Heap::isBusy):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):
        (JSC::Interpreter::executeCall):
        (JSC::Interpreter::executeConstruct):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::isCollectorBusy):

2011-05-11  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Enable gc mark validation in temporarily in release builds
        https://bugs.webkit.org/show_bug.cgi?id=60678

        Make it easier to turn the gc mark validation on and off, and
        temporarily turn it on for all builds.

        * heap/MarkStack.cpp:
        * heap/MarkStack.h:
        (JSC::MarkStack::append):
        (JSC::MarkStack::internalAppend):
        * runtime/WriteBarrier.h:
        (JSC::MarkStack::appendValues):
        * wtf/Platform.h:

2011-05-11  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        <rdar://problem/9331651> REGRESSION: RPRVT grows by 1MB / sec @ dvd2blu.com
        
        SunSpider reports no change.

        This bug was caused by changing Structure and Executable to being GC
        objects, and by a long-standing bug that would thrash the global object
        between dictionary and non-dictionary states.

        * runtime/BatchedTransitionOptimizer.h:
        (JSC::BatchedTransitionOptimizer::BatchedTransitionOptimizer): Don't
        eagerly transition to dictionary -- this can cause pathological dictionary
        churn, and it's not necessary, since objects know how to automatically
        transition to dictionary when necessary.

        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileForCallInternal):
        (JSC::FunctionExecutable::compileForConstructInternal): Be sure to report
        extra cost from compilation, because it can be quite high. This is especially
        important for program code, since DOM timers can repeatedly allocate
        program code without allocating any other objects.

        * runtime/JSObject.cpp:
        (JSC::JSObject::removeDirect): Don't transition to the uncacheable state
        if the thing we're trying to remove doesn't exist. This can happen during
        compilation, since the compiler needs to ensure that no pre-existing
        conflicting definitions exist for certain declarations.

2011-05-11  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make mark stack validation functions do something useful in a release build
        https://bugs.webkit.org/show_bug.cgi?id=60645

        Turn ASSERTs into actual if(...) CRASH(); statements.

        * heap/MarkStack.cpp:
        (JSC::MarkStack::validateValue):

2011-05-11  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Martin Robinson.

        Fix copy&paste error in comment.

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::stringGetByValStubGenerator): the value is stored in
        regT2, not regT1.

2011-05-11  Adam Roben  <aroben@apple.com>

        WinCE build fixes for strict PassOwnPtr

        * wtf/unicode/CollatorDefault.cpp:
        (WTF::Collator::userDefault): Use adoptPtr.

2011-05-11  Holger Hans Peter Freyther  <holger@moiji-mobile.com>

        Unreviewed build fix.

        [MIPS] Fix compilation of the MIPS JIT

        Include the MIPSAssembler.h first to indirectly include
        AssemblerBuffer.h before the AbstractMacroAssembler.h. This
        order is used for the ARM and X86 MacroAssembler*.h

        * assembler/MacroAssemblerMIPS.h:

2011-05-11  Adam Roben  <aroben@apple.com>

        Turn on strict PassOwnPtr on Windows

        Fixes <http://webkit.org/b/60632> Windows should build with strict PassOwnPtr enabled

        Reviewed by Adam Barth.

        * wtf/PassOwnPtr.h:

2011-05-10  Stephanie Lewis  <slewis@apple.com>

        Unreviewed.

        Revert accidental JavaScriptCore change in http://trac.webkit.org/changeset/86130

        * Configurations/JavaScriptCore.xcconfig:

2011-05-10  Adam Barth  <abarth@webkit.org>

        Reviewed by David Levin.

        Enable strict PassOwnPtr on Chromium
        https://bugs.webkit.org/show_bug.cgi?id=60502

        Other platforms to follow.

        * wtf/PassOwnPtr.h:

2011-05-10  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        Fixed up some #include dependencies so the WriteBarrier class can actually call Heap::writeBarrier
        https://bugs.webkit.org/show_bug.cgi?id=60532

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.xcodeproj/project.pbxproj: Build!

        * heap/Handle.h: Moved HandleTypes to its own header because that's the
        WebKit style, and it was necessary to resolve a circular dependency
        between Handle.h and WriteBarrier.h.

        * heap/Heap.h:
        (JSC::Heap::writeBarrier): Added an inline no-op writeBarrier(), to
        verify that all the code is in the right place.

        * heap/MarkStack.h: Moved WriteBarrier operations to WriteBarrier.h to
        resolve a circular dependency.

        * runtime/ArgList.h:
        * runtime/JSCell.h: #include WriteBarrier.h since we don't get it for
        free anymore.

        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyTable::PropertyTable): Call the real writeBarrier()
        function, now that it exists.

        * runtime/SmallStrings.h: Removed a stray #include to resolve a circular
        dependency.

        * runtime/WriteBarrier.h:
        (JSC::WriteBarrierBase::set):
        (JSC::MarkStack::append):
        (JSC::MarkStack::appendValues): Updated to match the changes above.

2011-05-10  Oliver Hunt  <oliver@apple.com>

        Build fix.

        * heap/MarkStack.cpp:
        (JSC::MarkStack::validateValue):

2011-05-10  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Add some aggressive GC validation to debug builds.
        https://bugs.webkit.org/show_bug.cgi?id=60601

        When assertions are enabled we now do some validity checking
        of objects being added to the mark stack.

        * bytecode/Instruction.h:
        (JSC::PolymorphicAccessStructureList::PolymorphicStubInfo::PolymorphicStubInfo):
        (JSC::PolymorphicAccessStructureList::visitAggregate):
        * heap/MarkStack.cpp:
        (JSC::MarkStack::validateSet):
        (JSC::MarkStack::validateValue):
        * heap/MarkStack.h:
        (JSC::MarkStack::appendValues):
        (JSC::MarkStack::append):
        (JSC::MarkStack::internalAppend):

2011-05-09  Darin Adler  <darin@apple.com>

        Reviewed by Oliver Hunt.

        http://bugs.webkit.org/show_bug.cgi?id=60509
        Wrong type used for return value from strlen

        * wtf/FastMalloc.cpp:
        (WTF::fastStrDup): Use size_t. Also don't bother checking for failure since
        fastMalloc won't return if it fails.

2011-05-09  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        CSP should block Function constructor
        https://bugs.webkit.org/show_bug.cgi?id=60240

        When eval is disabled, we need to block the use of the function
        constructor.  However, the WebCore JSC bindings call the function
        constructor directly to create inline event listeners.  To support that
        use, this patch adds an entrypoint that bypasses the check for whether
        eval is enabled.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/FunctionConstructor.cpp:
        (JSC::constructFunction):
        (JSC::constructFunctionSkippingEvalEnabledCheck):
        * runtime/FunctionConstructor.h:

2011-05-09  Adam Roben  <aroben@apple.com>

        Automatically touch WebKit.idl whenever any other WebKit1 IDL file changes

        Fixes <http://webkit.org/b/60468> WebKit.idl needs to be manually touched whenever any other
        WebKit1 IDL file changes to avoid build errors

        Reviewed by Tim Hatcher.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.make:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.vcproj:
        Updated for script rename.

        * JavaScriptCore.vcproj/JavaScriptCore/react-to-vsprops-changes.py: Removed.
        * JavaScriptCore.vcproj/JavaScriptCore/work-around-vs-dependency-tracking-bugs.py: Renamed
        from react-to-vsprops-changes.py.
        (top level): Moved a constant here from main.
        (main): Moved most code from here to react_to_vsprops_changes. Added a call to the new
        react_to_webkit1_interface_changes function.
        (react_to_vsprops_changes): Moved code here from main. Updated to use the
        TOP_LEVEL_DIRECTORY global. Moved some code from here to mtime_of_newest_file_matching_globa
        and touch_if_older_than.
        (react_to_webkit1_interface_changes): Added. Touches WebKit.idl if any other WebKit1 IDL
        file has changed.
        (mtime_of_newest_file_matching_glob): Added. Code came from main.
        (touch_if_older_than): Added. Code came from main.

2011-05-08  Jessie Berlin  <jberlin@apple.com>

        Reviewed by Dan Bernstein.

        Make JSRetainPtr work with JSGlobalContextRefs.
        https://bugs.webkit.org/show_bug.cgi?id=60452

        Add specialized functions for JSRetain and JSRelease when dealing with JSGlobalContextRefs.

        * API/JSRetainPtr.h:
        (JSRetain):
        (JSRelease):

2011-05-07  Dawit Alemayehu  <adawit@kde.org>

        Reviewed by Daniel Bates.

        Fix compile with GCC 4.6.0
        https://bugs.webkit.org/show_bug.cgi?id=60380

        Remove unused local variable from code.

        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncMatch):

2011-05-06  Alexis Menard  <alexis.menard@openbossa.org>

        Unreviewed build fix with gcc 4.6.0 on linux and c++0x support.

        std::tr1::has_trivial_constructor is in <tr1/memory>.

        * wtf/TypeTraits.h:

2011-05-05  Jay Civelli  <jcivelli@chromium.org>

        Reviewed by Adam Barth.

        Added convenience methods to convert from a byte to hex ASCII digit
        characters and vice-versa.
        https://bugs.webkit.org/show_bug.cgi?id=59834

        * wtf/ASCIICType.h:
        (WTF::toASCIIHexValue):
        (WTF::lowerNibbleToASCIIHexDigit):
        (WTF::upperNibbleToASCIIHexDigit):

2011-05-05  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Benjamin Poulain.

        [Qt] Make QtWebKit build when using gcc 4.6.0
        https://bugs.webkit.org/show_bug.cgi?id=60265

        If QtWebKit is compiled with gcc 4.6.0 or later we don't want to deactivate
        the c++0x support because it works.

        * JavaScriptCore.pro:

2011-05-04  Fridrich Strba  <fridrich.strba@bluewin.ch>

        Reviewed by Geoffrey Garen.

        Port MachineStackMarker.cpp to Windows x64
        https://bugs.webkit.org/show_bug.cgi?id=60216

        * heap/MachineStackMarker.cpp:
        (JSC::getPlatformThreadRegisters): the CONTEXT struct is usable also
        on 64-bit Windows.
        (JSC::otherThreadStackPointer): return the Rsp register on Windows x64.

2011-05-04  Fridrich Strba  <fridrich.strba@bluewin.ch>

        Reviewed by Martin Robinson.

        Link libjavascriptcoregtk on Windows with winmm.dll
        https://bugs.webkit.org/show_bug.cgi?id=60215

        * GNUmakefile.am:

2011-05-04  Tao Bai  <michaelbai@chromium.org>

        Reviewed by David Kilzer.

        Populate touch-icon url to FrameLoaderClient
        https://bugs.webkit.org/show_bug.cgi?id=59143

        * Configurations/FeatureDefines.xcconfig:

2011-05-03  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        <rdar://problem/9366557> Various crashes due to bad DFG codegen at canalplus.fr

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::checkArgumentTypes): Removed a stray line of
        code that accidentally survived the conversion to a switch statement,
        causing a lot of important code not to run most of the time.

        Since this is not a trivial finger-picking mistake, I will not call it a
        typo.

2011-05-04  Adam Roben  <aroben@apple.com>

        Another attempted build fix

        * wtf/OwnPtr.h:
        (WTF::OwnPtr::operator==):
        (WTF::OwnPtr::operator!=):
        * wtf/PassOwnPtr.h:
        (WTF::PassOwnPtr::operator==):
        (WTF::PassOwnPtr::operator!=):
        Added a return statement. And made a tweak based on a suggestion from Anders Carlsson.

2011-05-04  Adam Roben  <aroben@apple.com>

        Try to fix Leopard, Qt, and probably others

        * wtf/OwnPtr.h:
        (WTF::OwnPtr::operator==):
        (WTF::OwnPtr::operator!=):
        * wtf/PassOwnPtr.h:
        (WTF::PassOwnPtr::operator==):
        (WTF::PassOwnPtr::operator!=):
        Try to get the compiler not to instantiate these function templates unnecessarily.

2011-05-03  Adam Roben  <aroben@apple.com>

        Disallow equality comparisons between [Pass]OwnPtrs

        If you have two OwnPtrs that are equal, you've already lost. (Unless you're doing something
        really sneaky, in which case you should stop!)

        Fixes <http://webkit.org/b/60053> Testing OwnPtrs for equality should cause a compiler error

        Reviewed by Anders Carlsson and Antti Koivisto.

        * wtf/OwnPtr.h:
        (WTF::OwnPtr::operator==):
        (WTF::OwnPtr::operator!=):
        * wtf/PassOwnPtr.h:
        (WTF::PassOwnPtr::operator==):
        (WTF::PassOwnPtr::operator!=):
        Added private equality operators that fail to compile when used. (When not used, the
        compiler will skip over them because they are function templates.)

2011-05-04  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Gavin Barraclough.

        JITArithmetic.cpp produces a warning on a unused variable.
        https://bugs.webkit.org/show_bug.cgi?id=60060

        Just properly use what we already have converted.

        * jit/JITArithmetic.cpp:
        (JSC::JIT::emitSlow_op_add):
        (JSC::JIT::emitSlow_op_mul):

2011-05-04  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Geoffrey Garen.

        JITPropertyAccess produces a unused but set variable warning in gcc 4.6.0.
        https://bugs.webkit.org/show_bug.cgi?id=60050

        This patch fix a compilation warning. The new warning scenario -Wunused-but-set-variable
        in gcc 4.6.0 is included in -Wall and therefore stops the compilation when warnings are treated
        as errors. The patch introduces a new macro ASSERT_JIT_OFFSET_UNUSED and ASSERT_WITH_MESSAGE_UNUSED
        which copy the idea of ASSERT_UNUSED.

        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::emit_op_put_by_id):
        * wtf/Assertions.h:
        (assertWithMessageUnused):

2011-04-29  Jer Noble  <jer.noble@apple.com>

        Reviewed by Eric Seidel.

        Implement FULLSCREEN_API on Windows, Part 4: Enable it
        https://bugs.webkit.org/show_bug.cgi?id=59798

        * wtf/Platform.h: Set ENABLE_FULLSCREEN_API on win.

2011-05-03  Alexis Menard  <alexis.menard@openbossa.org>

        Reviewed by Eric Seidel.

        Unused but set variable warning in MacroAssemberX86_64
        https://bugs.webkit.org/show_bug.cgi?id=59482

        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::call):
        (JSC::MacroAssemblerX86_64::tailRecursiveCall):
        (JSC::MacroAssemblerX86_64::makeTailRecursiveCall):

2011-05-03  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make malloc validation useful
        https://bugs.webkit.org/show_bug.cgi?id=57502

        Reland this patch (rolled out in 82905) without
        turning it on by default.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * wtf/FastMalloc.cpp:
        (WTF::tryFastMalloc):
        (WTF::fastMalloc):
        (WTF::tryFastCalloc):
        (WTF::fastCalloc):
        (WTF::fastFree):
        (WTF::tryFastRealloc):
        (WTF::fastRealloc):
        (WTF::fastMallocSize):
        (WTF::TCMalloc_PageHeap::isScavengerSuspended):
        (WTF::TCMalloc_PageHeap::scheduleScavenger):
        (WTF::TCMalloc_PageHeap::suspendScavenger):
        (WTF::TCMalloc_PageHeap::signalScavenger):
        (WTF::TCMallocStats::malloc):
        (WTF::TCMallocStats::free):
        (WTF::TCMallocStats::fastCalloc):
        (WTF::TCMallocStats::tryFastCalloc):
        (WTF::TCMallocStats::calloc):
        (WTF::TCMallocStats::fastRealloc):
        (WTF::TCMallocStats::tryFastRealloc):
        (WTF::TCMallocStats::realloc):
        (WTF::TCMallocStats::fastMallocSize):
        * wtf/FastMalloc.h:
        (WTF::Internal::fastMallocValidationHeader):
        (WTF::Internal::fastMallocValidationSuffix):
        (WTF::Internal::fastMallocMatchValidationType):
        (WTF::Internal::setFastMallocMatchValidationType):
        (WTF::fastMallocMatchValidateFree):
        (WTF::fastMallocValidate):

2011-05-03  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Anders Carlsson.

        Compile error with GCC 4.6.0, tries to assign unsigned& to bitfield
        https://bugs.webkit.org/show_bug.cgi?id=59261

        Use unary '+' to force proper type detection in template arguments
        with GCC 4.6.0. See bug report for more details.

        * runtime/Structure.cpp:
        (JSC::StructureTransitionTable::remove): Use '+' to force precise type detection.
        (JSC::StructureTransitionTable::add): ditto.
        * runtime/Structure.h:
        (JSC::StructureTransitionTable::keyForWeakGCMapFinalizer): ditto.

2011-05-03  Jessie Berlin  <jberlin@apple.com>

        Rubber-stamped by Adam Roben.

        Revert r85550 and r85575.

        Variables cannot be exported via the .def file. Instead, they should be annotated with
        JS_EXPORTDATA.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/Structure.cpp:
        (JSC::Structure::materializePropertyMap):
        * runtime/Structure.h:
        (JSC::Structure::typeInfo):
        (JSC::Structure::previousID):
        (JSC::Structure::propertyStorageCapacity):
        (JSC::Structure::propertyStorageSize):
        (JSC::Structure::get):
        (JSC::Structure::materializePropertyMapIfNecessary):

2011-05-02  Adam Roben  <aroben@apple.com>

        Allow implicit conversion from nullptr_t to PassOwnPtr

        This makes it a lot easier to write code that just wants a null PassOwnPtr, especially in
        strict PassOwnPtr mode.

        Fixes <http://webkit.org/b/59964> Implicit conversion from std::nullptr_t to PassOwnPtr
        doesn't work, but should

        Reviewed by Adam Barth.

        * wtf/PassOwnPtr.h:
        (WTF::PassOwnPtr::PassOwnPtr): Added a non-explicit constructor that takes a nullptr_t.

        * wtf/MessageQueue.h:
        (WTF::::waitForMessageFilteredWithTimeout):
        (WTF::::tryGetMessage):
        Use the new implicit conversion.

2011-05-02  Jessie Berlin  <jberlin@apple.com>

        Rubber-stamped by Oliver Hunt.

        Remove an assertion that Windows was hitting on launch.

        * runtime/Structure.cpp:
        (JSC::Structure::materializePropertyMap):
        * runtime/Structure.h:
        (JSC::Structure::typeInfo):
        (JSC::Structure::previousID):
        (JSC::Structure::propertyStorageCapacity):
        (JSC::Structure::propertyStorageSize):
        (JSC::Structure::get):
        (JSC::Structure::materializePropertyMapIfNecessary):

2011-05-02  Mark Rowe  <mrowe@apple.com>

        Reviewed by Geoff Garen.

        <rdar://problem/9371948> JavaScriptCore should build with GCC 4.2

        * Configurations/CompilerVersion.xcconfig:

2011-05-02  Gavin Barraclough  <barraclough@apple.com>

        ARMv7 build fix.

        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::Jump::link):
        (JSC::AbstractMacroAssembler::Jump::linkTo):

2011-05-02  Oliver Hunt  <oliver@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-05-02  Michael Saboff  <msaboff@apple.com>

        Reviewed by Geoffrey Garen.

        crash in JSC::RegExp::match
        https://bugs.webkit.org/show_bug.cgi?id=58922

        Cleared chained backtrack data label when linking label even if that 
        label doesn't chain itself.  This is needed so that subsequent 
        backtrack data labels point to the next outer paren and not within 
        the current paren.

        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::TermGenerationState::linkDataLabelToBacktrackIfExists):

2011-05-02  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Tiny bit of heap cleanup.

        * heap/MarkedBlock.h:
        (JSC::MarkedBlock::contains): Tightened up an assertion and a comment.

        * heap/MarkedSpace.h:
        (JSC::MarkedSpace::globalData):
        (JSC::MarkedSpace::highWaterMark):
        (JSC::MarkedSpace::setHighWaterMark): Moved inlines out of the class
        definition, for better clarity.

2011-05-02  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Correct marking of interpreter data in mixed mode builds
        https://bugs.webkit.org/show_bug.cgi?id=59962

        We had a few places in mixed mode builds where we would not
        track data used by the interpreter for marking.  This patch
        corrects the problem and adds a number of assertions to catch
        live Structures being collected.

        * JavaScriptCore.exp:
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::ARMInstructionFormatter::debugOffset):
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addPropertyAccessInstruction):
        (JSC::CodeBlock::addGlobalResolveInstruction):
        (JSC::CodeBlock::addStructureStubInfo):
        (JSC::CodeBlock::addGlobalResolveInfo):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitResolve):
        (JSC::BytecodeGenerator::emitResolveWithBase):
        (JSC::BytecodeGenerator::emitGetById):
        (JSC::BytecodeGenerator::emitPutById):
        (JSC::BytecodeGenerator::emitDirectPutById):
        * runtime/Structure.cpp:
        (JSC::Structure::materializePropertyMap):
        * runtime/Structure.h:
        (JSC::Structure::typeInfo):
        (JSC::Structure::previousID):
        (JSC::Structure::propertyStorageCapacity):
        (JSC::Structure::propertyStorageSize):
        (JSC::Structure::get):
        (JSC::Structure::materializePropertyMapIfNecessary):

2011-05-02  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Alexey Proskuryakov.

        Use native NullPtr when using GCC 4.6.0 and C++0x
        https://bugs.webkit.org/show_bug.cgi?id=59252

        GCC 4.6.0 has nullptr support, use it when possible.

        * wtf/NullPtr.cpp: include config.h to pull in Platform.h before
        NullPtr.h, since we need the GCC_VERSION_AT_LEAST definition.
        * wtf/NullPtr.h: check for GCC >= 4.6.0 and C++0x in order to
        use native nullptr.

2011-05-02  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=59950
        Clean up AssemblerBuffer to use a Vector internally.

        AssemblerBuffer handles reallocing a byte array itself - stop that.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::executableCopy):
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerLabel::AssemblerLabel):
        (JSC::AssemblerLabel::labelAtOffset):
        (JSC::AssemblerBuffer::AssemblerBuffer):
        (JSC::AssemblerBuffer::~AssemblerBuffer):
        (JSC::AssemblerBuffer::isAvailable):
        (JSC::AssemblerBuffer::ensureSpace):
        (JSC::AssemblerBuffer::isAligned):
        (JSC::AssemblerBuffer::putIntegral):
        (JSC::AssemblerBuffer::putIntegralUnchecked):
        (JSC::AssemblerBuffer::putByteUnchecked):
        (JSC::AssemblerBuffer::putByte):
        (JSC::AssemblerBuffer::putShortUnchecked):
        (JSC::AssemblerBuffer::putShort):
        (JSC::AssemblerBuffer::putIntUnchecked):
        (JSC::AssemblerBuffer::putInt):
        (JSC::AssemblerBuffer::putInt64Unchecked):
        (JSC::AssemblerBuffer::putInt64):
        (JSC::AssemblerBuffer::codeSize):
        (JSC::AssemblerBuffer::label):
        (JSC::AssemblerBuffer::executableCopy):
        (JSC::AssemblerBuffer::rewindToLabel):
        (JSC::AssemblerBuffer::debugOffset):
        (JSC::AssemblerBuffer::append):
        (JSC::AssemblerBuffer::grow):
        * assembler/AssemblerBufferWithConstantPool.h:
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::linkCall):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::X86InstructionFormatter::rewindToLabel):

2011-05-02  Jeff Miller  <jeffm@apple.com>

        Reviewed by Alexy Proskuryakov.

        Avoid potential buffer overflow in WTFLog() and WTFLogVerbose()
        https://bugs.webkit.org/show_bug.cgi?id=59949

        * wtf/Assertions.cpp: Check for 0 or empty format string in WTFLog() and WTFLogVerbose().

2011-05-02  Adam Barth  <abarth@webkit.org>

        Reviewed by Alexey Proskuryakov.

        StringImpl::endsWith has some insane code
        https://bugs.webkit.org/show_bug.cgi?id=59900

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::endsWith):
            - m_data shadows a member variable of the same name.

2011-05-02  Gabor Loki  <loki@webkit.org>

        Buildfix for ARM after r85448

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::loadBranchTarget):

2011-05-01  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Strict-mode only reserved words not reserved
        https://bugs.webkit.org/show_bug.cgi?id=55342

        Fix line number tracking when we rollback the lexer.

        * parser/JSParser.cpp:
        (JSC::JSParser::parseSourceElements):

2011-05-01  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        ES5 Strict mode does not allow getter and setter for same propId
        https://bugs.webkit.org/show_bug.cgi?id=57295

        Simplify and correct the logic for strict mode object literals.

        * parser/JSParser.cpp:
        (JSC::JSParser::parseStrictObjectLiteral):

2011-05-01  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Assigning to function identifier under strict should throw
        https://bugs.webkit.org/show_bug.cgi?id=59289

        Add logic to StaticScopeObject to ensure we don't silently consume
        writes to constant properties.

        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::put):

2011-05-01  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=59903
        Use AssemblerLabel throughout Assembler classes, AssemblerBuffer

        Creating a lable() into the AssemblerBuffer should return an AssemblerLabel,
        not an unsigned int.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::executableCopy):
        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::blx):
        (JSC::ARMAssembler::label):
        (JSC::ARMAssembler::loadBranchTarget):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::b):
        (JSC::ARMv7Assembler::blx):
        (JSC::ARMv7Assembler::bx):
        (JSC::ARMv7Assembler::label):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::label):
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::label):
        * assembler/AssemblerBufferWithConstantPool.h:
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::label):
        (JSC::MIPSAssembler::relocateJumps):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::loadConstant):
        (JSC::SH4Assembler::loadConstantUnReusable):
        (JSC::SH4Assembler::call):
        (JSC::SH4Assembler::jmp):
        (JSC::SH4Assembler::jne):
        (JSC::SH4Assembler::je):
        (JSC::SH4Assembler::label):
        (JSC::SH4Assembler::oneShortOp):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::call):
        (JSC::X86Assembler::jmp_r):
        (JSC::X86Assembler::label):
        (JSC::X86Assembler::X86InstructionFormatter::immediateRel32):
        (JSC::X86Assembler::X86InstructionFormatter::label):

2011-05-01  Adam Barth  <abarth@webkit.org>

        Reviewed by David Levin.

        Enable strict mode for OwnPtr and PassOwnPtr
        https://bugs.webkit.org/show_bug.cgi?id=59428

        * wtf/OwnPtr.h:

2011-05-01  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Adam Barth.

        Enable strict OwnPtr for PLATFORM(WIN)
        https://bugs.webkit.org/show_bug.cgi?id=59881

        * wtf/OwnPtr.h:

2011-05-01  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        https://bugs.webkit.org/show_bug.cgi?id=59896
        Remove JmpSrc/JmpDst types.

        The JmpSrc/JmpDst classes predate the MacroAssembler interface. Having these
        object be per-assembler in unhelpful, causes unnecessary code duplication,
        and prevents the AssemblerBuffer from providing a richer type for labels.
        The limited semantic meaning that they did convey is undermined by the manner
        in which their meanings have been overloaded (use of JmpSrc for Call, JmpDst
        for data labels).

        Jumps on ARMv7 have had additional information added to the object via the
        ARMv7 JmpSrc. This data should probably be in the instruction stream. This
        patch does not fix the problem, and moves the data (ifdefed) to
        AbstractMacroAssembler::Jump (which is effectively where it was before!).
        This at least closes the hole such that no further data may be added to JmpSrc,
        but this is unfortunate, and should be cleaned up.

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::blx):
        (JSC::ARMAssembler::label):
        (JSC::ARMAssembler::align):
        (JSC::ARMAssembler::loadBranchTarget):
        (JSC::ARMAssembler::jmp):
        (JSC::ARMAssembler::linkPointer):
        (JSC::ARMAssembler::linkJump):
        (JSC::ARMAssembler::linkCall):
        (JSC::ARMAssembler::getRelocatedAddress):
        (JSC::ARMAssembler::getDifferenceBetweenLabels):
        (JSC::ARMAssembler::getCallReturnOffset):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::b):
        (JSC::ARMv7Assembler::blx):
        (JSC::ARMv7Assembler::bx):
        (JSC::ARMv7Assembler::label):
        (JSC::ARMv7Assembler::align):
        (JSC::ARMv7Assembler::getRelocatedAddress):
        (JSC::ARMv7Assembler::getDifferenceBetweenLabels):
        (JSC::ARMv7Assembler::getCallReturnOffset):
        (JSC::ARMv7Assembler::linkJump):
        (JSC::ARMv7Assembler::linkCall):
        (JSC::ARMv7Assembler::linkPointer):
        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::Label::isSet):
        (JSC::AbstractMacroAssembler::Call::Call):
        (JSC::AbstractMacroAssembler::Jump::Jump):
        (JSC::AbstractMacroAssembler::Jump::link):
        (JSC::AbstractMacroAssembler::Jump::linkTo):
        (JSC::AbstractMacroAssembler::linkPointer):
        (JSC::AbstractMacroAssembler::getLinkerAddress):
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerLabel::AssemblerLabel):
        (JSC::AssemblerLabel::isSet):
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::patch):
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::label):
        (JSC::MIPSAssembler::align):
        (JSC::MIPSAssembler::getRelocatedAddress):
        (JSC::MIPSAssembler::getDifferenceBetweenLabels):
        (JSC::MIPSAssembler::getCallReturnOffset):
        (JSC::MIPSAssembler::linkJump):
        (JSC::MIPSAssembler::linkCall):
        (JSC::MIPSAssembler::linkPointer):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::branchDouble):
        (JSC::MacroAssemblerARMv7::branchDoubleZeroOrNaN):
        (JSC::MacroAssemblerARMv7::jump):
        (JSC::MacroAssemblerARMv7::nearCall):
        (JSC::MacroAssemblerARMv7::call):
        (JSC::MacroAssemblerARMv7::ret):
        (JSC::MacroAssemblerARMv7::tailRecursiveCall):
        (JSC::MacroAssemblerARMv7::makeBranch):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::nearCall):
        (JSC::MacroAssemblerMIPS::call):
        (JSC::MacroAssemblerMIPS::tailRecursiveCall):
        (JSC::MacroAssemblerMIPS::branchTrue):
        (JSC::MacroAssemblerMIPS::branchFalse):
        (JSC::MacroAssemblerMIPS::branchEqual):
        (JSC::MacroAssemblerMIPS::branchNotEqual):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::call):
        (JSC::SH4Assembler::jmp):
        (JSC::SH4Assembler::jne):
        (JSC::SH4Assembler::je):
        (JSC::SH4Assembler::label):
        (JSC::SH4Assembler::align):
        (JSC::SH4Assembler::linkJump):
        (JSC::SH4Assembler::linkCall):
        (JSC::SH4Assembler::linkPointer):
        (JSC::SH4Assembler::getCallReturnOffset):
        (JSC::SH4Assembler::getRelocatedAddress):
        (JSC::SH4Assembler::getDifferenceBetweenLabels):
        (JSC::SH4Assembler::patchPointer):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::call):
        (JSC::X86Assembler::jmp):
        (JSC::X86Assembler::jmp_r):
        (JSC::X86Assembler::jne):
        (JSC::X86Assembler::jnz):
        (JSC::X86Assembler::je):
        (JSC::X86Assembler::jz):
        (JSC::X86Assembler::jl):
        (JSC::X86Assembler::jb):
        (JSC::X86Assembler::jle):
        (JSC::X86Assembler::jbe):
        (JSC::X86Assembler::jge):
        (JSC::X86Assembler::jg):
        (JSC::X86Assembler::ja):
        (JSC::X86Assembler::jae):
        (JSC::X86Assembler::jo):
        (JSC::X86Assembler::jp):
        (JSC::X86Assembler::js):
        (JSC::X86Assembler::jCC):
        (JSC::X86Assembler::label):
        (JSC::X86Assembler::labelFor):
        (JSC::X86Assembler::align):
        (JSC::X86Assembler::linkJump):
        (JSC::X86Assembler::linkCall):
        (JSC::X86Assembler::linkPointer):
        (JSC::X86Assembler::getCallReturnOffset):
        (JSC::X86Assembler::getRelocatedAddress):
        (JSC::X86Assembler::getDifferenceBetweenLabels):
        (JSC::X86Assembler::rewindToLabel):
        (JSC::X86Assembler::X86InstructionFormatter::immediateRel32):
        (JSC::X86Assembler::X86InstructionFormatter::rewindToLabel):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::atJumpTarget):
        (JSC::JIT::emitGetVirtualRegister):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_jmp):
        (JSC::JIT::emit_op_jfalse):
        (JSC::JIT::emit_op_jeq_null):
        (JSC::JIT::emit_op_jneq_null):
        (JSC::JIT::emit_op_jneq_ptr):
        (JSC::JIT::emit_op_jsr):
        (JSC::JIT::emit_op_jtrue):
        (JSC::JIT::emit_op_jmp_scopes):

2011-05-01  Chao-ying Fu  <fu@mips.com>

        Reviewed by Eric Seidel.

        Fix MIPS build due to the split of "Condition" enum
        https://bugs.webkit.org/show_bug.cgi?id=59407

        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::debugOffset):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::branch32):
        (JSC::MacroAssemblerMIPS::compare32):

2011-04-30  Adam Barth  <abarth@webkit.org>

        Reviewed by Adam Barth.

        Enable strict OwnPtr for GTK
        https://bugs.webkit.org/show_bug.cgi?id=59861

        * wtf/OwnPtr.h:

2011-04-30  Gavin Barraclough  <barraclough@apple.com>

        ARMv7 build fix.

        * assembler/AssemblerBufferWithConstantPool.h:

2011-04-30  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 59869 - AssemblerBuffer cleanup - disambiguate size()

        The method size() is called on the AssemblerBuffer both to acquire
        the complete size of the code, and to get a position to use as a
        label into the code. Instead, add an explicit 'label' method.

        * assembler/ARMAssembler.cpp:
        (JSC::ARMAssembler::executableCopy):
        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::blx):
        (JSC::ARMAssembler::codeSize):
        (JSC::ARMAssembler::label):
        (JSC::ARMAssembler::loadBranchTarget):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::b):
        (JSC::ARMv7Assembler::blx):
        (JSC::ARMv7Assembler::bx):
        (JSC::ARMv7Assembler::label):
        (JSC::ARMv7Assembler::codeSize):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::codeSize):
        (JSC::ARMv7Assembler::ARMInstructionFormatter::data):
        * assembler/AbstractMacroAssembler.h:
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::codeSize):
        (JSC::AssemblerBuffer::label):
        * assembler/AssemblerBufferWithConstantPool.h:
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::LinkBuffer):
        (JSC::LinkBuffer::linkCode):
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::newJmpSrc):
        (JSC::MIPSAssembler::appendJump):
        (JSC::MIPSAssembler::label):
        (JSC::MIPSAssembler::codeSize):
        (JSC::MIPSAssembler::relocateJumps):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::loadConstant):
        (JSC::SH4Assembler::loadConstantUnReusable):
        (JSC::SH4Assembler::call):
        (JSC::SH4Assembler::jmp):
        (JSC::SH4Assembler::jne):
        (JSC::SH4Assembler::je):
        (JSC::SH4Assembler::label):
        (JSC::SH4Assembler::executableCopy):
        (JSC::SH4Assembler::oneShortOp):
        (JSC::SH4Assembler::codeSize):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::call):
        (JSC::X86Assembler::jmp_r):
        (JSC::X86Assembler::codeSize):
        (JSC::X86Assembler::label):
        (JSC::X86Assembler::executableCopy):
        (JSC::X86Assembler::X86InstructionFormatter::immediateRel32):
        (JSC::X86Assembler::X86InstructionFormatter::codeSize):
        (JSC::X86Assembler::X86InstructionFormatter::label):
        (JSC::X86Assembler::X86InstructionFormatter::executableCopy):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::compile):

2011-04-29  Adam Barth  <abarth@webkit.org>

        Attempt to fix the Windows build.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-04-29  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        CSP script-src should block eval
        https://bugs.webkit.org/show_bug.cgi?id=59850

        ggaren recommend a different approach to this patch, essentially
        installing a new function for function-eval and changing the AST
        representation of operator-eval to call function-eval.  However, I'm
        not sure that approach is workable because the ASTBuilder doesn't know
        about global objects, and there is added complication due to the cache.

        This approach is more dynamic, adding a branch in EvalExecutable to
        detect whether eval is current disabled in the lexical scope.  The spec
        is slightly unclear about whether we should return undefined or throw
        an exception.  I've asked Brandon to clarify the spec, but throwing an
        exception seems natural.

        * JavaScriptCore.exp:
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::disableEval):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObject):
        (JSC::JSGlobalObject::isEvalEnabled):

2011-04-29  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=59847
        Remove linkOffset from LinkBuffer

        This is redundant since removal of recompilation for exception info.

        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::LinkBuffer):
        (JSC::LinkBuffer::linkCode):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * jit/JIT.cpp:
        (JSC::JIT::JIT):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        (JSC::JIT::compile):
        (JSC::JIT::compileCTIMachineTrampolines):
        (JSC::JIT::compileCTINativeCall):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::finalize):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::compile):

2011-04-29  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt & Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=59221
        [RegexFuzz] Regression blocking testing

        Okay, so the bug here is that when, in the case of a TypeParentheticalAssertion
        node, emitDisjunction recursively calls to itself to emit the nested disjunction
        the value of parenthesesInputCountAlreadyChecked is bogus (doesn't take into
        account the uncheck that has just taken place).

        Also, the special handling given to countToCheck in the case of parenthetical
        assertions is nonsense, delete it, along with the isParentheticalAssertion argument.

        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::ByteCompiler::emitDisjunction):

2011-04-29  Csaba Osztrogonác  <ossy@webkit.org>

        Reviewed by Adam Barth.

        Enable strict OwnPtr for Qt
        https://bugs.webkit.org/show_bug.cgi?id=59667

        * wtf/OwnPtr.h:

2011-04-29  Dean Jackson  <dino@apple.com>

        Reviewed by Simon Fraser.

        Add ENABLE macro for WebKitAnimation
        https://bugs.webkit.org/show_bug.cgi?id=59729

        Add new feature to toggle WebKit Animation API.

        * Configurations/FeatureDefines.xcconfig:

2011-04-28  Sam Weinig  <sam@webkit.org>

        Reviewed by Mark Rowe.

        Install testapi.js along side testapi
        https://bugs.webkit.org/show_bug.cgi?id=59773

        * JavaScriptCore.xcodeproj/project.pbxproj:
        Add new build phase to copy testapi.js to install path of testapi
        on install.

2011-04-28  David Levin  <levin@chromium.org>

        Reviewed by Adam Barth.

        Remove IMAGE_RESIZER related code.
        https://bugs.webkit.org/show_bug.cgi?id=59735

        * Configurations/FeatureDefines.xcconfig:

2011-04-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=59763
        DFG JIT - Unify FPRReg & FPRegisterID

        (Following on from GPRReg/RegisterID unification).

        * dfg/DFGFPRInfo.h:
        (JSC::DFG::FPRInfo::toRegister):
        (JSC::DFG::FPRInfo::debugName):
        * dfg/DFGGPRInfo.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::checkConsistency):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::boxDouble):
        (JSC::DFG::JITCodeGenerator::unboxDouble):
        (JSC::DFG::JITCodeGenerator::flushRegisters):
        (JSC::DFG::JITCodeGenerator::isFlushed):
        (JSC::DFG::JITCodeGenerator::setupTwoStubArgs):
        (JSC::DFG::JITCodeGenerator::setupStubArguments):
        (JSC::DFG::JITCodeGenerator::callOperation):
        (JSC::DFG::GPRResult::lockedResult):
        (JSC::DFG::FPRResult::lockedResult):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::EntryLocation::EntryLocation):
        (JSC::DFG::NonSpeculativeJIT::valueToNumber):
        (JSC::DFG::NonSpeculativeJIT::valueToInt32):
        (JSC::DFG::NonSpeculativeJIT::numberToInt32):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        (JSC::DFG::NonSpeculativeJIT::silentSpillAllRegisters):
        (JSC::DFG::NonSpeculativeJIT::silentFillAllRegisters):
        * dfg/DFGRegisterBank.h:
        (JSC::DFG::RegisterBank::iterator::regID):
        (JSC::DFG::RegisterBank::iterator::debugName):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculationCheck::SpeculationCheck):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:

2011-04-28  David Kilzer  <ddkilzer@apple.com>

        Revert "<http://webkit.org/b/59705> WTF::postTimer() leaks a CFRunLoopTimerRef every time it's called"

        This reverts commit r85195.  It was crashing DumpRenderTree on Lion.

        * wtf/mac/MainThreadMac.mm:
        (WTF::postTimer):

2011-04-28  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Remove WML
        https://bugs.webkit.org/show_bug.cgi?id=59678

        Remove the WML configuration option from the Mac build system.

        * Configurations/FeatureDefines.xcconfig:

2011-04-28  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r85233 and r85235.
        http://trac.webkit.org/changeset/85233
        http://trac.webkit.org/changeset/85235
        https://bugs.webkit.org/show_bug.cgi?id=59754

        Causes issues with jsc. (Requested by dave_levin on #webkit).

        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * jit/ExecutableAllocator.h:
        (JSC::ExecutablePool::ExecutablePool):
        * parser/SourceProvider.h:
        (JSC::SourceProvider::SourceProvider):
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp):
        * wtf/CMakeLists.txt:
        * wtf/RefCounted.h:
        (WTF::RefCountedBase::ref):
        (WTF::RefCountedBase::hasOneRef):
        (WTF::RefCountedBase::refCount):
        (WTF::RefCountedBase::derefBase):
        * wtf/SizeLimits.cpp:
        * wtf/ThreadRestrictionVerifier.h: Removed.
        * wtf/text/CString.h:
        (WTF::CStringBuffer::CStringBuffer):

2011-04-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 59740 - DFG JIT - Unify GPRReg & RegisterID

        Currently we use a mix of enum values throughout the DFG JIT to  represent
        gpr registers - the RegisterID provided by the MacroAssembler, and the
        GPRReg enum giving the sequential register set over which the RegisterBank
        allocates. Unify the two.

        Patch to unify FPRReg in a similar fashion will follow.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * dfg/DFGFPRInfo.h: Added.
        (JSC::DFG::next):
        (JSC::DFG::FPRBankInfo::toRegister):
        (JSC::DFG::FPRBankInfo::toIndex):
        * dfg/DFGGPRInfo.h: Added.
        (JSC::DFG::GPRInfo::toRegister):
        (JSC::DFG::GPRInfo::toIndex):
        (JSC::DFG::GPRInfo::debugName):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillInteger):
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        (JSC::DFG::JITCodeGenerator::dump):
        (JSC::DFG::JITCodeGenerator::checkConsistency):
        (JSC::DFG::GPRTemporary::GPRTemporary):
        (JSC::DFG::FPRTemporary::FPRTemporary):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::boxDouble):
        (JSC::DFG::JITCodeGenerator::unboxDouble):
        (JSC::DFG::JITCodeGenerator::spill):
        (JSC::DFG::JITCodeGenerator::flushRegisters):
        (JSC::DFG::JITCodeGenerator::isFlushed):
        (JSC::DFG::JITCodeGenerator::bitOp):
        (JSC::DFG::JITCodeGenerator::shiftOp):
        (JSC::DFG::JITCodeGenerator::setupTwoStubArgs):
        (JSC::DFG::JITCodeGenerator::setupStubArguments):
        (JSC::DFG::JITCodeGenerator::callOperation):
        (JSC::DFG::IntegerOperand::gpr):
        (JSC::DFG::DoubleOperand::gpr):
        (JSC::DFG::GPRTemporary::gpr):
        (JSC::DFG::FPRTemporary::gpr):
        (JSC::DFG::GPRResult::lockedResult):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::fillInt32ToInteger):
        (JSC::DFG::JITCompiler::fillToJS):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        (JSC::DFG::JITCompiler::compileFunction):
        (JSC::DFG::JITCompiler::jitAssertIsInt32):
        (JSC::DFG::JITCompiler::jitAssertIsJSInt32):
        (JSC::DFG::JITCompiler::jitAssertIsJSNumber):
        (JSC::DFG::JITCompiler::jitAssertIsJSDouble):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::preserveReturnAddressAfterCall):
        (JSC::DFG::JITCompiler::restoreReturnAddressBeforeReturn):
        (JSC::DFG::JITCompiler::emitGetFromCallFrameHeaderPtr):
        (JSC::DFG::JITCompiler::emitPutToCallFrameHeader):
        (JSC::DFG::JITCompiler::emitPutImmediateToCallFrameHeader):
        (JSC::DFG::JITCompiler::addressForGlobalVar):
        (JSC::DFG::JITCompiler::addressFor):
        (JSC::DFG::JITCompiler::tagFor):
        (JSC::DFG::JITCompiler::payloadFor):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::EntryLocation::EntryLocation):
        (JSC::DFG::NonSpeculativeJIT::valueToNumber):
        (JSC::DFG::NonSpeculativeJIT::valueToInt32):
        (JSC::DFG::NonSpeculativeJIT::numberToInt32):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        (JSC::DFG::NonSpeculativeJIT::silentSpillGPR):
        (JSC::DFG::NonSpeculativeJIT::silentSpillFPR):
        (JSC::DFG::NonSpeculativeJIT::silentFillGPR):
        (JSC::DFG::NonSpeculativeJIT::silentFillFPR):
        (JSC::DFG::NonSpeculativeJIT::silentSpillAllRegisters):
        (JSC::DFG::NonSpeculativeJIT::silentFillAllRegisters):
        * dfg/DFGRegisterBank.h:
        (JSC::DFG::RegisterBank::allocate):
        (JSC::DFG::RegisterBank::retain):
        (JSC::DFG::RegisterBank::release):
        (JSC::DFG::RegisterBank::lock):
        (JSC::DFG::RegisterBank::unlock):
        (JSC::DFG::RegisterBank::isLocked):
        (JSC::DFG::RegisterBank::name):
        (JSC::DFG::RegisterBank::iterator::name):
        (JSC::DFG::RegisterBank::iterator::isLocked):
        (JSC::DFG::RegisterBank::iterator::release):
        (JSC::DFG::RegisterBank::iterator::gpr):
        (JSC::DFG::RegisterBank::iterator::debugName):
        (JSC::DFG::RegisterBank::iterator::operator++):
        (JSC::DFG::RegisterBank::iterator::operator!=):
        (JSC::DFG::RegisterBank::iterator::index):
        (JSC::DFG::RegisterBank::iterator::iterator):
        (JSC::DFG::RegisterBank::begin):
        (JSC::DFG::RegisterBank::end):
        (JSC::DFG::RegisterBank::isLockedAtIndex):
        (JSC::DFG::RegisterBank::nameAtIndex):
        (JSC::DFG::RegisterBank::releaseAtIndex):
        (JSC::DFG::RegisterBank::allocateInternal):
        (JSC::DFG::RegisterBank::MapEntry::MapEntry):
        * dfg/DFGScoreBoard.h:
        (JSC::DFG::ScoreBoard::~ScoreBoard):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculationCheck::SpeculationCheck):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::compilePeepHoleBranch):
        (JSC::DFG::SpeculativeJIT::compile):
        (JSC::DFG::SpeculativeJIT::checkArgumentTypes):
        (JSC::DFG::SpeculativeJIT::initializeVariableTypes):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculateIntegerOperand::gpr):

2011-04-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove evil addressOfStructure() function
        https://bugs.webkit.org/show_bug.cgi?id=59739

        Remove the addressOfStructure function from JSCell, and update
        callsites to use the same logic as testPrototype()

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdProtoList):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdProtoList):
        * runtime/JSCell.h:

2011-04-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Clean up testPrototype()
        https://bugs.webkit.org/show_bug.cgi?id=59734

        Remove direct pointer to the inside of a GC object and just do
        the indirect load manually.  Doesn't effect sunspider but does
        clean up the code quite a bit, and simplifies the handling of
        GC values.

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::testPrototype):

2011-04-28  David Levin  <levin@chromium.org>

        Build fix.

        * wtf/RefCounted.h: Fix inverted ifdef.

2011-04-07  David Levin  <levin@chromium.org>

        Reviewed by Darin Adler.

        Add asserts to RefCounted to make sure ref/deref happens on the right thread.
        https://bugs.webkit.org/show_bug.cgi?id=31639

        * GNUmakefile.list.am: Added new files to the build.
        * JavaScriptCore.gypi: Ditto.
        * JavaScriptCore.vcproj/WTF/WTF.vcproj: Ditto.
        * JavaScriptCore.xcodeproj/project.pbxproj: Ditto.
        * jit/ExecutableAllocator.h:
        (JSC::ExecutablePool::ExecutablePool): Turned off checks for this
        due to not being able to figure out what was guarding it (bug 58091).
        * parser/SourceProvider.h:
        (JSC::SourceProvider::SourceProvider): Ditto.
        * runtime/RegExp.cpp:
        (JSC::RegExp::RegExp): Ditto.
        * wtf/CMakeLists.txt: Added new files to the build.
        * wtf/ThreadRestrictionVerifier.h: Added.
        Everything is done in the header to avoid the issue with exports
        that are only useful in debug but still needing to export them.
        * wtf/RefCounted.h:
        (WTF::RefCountedBase::ref): Added checks using the non thread safe verifier.
        and filed bug 58171 about making it stricter.
        (WTF::RefCountedBase::hasOneRef): Ditto.
        (WTF::RefCountedBase::refCount): Ditto.
        (WTF::RefCountedBase::setMutexForVerifier): Expose a way to change the checks to be based
        on a mutex. This is in the header to avoid adding more exports from JavaScriptCore.
        (WTF::RefCountedBase::deprecatedTurnOffVerifier): Temporary way to turn off verification.
        Filed bug 58174 to remove this method.
        (WTF::RefCountedBase::derefBase):
        * wtf/SizeLimits.cpp: Adjusted the debug size check for RefCounted.
        * wtf/text/CString.h:
        (WTF::CStringBuffer::CStringBuffer): Turned off checks for this while a fix is being
        done in Chromium's test_shell (bug 58093).

2011-04-28  Xan Lopez  <xlopez@igalia.com>

        Unreviewed attempt to fix the build.

        * GNUmakefile.am: add -lpthread.

2011-04-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Only need a single implementation of testPrototype
        https://bugs.webkit.org/show_bug.cgi?id=59724

        Remove excess copy of identical testPrototype() code

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::testPrototype):
        * jit/JITPropertyAccess32_64.cpp:

2011-04-28  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Martin Robinson.

        [Gtk] Split JSC and WebCore builds
        https://bugs.webkit.org/show_bug.cgi?id=19428

        Build JavaScriptCore as a libtool shared library instead of a
        private convenience library.

        * GNUmakefile.am: define new jsc library and adapt to new name for
        javascriptcore target.
        * GNUmakefile.list.am: ditto.

2011-04-28  David Kilzer  <ddkilzer@apple.com>

        <http://webkit.org/b/59705> WTF::postTimer() leaks a CFRunLoopTimerRef every time it's called

        Reviewed by Simon Fraser.

        * wtf/mac/MainThreadMac.mm:
        (WTF::postTimer): Use RetainPtr to plug the leak.

2011-04-27  Sam Weinig  <sam@webkit.org>

        Reviewed by David Kilzer.

        Add way to install testapi in production builds
        https://bugs.webkit.org/show_bug.cgi?id=59674

        * Configurations/TestAPI.xcconfig: Copied from Configurations/JavaScriptCore.xcconfig.
        Add configuration file for TestAPI. In addition to name, we now specify an install path
        and allow SKIP_INSTALL to be overridden by setting FORCE_TOOL_INSTALL.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        Remove in-project build settings and add missing configuration files. Added missing CompilerVersion.xcconfig
        file.

2011-04-27  Adam Barth  <abarth@webkit.org>

        Reviewed by David Levin.

        Enable strict OwnPtrs for Chromium
        https://bugs.webkit.org/show_bug.cgi?id=59666

        * wtf/OwnPtr.h:

2011-04-27  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Add ability to remove keys from weakmap API
        https://bugs.webkit.org/show_bug.cgi?id=59645

        Add JSWeakObjectMapRemove API

        * API/JSWeakObjectMapRefPrivate.cpp:
        * API/JSWeakObjectMapRefPrivate.h:
        * JavaScriptCore.exp:

2011-04-27  Adam Barth  <abarth@webkit.org>

        Reviewed by David Levin.

        Enable strict mode for OwnPtr
        https://bugs.webkit.org/show_bug.cgi?id=59428

        This patch enables strict mode for OwnPtr on PLATFORM(MAC) only.

        * wtf/OwnPtr.h:

2011-04-27  Steve Block  <steveblock@google.com>

        Reviewed by David Levin.

        Remove Android build system
        https://bugs.webkit.org/show_bug.cgi?id=48111

        This is to avoid the maintenance burden until the Android port is
        fully upstreamed.

        * Android.mk: Removed.
        * Android.v8.wtf.mk: Removed.

2011-04-27  Mark Rowe  <mrowe@apple.com>

        Fix 32-bit build after r85036.

        * wtf/Platform.h: USE(PLUGIN_HOST_PROCESS) is only true for 64-bit.

2011-04-27  Csaba Osztrogonác  <ossy@webkit.org>

        Unreviewed buildfix after r85036.

        Readd non-dead code.

        * wtf/OSAllocatorPosix.cpp:
        (WTF::OSAllocator::reserveAndCommit):

2011-04-27  Adam Barth  <abarth@webkit.org>

        Reviewed by Kenneth Russell.

        OwnPtr assignment operator should be private
        https://bugs.webkit.org/show_bug.cgi?id=59487

        Unfortunately we can't remove the copy constructor because of some
        detail about gcc.  (The issue is documented in a comment already.)

        * wtf/OwnPtr.h:

2011-04-26  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r84977.
        http://trac.webkit.org/changeset/84977
        https://bugs.webkit.org/show_bug.cgi?id=59568

        caused crashes on the SL WK2 bots (Requested by jessieberlin
        on #webkit).

        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::call):
        (JSC::MacroAssemblerX86_64::tailRecursiveCall):
        (JSC::MacroAssemblerX86_64::makeTailRecursiveCall):

2011-04-26  Kevin Ollivier  <kevino@theolliviers.com>

        Rubberstamped by Eric Seidel.

        Enable waf to be used to build other ports
        https://bugs.webkit.org/show_bug.cgi?id=58213

        * wscript:

2011-04-26  Sam Weinig  <sam@webkit.org>

        Reviewed by David Hyatt.

        Remove Datagrid from the tree
        https://bugs.webkit.org/show_bug.cgi?id=59543

        * Configurations/FeatureDefines.xcconfig:
        Remove feature.

2011-04-26  Adrienne Walker  <enne@google.com>

        Reviewed by Geoffrey Garen.

        Fix incorrect use of OwnPtr<T*> in GCActivityCallback
        https://bugs.webkit.org/show_bug.cgi?id=59559

        * runtime/GCActivityCallback.h:

2011-04-26  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Daniel Bates.

        Unused but set variable warning in MacroAssembelX86_64
        https://bugs.webkit.org/show_bug.cgi?id=59482

        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::call): do not declare the label
        variable if we are not going to use it.
        (JSC::MacroAssemblerX86_64::tailRecursiveCall): ditto.
        (JSC::MacroAssemblerX86_64::makeTailRecursiveCall): ditto.

2011-04-26  Dan Bernstein  <mitz@apple.com>

        Reviewed by Mark Rowe.

        Choose the compiler based on the Xcode version for Snow Leopard debug builds.

        * Configurations/Base.xcconfig:
        * Configurations/CompilerVersion.xcconfig: Added.

2011-04-25  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Nixed special finalizer handling for WebCore strings
        https://bugs.webkit.org/show_bug.cgi?id=59425
        
        SunSpider reports no change.
        
        Not needed anymore, since weak handles have finalizers.

        * runtime/JSString.cpp:
        (JSC::JSString::resolveRope):
        (JSC::JSString::resolveRopeSlowCase):
        (JSC::JSString::outOfMemory):
        (JSC::JSString::substringFromRope):
        (JSC::JSString::replaceCharacter): Updated for removal of union.

        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        (JSC::RopeBuilder::~JSString):
        (JSC::RopeBuilder::appendStringInConstruct):
        (JSC::RopeBuilder::appendValueInConstructAndIncrementLength): No need for
        union or special constructor anymore.

2011-04-26  Gabor Loki  <loki@webkit.org>

        Reviewed by Csaba Osztrogonác.

        Speeding up SVG filters with multicore (SMP) support
        https://bugs.webkit.org/show_bug.cgi?id=43903

        Some SVG filters execute a huge number of pixel manipulations, which
        cannot be sped up by graphics accelerators, since their algorithm is
        too complex. Using the power of Symmetric Multi Processing (SMP) we
        can split up a task to smaller (data independent) tasks, which can be
        executed independently.

        The ParallelJobs framework provides a simple way for distributed
        programming. The framework is based on WebKit's threading infrastructure,
        Open Multi-Processing's (OpenMP) API, and libdispatch API.

        * GNUmakefile.list.am:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/ParallelJobs.h: Added.
        (WTF::ParallelJobs::ParallelJobs):
        (WTF::ParallelJobs::numberOfJobs):
        (WTF::ParallelJobs::parameterForJob):
        (WTF::ParallelJobs::executeJobs):
        * wtf/ParallelJobsGeneric.cpp: Added.
        (WTF::ParallelEnvironment::ThreadPrivate::tryLockFor):
        (WTF::ParallelEnvironment::ThreadPrivate::executeJob):
        (WTF::ParallelEnvironment::ThreadPrivate::waitForFinish):
        (WTF::ParallelEnvironment::ThreadPrivate::workerThread):
        * wtf/ParallelJobsGeneric.h: Added.
        (WTF::ParallelEnvironment::ParallelEnvironment):
        (WTF::ParallelEnvironment::numberOfJobs):
        (WTF::ParallelEnvironment::parameterForJob):
        (WTF::ParallelEnvironment::executeJobs):
        (WTF::ParallelEnvironment::ThreadPrivate::ThreadPrivate):
        (WTF::ParallelEnvironment::ThreadPrivate::create):
        * wtf/ParallelJobsLibdispatch.h: Added.
        (WTF::ParallelEnvironment::ParallelEnvironment):
        (WTF::ParallelEnvironment::numberOfJobs):
        (WTF::ParallelEnvironment::parameterForJob):
        (WTF::ParallelEnvironment::executeJobs):
        * wtf/ParallelJobsOpenMP.h: Added.
        (WTF::ParallelEnvironment::ParallelEnvironment):
        (WTF::ParallelEnvironment::numberOfJobs):
        (WTF::ParallelEnvironment::parameterForJob):
        (WTF::ParallelEnvironment::executeJobs):
        * wtf/Platform.h:
        * wtf/wtf.pri:

2011-04-26  Mihai Parparita  <mihaip@chromium.org>

        Reviewed by Adam Barth.

        Turn off make built-in implicit rules for derived sources makefile
        https://bugs.webkit.org/show_bug.cgi?id=59418
        
        We don't use any of make's built-in implicit rules, turning them off
        speeds up parsing of the makefile.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * gyp/generate-derived-sources.sh:

2011-04-25  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Custom prototypes on DOM objects don't persist after garbage collection
        https://bugs.webkit.org/show_bug.cgi?id=59412
        
        SunSpider reports no change.
        
        The hasCustomProperties() check didn't check for a custom prototype.

        * runtime/JSObject.h:
        (JSC::JSObject::hasCustomProperties): Changed to delegate to Structure
        because it is the "truth" about an object's pedigree.

        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        * runtime/Structure.h:
        (JSC::Structure::didTransition): Track whether a Structure has ever
        transitioned for any reason. If so, we have to assume that the object
        holding it is custom in some way.

2011-04-25  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        https://bugs.webkit.org/show_bug.cgi?id=59405
        DFG JIT - add type speculation for integer & array types, for vars & args.

        If a var or argument is used as the base for a GetByVal or PutByVal access
        we are speculating that it is of type Array (we only generate code on the
        speculative path to perform array accesses). By typing the var or args slot
        as Array, and checking on entry to the function (in the case of args), and
        each time the local is written to, we can avoid a type check at each point
        the array is accessed. This will typically hoist type checks out of loops.

        Similarly, any local that is incremented or decremented, or is the input or
        output or a bitwise operator, is likely to be an integer. By typing the
        local as int32 we can avoid speculation checks on access, and tagging when
        writing to the slot. All accesses can become 32bit instead of 64.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::set):
        (JSC::DFG::ByteCodeParser::predictArray):
        (JSC::DFG::ByteCodeParser::predictInt32):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.h:
        (JSC::DFG::PredictionSlot::PredictionSlot):
        (JSC::DFG::Graph::Graph):
        (JSC::DFG::Graph::predict):
        (JSC::DFG::Graph::getPrediction):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::tagFor):
        (JSC::DFG::JITCompiler::payloadFor):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        (JSC::DFG::SpeculativeJIT::checkArgumentTypes):
        (JSC::DFG::SpeculativeJIT::initializeVariableTypes):
        * dfg/DFGSpeculativeJIT.h:
        * runtime/Executable.cpp:
        (JSC::tryDFGCompile):

2011-04-25  David Levin  <levin@chromium.org>

        Reviewed by James Robinson.

        Fix OwnPtr strict mode violation in MessageQueue.h
        https://bugs.webkit.org/show_bug.cgi?id=59400

        * wtf/MessageQueue.h:
        (WTF::::waitForMessage):
        (WTF::::waitForMessageFilteredWithTimeout):
        (WTF::::tryGetMessage):

2011-04-25  Adam Barth  <abarth@webkit.org>

        Reviewed by Darin Adler.

        JavaScriptCore should play nice strict OwnPtrs
        https://bugs.webkit.org/show_bug.cgi?id=59401

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parse):
        * heap/Heap.cpp:
        (JSC::TypeCounter::TypeCounter):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::JITThunks):
        * parser/JSParser.cpp:
        (JSC::JSParser::Scope::Scope):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::GenerationState::addParenthesesTail):

2011-04-25  Mark Rowe  <mrowe@apple.com>

        Build fix.

        * wtf/ListHashSet.h:

2011-04-25  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 59370 - DFG JIT - fix leak of BlocksBlocks
        (put the blocks immediately into an OwnPtr).

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parse):

2011-04-25  James Robinson  <jamesr@chromium.org>

        Reviewed by David Levin.

        Fix strict OwnPtr violations in ListHashSet and RenderLayerCompositor
        https://bugs.webkit.org/show_bug.cgi?id=59353

        * wtf/ListHashSet.h:
        (WTF::::ListHashSet):

2011-04-25  David Levin  <levin@chromium.org>

        Reviewed by Adam Barth.

        Fix PassOwnPtr issues in Structure and JSGlobalData.cpp
        https://bugs.webkit.org/show_bug.cgi?id=59347

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/Structure.cpp:
        (JSC::Structure::copyPropertyTable):
        (JSC::Structure::createPropertyMap):
        * runtime/Structure.h:

2011-04-25  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make ClassInfo required when creating a Structure
        https://bugs.webkit.org/show_bug.cgi?id=59340

        Add ClassInfo to all those types which currently don't
        have it, and add an assertion to Structure::create to
        ensure that the provided classInfo is not null.

        * runtime/Executable.h:
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/GetterSetter.cpp:
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/JSAPIValueWrapper.cpp:
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        * runtime/JSString.cpp:
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::JSCell::createDummyStructure):

2011-04-25  David Levin  <levin@chromium.org>

        Reviewed by Adam Barth.

        PropertyMapHashTable.h should use adoptPtr instead of implicit conversions to PassRefPtr.
        https://bugs.webkit.org/show_bug.cgi?id=59342

        This patch is to prepare for the strict OwnPtr hack-a-thon.

        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyTable::copy):

2011-04-25  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        Reviewed by Gavin Barraclough.

        Rationalize MacroAssembler branch methods
        https://bugs.webkit.org/show_bug.cgi?id=58950

        split out the 'Condition' enum into 'RelationalCondition' and 'ResultCondition' 
        and apply related changes (only for SH4 platforms).

        * assembler/MacroAssemblerSH4.cpp:
        * assembler/MacroAssemblerSH4.h:
        (JSC::MacroAssemblerSH4::compare32):
        (JSC::MacroAssemblerSH4::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerSH4::branchDouble):
        (JSC::MacroAssemblerSH4::branch32):
        (JSC::MacroAssemblerSH4::branchTest8):
        (JSC::MacroAssemblerSH4::branch8):
        (JSC::MacroAssemblerSH4::branchTruncateDoubleToInt32):
        (JSC::MacroAssemblerSH4::test8):
        (JSC::MacroAssemblerSH4::branch16):
        (JSC::MacroAssemblerSH4::branchTest32):
        (JSC::MacroAssemblerSH4::branchAdd32):
        (JSC::MacroAssemblerSH4::branchMul32):
        (JSC::MacroAssemblerSH4::branchSub32):
        (JSC::MacroAssemblerSH4::branchOr32):
        (JSC::MacroAssemblerSH4::branchConvertDoubleToInt32):
        (JSC::MacroAssemblerSH4::branchPtrWithPatch):
        (JSC::MacroAssemblerSH4::SH4Condition):
        * assembler/SH4Assembler.h:
        (JSC::SH4Assembler::cmpEqImmR0):

2011-04-25  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        PropertyMapHashTable should work with strict OwnPtr
        https://bugs.webkit.org/show_bug.cgi?id=59337

        This patch is in preparation for the strict OwnPtr hack-a-thon.

        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyTable::PropertyTable):
        (JSC::PropertyTable::addDeletedOffset):

2011-04-25  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Nixed MarkStack::deprecatedAppend, since it has no clients left.

        * heap/MarkStack.h:

2011-04-23  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 59287 - DFG JIT - Handle temporaries as vars, allowing support for ?:

        SetLocals to temporaries will only be generated if they are used within other
        blocks, due to the SSA based DCE.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::get):
        (JSC::DFG::ByteCodeParser::set):
        (JSC::DFG::ByteCodeParser::getLocal):
        (JSC::DFG::ByteCodeParser::setLocal):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::processPhiStack):
        (JSC::DFG::ByteCodeParser::allocateVirtualRegisters):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.h:
        (JSC::DFG::BasicBlock::BasicBlock):

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig & Geoff Garen.

        Bug 59266 - DFG JIT - Add SSA style DCE

        This works by making GetLocal nodes reference SetLocal nodes from prior blocks,
        via intermediate Phi nodes. Whenever we add a GetLocal to the graph, also add a
        matching child Phi, and add the Phi to a work queue to add references to prior
        definitions once we have the full CFG & can determine predecessors. This process
        is iterative, inserting new phis into predecessors as necessary.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::getVariable):
        (JSC::DFG::ByteCodeParser::setVariable):
        (JSC::DFG::ByteCodeParser::getArgument):
        (JSC::DFG::ByteCodeParser::setArgument):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::processWorkQueue):
        (JSC::DFG::ByteCodeParser::allocateVirtualRegisters):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        (JSC::DFG::Graph::refChildren):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::ref):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::ref):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGScoreBoard.h:
        (JSC::DFG::ScoreBoard::~ScoreBoard):
        (JSC::DFG::ScoreBoard::dump):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-04-22  Vitaly Repeshko  <vitalyr@chromium.org>

        Reviewed by Adam Barth.

        Add missing default constructors for HashMap iterator specializations.
        https://bugs.webkit.org/show_bug.cgi?id=59250

        * wtf/HashIterators.h:
        * wtf/HashTable.h:
        (WTF::HashTableConstIterator::HashTableConstIterator): Added cast
        to help compiler find the function template.

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 59262 - DFG JIT - reduce size of VariableRecord

        We never need both the get & set node, only the most recent
        (which is always a set, if both exist).

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::getVariable):
        (JSC::DFG::ByteCodeParser::setVariable):
        (JSC::DFG::ByteCodeParser::getArgument):
        (JSC::DFG::ByteCodeParser::setArgument):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.h:
        (JSC::DFG::VariableRecord::VariableRecord):

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoffrey Garen.

        Bug 59254 - DFG JIT - retain VariableRecords for args/var in all basic blocks,
        such that this information is available for DCE.  Also, since this enlarges the
        size of BasicBlock, make Graph hold a vector of pointers to basic blocks, not a
        vector of blocks.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::get):
        (JSC::DFG::ByteCodeParser::set):
        (JSC::DFG::ByteCodeParser::getVariable):
        (JSC::DFG::ByteCodeParser::setVariable):
        (JSC::DFG::ByteCodeParser::getArgument):
        (JSC::DFG::ByteCodeParser::setArgument):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::setupPredecessors):
        (JSC::DFG::ByteCodeParser::allocateVirtualRegisters):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::VariableRecord::VariableRecord):
        (JSC::DFG::BasicBlock::BasicBlock):
        (JSC::DFG::BasicBlock::getBytecodeBegin):
        (JSC::DFG::Graph::blockIndexForBytecodeOffset):
        (JSC::DFG::Graph::blockForBytecodeOffset):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::detectPeepHoleBranch):

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Errk, build fix.

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Quick cleanup to SpeculativeJIT/NonSpeculativeJIT compile loop,
        move out the call to checkConsistency().

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::SpeculativeJIT):
        (JSC::DFG::SpeculativeJIT::terminateSpeculativeExecution):

2011-04-21  Vitaly Repeshko  <vitalyr@chromium.org>

        Reviewed by Adam Barth.

        Provide default constructors for HashMap iterators.
        https://bugs.webkit.org/show_bug.cgi?id=59151

        These will be used to implement an iterator over EventTarget's
        listeners.

        * wtf/HashTable.h:
        (WTF::HashTableConstIteratorAdapter::HashTableConstIteratorAdapter):
        (WTF::HashTableIteratorAdapter::HashTableIteratorAdapter):

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        Bug 59232 - DFG JIT - Add predecessor links to BasicBlocks

        These will be necessary for DCE support.
        Also factor allocateVirtualRegisters out into its own method.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::setupPredecessors):
        (JSC::DFG::ByteCodeParser::allocateVirtualRegisters):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::blockForBytecodeOffset):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::isTerminal):

2011-04-22  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Object.create creates uncachable objects
        https://bugs.webkit.org/show_bug.cgi?id=59164

        Use the prototype object's inheritorID, as we
        should always have done

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        (JSC::JSGlobalObject::visitChildren):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::nullPrototypeObjectStructure):
        * runtime/ObjectConstructor.cpp:
        (JSC::objectConstructorCreate):

2011-04-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 59222 - DFG JIT - don't allocate virtual registers to nodes with no result

        We currently allocate virtual registers to nodes which have no result - these are
        clearly unused, and may result in us allocating a larger than necessary stack frame.

        Encapsulate Node::virtualRegister such that we can ASSERT this is only called on
        nodes that have results, and improve the quality of output from the consistency check.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::ref):
        (JSC::DFG::Graph::deref):
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillInteger):
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        (JSC::DFG::JITCodeGenerator::dump):
        (JSC::DFG::JITCodeGenerator::checkConsistency):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::canReuse):
        (JSC::DFG::JITCodeGenerator::isFilled):
        (JSC::DFG::JITCodeGenerator::isFilledDouble):
        (JSC::DFG::JITCodeGenerator::use):
        (JSC::DFG::JITCodeGenerator::integerResult):
        (JSC::DFG::JITCodeGenerator::noResult):
        (JSC::DFG::JITCodeGenerator::cellResult):
        (JSC::DFG::JITCodeGenerator::jsValueResult):
        (JSC::DFG::JITCodeGenerator::doubleResult):
        (JSC::DFG::JITCodeGenerator::initConstantInfo):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::fillInt32ToInteger):
        (JSC::DFG::JITCompiler::fillToJS):
        (JSC::DFG::JITCompiler::jumpFromSpeculativeToNonSpeculative):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::Node):
        (JSC::DFG::Node::hasResult):
        (JSC::DFG::Node::virtualRegister):
        (JSC::DFG::Node::setVirtualRegister):
        (JSC::DFG::Node::refCount):
        (JSC::DFG::Node::ref):
        (JSC::DFG::Node::deref):
        (JSC::DFG::Node::adjustedRefCount):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::isKnownInteger):
        (JSC::DFG::NonSpeculativeJIT::isKnownNumeric):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGScoreBoard.h:
        (JSC::DFG::ScoreBoard::use):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::compile):

2011-04-22  Sam Weinig  <sam@webkit.org>

        Reviewed by Gavin Barraclough and Oliver Hunt.

        Arrays should participate in global object forwarding fun
        https://bugs.webkit.org/show_bug.cgi?id=59215

        * runtime/JSGlobalObject.h:
        (JSC::constructEmptyArray):
        (JSC::constructArray):
        Add variants of constructArray that take a global object.

2011-04-22  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r84650 and r84654.
        http://trac.webkit.org/changeset/84650
        http://trac.webkit.org/changeset/84654
        https://bugs.webkit.org/show_bug.cgi?id=59218

        Broke Windows build (Requested by bweinstein on #webkit).

        * API/JSCallbackObjectFunctions.h:
        (JSC::::init):
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * heap/Handle.h:
        (JSC::HandleBase::operator!):
        (JSC::HandleBase::operator UnspecifiedBoolType*):
        (JSC::HandleTypes::getFromSlot):
        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::markStrongHandles):
        (JSC::HandleHeap::markWeakHandles):
        (JSC::HandleHeap::finalizeWeakHandles):
        (JSC::HandleHeap::writeBarrier):
        (JSC::HandleHeap::protectedGlobalObjectCount):
        (JSC::HandleHeap::isValidWeakNode):
        * heap/HandleHeap.h:
        (JSC::HandleHeap::copyWeak):
        (JSC::HandleHeap::makeWeak):
        (JSC::HandleHeap::Node::slot):
        * heap/HandleStack.cpp:
        (JSC::HandleStack::mark):
        (JSC::HandleStack::grow):
        * heap/HandleStack.h:
        (JSC::HandleStack::zapTo):
        (JSC::HandleStack::push):
        * heap/Heap.cpp:
        (JSC::HandleHeap::protectedObjectTypeCounts):
        * heap/Local.h:
        (JSC::::set):
        * heap/Strong.h:
        (JSC::Strong::set):
        * heap/Weak.h:
        (JSC::Weak::set):
        * runtime/StructureTransitionTable.h:
        (JSC::StructureTransitionTable::singleTransition):
        (JSC::StructureTransitionTable::setSingleTransition):
        * runtime/WeakGCMap.h:
        (JSC::WeakGCMap::add):
        (JSC::WeakGCMap::set):
        * runtime/WriteBarrier.h:

2011-04-22  Brian Weinstein  <bweinstein@apple.com>

        Part of Windows build fix from r84650.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-04-22  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make it harder to use HandleSlot incorrectly
        https://bugs.webkit.org/show_bug.cgi?id=59205

        Just add a little type fudging to make it harder to
        incorrectly assign through a HandleSlot.

        * API/JSCallbackObjectFunctions.h:
        (JSC::::init):
        * JavaScriptCore.exp:
        * heap/Handle.h:
        (JSC::HandleBase::operator!):
        (JSC::HandleBase::operator UnspecifiedBoolType*):
        (JSC::HandleTypes::getFromSlot):
        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::markStrongHandles):
        (JSC::HandleHeap::markWeakHandles):
        (JSC::HandleHeap::finalizeWeakHandles):
        (JSC::HandleHeap::writeBarrier):
        (JSC::HandleHeap::protectedGlobalObjectCount):
        (JSC::HandleHeap::isValidWeakNode):
        * heap/HandleHeap.h:
        (JSC::HandleHeap::copyWeak):
        (JSC::HandleHeap::makeWeak):
        (JSC::HandleHeap::Node::slot):
        * heap/HandleStack.cpp:
        (JSC::HandleStack::mark):
        (JSC::HandleStack::grow):
        * heap/HandleStack.h:
        (JSC::HandleStack::zapTo):
        (JSC::HandleStack::push):
        * heap/Heap.cpp:
        (JSC::HandleHeap::protectedObjectTypeCounts):
        * heap/Local.h:
        (JSC::::set):
        * heap/Strong.h:
        (JSC::Strong::set):
        * heap/Weak.h:
        (JSC::Weak::set):
        * runtime/StructureTransitionTable.h:
        (JSC::StructureTransitionTable::singleTransition):
        (JSC::StructureTransitionTable::setSingleTransition):
        * runtime/WeakGCMap.h:
        (JSC::WeakGCMap::add):
        (JSC::WeakGCMap::set):
        * runtime/WriteBarrier.h:
        (JSC::OpaqueJSValue::toJSValue):
        (JSC::OpaqueJSValue::toJSValueRef):
        (JSC::OpaqueJSValue::fromJSValue):

2011-04-22  Patrick Gansterer  <paroga@webkit.org>

        Unreviewed. Build fix for ENABLE(INTERPRETER) after r84556.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitAggregate):

2011-04-21  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r84583.
        http://trac.webkit.org/changeset/84583
        https://bugs.webkit.org/show_bug.cgi?id=59173

        "broke
        http://trac.webkit.org/export/84593/trunk/LayoutTests/fast/js
        /Object-create.html" (Requested by ggaren on #webkit).

        * runtime/ObjectConstructor.cpp:
        (JSC::objectConstructorCreate):

2011-04-21  Maciej Stachowiak  <mjs@apple.com>

        Reviewed by Adam Roben.

        Add a feature define to allow <details> and <summary> to be disabled
        https://bugs.webkit.org/show_bug.cgi?id=59118
        <rdar://problem/9257045>

        * Configurations/FeatureDefines.xcconfig:

2011-04-21  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Object.create creates uncachable objects
        https://bugs.webkit.org/show_bug.cgi?id=59164

        Use the prototype object's inheritorID, as we
        should always have done

        * runtime/ObjectConstructor.cpp:
        (JSC::objectConstructorCreate):

2011-04-21  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Start moving to a general visitor pattern for GC traversal
        https://bugs.webkit.org/show_bug.cgi?id=59141

        This is just a rename:
            markChildren -> visitChildren
            markAggregate -> visitAggregate
            markStack -> visitor
            MarkStack -> typedef'd to SlotVisitor

        * API/JSCallbackObject.h:
        (JSC::JSCallbackObjectData::visitChildren):
        (JSC::JSCallbackObjectData::JSPrivatePropertyMap::visitChildren):
        (JSC::JSCallbackObject::visitChildren):
        * JavaScriptCore.exp:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::visitStructures):
        (JSC::EvalCodeCache::visitAggregate):
        (JSC::CodeBlock::visitAggregate):
        * bytecode/CodeBlock.h:
        * bytecode/EvalCodeCache.h:
        * bytecode/Instruction.h:
        (JSC::PolymorphicAccessStructureList::visitAggregate):
        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::visitAggregate):
        * bytecode/StructureStubInfo.h:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::visitChildren):
        * debugger/DebuggerActivation.h:
        * heap/HandleHeap.cpp:
        (JSC::WeakHandleOwner::isReachableFromOpaqueRoots):
        (JSC::HandleHeap::markStrongHandles):
        (JSC::HandleHeap::markWeakHandles):
        * heap/HandleHeap.h:
        * heap/HandleStack.cpp:
        (JSC::HandleStack::mark):
        * heap/HandleStack.h:
        * heap/Heap.cpp:
        (JSC::Heap::markProtectedObjects):
        (JSC::Heap::markTempSortVectors):
        (JSC::Heap::markRoots):
        * heap/Heap.h:
        * heap/MarkStack.cpp:
        (JSC::MarkStack::visitChildren):
        (JSC::MarkStack::drain):
        * heap/MarkStack.h:
        (JSC::HeapRootVisitor::HeapRootVisitor):
        (JSC::HeapRootVisitor::mark):
        (JSC::HeapRootVisitor::visitor):
        * heap/MarkedSpace.h:
        * runtime/ArgList.cpp:
        (JSC::MarkedArgumentBuffer::markLists):
        * runtime/ArgList.h:
        * runtime/Arguments.cpp:
        (JSC::Arguments::visitChildren):
        * runtime/Arguments.h:
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::visitChildren):
        (JSC::ProgramExecutable::visitChildren):
        (JSC::FunctionExecutable::visitChildren):
        * runtime/Executable.h:
        * runtime/GetterSetter.cpp:
        (JSC::GetterSetter::visitChildren):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::visitChildren):
        * runtime/JSActivation.h:
        * runtime/JSArray.cpp:
        (JSC::JSArray::visitChildren):
        * runtime/JSArray.h:
        (JSC::JSArray::visitDirect):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::visitChildren):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::visitChildren):
        * runtime/JSFunction.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::visitIfNeeded):
        (JSC::JSGlobalObject::visitChildren):
        * runtime/JSGlobalObject.h:
        * runtime/JSONObject.cpp:
        * runtime/JSObject.cpp:
        (JSC::JSObject::visitChildren):
        * runtime/JSObject.h:
        (JSC::JSObject::visitDirect):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::visitChildren):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::createStructure):
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::visitChildren):
        * runtime/JSStaticScopeObject.h:
        * runtime/JSTypeInfo.h:
        (JSC::TypeInfo::TypeInfo):
        (JSC::TypeInfo::overridesVisitChildren):
        * runtime/JSWrapperObject.cpp:
        (JSC::JSWrapperObject::visitChildren):
        * runtime/JSWrapperObject.h:
        * runtime/JSZombie.h:
        (JSC::JSZombie::visitChildren):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::visitChildren):
        * runtime/NativeErrorConstructor.h:
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::visitChildren):
        * runtime/RegExpObject.h:
        * runtime/ScopeChain.cpp:
        (JSC::ScopeChainNode::visitChildren):
        * runtime/ScopeChain.h:
        * runtime/SmallStrings.cpp:
        (JSC::SmallStrings::visitChildren):
        * runtime/SmallStrings.h:
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
        (JSC::Structure::visitChildren):
        * runtime/Structure.h:
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::visitChildren):
        * runtime/StructureChain.h:
        (JSC::StructureChain::createStructure):

2011-04-21  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r84548.
        http://trac.webkit.org/changeset/84548
        https://bugs.webkit.org/show_bug.cgi?id=59144

        Broke chromium-win build (Requested by aklein on #webkit).

        * wtf/Platform.h:

2011-04-21  Adam Klein  <adamk@chromium.org>

        Reviewed by David Levin.

        [fileapi] Worker File API calls that create Blobs fail in debug builds due to random number generator thread assertion
        https://bugs.webkit.org/show_bug.cgi?id=55728

        Enable WTF_MULTIPLE_THREADS for Chromium.

        * wtf/Platform.h:

2011-04-20  Michael Saboff  <msaboff@apple.com>

        Reviewed by Geoff Garen.

        JSString::resolveRope inefficient for common 2 fiber case
        https://bugs.webkit.org/show_bug.cgi?id=58994

        Split JSString::resolveRope into three routines.
        resolveRope allocates the new buffer and handles the 1 or 2
        fiber case with single level fibers.
        resolveRopeSlowCase handles the general case.
        outOfMemory handles the rare out of memory exception case.

        * runtime/JSString.cpp:
        (JSC::JSString::resolveRope):
        (JSC::JSString::resolveRopeSlowCase):
        (JSC::JSString::outOfMemory):
        * runtime/JSString.h:

2011-04-20  Adam Klein  <adamk@chromium.org>

        Reviewed by David Levin.

        Rename all uses of JSC_MULTIPLE_THREADS under wtf/... to WTF_MULTIPLE_THREADS
        https://bugs.webkit.org/show_bug.cgi?id=59040

        This will be used to fix https://bugs.webkit.org/show_bug.cgi?id=55728
        by enabling WTF_MULTIPLE_THREADS for Chromium.

        * wtf/CryptographicallyRandomNumber.cpp:
        (WTF::ARC4Stream::ARC4RandomNumberGenerator::randomNumber):
        (WTF::ARC4Stream::ARC4RandomNumberGenerator::randomValues):
        * wtf/FastMalloc.cpp:
        * wtf/Platform.h:
        Enable WTF_MULTIPLE_THREADS whenever JSC_MULTIPLE_THREADS is enabled.
        * wtf/RandomNumber.cpp:
        (WTF::randomNumber):
        * wtf/RefCountedLeakCounter.cpp:
        (WTF::RefCountedLeakCounter::increment):
        (WTF::RefCountedLeakCounter::decrement):
        * wtf/dtoa.cpp:
        (WTF::pow5mult):

2011-04-20  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by Geoff Garen

        Bug 59069 - DFG JIT - register allocate r8, r9, r10

        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::gprToRegisterID):

2011-04-20  Gavin Barraclough  <barraclough@apple.com>

        Build fix - revert accidental change.

        * wtf/Platform.h:

2011-04-20  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Add SAMPLING_FLAGS tool to DFG JIT.

        * bytecode/SamplingTool.h:
        (JSC::SamplingFlags::addressOfFlags):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::setSamplingFlag):
        (JSC::DFG::JITCompiler::clearSamplingFlag):
        * dfg/DFGJITCompiler.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::setSamplingFlag):
        (JSC::JIT::clearSamplingFlag):
        * wtf/Platform.h:

2011-04-20  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 59022 - DFG JIT - Optimize branch-on-relational-compare

        If a relational compare (< or <=) is immediately followed by a branch,
        we can combine the two, avoiding generation of a boolean into a register.

        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::branch32):
        (JSC::MacroAssemblerX86Common::invert):
        (JSC::MacroAssemblerX86Common::commute):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::adjustedRefCount):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compilePeepHoleBranch):
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isJSConstantWithInt32Value):
        (JSC::DFG::SpeculativeJIT::detectPeepHoleBranch):

2011-04-20  Gavin Barraclough  <barraclough@apple.com>

        ARMv7 build fix II.

        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::softModulo):

2011-04-20  Gavin Barraclough  <barraclough@apple.com>

        ARMv7 build fix.

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::test8):

2011-04-19  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Rationalize MacroAssembler branch methods
        https://bugs.webkit.org/show_bug.cgi?id=58950

        The MacroAssembler currently exposes x86's weird behaviour that the 'setcc'
        instruction only sets the low 8 bits of a register. Stop that.

        Having done so, to clarify remove the 'set32' prefix from test & compare
        instructions - these methods all now set a full 32/64 bit register (Ptr size).
        The size in the function name should indicate the amount of data being compared.

        Also split out the 'Condition' enum into 'RelationalCondition' and
        'ResultCondition'. The former is used in binary comparison, the latter is a unary
        condition check on the result of an operation.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * assembler/MacroAssembler.h:
        (JSC::MacroAssembler::branchPtr):
        (JSC::MacroAssembler::branch32):
        (JSC::MacroAssembler::branch16):
        (JSC::MacroAssembler::branchTestPtr):
        (JSC::MacroAssembler::comparePtr):
        (JSC::MacroAssembler::branchAddPtr):
        (JSC::MacroAssembler::branchSubPtr):
        (JSC::MacroAssembler::branchTest8):
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::branch8):
        (JSC::MacroAssemblerARM::branch32):
        (JSC::MacroAssemblerARM::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerARM::branch16):
        (JSC::MacroAssemblerARM::branchTest8):
        (JSC::MacroAssemblerARM::branchTest32):
        (JSC::MacroAssemblerARM::branchAdd32):
        (JSC::MacroAssemblerARM::branchMul32):
        (JSC::MacroAssemblerARM::branchSub32):
        (JSC::MacroAssemblerARM::branchNeg32):
        (JSC::MacroAssemblerARM::branchOr32):
        (JSC::MacroAssemblerARM::compare32):
        (JSC::MacroAssemblerARM::test32):
        (JSC::MacroAssemblerARM::test8):
        (JSC::MacroAssemblerARM::branchPtrWithPatch):
        (JSC::MacroAssemblerARM::ARMCondition):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::branch32):
        (JSC::MacroAssemblerARMv7::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerARMv7::branch16):
        (JSC::MacroAssemblerARMv7::branch8):
        (JSC::MacroAssemblerARMv7::branchTest32):
        (JSC::MacroAssemblerARMv7::branchTest8):
        (JSC::MacroAssemblerARMv7::branchAdd32):
        (JSC::MacroAssemblerARMv7::branchMul32):
        (JSC::MacroAssemblerARMv7::branchOr32):
        (JSC::MacroAssemblerARMv7::branchSub32):
        (JSC::MacroAssemblerARMv7::compare32):
        (JSC::MacroAssemblerARMv7::test32):
        (JSC::MacroAssemblerARMv7::test8):
        (JSC::MacroAssemblerARMv7::branchPtrWithPatch):
        (JSC::MacroAssemblerARMv7::makeBranch):
        (JSC::MacroAssemblerARMv7::armV7Condition):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::branch8):
        (JSC::MacroAssemblerMIPS::branch32):
        (JSC::MacroAssemblerMIPS::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerMIPS::branch16):
        (JSC::MacroAssemblerMIPS::branchTest32):
        (JSC::MacroAssemblerMIPS::branchTest8):
        (JSC::MacroAssemblerMIPS::branchAdd32):
        (JSC::MacroAssemblerMIPS::branchMul32):
        (JSC::MacroAssemblerMIPS::branchSub32):
        (JSC::MacroAssemblerMIPS::branchOr32):
        (JSC::MacroAssemblerMIPS::compare32):
        (JSC::MacroAssemblerMIPS::test8):
        (JSC::MacroAssemblerMIPS::test32):
        (JSC::MacroAssemblerMIPS::branchPtrWithPatch):
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::branch32):
        (JSC::MacroAssemblerX86::branchPtrWithPatch):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::branch8):
        (JSC::MacroAssemblerX86Common::branch32):
        (JSC::MacroAssemblerX86Common::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerX86Common::branch16):
        (JSC::MacroAssemblerX86Common::branchTest32):
        (JSC::MacroAssemblerX86Common::branchTest8):
        (JSC::MacroAssemblerX86Common::branchAdd32):
        (JSC::MacroAssemblerX86Common::branchMul32):
        (JSC::MacroAssemblerX86Common::branchSub32):
        (JSC::MacroAssemblerX86Common::branchNeg32):
        (JSC::MacroAssemblerX86Common::branchOr32):
        (JSC::MacroAssemblerX86Common::compare32):
        (JSC::MacroAssemblerX86Common::test8):
        (JSC::MacroAssemblerX86Common::test32):
        (JSC::MacroAssemblerX86Common::x86Condition):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::comparePtr):
        (JSC::MacroAssemblerX86_64::branchPtr):
        (JSC::MacroAssemblerX86_64::branchTestPtr):
        (JSC::MacroAssemblerX86_64::branchAddPtr):
        (JSC::MacroAssemblerX86_64::branchSubPtr):
        (JSC::MacroAssemblerX86_64::branchPtrWithPatch):
        (JSC::MacroAssemblerX86_64::branchTest8):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_eq):
        (JSC::JIT::emit_op_neq):
        (JSC::JIT::compileOpStrictEq):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_eq):
        (JSC::JIT::emit_op_neq):
        (JSC::JIT::compileOpStrictEq):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):

2011-04-20  Balazs Kelemen  <kbalazs@webkit.org>

        Reviewed by Csaba Osztrogonác.

        [Qt] Cleanup includepath adjustment for generated files
        https://bugs.webkit.org/show_bug.cgi?id=58869

        * JavaScriptCore.pri:  Add the directory of generated files to the include
        path with absolute path to make it valid in the final build step.

2011-04-19  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove unneeded deprecated methods from MarkStack
        https://bugs.webkit.org/show_bug.cgi?id=58853

        Remove deprecated methods

        * heap/MarkStack.h:

2011-04-19  Mark Rowe  <mrowe@apple.com>

        Things work best when the Xcode project refers to the file at a path that exists.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-04-19  Renata Hodovan  <reni@webkit.org>

        Reviewed by Eric Seidel.

        Move the alignment related macros in Vector.h to new Alignment.h.
        https://bugs.webkit.org/show_bug.cgi?id=56000

        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/Alignment.h: Added.
        * wtf/CMakeLists.txt:
        * wtf/Vector.h:

2011-04-19  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove DeprecatedPtr
        https://bugs.webkit.org/show_bug.cgi?id=58718

        Remove the class an all functions that still exist to support it.

        * heap/MarkStack.h:
        (JSC::MarkStack::append):
        * runtime/JSValue.h:
        * runtime/WriteBarrier.h:

2011-04-19  Jungshik Shin  <jshin@chromium.org>

        Reviewed by David Levin

        Add U+FEFF (Zero width no-break space) to CharacterNames.h.
        It's added to the list of characters to treat as zero-width
        in WebCore.

        https://bugs.webkit.org/show_bug.cgi?id=48860

        * wtf/unicode/CharacterNames.h:

2011-04-19  Csaba Osztrogonác  <ossy@webkit.org>

        [Qt] REGRESSION(84176): http/tests/xmlhttprequest/event-listener-gc.html fails
        https://bugs.webkit.org/show_bug.cgi?id=58871

        Unreviewed, rolling out r84176, r84178, r84186, r84212 and r84231.
        http://trac.webkit.org/changeset/84176 (original patch)
        http://trac.webkit.org/changeset/84178 (original patch - part 2)
        http://trac.webkit.org/changeset/84186 (build fix)
        http://trac.webkit.org/changeset/84212
        http://trac.webkit.org/changeset/84231 (skip failing test)

        original bugs:
         - https://bugs.webkit.org/show_bug.cgi?id=58718
         - https://bugs.webkit.org/show_bug.cgi?id=58853

        * heap/MarkStack.h:
        (JSC::MarkStack::deprecatedAppendValues):
        (JSC::MarkStack::append):
        (JSC::MarkStack::deprecatedAppend):
        * runtime/JSValue.h:
        * runtime/WriteBarrier.h:
        (JSC::DeprecatedPtr::DeprecatedPtr):
        (JSC::DeprecatedPtr::get):
        (JSC::DeprecatedPtr::operator*):
        (JSC::DeprecatedPtr::operator->):
        (JSC::DeprecatedPtr::slot):
        (JSC::DeprecatedPtr::operator UnspecifiedBoolType*):
        (JSC::DeprecatedPtr::operator!):
        (JSC::operator==):

2011-04-18  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove unneeded deprecated methods from MarkStack
        https://bugs.webkit.org/show_bug.cgi?id=58853

        Remove deprecated methods

        * heap/MarkStack.h:

2011-04-18  Oliver Hunt  <oliver@apple.com>

        Reviewed by Adam Roben.

        Off by one initialising repeat callframe
        https://bugs.webkit.org/show_bug.cgi?id=58838
        <rdar://problem/8756810>

        If the end of a callframe made for a repeat call landed on
        a page boundary the following page may not have been committed
        which means that the off by one could lead to a crash.  However
        it could only happen in this case and only on windows which is
        why it was so hard to repro.  Alas given the steps needed to
        reproduce are such that it's not really possible to make a
        testcase.

        This fix makes the code a little less squirrely by not trying
        to avoid the unnecessary initialisation of |this|.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::prepareForRepeatCall):

2011-04-18  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        Bug 58829 - DFG JIT - Optimize add/sub immediate, multiply.

        Add code generation for add/subtract instruction with immediate operands
        (where a child is a constant), and don't bail to non-speculative if an
        integer multiple results in a +0 result (only if it should be generating -0).

        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculativeJIT::isDoubleConstantWithInt32Value):

2011-04-18  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        Bug 58817 - DFG JIT - if speculative compilation fails, throw away code.

        If we detect a logical conflict, throw away generated code,
        and only compile through the NonSpeculativeJIT.

        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::rewindToLabel):
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::rewindToOffset):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::branchAdd32):
        (JSC::MacroAssemblerX86Common::branchSub32):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::rewindToLabel):
        (JSC::X86Assembler::X86InstructionFormatter::rewindToLabel):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::linkSpeculationChecks):
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
        (JSC::DFG::SpeculationCheckIndexIterator::SpeculationCheckIndexIterator):

2011-04-18  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove DeprecatedPtr
        https://bugs.webkit.org/show_bug.cgi?id=58718

        As simple as it sounds.

        * runtime/JSValue.h:
        * runtime/WriteBarrier.h:

2011-04-17  Cameron Zwarich  <zwarich@apple.com>

        Reviewed by Dan Bernstein.

        JSC no longer builds with Clang due to -Woverloaded-virtual warning
        https://bugs.webkit.org/show_bug.cgi?id=58760

        Rename Structure's specificValue overload of put to putSpecificValue to avoid
        Clang's warning for overloading a virtual function.

        * runtime/Structure.cpp:
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::addPropertyWithoutTransition):
        (JSC::Structure::putSpecificValue):
        * runtime/Structure.h:

2011-04-17  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Adam Barth.

        Remove WTF_PLATFORM_SGL
        https://bugs.webkit.org/show_bug.cgi?id=58743

        WTF_PLATFORM_SGL and PLATFORM(SGL) are not used in the code anywhere.

        * wtf/Platform.h:

2011-04-17  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Adam Barth.

        Rename PLATFORM(CA) to USE(CA)
        https://bugs.webkit.org/show_bug.cgi?id=58742

        * wtf/Platform.h:

2011-04-17  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Adam Barth.

        Rename PLATFORM(CG) to USE(CG)
        https://bugs.webkit.org/show_bug.cgi?id=58729

        * wtf/Platform.h:

2011-04-16  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Eric Seidel.

        Rename PLATFORM(CAIRO) to USE(CAIRO)
        https://bugs.webkit.org/show_bug.cgi?id=55192

        * wtf/Platform.h:
        * wtf/gobject/GTypedefs.h:

2011-04-15  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r84067.
        http://trac.webkit.org/changeset/84067
        https://bugs.webkit.org/show_bug.cgi?id=58724

        qt build are failing. (Requested by loislo2 on #webkit).

        * heap/MarkStack.h:
        (JSC::MarkStack::append):
        * runtime/JSValue.h:
        * runtime/WriteBarrier.h:
        (JSC::DeprecatedPtr::DeprecatedPtr):
        (JSC::DeprecatedPtr::get):
        (JSC::DeprecatedPtr::operator*):
        (JSC::DeprecatedPtr::operator->):
        (JSC::DeprecatedPtr::slot):
        (JSC::DeprecatedPtr::operator UnspecifiedBoolType*):
        (JSC::DeprecatedPtr::operator!):
        (JSC::operator==):

2011-04-15  Shishir Agrawal  <shishir@chromium.org>

        Reviewed by James Robinson.

        Add a flag to guard Page Visibility API changes.
        https://bugs.webkit.org/show_bug.cgi?id=58464

        * Configurations/FeatureDefines.xcconfig:

2011-04-15  Gavin Barraclough  <barraclough@apple.com>

        Errrk! - build fix from !x86-64.

        * dfg/DFGNode.h:

2011-04-15  David Levin  <levin@chromium.org>

        Revert of r83974.

        JavaScriptCore shouldn't depend on ../ThirdParty/gtest/xcode/gtest.xcodeproj
        https://bugs.webkit.org/show_bug.cgi?id=58716

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/tests/RunAllWtfTests.cpp: Removed.
        * wtf/tests/StringTests.cpp: Removed.

2011-04-15  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove DeprecatedPtr
        https://bugs.webkit.org/show_bug.cgi?id=58718

        As simple as it sounds.

        * heap/MarkStack.h:
        (JSC::MarkStack::append):
        * runtime/JSValue.h:
        * runtime/WriteBarrier.h:

2011-04-15  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Add a simple tool to gather statistics on whether functions
        are completed through the new or old JIT.

        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):

2011-04-15  Oliver Hunt  <oliver@apple.com>

        GC allocate Structure
        https://bugs.webkit.org/show_bug.cgi?id=58483

        Rolling r83894 r83827 r83810 r83809 r83808 back in with
        a workaround for the gcc bug seen by the gtk bots

        * API/JSCallbackConstructor.cpp:
        (JSC::JSCallbackConstructor::JSCallbackConstructor):
        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::createStructure):
        * API/JSCallbackFunction.h:
        (JSC::JSCallbackFunction::createStructure):
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::createStructure):
        * API/JSCallbackObjectFunctions.h:
        (JSC::::JSCallbackObject):
        * API/JSContextRef.cpp:
        * JavaScriptCore.JSVALUE32_64only.exp:
        * JavaScriptCore.JSVALUE64only.exp:
        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::~CodeBlock):
        (JSC::CodeBlock::markStructures):
        (JSC::CodeBlock::markAggregate):
        * bytecode/CodeBlock.h:
        (JSC::MethodCallLinkInfo::setSeen):
        (JSC::GlobalResolveInfo::GlobalResolveInfo):
        * bytecode/Instruction.h:
        (JSC::PolymorphicAccessStructureList::PolymorphicStubInfo::set):
        (JSC::PolymorphicAccessStructureList::PolymorphicAccessStructureList):
        (JSC::PolymorphicAccessStructureList::markAggregate):
        (JSC::Instruction::Instruction):
        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::deref):
        (JSC::StructureStubInfo::markAggregate):
        * bytecode/StructureStubInfo.h:
        (JSC::StructureStubInfo::initGetByIdSelf):
        (JSC::StructureStubInfo::initGetByIdProto):
        (JSC::StructureStubInfo::initGetByIdChain):
        (JSC::StructureStubInfo::initPutByIdTransition):
        (JSC::StructureStubInfo::initPutByIdReplace):
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::DebuggerActivation):
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::createStructure):
        * heap/Handle.h:
        * heap/MarkStack.cpp:
        (JSC::MarkStack::markChildren):
        (JSC::MarkStack::drain):
        * heap/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        (JSC::MarkedBlock::sweep):
        * heap/Strong.h:
        (JSC::Strong::Strong):
        (JSC::Strong::set):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::resolveGlobal):
        (JSC::Interpreter::resolveGlobalDynamic):
        (JSC::Interpreter::tryCachePutByID):
        (JSC::Interpreter::uncachePutByID):
        (JSC::Interpreter::tryCacheGetByID):
        (JSC::Interpreter::uncacheGetByID):
        (JSC::Interpreter::privateExecute):
        * jit/JIT.h:
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::patchMethodCallProto):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::patchMethodCallProto):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::tryCachePutByID):
        (JSC::JITThunks::tryCacheGetByID):
        (JSC::DEFINE_STUB_FUNCTION):
        (JSC::getPolymorphicAccessStructureListSlot):
        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::storePtrWithWriteBarrier):
        * jsc.cpp:
        (cleanupGlobalData):
        * runtime/Arguments.h:
        (JSC::Arguments::createStructure):
        (JSC::Arguments::Arguments):
        (JSC::JSActivation::copyRegisters):
        * runtime/ArrayConstructor.cpp:
        (JSC::ArrayConstructor::ArrayConstructor):
        (JSC::constructArrayWithSizeQuirk):
        * runtime/ArrayConstructor.h:
        * runtime/ArrayPrototype.cpp:
        (JSC::ArrayPrototype::ArrayPrototype):
        (JSC::arrayProtoFuncSplice):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::createStructure):
        * runtime/BatchedTransitionOptimizer.h:
        (JSC::BatchedTransitionOptimizer::BatchedTransitionOptimizer):
        * runtime/BooleanConstructor.cpp:
        (JSC::BooleanConstructor::BooleanConstructor):
        * runtime/BooleanConstructor.h:
        * runtime/BooleanObject.cpp:
        (JSC::BooleanObject::BooleanObject):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::createStructure):
        * runtime/BooleanPrototype.cpp:
        (JSC::BooleanPrototype::BooleanPrototype):
        * runtime/BooleanPrototype.h:
        * runtime/DateConstructor.cpp:
        (JSC::DateConstructor::DateConstructor):
        * runtime/DateConstructor.h:
        * runtime/DateInstance.cpp:
        (JSC::DateInstance::DateInstance):
        * runtime/DateInstance.h:
        (JSC::DateInstance::createStructure):
        * runtime/DatePrototype.cpp:
        (JSC::DatePrototype::DatePrototype):
        * runtime/DatePrototype.h:
        (JSC::DatePrototype::createStructure):
        * runtime/Error.cpp:
        (JSC::StrictModeTypeErrorFunction::StrictModeTypeErrorFunction):
        * runtime/ErrorConstructor.cpp:
        (JSC::ErrorConstructor::ErrorConstructor):
        * runtime/ErrorConstructor.h:
        * runtime/ErrorInstance.cpp:
        (JSC::ErrorInstance::ErrorInstance):
        (JSC::ErrorInstance::create):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::createStructure):
        * runtime/ErrorPrototype.cpp:
        (JSC::ErrorPrototype::ErrorPrototype):
        * runtime/ErrorPrototype.h:
        * runtime/ExceptionHelpers.cpp:
        (JSC::InterruptedExecutionError::InterruptedExecutionError):
        (JSC::TerminatedExecutionError::TerminatedExecutionError):
        * runtime/Executable.cpp:
        * runtime/Executable.h:
        (JSC::ExecutableBase::ExecutableBase):
        (JSC::ExecutableBase::createStructure):
        (JSC::NativeExecutable::createStructure):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::ScriptExecutable::ScriptExecutable):
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/FunctionConstructor.cpp:
        (JSC::FunctionConstructor::FunctionConstructor):
        * runtime/FunctionConstructor.h:
        * runtime/FunctionPrototype.cpp:
        (JSC::FunctionPrototype::FunctionPrototype):
        * runtime/FunctionPrototype.h:
        (JSC::FunctionPrototype::createStructure):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::GetterSetter):
        (JSC::GetterSetter::createStructure):
        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::InternalFunction):
        * runtime/InternalFunction.h:
        (JSC::InternalFunction::createStructure):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        (JSC::JSAPIValueWrapper::JSAPIValueWrapper):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation):
        * runtime/JSActivation.h:
        (JSC::JSActivation::createStructure):
        * runtime/JSArray.cpp:
        (JSC::JSArray::JSArray):
        * runtime/JSArray.h:
        (JSC::JSArray::createStructure):
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::JSByteArray):
        (JSC::JSByteArray::createStructure):
        * runtime/JSByteArray.h:
        (JSC::JSByteArray::JSByteArray):
        * runtime/JSCell.cpp:
        (JSC::isZombie):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::JSCell):
        (JSC::JSCell::JSCell::addressOfStructure):
        (JSC::JSCell::JSCell::structure):
        (JSC::JSCell::JSCell::markChildren):
        (JSC::JSCell::JSValue::isZombie):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        * runtime/JSFunction.h:
        (JSC::JSFunction::createStructure):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs):
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::clearBuiltinStructures):
        (JSC::JSGlobalData::createLeaked):
        * runtime/JSGlobalData.h:
        (JSC::allocateGlobalHandle):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        (JSC::JSGlobalObject::markChildren):
        (JSC::JSGlobalObject::copyGlobalsFrom):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObject):
        (JSC::JSGlobalObject::createStructure):
        (JSC::Structure::prototypeChain):
        (JSC::Structure::isValid):
        (JSC::constructEmptyArray):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::JSNotAnObject):
        (JSC::JSNotAnObject::createStructure):
        * runtime/JSONObject.cpp:
        (JSC::JSONObject::JSONObject):
        * runtime/JSONObject.h:
        (JSC::JSONObject::createStructure):
        * runtime/JSObject.cpp:
        (JSC::JSObject::defineGetter):
        (JSC::JSObject::defineSetter):
        (JSC::JSObject::seal):
        (JSC::JSObject::freeze):
        (JSC::JSObject::preventExtensions):
        (JSC::JSObject::removeDirect):
        (JSC::JSObject::createInheritorID):
        * runtime/JSObject.h:
        (JSC::JSObject::createStructure):
        (JSC::JSObject::JSObject):
        (JSC::JSNonFinalObject::createStructure):
        (JSC::JSNonFinalObject::JSNonFinalObject):
        (JSC::JSFinalObject::create):
        (JSC::JSFinalObject::createStructure):
        (JSC::JSFinalObject::JSFinalObject):
        (JSC::constructEmptyObject):
        (JSC::createEmptyObjectStructure):
        (JSC::JSObject::~JSObject):
        (JSC::JSObject::setPrototype):
        (JSC::JSObject::setStructure):
        (JSC::JSObject::inheritorID):
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::transitionTo):
        (JSC::JSObject::markChildrenDirect):
        * runtime/JSObjectWithGlobalObject.cpp:
        (JSC::JSObjectWithGlobalObject::JSObjectWithGlobalObject):
        * runtime/JSObjectWithGlobalObject.h:
        (JSC::JSObjectWithGlobalObject::createStructure):
        (JSC::JSObjectWithGlobalObject::JSObjectWithGlobalObject):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::JSPropertyNameIterator):
        (JSC::JSPropertyNameIterator::create):
        (JSC::JSPropertyNameIterator::get):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::createStructure):
        (JSC::JSPropertyNameIterator::setCachedStructure):
        (JSC::Structure::setEnumerationCache):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        (JSC::JSStaticScopeObject::createStructure):
        * runtime/JSString.h:
        (JSC::RopeBuilder::JSString):
        (JSC::RopeBuilder::createStructure):
        * runtime/JSType.h:
        * runtime/JSTypeInfo.h:
        (JSC::TypeInfo::TypeInfo):
        * runtime/JSValue.h:
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::createStructure):
        (JSC::JSVariableObject::JSVariableObject):
        (JSC::JSVariableObject::copyRegisterArray):
        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::createStructure):
        (JSC::JSWrapperObject::JSWrapperObject):
        * runtime/JSZombie.cpp:
        * runtime/JSZombie.h:
        (JSC::JSZombie::JSZombie):
        (JSC::JSZombie::createStructure):
        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):
        * runtime/MathObject.h:
        (JSC::MathObject::createStructure):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        (JSC::NativeErrorConstructor::markChildren):
        (JSC::constructWithNativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::createStructure):
        * runtime/NativeErrorPrototype.cpp:
        (JSC::NativeErrorPrototype::NativeErrorPrototype):
        * runtime/NativeErrorPrototype.h:
        * runtime/NumberConstructor.cpp:
        (JSC::NumberConstructor::NumberConstructor):
        * runtime/NumberConstructor.h:
        (JSC::NumberConstructor::createStructure):
        * runtime/NumberObject.cpp:
        (JSC::NumberObject::NumberObject):
        * runtime/NumberObject.h:
        (JSC::NumberObject::createStructure):
        * runtime/NumberPrototype.cpp:
        (JSC::NumberPrototype::NumberPrototype):
        * runtime/NumberPrototype.h:
        * runtime/ObjectConstructor.cpp:
        (JSC::ObjectConstructor::ObjectConstructor):
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::createStructure):
        * runtime/ObjectPrototype.cpp:
        (JSC::ObjectPrototype::ObjectPrototype):
        * runtime/ObjectPrototype.h:
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyTable::PropertyTable):
        * runtime/RegExpConstructor.cpp:
        (JSC::RegExpConstructor::RegExpConstructor):
        (JSC::RegExpMatchesArray::RegExpMatchesArray):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::createStructure):
        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::RegExpObject):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::createStructure):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
        * runtime/RegExpPrototype.h:
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        (JSC::ScopeChainNode::createStructure):
        * runtime/StrictEvalActivation.cpp:
        (JSC::StrictEvalActivation::StrictEvalActivation):
        * runtime/StringConstructor.cpp:
        (JSC::StringConstructor::StringConstructor):
        * runtime/StringConstructor.h:
        * runtime/StringObject.cpp:
        (JSC::StringObject::StringObject):
        * runtime/StringObject.h:
        (JSC::StringObject::createStructure):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::StringObjectThatMasqueradesAsUndefined):
        (JSC::StringObjectThatMasqueradesAsUndefined::createStructure):
        * runtime/StringPrototype.cpp:
        (JSC::StringPrototype::StringPrototype):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::createStructure):
        * runtime/Structure.cpp:
        (JSC::StructureTransitionTable::remove):
        (JSC::StructureTransitionTable::add):
        (JSC::Structure::Structure):
        (JSC::Structure::~Structure):
        (JSC::Structure::materializePropertyMap):
        (JSC::Structure::addPropertyTransitionToExistingStructure):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::removePropertyTransition):
        (JSC::Structure::changePrototypeTransition):
        (JSC::Structure::despecifyFunctionTransition):
        (JSC::Structure::getterSetterTransition):
        (JSC::Structure::toDictionaryTransition):
        (JSC::Structure::toCacheableDictionaryTransition):
        (JSC::Structure::toUncacheableDictionaryTransition):
        (JSC::Structure::sealTransition):
        (JSC::Structure::freezeTransition):
        (JSC::Structure::preventExtensionsTransition):
        (JSC::Structure::flattenDictionaryStructure):
        (JSC::Structure::copyPropertyTable):
        (JSC::Structure::put):
        (JSC::Structure::markChildren):
        * runtime/Structure.h:
        (JSC::Structure::create):
        (JSC::Structure::setPrototypeWithoutTransition):
        (JSC::Structure::createStructure):
        (JSC::JSCell::createDummyStructure):
        (JSC::StructureTransitionTable::keyForWeakGCMapFinalizer):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::StructureChain):
        (JSC::StructureChain::markChildren):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):
        (JSC::StructureChain::head):
        (JSC::StructureChain::createStructure):
        * runtime/StructureTransitionTable.h:
        (JSC::StructureTransitionTable::WeakGCMapFinalizerCallback::finalizerContextFor):
        (JSC::StructureTransitionTable::WeakGCMapFinalizerCallback::keyForFinalizer):
        (JSC::StructureTransitionTable::~StructureTransitionTable):
        (JSC::StructureTransitionTable::slot):
        (JSC::StructureTransitionTable::setMap):
        (JSC::StructureTransitionTable::singleTransition):
        (JSC::StructureTransitionTable::clearSingleTransition):
        (JSC::StructureTransitionTable::setSingleTransition):
        * runtime/WeakGCMap.h:
        (JSC::DefaultWeakGCMapFinalizerCallback::finalizerContextFor):
        (JSC::DefaultWeakGCMapFinalizerCallback::keyForFinalizer):
        (JSC::WeakGCMap::contains):
        (JSC::WeakGCMap::find):
        (JSC::WeakGCMap::remove):
        (JSC::WeakGCMap::add):
        (JSC::WeakGCMap::set):
        (JSC::WeakGCMap::finalize):
        * runtime/WriteBarrier.h:
        (JSC::writeBarrier):
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):
        (JSC::WriteBarrierBase::setWithoutWriteBarrier):

2011-04-15  Fridrich Strba  <fridrich.strba@bluewin.ch>

        Reviewed by Gavin Barraclough.

        Correctly prefix symbols. Since gcc 4.5.0, Windows x64 symbols
        are not prefixed by underscore anymore. This is consistent with
        what MSVC does.
        https://bugs.webkit.org/show_bug.cgi?id=58573

        * jit/JITStubs.cpp:

2011-04-15  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        Bug 58705 - DFG JIT Add support for flow control (branch, jump).

        Add support for control flow by breaking the CodeBlock up into multiple
        basic blocks, generating code for each basic block in turn through the
        speculative JIT & then the non-speculative JIT.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::setTemporary):
        (JSC::DFG::ByteCodeParser::addToGraph):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        (JSC::DFG::BasicBlock::BasicBlock):
        (JSC::DFG::BasicBlock::getBytecodeOffset):
        (JSC::DFG::Graph::blockIndexForBytecodeOffset):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::JITCodeGenerator):
        (JSC::DFG::JITCodeGenerator::addBranch):
        (JSC::DFG::JITCodeGenerator::linkBranches):
        (JSC::DFG::JITCodeGenerator::BranchRecord::BranchRecord):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::Node):
        (JSC::DFG::Node::isJump):
        (JSC::DFG::Node::isBranch):
        (JSC::DFG::Node::takenBytecodeOffset):
        (JSC::DFG::Node::notTakenBytecodeOffset):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:

2011-04-15  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.

        Bug 58701 - DFG JIT - add GetLocal/SetLocal nodes

        Use these for both access to arguments & local variables, adds ability
        to set locals, such that values will persist between basic blocks.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::get):
        (JSC::DFG::ByteCodeParser::set):
        (JSC::DFG::ByteCodeParser::getVariable):
        (JSC::DFG::ByteCodeParser::setVariable):
        (JSC::DFG::ByteCodeParser::getArgument):
        (JSC::DFG::ByteCodeParser::setArgument):
        (JSC::DFG::ByteCodeParser::getThis):
        (JSC::DFG::ByteCodeParser::setThis):
        (JSC::DFG::ByteCodeParser::VariableRecord::VariableRecord):
        (JSC::DFG::ByteCodeParser::parseBlock):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        (JSC::DFG::Graph::derefChildren):
        * dfg/DFGGraph.h:
        (JSC::DFG::Graph::ref):
        (JSC::DFG::Graph::deref):
        * dfg/DFGNode.h:
        (JSC::DFG::Node::hasLocal):
        (JSC::DFG::Node::local):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-04-15  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 58696 - DFG JIT split handling of vars/temporaries

        Presently all callee registers are treated as having single block scope,
        since the DFG JIT can only compile single block functions. In order to
        expand the JIT to support control flow we will need to change to retaining
        locals (but not temporaries) across basic block boundaries.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::get):
        (JSC::DFG::ByteCodeParser::set):
        (JSC::DFG::ByteCodeParser::getVariable):
        (JSC::DFG::ByteCodeParser::setVariable):
        (JSC::DFG::ByteCodeParser::getTemporary):
        (JSC::DFG::ByteCodeParser::setTemporary):
        (JSC::DFG::ByteCodeParser::getArgument):
        (JSC::DFG::ByteCodeParser::getInt32Constant):
        (JSC::DFG::ByteCodeParser::getDoubleConstant):
        (JSC::DFG::ByteCodeParser::getJSConstant):
        (JSC::DFG::ByteCodeParser::constantUndefined):
        (JSC::DFG::ByteCodeParser::constantNull):
        (JSC::DFG::ByteCodeParser::one):
        (JSC::DFG::ByteCodeParser::parseBlock):
        (JSC::DFG::ByteCodeParser::parse):
        (JSC::DFG::parse):
        * dfg/DFGNode.h:
        * dfg/DFGScoreBoard.h:
        (JSC::DFG::ScoreBoard::ScoreBoard):
        (JSC::DFG::ScoreBoard::~ScoreBoard):
        (JSC::DFG::ScoreBoard::allocate):
        (JSC::DFG::ScoreBoard::use):

2011-04-15  Michael Saboff  <msaboff@apple.com>

        Reviewed by Oliver Hunt.

        globalObject moved to JSObjectWithGlobalObject.cpp inhibits inlining
        https://bugs.webkit.org/show_bug.cgi?id=58677

        Moved JSObjectWithGlobalObject::globalObject() to 
        runtime/JSObjectWithGlobalObject.h to allow the compiler to inline
        it for a performance benefit.  An equivalent instance had been in
        a header file before r60057.

        * JavaScriptCore.exp:
        * runtime/JSObjectWithGlobalObject.cpp:
        * runtime/JSObjectWithGlobalObject.h:
        (JSC::JSObjectWithGlobalObject::globalObject):

2011-04-14  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make JSNodeFilterCondition handle its lifetime correctly
        https://bugs.webkit.org/show_bug.cgi?id=58622

        Add export

        * JavaScriptCore.exp:

2011-04-14  Alexey Proskuryakov  <ap@apple.com>

        Reviewed by Dan Bernstein.

        WebKit2: Password field input does not switch to ASCII-compatible source
        https://bugs.webkit.org/show_bug.cgi?id=58583
        <rdar://problem/9059651>

        * wtf/Platform.h: Removed WTF_USE_CARBON_SECURE_INPUT_MODE. It's now only used by Chromium,
        and shouldn't be enabled on any other platforms, so there is no reason to make it
        configurable via Platform.h.

2011-04-15  Dmitry Lomov  <dslomov@google.com>

        Reviewed by David Levin.

        Add a sample test case for GTest framework
        https://bugs.webkit.org/show_bug.cgi?id=58509

        Add an example of GTest testcase, complete with a runner, to JavaScriptCore.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/tests/RunAllWtfTests.cpp: Added.
        (main):
        * wtf/tests/StringTests.cpp: Added.

2011-04-15  Anna Cavender  <annacc@chromium.org>

        Reviewed by Eric Carlson.

        Renaming TRACK feature define to VIDEO_TRACK
        https://bugs.webkit.org/show_bug.cgi?id=53556

        * Configurations/FeatureDefines.xcconfig:

2011-04-14  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by Geoffrey Garen.

        Hide DFG_JIT_RESTRICTIONS behind ARITHMETIC_OP() macro, and rename
        m_regressionGuard to m_parseFailed, such that it can be reused for
        other failure cases.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::parse):

2011-04-14  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoffrey Garen.

        Bug 58620 - DFG JIT - loading of arguments should not be lazy

        This optimization is overly simplistic. It only works because we never
        write out definitions to arguments (since we currently only compile
        single block functions). Revert this for now, we may want to reintroduce
        something like this again in the future, but it will need to be aware
        how to schedule definitions to arguments versus lazy loads that have not
        yet been performed.

        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::GenerationInfo::needsSpill):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillInteger):
        (JSC::DFG::JITCodeGenerator::fillDouble):
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::initConstantInfo):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::fillNumericToDouble):
        (JSC::DFG::JITCompiler::fillInt32ToInteger):
        (JSC::DFG::JITCompiler::fillToJS):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::isKnownInteger):
        (JSC::DFG::NonSpeculativeJIT::isKnownNumeric):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateIntInternal):
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::compile):

2011-04-14  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoffrey Garen.

        Bug 58600 - DFG JIT bugs in ValueToInt, PutByVal

        The bug in PutByVal is that an operand is in JSValueOperand - when this
        locks an integer into a register it will always retag the value without
        checking if the register is already locked. This is a problem where the
        value being stored by a PutByVal is the same as the subscript.
        The subscript is locked into a register first, as a strict integer.
        Locking the value results in the subscript being modified.

        The bug in ValueToInt related to the function of sillentFillAllRegisters.
        The problem is that this method will restore all register values from
        prior to the call, overwriting the result of the call out. Allow a
        register to be passed to specifically be excluded from being preserved.

        * assembler/ARMAssembler.h:
        (JSC::ARMAssembler::debugOffset):
        * assembler/ARMv7Assembler.h:
        (JSC::ARMv7Assembler::ARMInstructionFormatter::debugOffset):
        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::debugOffset):
        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::debugOffset):
        * assembler/LinkBuffer.h:
        (JSC::LinkBuffer::debugAddress):
        * assembler/MIPSAssembler.h:
        (JSC::MIPSAssembler::debugOffset):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::orPtr):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::debugOffset):
        (JSC::X86Assembler::X86InstructionFormatter::debugOffset):
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parse):
        * dfg/DFGGenerationInfo.h:
        * dfg/DFGJITCodeGenerator.cpp:
        (JSC::DFG::JITCodeGenerator::fillJSValue):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::isConstant):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::isConstant):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::valueToNumber):
        (JSC::DFG::NonSpeculativeJIT::valueToInt32):
        (JSC::DFG::NonSpeculativeJIT::numberToInt32):
        (JSC::DFG::NonSpeculativeJIT::isKnownInteger):
        (JSC::DFG::NonSpeculativeJIT::isKnownNumeric):
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
        (JSC::DFG::NonSpeculativeJIT::silentSpillGPR):
        (JSC::DFG::NonSpeculativeJIT::silentSpillFPR):
        (JSC::DFG::NonSpeculativeJIT::silentFillGPR):
        (JSC::DFG::NonSpeculativeJIT::silentFillFPR):
        (JSC::DFG::NonSpeculativeJIT::silentSpillAllRegisters):
        (JSC::DFG::NonSpeculativeJIT::silentFillAllRegisters):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):

2011-04-14  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Drain the mark stack while marking weak handles, not after.
        https://bugs.webkit.org/show_bug.cgi?id=58574

        Otherwise, items that would have caused more weak handle marking are
        processed after all weak handle marking has finished, and referenced
        weak handles get recycled.

        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::markWeakHandles): Removed looping from here, since we
        want Heap::markRoots to be responsible for draining the mark stack.

        * heap/Heap.cpp:
        (JSC::Heap::markRoots): Moved looping to here, as explained above.
        
        For efficiency's sake, drain the mark stack before starting to mark weak
        handles. Otherwise, items drained while marking weak handles may force
        an extra trip through the weak handle list.

        For correctness's sake, drain the mark stack each time through the weak
        handle list. Otherwise, opaque roots that would make weak handles reachable
        are not discovered until after weak handle marking is over.

2011-04-14  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make protected object list in caches window reflect reality
        https://bugs.webkit.org/show_bug.cgi?id=58565

        Make sure the heap includes objects protected by Strong handles
        in its list of protected objects.

        * heap/HandleHeap.h:
        * heap/Heap.cpp:
        (JSC::HandleHeap::protectedObjectTypeCounts):

2011-04-14  Satish Sampath  <satish@chromium.org>

        Reviewed by Anders Carlsson.

        Don't emit RegExp tables for chromium where they are not used
        https://bugs.webkit.org/show_bug.cgi?id=58544

        * JavaScriptCore.gyp/JavaScriptCore.gyp:
        * create_regex_tables: Added the "--notables" command line argument.

2011-04-13  Geoffrey Garen  <ggaren@apple.com>

        Try to fix ASSERTs seen on Windows bots.

        * wtf/HashTable.h:
        (WTF::hashTableSwap): Force MSVC to use the right version of swap.

2011-04-13  Ryuan Choi  <ryuan.choi@samsung.com>

        Reviewed by Kenneth Rohde Christiansen.

        [CMAKE] Separate DerivedSources.
        https://bugs.webkit.org/show_bug.cgi?id=58427

        * CMakeLists.txt: Change DERIVED_SOURCES_DIR to DERIVED_SOURCES_JAVASCRIPTCORE_DIR.

2011-04-13  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Switched DOM wrappers to use HashMap of Weak<T> instead of WeakGCMap<T>
        https://bugs.webkit.org/show_bug.cgi?id=58482
        
        This will allow wrappers to make individual decisions about their lifetimes.

        * heap/HandleHeap.h:
        (JSC::HandleHeap::copyWeak): New function for copying a weak handle.
        It's wasn't previously possible to perform this operation using HandleHeap
        API because the HandleHeap doesn't expose its underlying Node structure.

        * heap/Local.h:
        (JSC::::set):
        * heap/Strong.h:
        (JSC::Strong::set): Added ASSERTs to verify that dead objects are not
        resurrected by placement into handles.

        (JSC::swap): Added a swap helper, so use of Strong<T> inside a hash table
        is efficient.

        * heap/Weak.h:
        (JSC::Weak::Weak): Fixed a bug where copying a weak pointer would not
        copy its weak callback and context.

        (JSC::Weak::operator=): Added an assignment operator, since the default
        C++ assignment operator did the wrong thing.

        (JSC::Weak::set): Added ASSERTs to verify that dead objects are not
        resurrected by placement into handles.

        (JSC::swap): Added a swap helper, so use of Strong<T> inside a hash table
        is efficient, and can be done without copying, which is illegal during
        the handle finalization phase.

2011-04-13  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make PropertyMapEntry use a WriteBarrier for specificValue
        https://bugs.webkit.org/show_bug.cgi?id=58407

        Make PropertyMapEntry use a WriteBarrier for specificValue, and then
        propagate the required JSGlobalData through all the methods it ends
        up being needed.

        * API/JSClassRef.cpp:
        (OpaqueJSClass::prototype):
        * API/JSContextRef.cpp:
        * API/JSObjectRef.cpp:
        (JSObjectMake):
        (JSObjectSetPrototype):
        * JavaScriptCore.exp:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
        * interpreter/Interpreter.cpp:
        (JSC::appendSourceToError):
        (JSC::Interpreter::tryCacheGetByID):
        (JSC::Interpreter::privateExecute):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::tryCacheGetByID):
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/BatchedTransitionOptimizer.h:
        (JSC::BatchedTransitionOptimizer::BatchedTransitionOptimizer):
        * runtime/InternalFunction.cpp:
        (JSC::InternalFunction::name):
        (JSC::InternalFunction::displayName):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::getOwnPropertySlot):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::name):
        (JSC::JSFunction::displayName):
        (JSC::JSFunction::getOwnPropertySlot):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::putWithAttributes):
        (JSC::JSGlobalObject::reset):
        (JSC::JSGlobalObject::resetPrototype):
        * runtime/JSGlobalObject.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::put):
        (JSC::JSObject::deleteProperty):
        (JSC::JSObject::defineGetter):
        (JSC::JSObject::defineSetter):
        (JSC::JSObject::lookupGetter):
        (JSC::JSObject::lookupSetter):
        (JSC::JSObject::getPropertySpecificValue):
        (JSC::JSObject::getOwnPropertyNames):
        (JSC::JSObject::seal):
        (JSC::JSObject::freeze):
        (JSC::JSObject::preventExtensions):
        (JSC::JSObject::removeDirect):
        (JSC::JSObject::getOwnPropertyDescriptor):
        (JSC::JSObject::defineOwnProperty):
        * runtime/JSObject.h:
        (JSC::JSObject::getDirect):
        (JSC::JSObject::getDirectLocation):
        (JSC::JSObject::isSealed):
        (JSC::JSObject::isFrozen):
        (JSC::JSObject::setPrototypeWithCycleCheck):
        (JSC::JSObject::setPrototype):
        (JSC::JSObject::inlineGetOwnPropertySlot):
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::putDirectWithoutTransition):
        (JSC::JSObject::putDirectFunctionWithoutTransition):
        * runtime/Lookup.cpp:
        (JSC::setUpStaticFunctionSlot):
        * runtime/ObjectConstructor.cpp:
        (JSC::objectConstructorCreate):
        (JSC::objectConstructorSeal):
        (JSC::objectConstructorFreeze):
        (JSC::objectConstructorPreventExtensions):
        (JSC::objectConstructorIsSealed):
        (JSC::objectConstructorIsFrozen):
        * runtime/Operations.h:
        (JSC::normalizePrototypeChain):
        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyMapEntry::PropertyMapEntry):
        (JSC::PropertyTable::PropertyTable):
        (JSC::PropertyTable::copy):
        * runtime/Structure.cpp:
        (JSC::Structure::materializePropertyMap):
        (JSC::Structure::despecifyDictionaryFunction):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::removePropertyTransition):
        (JSC::Structure::changePrototypeTransition):
        (JSC::Structure::despecifyFunctionTransition):
        (JSC::Structure::getterSetterTransition):
        (JSC::Structure::toDictionaryTransition):
        (JSC::Structure::toCacheableDictionaryTransition):
        (JSC::Structure::toUncacheableDictionaryTransition):
        (JSC::Structure::sealTransition):
        (JSC::Structure::freezeTransition):
        (JSC::Structure::preventExtensionsTransition):
        (JSC::Structure::isSealed):
        (JSC::Structure::isFrozen):
        (JSC::Structure::addPropertyWithoutTransition):
        (JSC::Structure::removePropertyWithoutTransition):
        (JSC::Structure::copyPropertyTable):
        (JSC::Structure::get):
        (JSC::Structure::despecifyFunction):
        (JSC::Structure::despecifyAllFunctions):
        (JSC::Structure::put):
        (JSC::Structure::getPropertyNames):
        * runtime/Structure.h:
        (JSC::Structure::get):
        (JSC::Structure::materializePropertyMapIfNecessary):

2011-04-13  Paul Knight  <pknight@apple.com>

        Reviewed by Gavin Barraclough.

        BACKTRACE() macro should check for Debug configuration in macro, not WTFReportBacktrace definition
        https://bugs.webkit.org/show_bug.cgi?id=58405

        The BACKTRACE() macro requires JavaScriptCore be built with a Debug
        configuration in order for it to be enabled. Move the NDEBUG check to
        the header so it will be enabled when the calling framework or
        application is built with a Debug configuration, similar to how
        ASSERT() and friends work.

        * wtf/Assertions.cpp:
        * wtf/Assertions.h:

2011-04-12  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Alexey Proskuryakov.

        https://bugs.webkit.org/show_bug.cgi?id=58131

        Provide a workaround for an obscure Studio 12 compiler bug, which
        couldn't call src->~T() on a const T *src.

        * wtf/Vector.h:

2011-04-12  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=58395
        Exceptions thrown from property getters called from Array prototype functions can be missed

        This is caught by an ASSERT in the top of Interpreter::executeCall.
        Check for exceptions after accessing properties that could be getters.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncSort):
        (JSC::arrayProtoFuncFilter):
        (JSC::arrayProtoFuncMap):
        (JSC::arrayProtoFuncEvery):
        (JSC::arrayProtoFuncForEach):
        (JSC::arrayProtoFuncSome):
        (JSC::arrayProtoFuncReduce):
        (JSC::arrayProtoFuncReduceRight):
            - Add exception checks.

2011-04-12  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make API callback objects use weak handles to run their finalizers
        https://bugs.webkit.org/show_bug.cgi?id=58389

        Make the API object's private data struct act as a finalizer for
        an api object if the callback object has a API defined finalizer.

        * API/JSCallbackObject.cpp:
        (JSC::JSCallbackObjectData::finalize):
        * API/JSCallbackObject.h:
        * API/JSCallbackObjectFunctions.h:
        (JSC::::init):
        * heap/Handle.h:

2011-04-12  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Geoffrey Garen.

        Cleaned up hash traits, and added hash traits for handles
        https://bugs.webkit.org/show_bug.cgi?id=58381

        * heap/Handle.h:
        (JSC::HandleBase::swap):
        (JSC::Handle::Handle):
        (JSC::Handle::swap): Implemented swap, so we can rehash efficiently, and
        without creating new handles (which is not allowed during handle finalization).

        * heap/Strong.h:
        (JSC::Strong::swap): Use new SimpleClassHashTraits to avoid duplication.

        * heap/Weak.h:
        (JSC::Weak::isHashTableDeletedValue):
        (JSC::Weak::Weak):
        (JSC::Weak::swap):
        (JSC::Weak::hashTableDeletedValue): Ditto.

        * wtf/HashTraits.h:
        (WTF::SimpleClassHashTraits::constructDeletedValue):
        (WTF::SimpleClassHashTraits::isDeletedValue): Added SimpleClassHashTraits,
        which are analogous to SimpleClassVectorTraits, since they are used in a
        bunch of places.

        * wtf/RetainPtr.h: Use new SimpleClassHashTraits to avoid duplication.

        * wtf/text/StringHash.h: Use new SimpleClassHashTraits to avoid duplication.

2011-04-12  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Cleaned up some Vector traits, and added missing Vector traits for handles
        https://bugs.webkit.org/show_bug.cgi?id=58372

        * heap/Local.h: Inherit from SimpleClassVectorTraits to avoid duplication.

        * heap/Strong.h: Ditto.

        * heap/Weak.h: Ditto.

        * parser/JSParser.cpp: Fixed a traits error. No test case because this
        particular trait is not currently exercised by the parser.

        * runtime/UString.h: No need to override canInitializeWithMemset, since
        our base class sets it to true.

        * wtf/VectorTraits.h: Inherit from VectorTraitsBase to avoid duplication.

        * wtf/text/WTFString.h: No need to override canInitializeWithMemset, since
        our base class sets it to true.

2011-04-12  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        Reviewed by Eric Seidel.

        [Qt] Enable JIT build for SH4 platforms.
        https://bugs.webkit.org/show_bug.cgi?id=58317
        enable JIT build for QT backend  for SH4 platforms.

        * JavaScriptCore.pro:
        * wtf/Platform.h:

2011-04-11  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Alexey Proskuryakov.

        https://bugs.webkit.org/show_bug.cgi?id=58289

        Fix compilation on Solaris/Studio 12 C++ in wtf/FastMalloc.cpp,
        WTF::TCMalloc_PageHeap::runScavengerThread(void*) expected to return a value.

        * wtf/FastMalloc.cpp:
        (WTF::TCMalloc_PageHeap::runScavengerThread):

2011-04-11  Mark Rowe  <mrowe@apple.com>

        Fix the build.

        * JavaScriptCore.xcodeproj/project.pbxproj: Headers used outside of JavaScriptCore need to be marked as private.

2011-04-11  Anna Cavender  <annacc@chromium.org>

        Reviewed by Eric Carlson.

        Setup ENABLE(TRACK) feature define
        https://bugs.webkit.org/show_bug.cgi?id=53556


        * Configurations/FeatureDefines.xcconfig:

2011-04-11  Geoffrey Garen  <ggaren@apple.com>

        Try to fix a few builds.
        
        Updated a few more build configurations for file moves.

        * CMakeListsWinCE.txt:

2011-04-11  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 58263 - Use EncodedValueDescriptor on both JSVALUE32_64, JSVALUE64

        The JSJITInterface already uses EncodedValueDescriptor to access the tag/payload
        separately on JSVALUE64, even though EncodedValueDescriptor is not used in
        JSVALUE64's implementation of JSValue. Remove the separate definition for m_ptr
        on X86_64. Using the union allows us to remove a layer of makeImmediate()/
        immedaiteValue() methods.

        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitTagAsBoolImmediate):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_not):
        (JSC::JIT::emit_op_jeq_null):
        (JSC::JIT::emit_op_jneq_null):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):
        (JSC::JIT::emitSlow_op_not):
        * runtime/JSCell.h:
        * runtime/JSValue.h:
        * runtime/JSValueInlineMethods.h:
        (JSC::JSValue::encode):
        (JSC::JSValue::decode):
        (JSC::JSValue::operator==):
        (JSC::JSValue::operator!=):
        (JSC::JSValue::JSValue):
        (JSC::JSValue::operator bool):
        (JSC::JSValue::asInt32):
        (JSC::JSValue::isUndefinedOrNull):
        (JSC::JSValue::isBoolean):
        (JSC::JSValue::isCell):
        (JSC::JSValue::isInt32):
        (JSC::JSValue::asDouble):
        (JSC::JSValue::isNumber):
        (JSC::JSValue::asCell):

2011-04-11  Geoffrey Garen  <ggaren@apple.com>

        Try to fix a few builds.
        
        Updated a few more build configurations for file moves.

        * CMakeListsEfl.txt:
        * wscript:

2011-04-11  Geoffrey Garen  <ggaren@apple.com>

        Build fix: Updated a file name.

        * CMakeLists.txt:

2011-04-11  Geoffrey Garen  <ggaren@apple.com>

        Rubber-stamped by Sam Weinig.
        
        Moved remaining heap implementation files to the heap folder.

        * Android.mk:
        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/ConservativeRoots.cpp: Copied from runtime/ConservativeSet.cpp.
        * heap/ConservativeRoots.h: Copied from runtime/ConservativeSet.h.
        * heap/Handle.h:
        * heap/Heap.cpp:
        * heap/MachineStackMarker.cpp: Copied from runtime/MachineStackMarker.cpp.
        * heap/MachineStackMarker.h: Copied from runtime/MachineStackMarker.h.
        * heap/MarkStack.cpp: Copied from runtime/MarkStack.cpp.
        * heap/MarkStack.h: Copied from runtime/MarkStack.h.
        * heap/MarkStackPosix.cpp: Copied from runtime/MarkStackPosix.cpp.
        * heap/MarkStackSymbian.cpp: Copied from runtime/MarkStackSymbian.cpp.
        * heap/MarkStackWin.cpp: Copied from runtime/MarkStackWin.cpp.
        * heap/MarkedBlock.cpp: Copied from runtime/MarkedBlock.cpp.
        * heap/MarkedBlock.h: Copied from runtime/MarkedBlock.h.
        * heap/MarkedSpace.cpp: Copied from runtime/MarkedSpace.cpp.
        * heap/MarkedSpace.h: Copied from runtime/MarkedSpace.h.
        * interpreter/RegisterFile.cpp:
        * runtime/ConservativeSet.cpp: Removed.
        * runtime/ConservativeSet.h: Removed.
        * runtime/MachineStackMarker.cpp: Removed.
        * runtime/MachineStackMarker.h: Removed.
        * runtime/MarkStack.cpp: Removed.
        * runtime/MarkStack.h: Removed.
        * runtime/MarkStackPosix.cpp: Removed.
        * runtime/MarkStackSymbian.cpp: Removed.
        * runtime/MarkStackWin.cpp: Removed.
        * runtime/MarkedBlock.cpp: Removed.
        * runtime/MarkedBlock.h: Removed.
        * runtime/MarkedSpace.cpp: Removed.
        * runtime/MarkedSpace.h: Removed.

2011-04-11  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-04-09  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 58198 - Clean up JSValue implementation for JSVALUE64

        Remove JSNumberCell, JSImmediate, unify some methods between JSVALUE32_64/JSVALUE64

        JSNumberCell.h largely just contained the constructors for JSValue on JSVALUE64,
        which should not have been here.  JSImmediate mostly contained uncalled methods,
        along with the internal implementation of the JSValue constructors split unnecessarily
        across a number of layers of function calls. These could largely be merged back
        together. Many methods and constructors from JSVALUE32_64 and JSVALUE64 can by unified.

        The .cpp files were empty.

        Moving all these methods into JSValue.h seems to be a repro measurable regression, so
        I have kept these methods in a separate JSValueInlineMethods.h. Adding the 64-bit tag
        values as static const members of JSValue also measures as a repro regression, so I
        have made these #defines.

        * Android.mk:
        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
            - Removed JSImmediate.h, JSNumberCell.h.
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitLoad):
            - Removed class JSImmediate.
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
            - Removed class JSImmediate.
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
            - Removed class JSImmediate.
        * jit/JITArithmetic.cpp:
        (JSC::JIT::compileBinaryArithOpSlowCase):
            - Removed class JSImmediate.
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitJumpIfJSCell):
        (JSC::JIT::emitJumpIfNotJSCell):
        (JSC::JIT::emitJumpIfImmediateInteger):
        (JSC::JIT::emitJumpIfNotImmediateInteger):
        (JSC::JIT::emitFastArithDeTagImmediate):
        (JSC::JIT::emitFastArithDeTagImmediateJumpIfZero):
        (JSC::JIT::emitFastArithReTagImmediate):
        (JSC::JIT::emitTagAsBoolImmediate):
            - Removed class JSImmediate.
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_not):
        (JSC::JIT::emit_op_jeq_null):
        (JSC::JIT::emit_op_jneq_null):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):
        (JSC::JIT::emitSlow_op_not):
            - Removed class JSImmediate.
        * jit/JSInterfaceJIT.h:
            - Removed class JSImmediate.
        * runtime/JSCell.h:
            - Removed JSImmediate.h, JSNumberCell.h.
        * runtime/JSImmediate.cpp: Removed.
        * runtime/JSImmediate.h: Removed.
        * runtime/JSNumberCell.cpp: Removed.
        * runtime/JSNumberCell.h: Removed.
            - Removed.
        * runtime/JSObject.h:
            - Removed JSImmediate.h, JSNumberCell.h.
        * runtime/JSString.h:
            - Removed JSImmediate.h, JSNumberCell.h.
        * runtime/JSValue.h:
            - Added tags for JSVALUE64, moved out some JSVALUE32_64 methods, unified with JSVALUE64.
        * runtime/JSValueInlineMethods.h: Added.
        (JSC::JSValue::toInt32):
        (JSC::JSValue::toUInt32):
        (JSC::JSValue::isUInt32):
        (JSC::JSValue::asUInt32):
        (JSC::JSValue::uncheckedGetNumber):
        (JSC::JSValue::toJSNumber):
        (JSC::jsNaN):
        (JSC::JSValue::getNumber):
        (JSC::JSValue::getBoolean):
        (JSC::JSValue::JSValue):
        (JSC::JSValue::encode):
        (JSC::JSValue::decode):
        (JSC::JSValue::operator bool):
        (JSC::JSValue::operator==):
        (JSC::JSValue::operator!=):
        (JSC::JSValue::isUndefined):
        (JSC::JSValue::isNull):
        (JSC::JSValue::isUndefinedOrNull):
        (JSC::JSValue::isCell):
        (JSC::JSValue::isInt32):
        (JSC::JSValue::isDouble):
        (JSC::JSValue::isTrue):
        (JSC::JSValue::isFalse):
        (JSC::JSValue::tag):
        (JSC::JSValue::payload):
        (JSC::JSValue::asInt32):
        (JSC::JSValue::asDouble):
        (JSC::JSValue::asCell):
        (JSC::JSValue::isNumber):
        (JSC::JSValue::isBoolean):
        (JSC::JSValue::makeImmediate):
        (JSC::JSValue::immediateValue):
        (JSC::reinterpretDoubleToIntptr):
        (JSC::reinterpretIntptrToDouble):
            - Methods moved here from JSImmediate.h/JSNumberCell.h/JSValue.h.
        * runtime/Operations.h:
            - Removed JSImmediate.h, JSNumberCell.h.
        * wtf/StdLibExtras.h:
            - Export bitwise_cast.

2011-04-11  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        Reviewed by Oliver Hunt.

        SH4 JIT SUPPORT.
        https://bugs.webkit.org/show_bug.cgi?id=44329

        Add JIT remaining part for SH4 platforms.

        * assembler/MacroAssemblerSH4.h:
        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        * jit/JITOpcodes32_64.cpp:
        * jit/JITPropertyAccess32_64.cpp:
        * jit/JITStubs.cpp:
        * jit/JITStubs.h:
        * jit/JSInterfaceJIT.h:

2011-04-10  Geoffrey Garen  <ggaren@apple.com>

        Rubber-stamped by Beth Dakin.

        Moved Heap.h and Heap.cpp to the heap folder, because anything less 
        would be uncivilized.

        * Android.mk:
        * CMakeLists.txt:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * heap/Heap.cpp: Copied from JavaScriptCore/runtime/Heap.cpp.
        * heap/Heap.h: Copied from JavaScriptCore/runtime/Heap.h.
        * runtime/Heap.cpp: Removed.
        * runtime/Heap.h: Removed.

2011-04-10  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Darin Adler.

        Remove duplicated code from AtomicString::fromUTF8()
        https://bugs.webkit.org/show_bug.cgi?id=53711

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * wtf/text/AtomicString.cpp:
        (WTF::AtomicString::fromUTF8Internal):
        * wtf/text/AtomicString.h:
        (WTF::AtomicString::fromUTF8):
        * wtf/unicode/UTF8.cpp:
        (WTF::Unicode::calculateStringHashAndLengthFromUTF8):
        * wtf/unicode/UTF8.h:

2011-04-10  Maciej Stachowiak  <mjs@apple.com>

        Not reviewed.

        Fix build (at least on Lion) by adding some newish header files to
        PrivateHeaders.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-04-09  Geoffrey Garen  <ggaren@apple.com>

        Not reviewed.

        Try recommitting some things svn left out of its last commit.

        * heap/Handle.h:
        (JSC::HandleBase::operator!):
        (JSC::HandleBase::HandleBase):
        (JSC::HandleBase::slot):
        (JSC::HandleBase::setSlot):
        (JSC::Handle::Handle):
        * heap/HandleHeap.cpp:
        (JSC::HandleHeap::markWeakHandles):
        (JSC::HandleHeap::finalizeWeakHandles):
        (JSC::HandleHeap::isValidWeakNode):
        * heap/HandleHeap.h:
        (JSC::HandleHeap::globalData):

2011-04-08  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        A few heap-related renames and file moves.
        
        WeakGCPtr<T> => Weak<T>
        Global<T> => Strong<T>
        collector/ => heap/
        collector/* => heap/*
        runtime/WeakGCPtr.h => heap/Weak.h
        
        (Eventually, even more files should move into the heap directory. Like
        Heap.h and Heap.cpp, for example.)

        * API/JSClassRef.h:
        * CMakeLists.txt:
        * GNUmakefile.am:
        * GNUmakefile.list.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pri:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreCommon.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
        * JavaScriptCore.vcproj/jsc/jscCommon.vsprops:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/SamplingTool.h:
        * bytecompiler/BytecodeGenerator.h:
        * collector: Removed.
        * collector/handles: Removed.
        * collector/handles/Global.h: Removed.
        * collector/handles/Handle.h: Removed.
        * collector/handles/HandleHeap.cpp: Removed.
        * collector/handles/HandleHeap.h: Removed.
        * collector/handles/HandleStack.cpp: Removed.
        * collector/handles/HandleStack.h: Removed.
        * collector/handles/Local.h: Removed.
        * collector/handles/LocalScope.h: Removed.
        * heap: Copied from collector.
        * heap/Handle.h: Copied from collector/handles/Handle.h.
        * heap/HandleHeap.cpp: Copied from collector/handles/HandleHeap.cpp.
        * heap/HandleHeap.h: Copied from collector/handles/HandleHeap.h.
        * heap/HandleStack.cpp: Copied from collector/handles/HandleStack.cpp.
        * heap/HandleStack.h: Copied from collector/handles/HandleStack.h.
        * heap/Local.h: Copied from collector/handles/Local.h.
        * heap/LocalScope.h: Copied from collector/handles/LocalScope.h.
        * heap/Strong.h: Copied from collector/handles/Global.h.
        (JSC::Strong::Strong):
        (JSC::Strong::~Strong):
        (JSC::Strong::operator=):
        * heap/Weak.h: Copied from runtime/WeakGCPtr.h.
        (JSC::Weak::Weak):
        (JSC::Weak::~Weak):
        * heap/handles: Removed.
        * interpreter/RegisterFile.h:
        * jit/JITStubs.cpp:
        (JSC::JITThunks::hostFunctionStub):
        * jit/JITStubs.h:
        * runtime/Structure.h:
        * runtime/WeakGCPtr.h: Removed.

2011-04-08  Alpha Lam  <hclam@chromium.org>

        Unreviewed, rolling out r83335.
        http://trac.webkit.org/changeset/83335
        https://bugs.webkit.org/show_bug.cgi?id=53556

        GTK and QT bots are broken

        * Configurations/FeatureDefines.xcconfig:

2011-04-08  Gavin Barraclough  <barraclough@apple.com>

        Ooops, typo, build fix.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parse):

2011-04-08  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 58154 - Add support for comparison operators to the DFG JIT.

        Add support for <, <=, ==, ===, and also !.  Add support for all corresponding
        bytecode ops, including the not- and -null forms.  Initially add functionally
        correct support, we'll revisit the performance.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::constantNull):
        (JSC::DFG::ByteCodeParser::parse):
            - Add support for parsing of bytecode opcodes, 
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::callOperation):
            - Add new operation call types, return bool values.
        * dfg/DFGNode.h:
            - Add new node types.
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
            - Add code generation for new nodes.
        * dfg/DFGOperations.cpp:
        (JSC::DFG::operationCompareLess):
        (JSC::DFG::operationCompareLessEq):
        (JSC::DFG::operationCompareEq):
        (JSC::DFG::operationCompareStrictEq):
        (JSC::DFG::dfgConvertJSValueToBoolean):
        * dfg/DFGOperations.h:
            - Add operation callbacks to implement new ops.
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
            - Add code generation for new nodes.
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
            - Switched to a simpler <0 check, rather than relying on an internal value in JSImmediate.
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompilePatchGetArrayLength):
            - Switched to a simpler <0 check, rather than relying on an internal value in JSImmediate.
        * runtime/JSImmediate.h:
            - Make tag values public, rather than relying on a friend - this matches JSVALUE32_64.

2011-04-07  Anna Cavender  <annacc@chromium.org>

        Reviewed by Eric Carlson.

        Setup ENABLE(TRACK) feature define
        https://bugs.webkit.org/show_bug.cgi?id=53556


        * Configurations/FeatureDefines.xcconfig:

2011-04-07  Balazs Kelemen  <kbalazs@webkit.org>

        Reviewed by Kenneth Rohde Christiansen.

        [WK2][Qt][GTK] Introduce common use flag for the shared UNIX domain socket IPC implementation
        https://bugs.webkit.org/show_bug.cgi?id=58030

        * wtf/Platform.h: Introduce USE(UNIX_DOMAIN_SOCKETS) for WebKit2.

2011-04-08  Adam Roben  <aroben@apple.com>

        Clean build fix

        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd: Don't try to delete directories that
        don't exist. Also switched from del /s to rmdir /s, which has the benefit of deleting the
        directory itself in addition to the files it contains.

2011-04-07  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Maciej Stachowiak.

        Some Handle<T> cleanup
        https://bugs.webkit.org/show_bug.cgi?id=58109

        * bytecode/SamplingTool.h: Sorted alphabetically because that's the
        WebKit style. Added a Global.h #include that was previously missing
        but harmless.

        * collector/handles/Global.h:
        (JSC::Global::Global): Added a null constructor. No need for a special
        tag, and the tag is incompatible with some data structures.
        
        (JSC::Global::isHashTableDeletedValue):
        (JSC::Global::~Global):
        (JSC::Global::set):
        (JSC::Global::operator=):
        (JSC::Global::clear):
        (JSC::Global::hashTableDeletedValue): Reordered constructors to be near
        each other.

        (JSC::Global::setWithWriteBarrier): Renamed internalSet to
        setWithWriteBarrier for clarity, and funneled more code into using set
        and setWithWriteBarrier to reduce duplication.

        * collector/handles/Handle.h:
        (JSC::HandleBase::operator!):
        (JSC::HandleBase::HandleBase): Removed isEmpty(), since we already have
        boolean and ! operators.

        (JSC::HandleBase::slot):
        (JSC::HandleBase::setSlot):
        (JSC::Handle::Handle): Added general support for null Handles. This was
        previously outlawed by ASSERTs, but our code has grown to support and
        rely on null Handles.
        
        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::markWeakHandles):
        (JSC::HandleHeap::finalizeWeakHandles):
        (JSC::HandleHeap::isValidWeakNode): Migrated from isValidWeakHandle,
        and beefed this up a bit.

        * collector/handles/HandleHeap.h:
        (JSC::HandleHeap::globalData): Added accessor, used by some new set functions.

        * collector/handles/Local.h: Moved hash traits to the bottom of the file,
        since this file is about the Local class, not the traits.

        (JSC::::Local): Updated for removal of invalidate().

        (JSC::::operator): Deployed "using" to avoid a lot of this->
        template funny business.

        (JSC::::setWithSlotCheck): Renamed from internalSet, more specific now.

        * interpreter/RegisterFile.h:
        (JSC::RegisterFile::RegisterFile): Updated to use null constructor.

        * jit/JITStubs.cpp:
        (JSC::JITThunks::hostFunctionStub):

        * runtime/JSPropertyNameIterator.h:
        (JSC::Structure::setEnumerationCache):
        * runtime/Structure.h: Removed clearEnumerationCache
        because it was an unused holdover from when the enumeration cache was
        not a handle.

        * runtime/WeakGCMap.h:
        (JSC::WeakGCMap::set): Finish initializing our handle before putting it
        in the table. This seemed more logical, and at one point was required
        to avoid triggering an ASSERT.

        * runtime/WeakGCPtr.h: Inherit from Handle instead of rolling our own
        handle-like behavior, to avoid duplication.

        (JSC::WeakGCPtr::WeakGCPtr):
        (JSC::WeakGCPtr::~WeakGCPtr):
        (JSC::WeakGCPtr::get):
        (JSC::WeakGCPtr::clear):
        (JSC::WeakGCPtr::set):
        (JSC::WeakGCPtr::setWithWriteBarrier): Removed duplicate code and
        standardized on Handle idioms.

2011-04-07  Adam Barth  <abarth@webkit.org>

        Reviewed by Martin Robinson.

        Refactor Gtk build system to separate list of files
        https://bugs.webkit.org/show_bug.cgi?id=58090

        This is the first step towards generating part of the GTK build system
        using GYP.  In the first iteration, our plan is to just generate the
        list of files.  This patch is the first step, which is to separate out
        the part of JavaScriptCore build system that we intend to generate from
        the rest of the build system.

        * GNUmakefile.am:
        * GNUmakefile.list.am: Added.

2011-04-07  Zoltan Herczeg  <zherczeg@webkit.org>

        Reviewed by Gavin Barraclough.

        Mapping booleans the same way as integers
        https://bugs.webkit.org/show_bug.cgi?id=56913

        Instead of having a seperate tag field for booleans,
        the logical values are stored in the payload field
        (for JSValue32_64 representation).

        1.007x speedup on SunSpider.

        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitStoreBool):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_instanceof):
        (JSC::JIT::emit_op_not):
        (JSC::JIT::emit_op_jfalse):
        (JSC::JIT::emitSlow_op_jfalse):
        (JSC::JIT::emit_op_jtrue):
        (JSC::JIT::emitSlow_op_jtrue):
        (JSC::JIT::emit_op_jeq_null):
        (JSC::JIT::emit_op_jneq_null):
        (JSC::JIT::emit_op_eq):
        (JSC::JIT::emitSlow_op_eq):
        (JSC::JIT::emit_op_neq):
        (JSC::JIT::emitSlow_op_neq):
        (JSC::JIT::compileOpStrictEq):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):
        * jit/JSInterfaceJIT.h:
        * runtime/JSValue.h:
        (JSC::JSValue::JSValue):
        (JSC::JSValue::isTrue):
        (JSC::JSValue::isFalse):
        (JSC::JSValue::getBoolean):

2011-04-07  Eric Seidel  <eric@webkit.org>

        Reviewed by Adam Barth.

        Add stub support for generating Gtk build system from gyp
        https://bugs.webkit.org/show_bug.cgi?id=58086

        This does not produce a buildable JavaScriptCore, but it
        does allow running gyp/configure --port=gtk and having
        it generate a gtk.Makefile which we can use for testing
        the rest of the plumbing.

        * gyp/gtk.gyp: Added.

2011-04-07  Andrew Scherkus  <scherkus@chromium.org>

        Revert ENABLE_TRACK patch due to compile failures.

        * Configurations/FeatureDefines.xcconfig:

2011-04-07  Adam Barth  <abarth@webkit.org>

        Fix whitespace in GNUmakefile.am.

        * GNUmakefile.am:

2011-04-07  Gavin Barraclough  <barraclough@apple.com>

        Fix a couple of typos in comments that Darin spotted.

        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_not):
        * runtime/JSImmediate.h:

2011-04-06  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoff Garen.
        Bug 58057 - Store boolean payload in low bit of JSImmediate

        And remove some uncalled functions from JSImmediate.h

        * jit/JITInlineMethods.h:
        (JSC::JIT::emitTagAsBoolImmediate):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_not):
        * runtime/JSImmediate.h:
        (JSC::JSImmediate::makeInt):
        (JSC::JSImmediate::makeBool):
        (JSC::JSImmediate::intValue):
        (JSC::JSImmediate::boolValue):
        (JSC::JSImmediate::asInt32):
        (JSC::JSImmediate::toDouble):
        (JSC::JSValue::asInt32):
        (JSC::JSValue::isUInt32):
        (JSC::JSValue::asUInt32):

2011-04-07  Liang Qi  <liang.qi@nokia.com>

        Reviewed by Laszlo Gombos.

        [Qt][Symbian] Enable webkit build with GCCE on Symbian.
        https://bugs.webkit.org/show_bug.cgi?id=57841

        * wtf/MathExtras.h: GCCE compiler doesn't support those std static functions.

2011-04-06  Dai Mikurube  <dmikurube@chromium.org>

        Reviewed by David Levin.

        Add QUOTA build flag for unified quota API
        https://bugs.webkit.org/show_bug.cgi?id=57918

        * Configurations/FeatureDefines.xcconfig: Added QUOTA build flag

2011-04-06  Kevin Ollivier  <kevino@theolliviers.com>
        
        Reviewed by Darin Adler.
        
        Make sure JS_EXPORT_PRIVATE is an empty define when we aren't using the export macros.
        
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * config.h:

2011-04-06  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Stop JSObject::isUsingInlineStorage() from using the structure
        https://bugs.webkit.org/show_bug.cgi?id=57986

        Make the isUsingInlineStorage() implementation just look at
        whether the property storage is inside the object.

        * runtime/JSObject.h:
        (JSC::JSObject::isUsingInlineStorage):
        (JSC::JSObject::JSObject):

2011-04-06  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by Geoff Garen.

        Update comments documenting JSVALUE64/JSVALUE32_64 JSValue representations.

        * runtime/JSImmediate.h:
        * runtime/JSValue.h:

2011-04-06  Lucas De Marchi  <lucas.demarchi@profusion.mobi>

        cmake: Fix build for ARMv7

        * CMakeLists.txt: add missing file.

2011-04-06  Liang Qi  <liang.qi@nokia.com>

        Reviewed by Benjamin Poulain.

        Correct a include file name.
        https://bugs.webkit.org/show_bug.cgi?id=57839

        * wtf/PageAllocatorSymbian.h: It should be case sensitive. This fix 
        builds on Unix hosts.

2011-04-06  Adam Roben  <aroben@apple.com>

        Build fix after r83056

        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd: Added property svn:executable.

2011-04-06  Adam Roben  <aroben@apple.com>

        Move JavaScriptCoreGenerated's file-copying logic out to a new script

        Hopefully this will make it easier to modify this logic in the future. I also made the
        script much quieter than the old logic, since it didn't seem helpful to see long lists of
        filenames during the copying phase.

        If we like this new style, we could copy it for our other projects.

        Fixes <http://webkit.org/b/57950> JavaScriptCoreGenerated's file-copying logic is hard to
        modify and noisy

        Reviewed by Steve Falkenburg.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.make: Moved logic to copy
        files from here...
        * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd: ...to here. (Added.)

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.vcproj: Added copy-files.cmd
        for convenience.

2011-04-05  Geoffrey Garen  <ggaren@apple.com>

        Try to fix the Windows build.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Who likes export files? I do!

2011-04-05  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Introduced the concept of opaque roots, in preparation for marking the DOM with them
        https://bugs.webkit.org/show_bug.cgi?id=57903

        * JavaScriptCore.exp: Who likes export files? I do!

        * collector/handles/HandleHeap.cpp:
        (JSC::isValidWeakHandle): Factored out a helper function for ASSERTs.

        (JSC::WeakHandleOwner::~WeakHandleOwner): Moved from header to avoid
        weak linkage problems.

        (JSC::WeakHandleOwner::isReachableFromOpaqueRoots): New callback.
        Currently unused.

        (JSC::WeakHandleOwner::finalize): Switched from pure virtual to a
        default empty implementation, since not all clients necessarily want
        or need non-trivial finalizers.

        (JSC::HandleHeap::markWeakHandles): Split updateWeakHandles into two
        passes. The first pass marks all reachable weak handles. The second pass
        finalizes all unreachable weak handles. This must be two passes because
        we don't know the set of finalizable weak handles until we're done
        marking all weak handles.

        (JSC::HandleHeap::finalizeWeakHandles): Use new helper function.

        * collector/handles/HandleHeap.h: Ditto.

        * runtime/Heap.cpp: 
        (JSC::Heap::destroy):
        (JSC::Heap::markRoots):
        (JSC::Heap::reset): Split out handle marking from handle finalization.

        * runtime/MarkStack.cpp:
        (JSC::MarkStack::reset):
        * runtime/MarkStack.h:
        (JSC::MarkStack::addOpaqueRoot):
        (JSC::MarkStack::containsOpaqueRoot):
        (JSC::MarkStack::opaqueRootCount):
        (JSC::HeapRootMarker::markStack): New helper functions for managing the
        set of opaque roots.

        * runtime/WeakGCMap.h:
        (JSC::WeakGCMap::finalize): Renamed to match parent class declaration.

2011-04-05  Balazs Kelemen  <kbalazs@webkit.org>

        Reviewed by Darin Adler.

        Build fix for YarrParser.h
        https://bugs.webkit.org/show_bug.cgi?id=57822

        * yarr/YarrParser.h:
        (JSC::Yarr::Parser::CharacterClassParserDelegate::CharacterClassParserDelegate):

2011-04-05  Steve Falkenburg  <sfalken@apple.com>

        Follow-up Windows build fix.
        Don't skip react-to-vsprops-changes.py for all production builds,
        only those initiated via JavaScriptCore.make.

        * JavaScriptCore.vcproj/JavaScriptCore.make:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.make:

2011-04-05  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        REGRESSION (r82849): 85,000+ JSC-related leaks seen on SnowLeopard Intel Leaks
        https://bugs.webkit.org/show_bug.cgi?id=57857

        Whoops, accidentally removed a deref().

        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::deref):

2011-04-05  Steve Falkenburg  <sfalken@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.vcproj: Add per-configuration vsprops files.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedCommon.vsprops: Removed inheritance from common.vsprops.
        Set production environment variable before calling make.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedDebug.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedDebugAll.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedDebugCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedProduction.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedRelease.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedReleaseCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGeneratedReleasePGO.vsprops: Added.

2011-04-05  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make caches window show more info about non-jsobject GC values
        https://bugs.webkit.org/show_bug.cgi?id=57874

        Add ClassInfo to the various internal JS types that currently
        don't have any, and make the text for caches window show the
        classname for non-JSObject instances.

        * runtime/Executable.cpp:
        * runtime/Executable.h:
        (JSC::ExecutableBase::createStructure):
        (JSC::NativeExecutable::createStructure):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/Heap.cpp:
        (JSC::TypeCounter::typeName):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/ScopeChain.cpp:
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::createStructure):
        * runtime/StructureChain.cpp:
        * runtime/StructureChain.h:
        (JSC::StructureChain::createStructure):

2011-04-05  Nikolas Zimmermann  <nzimmermann@rim.com>

        Reviewed by Andreas Kling.

        Cleanup StringConcatenate
        https://bugs.webkit.org/show_bug.cgi?id=57836

        Don't use PassRefPtr in local variables, properly store in RefPtrs and release on return.
        Add a makeString() variant taking 9 arguments, needed by a follow-up patch.

        * wtf/text/StringConcatenate.h:
        (WTF::tryMakeString):
        (WTF::makeString):

2011-04-04  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r82876.
        http://trac.webkit.org/changeset/82876
        https://bugs.webkit.org/show_bug.cgi?id=57816

        Caused a lot of test crashes (Requested by tkent on #webkit).

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * wtf/FastMalloc.cpp:
        (WTF::tryFastMalloc):
        (WTF::fastMalloc):
        (WTF::tryFastCalloc):
        (WTF::fastCalloc):
        (WTF::fastFree):
        (WTF::tryFastRealloc):
        (WTF::fastRealloc):
        (WTF::fastMallocSize):
        (WTF::TCMalloc_PageHeap::isScavengerSuspended):
        (WTF::TCMalloc_PageHeap::scheduleScavenger):
        (WTF::TCMalloc_PageHeap::suspendScavenger):
        (WTF::TCMalloc_PageHeap::signalScavenger):
        (WTF::TCMallocStats::malloc):
        (WTF::TCMallocStats::free):
        (WTF::TCMallocStats::fastCalloc):
        (WTF::TCMallocStats::tryFastCalloc):
        (WTF::TCMallocStats::calloc):
        (WTF::TCMallocStats::fastRealloc):
        (WTF::TCMallocStats::tryFastRealloc):
        (WTF::TCMallocStats::realloc):
        (WTF::TCMallocStats::fastMallocSize):
        * wtf/FastMalloc.h:
        (WTF::Internal::fastMallocMatchValidationType):
        (WTF::Internal::fastMallocMatchValidationValue):
        (WTF::Internal::setFastMallocMatchValidationType):
        (WTF::fastMallocMatchValidateFree):
        * wtf/Platform.h:

2011-04-04  Oliver Hunt  <oliver@apple.com>

        Reviewed by Antti Koivisto.

        Stop JSCell.h from including Structure.h
        https://bugs.webkit.org/show_bug.cgi?id=57809

        * runtime/GetterSetter.h:
        * runtime/JSAPIValueWrapper.h:
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::toThisObject):
        * runtime/JSString.h:
        * runtime/ScopeChain.h:
        * runtime/Structure.h:
        (JSC::JSCell::isObject):
        (JSC::JSCell::isString):
        (JSC::JSCell::classInfo):
        (JSC::JSCell::createDummyStructure):
        (JSC::JSValue::needsThisConversion):
        (JSC::MarkStack::internalAppend):
        * runtime/StructureChain.h:

2011-04-04  Oliver Hunt  <oliver@apple.com>

        Fix clang build.

        * wtf/FastMalloc.cpp:
        (WTF::fastMalloc):
        (WTF::fastCalloc):
        (WTF::fastRealloc):

2011-04-04  Oliver Hunt  <oliver@apple.com>

        Remove accidental change to Platform.h

        * wtf/Platform.h:

2011-04-04  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Fixed a weak-handle-related leak in RegisterFile
        https://bugs.webkit.org/show_bug.cgi?id=57793

        * interpreter/RegisterFile.cpp: Nixed leaky GlobalObjectNotifier.
        * interpreter/RegisterFile.h:
        (JSC::RegisterFile::GlobalObjectOwner::finalize):
        (JSC::RegisterFile::RegisterFile): Replaced GlobalObjectNotifier with
        a per-RegisterFile weak handle owner, which does not leak.

        * runtime/WeakGCPtr.h:
        (JSC::WeakGCPtr::set): Allow set() to take a context argument, since
        RegisterFile now needs this. (Seems like it was an accidental omission
        all along.)

2011-04-04  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make malloc validation useful
        https://bugs.webkit.org/show_bug.cgi?id=57502

        This patch changes FAST_MALLOC_MATCH_VALIDATION with a general
        corruption check that tags the beginning and end of all allocations
        to check for write overflows and overwrites the contents of
        memory on free in order to (hopefully) show up use-after-free issues
        sooner.

        We also turn it on by default for debug builds.

        * JavaScriptCore.exp:
        * wtf/FastMalloc.cpp:
        (WTF::tryFastMalloc):
        (WTF::fastMalloc):
        (WTF::tryFastCalloc):
        (WTF::fastCalloc):
        (WTF::fastFree):
        (WTF::tryFastRealloc):
        (WTF::fastRealloc):
        (WTF::TCMalloc_PageHeap::isScavengerSuspended):
        (WTF::TCMalloc_PageHeap::scheduleScavenger):
        (WTF::TCMalloc_PageHeap::suspendScavenger):
        (WTF::TCMalloc_PageHeap::signalScavenger):
        (WTF::TCMallocStats::malloc):
        (WTF::TCMallocStats::free):
        (WTF::TCMallocStats::fastCalloc):
        (WTF::TCMallocStats::tryFastCalloc):
        (WTF::TCMallocStats::calloc):
        (WTF::TCMallocStats::fastRealloc):
        (WTF::TCMallocStats::tryFastRealloc):
        (WTF::TCMallocStats::realloc):
        * wtf/FastMalloc.h:
        (WTF::Internal::fastMallocValidationHeader):
        (WTF::Internal::fastMallocValidationSuffix):
        (WTF::Internal::fastMallocMatchValidationType):
        (WTF::Internal::setFastMallocMatchValidationType):
        (WTF::fastMallocMatchValidateFree):
        (WTF::fastMallocValidate):
        * wtf/Platform.h:

2011-04-04  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Renamed clearWeakPointers => updateWeakHandles and removed misleading comment
        https://bugs.webkit.org/show_bug.cgi?id=57790

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::updateWeakHandles): Updated for rename.

        * collector/handles/HandleHeap.h: Removed comment claiming that this
        function should only be called during teardown, because it's actually
        called after every GC pass.

        * runtime/Heap.cpp:
        (JSC::Heap::destroy):
        (JSC::Heap::markRoots): Updated for rename.

2011-04-04  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Standardized handling of handles for immediate values
        https://bugs.webkit.org/show_bug.cgi?id=57788

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::clearWeakPointers): Don't check for null or non-cell
        values here, because our write barrier guarantees that such values are
        not in the weak list.

        (JSC::HandleHeap::writeBarrier): Standardized on checking for null before
        checking for cell, and on using early return instead of if/else.

        * collector/handles/HandleHeap.h:
        (JSC::HandleHeap::deallocate):
        (JSC::HandleHeap::makeWeak): Ditto.

2011-04-04  Geoffrey Garen  <ggaren@apple.com>

        Not reviewed.

        Removed a redundant variable from HandleHeap
        https://bugs.webkit.org/show_bug.cgi?id=57786
        
        Forgot to commit the file that actually removes the data member!
        
        * collector/handles/HandleHeap.h:

2011-04-04  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed a redundant variable from HandleHeap
        https://bugs.webkit.org/show_bug.cgi?id=57786
        
        We don't need a specific variable to indicate that we're in the middle
        of the finalization phase, since m_nextToFinalize already does this.

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::HandleHeap):
        (JSC::HandleHeap::clearWeakPointers):
        (JSC::HandleHeap::writeBarrier):

2011-04-04  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Renamed Finalizer => WeakHandleOwner (in preparation for adding a reachability callback)
        https://bugs.webkit.org/show_bug.cgi?id=57775
        
        Also renamed noFinalizer => emptyWeakOwner, since this is really an
        optimization for a weak owner with empty callbacks.

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::clearWeakPointers): Updated for renames. Removed
        redundant initialization of m_nextToFinalize. Moved deletion check inside
        weak owner check, since the weak owner can't delete the node if there is
        no weak owner!

        * collector/handles/HandleHeap.h:
        (JSC::WeakHandleOwner::~WeakHandleOwner):
        (JSC::HandleHeap::makeWeak): Updated for renames.

        (JSC::HandleHeap::hasWeakOwner): Changed getFinalizer to hasWeakOwner,
        to clarify this function's role in assertions.

        (JSC::HandleHeap::Node::Node):
        (JSC::HandleHeap::Node::makeWeak):
        (JSC::HandleHeap::Node::isWeak):
        (JSC::HandleHeap::Node::weakOwner):
        (JSC::HandleHeap::Node::weakOwnerContext):
        (JSC::HandleHeap::Node::emptyWeakOwner):
        * interpreter/RegisterFile.cpp:
        (JSC::RegisterFile::globalObjectCollectedNotifier):
        * interpreter/RegisterFile.h:
        * runtime/WeakGCMap.h:
        * runtime/WeakGCPtr.h:
        (JSC::WeakGCPtr::WeakGCPtr):
        (JSC::WeakGCPtr::set): Updated for renames.

2011-04-04  Oliver Hunt  <oliver@apple.com>

        Fix WinCE build.

        * bytecode/Instruction.h:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::tryCachePutByID):
        (JSC::Interpreter::tryCacheGetByID):

2011-04-04  Adam Roben  <aroben@apple.com>

        Delete mt.dep files when doing a clean build due to .vsprops file changes

        Apparently this is yet another file that Visual Studio can't figure out it needs to rebuild.

        Fixes <http://webkit.org/b/57777> r82850 failed to build on Windows Debug (Build)

        Reviewed by Brian Weinstein.

        * JavaScriptCore.vcproj/JavaScriptCore/react-to-vsprops-changes.py:
        (main): Added dep to the list of extensions we look for when choosing files to delete.

2011-04-01  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make StructureChain GC allocated
        https://bugs.webkit.org/show_bug.cgi?id=56695

        Make StructureChain GC allocated, and make the various owners
        mark it correctly.

        * JavaScriptCore.exp:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        (JSC::CodeBlock::derefStructures):
        (JSC::CodeBlock::refStructures):
        (JSC::CodeBlock::markAggregate):
        * bytecode/Instruction.h:
        (JSC::PolymorphicAccessStructureList::PolymorphicStubInfo::set):
        (JSC::PolymorphicAccessStructureList::PolymorphicAccessStructureList):
        (JSC::PolymorphicAccessStructureList::derefStructures):
        (JSC::PolymorphicAccessStructureList::markAggregate):
        (JSC::Instruction::Instruction):
        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::deref):
        (JSC::StructureStubInfo::markAggregate):
        * bytecode/StructureStubInfo.h:
        (JSC::StructureStubInfo::initGetByIdChain):
        (JSC::StructureStubInfo::initPutByIdTransition):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionCall):
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionApply):
        * collector/handles/Handle.h:
        (JSC::HandleConverter::operator->):
        (JSC::HandleConverter::operator*):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_jneq_ptr):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_jneq_ptr):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::tryCachePutByID):
        (JSC::JITThunks::tryCacheGetByID):
        (JSC::getPolymorphicAccessStructureListSlot):
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSCell.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::markIfNeeded):
        * runtime/JSGlobalObject.h:
        (JSC::Structure::prototypeChain):
        * runtime/JSObject.h:
        (JSC::JSObject::putDirectInternal):
        (JSC::JSObject::markChildrenDirect):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::create):
        (JSC::JSPropertyNameIterator::get):
        (JSC::JSPropertyNameIterator::markChildren):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::setCachedPrototypeChain):
        * runtime/JSZombie.cpp:
        (JSC::JSZombie::leakedZombieStructure):
        * runtime/JSZombie.h:
        * runtime/MarkStack.h:
        (JSC::MarkStack::append):
        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::sweep):
        * runtime/Structure.cpp:
        (JSC::Structure::addPropertyTransition):
        * runtime/Structure.h:
        (JSC::Structure::markAggregate):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::StructureChain):
        (JSC::StructureChain::~StructureChain):
        (JSC::StructureChain::markChildren):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):
        (JSC::StructureChain::createStructure):
        * runtime/WriteBarrier.h:
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):

2011-04-01  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed some complexity from HandleHeap
        https://bugs.webkit.org/show_bug.cgi?id=57650
        
        Eliminated pointer-tagging flags.
        
        Tied being weak to having a finalizer (or at least a finalizer sentinel).

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::clearWeakPointers): Removed the special self-destroying
        flag. It was unused. If we bring it back, we'll probably use a shared
        autodeallocating finalizer instead.

        * collector/handles/HandleHeap.h:
        (JSC::HandleHeap::makeWeak): makeWeak and adding a finalizer are now
        a single, atomic operation -- this makes the relationship between
        finalizers and weak pointers clearer, and impossible to get wrong.

        (JSC::HandleHeap::Node::Node):
        (JSC::HandleHeap::Node::handleHeap): No more flags.

        (JSC::HandleHeap::Node::makeWeak):
        (JSC::HandleHeap::Node::isWeak): Ditto above. We use a special sentienl
        value in the finalizer slot to indicate that a handle is weak but doesn't
        require an external function call for finalization.

2011-04-01  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed WeakGCMap::deprecatedRemove because it was deprecated and unused
        https://bugs.webkit.org/show_bug.cgi?id=57648

        * runtime/WeakGCMap.h:

2011-04-01  Adam Roben  <aroben@apple.com>

        Maintain the invariant that Lexer::m_current is set to -1 when at the end of the code buffer

        Covered by existing tests.

        Fixes <http://webkit.org/b/56699>.

        Reviewed by Oliver Hunt.

        * parser/Lexer.h:
        (JSC::Lexer::setOffset): Copied code from Lexer::shift to update m_current, because
        supposedly the idiom that function uses is fast.

2011-03-31  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        Reviewed by Oliver Hunt.

        SH4 JIT SUPPORT.
        https://bugs.webkit.org/show_bug.cgi?id=44329

        Add YARR support for SH4 platforms (disabled by default).

        * GNUmakefile.am:
        * assembler/MacroAssembler.h:
        * assembler/MacroAssemblerSH4.cpp: Added.
        * assembler/MacroAssemblerSH4.h: Added.
        * assembler/SH4Assembler.h: Added.
        * yarr/YarrJIT.cpp:

2011-03-30  Adam Roben  <aroben@apple.com>

        Clean build fix

        * JavaScriptCore.vcproj/JavaScriptCore.sln: Serialized project dependencies so projects
        don't try to build in parallel (which doesn't mesh with our buildfailed mechanism).

2011-03-30  Oliver Hunt  <oliver@apple.com>

        Rollout r82500

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        (JSC::CodeBlock::derefStructures):
        (JSC::CodeBlock::refStructures):
        (JSC::CodeBlock::markAggregate):
        * bytecode/Instruction.h:
        (JSC::PolymorphicAccessStructureList::PolymorphicStubInfo::set):
        (JSC::PolymorphicAccessStructureList::PolymorphicAccessStructureList):
        (JSC::PolymorphicAccessStructureList::derefStructures):
        (JSC::Instruction::Instruction):
        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::deref):
        * bytecode/StructureStubInfo.h:
        (JSC::StructureStubInfo::initGetByIdChain):
        (JSC::StructureStubInfo::initPutByIdTransition):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionCall):
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionApply):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_jneq_ptr):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_jneq_ptr):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):
        * jit/JITStubs.cpp:
        (JSC::getPolymorphicAccessStructureListSlot):
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSCell.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::markIfNeeded):
        * runtime/JSGlobalObject.h:
        (JSC::Structure::prototypeChain):
        * runtime/JSObject.h:
        (JSC::JSObject::markChildrenDirect):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::create):
        (JSC::JSPropertyNameIterator::get):
        (JSC::JSPropertyNameIterator::markChildren):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::setCachedPrototypeChain):
        * runtime/MarkStack.h:
        (JSC::MarkStack::append):
        * runtime/Structure.h:
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::StructureChain):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):

2011-03-29  Matthew Delaney  <mdelaney@apple.com>

        Reviewed by Simon Fraser.

        Use the Accelerate vImage vectorized (un)premultiplyImageData functions for ImageBufferCG

        https://bugs.webkit.org/show_bug.cgi?id=53134

        * wtf/Platform.h: Added in WTF flag for using the Accelerate framework

2011-03-30  Steve Falkenburg  <sfalken@apple.com>

        Reviewed by Adam Roben.

        Share most vsprops between Release and Production builds in releaseproduction.vsprops
        https://bugs.webkit.org/show_bug.cgi?id=57508

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreProduction.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreRelease.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleaseCairoCFLite.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleasePGO.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleasePGOOptimize.vsprops:
        * JavaScriptCore.vcproj/WTF/WTFProduction.vsprops:
        * JavaScriptCore.vcproj/WTF/WTFRelease.vsprops:
        * JavaScriptCore.vcproj/WTF/WTFReleaseCairoCFLite.vsprops:
        * JavaScriptCore.vcproj/WTF/WTFReleasePGO.vsprops:
        * JavaScriptCore.vcproj/jsc/jscProduction.vsprops:
        * JavaScriptCore.vcproj/jsc/jscRelease.vsprops:
        * JavaScriptCore.vcproj/jsc/jscReleaseCairoCFLite.vsprops:
        * JavaScriptCore.vcproj/jsc/jscReleasePGO.vsprops:
        * JavaScriptCore.vcproj/testapi/testapiProduction.vsprops:
        * JavaScriptCore.vcproj/testapi/testapiRelease.vsprops:
        * JavaScriptCore.vcproj/testapi/testapiReleaseCairoCFLite.vsprops:

2011-03-30  Mark Rowe  <mrowe@apple.com>

        Reviewed by Adam Roben.

        Explicitly prevent testapi and minidom from being installed rather than relying
        on Xcode's current behavior of not installing if INSTALL_PATH is not explicitly
        set at the target level.

        <rdar://problem/9206357>

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-03-30  Timur Iskhodzhanov  <timurrrr@google.com>

        Reviewed by Alexey Proskuryakov.

        Add some dynamic annotations to JavaScriptCore/wtf
        https://bugs.webkit.org/show_bug.cgi?id=53747

        By using these annotations we can improve the precision of finding
        WebKit errors using dynamic analysis tools like ThreadSanitizer and Valgrind.
        These annotations don't affect the compiled binaries unless USE(DYNAMIC_ANNOTATIONS) is "1".

        These files don't add new functionality, so don't need extra tests.

        * GNUmakefile.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/DynamicAnnotations.cpp: Added.
        (WTFAnnotateBenignRaceSized):
        (WTFAnnotateHappensBefore):
        (WTFAnnotateHappensAfter):
        * wtf/DynamicAnnotations.h: Added.
        * wtf/ThreadSafeRefCounted.h:
        (WTF::ThreadSafeRefCountedBase::derefBase):
        * wtf/text/StringStatics.cpp:
        (WTF::StringImpl::empty):

2011-03-30  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make StructureChain GC allocated
        https://bugs.webkit.org/show_bug.cgi?id=56695

        Make StructureChain GC allocated, and make the various owners
        mark it correctly.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        (JSC::CodeBlock::derefStructures):
        (JSC::CodeBlock::refStructures):
        (JSC::CodeBlock::markAggregate):
        * bytecode/Instruction.h:
        (JSC::PolymorphicAccessStructureList::PolymorphicStubInfo::set):
        (JSC::PolymorphicAccessStructureList::PolymorphicAccessStructureList):
        (JSC::PolymorphicAccessStructureList::derefStructures):
        (JSC::PolymorphicAccessStructureList::markAggregate):
        (JSC::Instruction::Instruction):
        * bytecode/StructureStubInfo.cpp:
        (JSC::StructureStubInfo::deref):
        (JSC::StructureStubInfo::markAggregate):
        * bytecode/StructureStubInfo.h:
        (JSC::StructureStubInfo::initGetByIdChain):
        (JSC::StructureStubInfo::initPutByIdTransition):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionCall):
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionApply):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_jneq_ptr):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_jneq_ptr):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):
        * jit/JITStubs.cpp:
        (JSC::getPolymorphicAccessStructureListSlot):
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/JSCell.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::markIfNeeded):
        * runtime/JSGlobalObject.h:
        (JSC::Structure::prototypeChain):
        * runtime/JSObject.h:
        (JSC::JSObject::markChildrenDirect):
        * runtime/JSPropertyNameIterator.cpp:
        (JSC::JSPropertyNameIterator::create):
        (JSC::JSPropertyNameIterator::get):
        (JSC::JSPropertyNameIterator::markChildren):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::setCachedPrototypeChain):
        * runtime/MarkStack.h:
        (JSC::MarkStack::append):
        * runtime/Structure.h:
        (JSC::Structure::cachedPrototypeChainSlot):
        * runtime/StructureChain.cpp:
        (JSC::StructureChain::StructureChain):
        * runtime/StructureChain.h:
        (JSC::StructureChain::create):
        (JSC::StructureChain::createStructure):

2011-03-30  Steve Falkenburg  <sfalken@apple.com>

        Reviewed by Adam Roben.

        Update Windows production build logic for new production configurations
        https://bugs.webkit.org/show_bug.cgi?id=57494

        * JavaScriptCore.vcproj/JavaScriptCore.make:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreProduction.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleasePGO.vsprops:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleasePGOOptimize.vsprops:
        * JavaScriptCore.vcproj/WTF/WTFProduction.vsprops:
        * JavaScriptCore.vcproj/WTF/WTFReleasePGO.vsprops:
        * JavaScriptCore.vcproj/jsc/jscProduction.vsprops:
        * JavaScriptCore.vcproj/jsc/jscReleasePGO.vsprops:
        * JavaScriptCore.vcproj/testapi/testapiProduction.vsprops:

2011-03-30  Steve Falkenburg  <sfalken@apple.com>

        Reviewed by Adam Roben.

        Rename Windows configuration Release_LTCG to Production for clarity
        https://bugs.webkit.org/show_bug.cgi?id=57465

        * JavaScriptCore.vcproj/JavaScriptCore.sln:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.vcproj:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreProduction.vsprops: Copied from Source/JavaScriptCore/JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleaseLTCG.vsprops.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleaseLTCG.vsprops: Removed.
        * JavaScriptCore.vcproj/JavaScriptCoreSubmit.sln:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.vcproj/WTF/WTFProduction.vsprops: Copied from Source/JavaScriptCore/JavaScriptCore.vcproj/WTF/WTFReleaseLTCG.vsprops.
        * JavaScriptCore.vcproj/WTF/WTFReleaseLTCG.vsprops: Removed.
        * JavaScriptCore.vcproj/jsc/jsc.vcproj:
        * JavaScriptCore.vcproj/jsc/jscProduction.vsprops: Copied from Source/JavaScriptCore/JavaScriptCore.vcproj/jsc/jscReleaseLTCG.vsprops.
        * JavaScriptCore.vcproj/jsc/jscReleaseLTCG.vsprops: Removed.
        * JavaScriptCore.vcproj/testapi/testapi.vcproj:
        * JavaScriptCore.vcproj/testapi/testapiProduction.vsprops: Copied from Source/JavaScriptCore/JavaScriptCore.vcproj/testapi/testapiReleaseLTCG.vsprops.
        * JavaScriptCore.vcproj/testapi/testapiReleaseLTCG.vsprops: Removed.

2011-03-30  Zoltan Herczeg  <zherczeg@inf.u-szeged.hu>

        Reviewed by Maciej Stachowiak.

        Add the NEXT_OPCODE() macro to the DFG-JIT parser
        https://bugs.webkit.org/show_bug.cgi?id=57322

        In JavaScriptCore we use macros to jump to the next opcode
        (both in interpreter and JIT). This macro is added to the
        DFG-JIT parser as well.

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::parse):

2011-03-29  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        ~25% regression on v8-splay in the SunSpider harness
        https://bugs.webkit.org/show_bug.cgi?id=56128
        
        I'm not sure if this is the root cause of the regression Stephanie
        measured, but it seems to get us back to previous v8-splay times.
        
        SunSpider reports no change. v8-splay says 41% faster.

        * runtime/Heap.cpp:
        (JSC::Heap::reset): Make marking proportional to 1X the size of the heap,
        not .5X the size of the heap. When the heap is large, this makes a big
        difference. (Our old heap growth policy matched this. You can see by
        looking at resizeBlocks in revisions prior to r77699.)

2011-03-29  Steve Falkenburg  <sfalken@apple.com>

        Reviewed by Darin Adler.

        Use per-configuration vsprops in JavaScriptCore to avoid WebKitVSPropsRedirectionDir removal by MSVC IDE
        https://bugs.webkit.org/show_bug.cgi?id=57350
        
        Visual Studio's IDE was removing instances of $(WebKitVSPropsRedirectionDir) from
        InheritedPropertySheet rules in our vcproj files when the vcproj was edited from within
        the IDE. To avoid this, add a separate vsprops file for each project configuration that
        contains the required inherited property sheets.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreDebug.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreDebugAll.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreDebugCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreRelease.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleaseCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleaseLTCG.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleasePGO.vsprops: Added.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreReleasePGOOptimize.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.vcproj/WTF/WTFDebug.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTFDebugAll.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTFDebugCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTFRelease.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTFReleaseCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTFReleaseLTCG.vsprops: Added.
        * JavaScriptCore.vcproj/WTF/WTFReleasePGO.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jsc.vcproj:
        * JavaScriptCore.vcproj/jsc/jscDebug.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jscDebugAll.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jscDebugCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jscRelease.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jscReleaseCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jscReleaseLTCG.vsprops: Added.
        * JavaScriptCore.vcproj/jsc/jscReleasePGO.vsprops: Added.
        * JavaScriptCore.vcproj/testapi/testapi.vcproj:
        * JavaScriptCore.vcproj/testapi/testapiDebug.vsprops: Added.
        * JavaScriptCore.vcproj/testapi/testapiDebugAll.vsprops: Added.
        * JavaScriptCore.vcproj/testapi/testapiDebugCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/testapi/testapiRelease.vsprops: Added.
        * JavaScriptCore.vcproj/testapi/testapiReleaseCairoCFLite.vsprops: Added.
        * JavaScriptCore.vcproj/testapi/testapiReleaseLTCG.vsprops: Added.

2011-03-29  Oliver Hunt  <oliver@apple.com>

        Reviewed by Eric Seidel.

        REGRESSION(r82173): Causes assertion and test failures in run-javascriptcore-tests on Windows (Requested by aroben on #webkit).
        https://bugs.webkit.org/show_bug.cgi?id=57333

        constructDate now takes the global object explicitly as it may be called
        by functions other than the constructor itself.

        * API/JSObjectRef.cpp:
        (JSObjectMakeDate):
        * runtime/DateConstructor.cpp:
        (JSC::constructDate):
        (JSC::constructWithDateConstructor):
        * runtime/DateConstructor.h:

2011-03-29  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Benjamin Poulain.

        https://bugs.webkit.org/show_bug.cgi?id=41953

        Fix compile error on Solaris 10/Sun Studio 12 CC emanating from MathExtras.h

        * wtf/MathExtras.h:

2011-03-29  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=57231
        Add conditional for SUNCC supporting alignment macros

        Compile fix for Solaris 10/Sun Studio 12 CC

        * wtf/Vector.h:

2011-03-29  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=57256

        Fix crash on misaligned reads on Solaris 10/Sparc

        * wtf/text/AtomicString.cpp:
        (WTF::equal):

2011-03-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        instanceof Array test fails when using iframes
        https://bugs.webkit.org/show_bug.cgi?id=17250

        This is a problem with all built in constructors, the use of
        lexicalGlobalObject rather than the constructors own 
        global object reference means that a builtin will always use
        the prototype from the lexical global object rather than that
        of the constructors origin.

        * API/JSObjectRef.cpp:
        (JSObjectMakeFunction):
        (JSObjectMakeRegExp):
        * JavaScriptCore.exp:
        * runtime/ArrayConstructor.cpp:
        (JSC::constructArrayWithSizeQuirk):
        * runtime/BooleanConstructor.cpp:
        (JSC::constructBoolean):
        (JSC::constructBooleanFromImmediateBoolean):
        * runtime/BooleanConstructor.h:
        * runtime/DateConstructor.cpp:
        (JSC::constructDate):
        * runtime/DateInstance.cpp:
        * runtime/DateInstance.h:
        * runtime/ErrorConstructor.cpp:
        (JSC::constructWithErrorConstructor):
        (JSC::callErrorConstructor):
        * runtime/FunctionConstructor.cpp:
        (JSC::constructWithFunctionConstructor):
        (JSC::callFunctionConstructor):
        (JSC::constructFunction):
        * runtime/FunctionConstructor.h:
        * runtime/JSCell.cpp:
        (JSC::JSCell::getOwnPropertySlot):
        (JSC::JSCell::put):
        (JSC::JSCell::deleteProperty):
        (JSC::JSCell::toThisObject):
        (JSC::JSCell::toObject):
        * runtime/JSCell.h:
        (JSC::JSCell::JSValue::toObject):
        * runtime/JSNotAnObject.cpp:
        (JSC::JSNotAnObject::toObject):
        * runtime/JSNotAnObject.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::toObject):
        * runtime/JSObject.h:
        * runtime/JSString.cpp:
        (JSC::StringObject::create):
        (JSC::JSString::toObject):
        (JSC::JSString::toThisObject):
        * runtime/JSString.h:
        * runtime/JSValue.cpp:
        (JSC::JSValue::toObjectSlowCase):
        (JSC::JSValue::toThisObjectSlowCase):
        (JSC::JSValue::synthesizeObject):
        * runtime/JSValue.h:
        * runtime/NumberConstructor.cpp:
        (JSC::constructWithNumberConstructor):
        * runtime/NumberObject.cpp:
        (JSC::constructNumber):
        * runtime/NumberObject.h:
        * runtime/ObjectConstructor.cpp:
        (JSC::constructObject):
        (JSC::constructWithObjectConstructor):
        (JSC::callObjectConstructor):
        * runtime/RegExpConstructor.cpp:
        (JSC::constructRegExp):
        (JSC::constructWithRegExpConstructor):
        (JSC::callRegExpConstructor):
        * runtime/RegExpConstructor.h:
        * runtime/StringConstructor.cpp:
        (JSC::constructWithStringConstructor):
        * runtime/StringObject.h:

2011-03-28  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        REGRESSION [r78794-r79249] Allocation of memory is slow when number of active objects is large
        https://bugs.webkit.org/show_bug.cgi?id=56823
        
        Partial fix for most of the problem. (TOT still shows a regression, though.)

        * runtime/Heap.cpp:
        (JSC::Heap::reportExtraMemoryCostSlowCase): Use highWaterMark(), instead of
        capacity(), since capacity() is O(n) relative to the size of the heap.

        In limited circumstances, capacity() is also worse than highWaterMark()
        for measuring extra cost relative to heap size, since capacity() only
        measures the *current* capacity of the heap, but the heap will grow if
        necessary to attain highWaterMark().

2011-03-28  Oliver Hunt  <oliver@apple.com>

        REGRESSION(r82130): It made all tests crash (Requested by Ossy on #webkit).
        https://bugs.webkit.org/show_bug.cgi?id=57251

        Build fix, had remnant of another patch in r82130

        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompileGetByIdChainList):

2011-03-27  Oliver Hunt  <oliver@apple.com>

        Reviewed by Maciej Stachowiak.

        Add additional immediate types to allow us to distinguish the source of a JIT immediate
        https://bugs.webkit.org/show_bug.cgi?id=57190

        Allow us to distinguish whether a JIT immediate is a value that we
        control (TrustedImm32 and TrustedImmPtr) vs. ones that can be controlled
        or influenced by code we are compiling.  Currently we do nothing with this
        information -- this change is large and mechanical but would obscure any
        logic changes that we would have made.

        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::TrustedImmPtr::TrustedImmPtr):
        (JSC::AbstractMacroAssembler::ImmPtr::ImmPtr):
        (JSC::AbstractMacroAssembler::TrustedImm32::TrustedImm32):
        (JSC::AbstractMacroAssembler::Imm32::Imm32):
        * assembler/MacroAssembler.h:
        (JSC::MacroAssembler::pop):
        (JSC::MacroAssembler::poke):
        (JSC::MacroAssembler::branchPtr):
        (JSC::MacroAssembler::branch32):
        (JSC::MacroAssembler::addPtr):
        (JSC::MacroAssembler::andPtr):
        (JSC::MacroAssembler::orPtr):
        (JSC::MacroAssembler::subPtr):
        (JSC::MacroAssembler::xorPtr):
        (JSC::MacroAssembler::setPtr):
        (JSC::MacroAssembler::storePtr):
        (JSC::MacroAssembler::branchTestPtr):
        (JSC::MacroAssembler::branchSubPtr):
        (JSC::MacroAssembler::branchTest8):
        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::add32):
        (JSC::MacroAssemblerARM::and32):
        (JSC::MacroAssemblerARM::lshift32):
        (JSC::MacroAssemblerARM::mul32):
        (JSC::MacroAssemblerARM::or32):
        (JSC::MacroAssemblerARM::rshift32):
        (JSC::MacroAssemblerARM::urshift32):
        (JSC::MacroAssemblerARM::sub32):
        (JSC::MacroAssemblerARM::xor32):
        (JSC::MacroAssemblerARM::store32):
        (JSC::MacroAssemblerARM::push):
        (JSC::MacroAssemblerARM::move):
        (JSC::MacroAssemblerARM::branch8):
        (JSC::MacroAssemblerARM::branch32):
        (JSC::MacroAssemblerARM::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerARM::branch16):
        (JSC::MacroAssemblerARM::branchTest8):
        (JSC::MacroAssemblerARM::branchTest32):
        (JSC::MacroAssemblerARM::branchAdd32):
        (JSC::MacroAssemblerARM::branchMul32):
        (JSC::MacroAssemblerARM::branchSub32):
        (JSC::MacroAssemblerARM::set32Compare32):
        (JSC::MacroAssemblerARM::set8Compare32):
        (JSC::MacroAssemblerARM::set32Test32):
        (JSC::MacroAssemblerARM::set32Test8):
        (JSC::MacroAssemblerARM::moveWithPatch):
        (JSC::MacroAssemblerARM::branchPtrWithPatch):
        (JSC::MacroAssemblerARM::storePtrWithPatch):
        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::add32):
        (JSC::MacroAssemblerARMv7::and32):
        (JSC::MacroAssemblerARMv7::lshift32):
        (JSC::MacroAssemblerARMv7::mul32):
        (JSC::MacroAssemblerARMv7::or32):
        (JSC::MacroAssemblerARMv7::rshift32):
        (JSC::MacroAssemblerARMv7::urshift32):
        (JSC::MacroAssemblerARMv7::sub32):
        (JSC::MacroAssemblerARMv7::xor32):
        (JSC::MacroAssemblerARMv7::load32):
        (JSC::MacroAssemblerARMv7::load32WithAddressOffsetPatch):
        (JSC::MacroAssemblerARMv7::load16):
        (JSC::MacroAssemblerARMv7::store32WithAddressOffsetPatch):
        (JSC::MacroAssemblerARMv7::store32):
        (JSC::MacroAssemblerARMv7::loadDouble):
        (JSC::MacroAssemblerARMv7::storeDouble):
        (JSC::MacroAssemblerARMv7::push):
        (JSC::MacroAssemblerARMv7::move):
        (JSC::MacroAssemblerARMv7::compare32):
        (JSC::MacroAssemblerARMv7::test32):
        (JSC::MacroAssemblerARMv7::branch32):
        (JSC::MacroAssemblerARMv7::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerARMv7::branch16):
        (JSC::MacroAssemblerARMv7::branch8):
        (JSC::MacroAssemblerARMv7::branchTest32):
        (JSC::MacroAssemblerARMv7::branchTest8):
        (JSC::MacroAssemblerARMv7::branchAdd32):
        (JSC::MacroAssemblerARMv7::branchMul32):
        (JSC::MacroAssemblerARMv7::branchSub32):
        (JSC::MacroAssemblerARMv7::nearCall):
        (JSC::MacroAssemblerARMv7::call):
        (JSC::MacroAssemblerARMv7::set32Compare32):
        (JSC::MacroAssemblerARMv7::set8Compare32):
        (JSC::MacroAssemblerARMv7::set32Test32):
        (JSC::MacroAssemblerARMv7::set32Test8):
        (JSC::MacroAssemblerARMv7::moveWithPatch):
        (JSC::MacroAssemblerARMv7::branchPtrWithPatch):
        (JSC::MacroAssemblerARMv7::storePtrWithPatch):
        (JSC::MacroAssemblerARMv7::tailRecursiveCall):
        (JSC::MacroAssemblerARMv7::makeJump):
        (JSC::MacroAssemblerARMv7::makeBranch):
        (JSC::MacroAssemblerARMv7::setupArmAddress):
        (JSC::MacroAssemblerARMv7::makeBaseIndexBase):
        (JSC::MacroAssemblerARMv7::moveFixedWidthEncoding):
        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::add32):
        (JSC::MacroAssemblerMIPS::and32):
        (JSC::MacroAssemblerMIPS::lshift32):
        (JSC::MacroAssemblerMIPS::mul32):
        (JSC::MacroAssemblerMIPS::or32):
        (JSC::MacroAssemblerMIPS::rshift32):
        (JSC::MacroAssemblerMIPS::urshift32):
        (JSC::MacroAssemblerMIPS::sub32):
        (JSC::MacroAssemblerMIPS::xor32):
        (JSC::MacroAssemblerMIPS::load32):
        (JSC::MacroAssemblerMIPS::load32WithAddressOffsetPatch):
        (JSC::MacroAssemblerMIPS::store32WithAddressOffsetPatch):
        (JSC::MacroAssemblerMIPS::store32):
        (JSC::MacroAssemblerMIPS::push):
        (JSC::MacroAssemblerMIPS::move):
        (JSC::MacroAssemblerMIPS::branch8):
        (JSC::MacroAssemblerMIPS::branch32):
        (JSC::MacroAssemblerMIPS::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerMIPS::branch16):
        (JSC::MacroAssemblerMIPS::branchTest32):
        (JSC::MacroAssemblerMIPS::branchTest8):
        (JSC::MacroAssemblerMIPS::branchAdd32):
        (JSC::MacroAssemblerMIPS::branchMul32):
        (JSC::MacroAssemblerMIPS::branchSub32):
        (JSC::MacroAssemblerMIPS::set8Compare32):
        (JSC::MacroAssemblerMIPS::set32Compare32):
        (JSC::MacroAssemblerMIPS::set32Test8):
        (JSC::MacroAssemblerMIPS::set32Test32):
        (JSC::MacroAssemblerMIPS::moveWithPatch):
        (JSC::MacroAssemblerMIPS::branchPtrWithPatch):
        (JSC::MacroAssemblerMIPS::storePtrWithPatch):
        (JSC::MacroAssemblerMIPS::tailRecursiveCall):
        (JSC::MacroAssemblerMIPS::loadDouble):
        (JSC::MacroAssemblerMIPS::storeDouble):
        (JSC::MacroAssemblerMIPS::branchTruncateDoubleToInt32):
        * assembler/MacroAssemblerX86.h:
        (JSC::MacroAssemblerX86::add32):
        (JSC::MacroAssemblerX86::addWithCarry32):
        (JSC::MacroAssemblerX86::and32):
        (JSC::MacroAssemblerX86::or32):
        (JSC::MacroAssemblerX86::sub32):
        (JSC::MacroAssemblerX86::store32):
        (JSC::MacroAssemblerX86::branch32):
        (JSC::MacroAssemblerX86::moveWithPatch):
        (JSC::MacroAssemblerX86::branchPtrWithPatch):
        (JSC::MacroAssemblerX86::storePtrWithPatch):
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::add32):
        (JSC::MacroAssemblerX86Common::and32):
        (JSC::MacroAssemblerX86Common::lshift32):
        (JSC::MacroAssemblerX86Common::mul32):
        (JSC::MacroAssemblerX86Common::or32):
        (JSC::MacroAssemblerX86Common::rshift32):
        (JSC::MacroAssemblerX86Common::urshift32):
        (JSC::MacroAssemblerX86Common::sub32):
        (JSC::MacroAssemblerX86Common::xor32):
        (JSC::MacroAssemblerX86Common::store32):
        (JSC::MacroAssemblerX86Common::branchTruncateDoubleToInt32):
        (JSC::MacroAssemblerX86Common::push):
        (JSC::MacroAssemblerX86Common::move):
        (JSC::MacroAssemblerX86Common::branch8):
        (JSC::MacroAssemblerX86Common::branch32):
        (JSC::MacroAssemblerX86Common::branch32WithUnalignedHalfWords):
        (JSC::MacroAssemblerX86Common::branch16):
        (JSC::MacroAssemblerX86Common::branchTest32):
        (JSC::MacroAssemblerX86Common::branchTest8):
        (JSC::MacroAssemblerX86Common::branchAdd32):
        (JSC::MacroAssemblerX86Common::branchMul32):
        (JSC::MacroAssemblerX86Common::branchSub32):
        (JSC::MacroAssemblerX86Common::set8Compare32):
        (JSC::MacroAssemblerX86Common::set32Compare32):
        (JSC::MacroAssemblerX86Common::set32Test8):
        (JSC::MacroAssemblerX86Common::set32Test32):
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::add32):
        (JSC::MacroAssemblerX86_64::and32):
        (JSC::MacroAssemblerX86_64::or32):
        (JSC::MacroAssemblerX86_64::sub32):
        (JSC::MacroAssemblerX86_64::loadDouble):
        (JSC::MacroAssemblerX86_64::addDouble):
        (JSC::MacroAssemblerX86_64::convertInt32ToDouble):
        (JSC::MacroAssemblerX86_64::store32):
        (JSC::MacroAssemblerX86_64::call):
        (JSC::MacroAssemblerX86_64::tailRecursiveCall):
        (JSC::MacroAssemblerX86_64::makeTailRecursiveCall):
        (JSC::MacroAssemblerX86_64::addPtr):
        (JSC::MacroAssemblerX86_64::andPtr):
        (JSC::MacroAssemblerX86_64::orPtr):
        (JSC::MacroAssemblerX86_64::subPtr):
        (JSC::MacroAssemblerX86_64::xorPtr):
        (JSC::MacroAssemblerX86_64::storePtr):
        (JSC::MacroAssemblerX86_64::setPtr):
        (JSC::MacroAssemblerX86_64::branchPtr):
        (JSC::MacroAssemblerX86_64::branchTestPtr):
        (JSC::MacroAssemblerX86_64::branchSubPtr):
        (JSC::MacroAssemblerX86_64::moveWithPatch):
        (JSC::MacroAssemblerX86_64::branchPtrWithPatch):
        (JSC::MacroAssemblerX86_64::storePtrWithPatch):
        (JSC::MacroAssemblerX86_64::branchTest8):
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::callOperation):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::jitAssertIsInt32):
        (JSC::DFG::JITCompiler::emitCount):
        * dfg/DFGJITCompiler.h:
        (JSC::DFG::JITCompiler::emitPutImmediateToCallFrameHeader):
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::fillSpeculateCell):
        (JSC::DFG::SpeculativeJIT::compile):
        * jit/JIT.cpp:
        (JSC::JIT::emitTimeoutCheck):
        (JSC::JIT::privateCompile):
        * jit/JIT.h:
        * jit/JITArithmetic.cpp:
        (JSC::JIT::emit_op_urshift):
        (JSC::JIT::emitSlow_op_urshift):
        (JSC::JIT::emit_op_post_inc):
        (JSC::JIT::emit_op_post_dec):
        (JSC::JIT::emit_op_pre_inc):
        (JSC::JIT::emit_op_pre_dec):
        (JSC::JIT::emit_op_mod):
        * jit/JITArithmetic32_64.cpp:
        (JSC::JIT::emit_op_negate):
        (JSC::JIT::emit_op_jnless):
        (JSC::JIT::emit_op_jless):
        (JSC::JIT::emit_op_jlesseq):
        (JSC::JIT::emit_op_lshift):
        (JSC::JIT::emitRightShift):
        (JSC::JIT::emitRightShiftSlowCase):
        (JSC::JIT::emit_op_bitand):
        (JSC::JIT::emit_op_bitor):
        (JSC::JIT::emit_op_bitxor):
        (JSC::JIT::emit_op_bitnot):
        (JSC::JIT::emit_op_post_inc):
        (JSC::JIT::emit_op_post_dec):
        (JSC::JIT::emitSlow_op_post_dec):
        (JSC::JIT::emit_op_pre_inc):
        (JSC::JIT::emit_op_pre_dec):
        (JSC::JIT::emit_op_add):
        (JSC::JIT::emitAdd32Constant):
        (JSC::JIT::emit_op_sub):
        (JSC::JIT::emitSub32Constant):
        (JSC::JIT::emitBinaryDoubleOp):
        (JSC::JIT::emit_op_mul):
        (JSC::JIT::emitSlow_op_mul):
        (JSC::JIT::emit_op_div):
        (JSC::JIT::emit_op_mod):
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        (JSC::JIT::compileOpCallSlowCase):
        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::emit_op_ret_object_or_this):
        (JSC::JIT::compileOpCall):
        (JSC::JIT::compileOpCallSlowCase):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitPutCellToCallFrameHeader):
        (JSC::JIT::emitPutIntToCallFrameHeader):
        (JSC::JIT::emitPutImmediateToCallFrameHeader):
        (JSC::JIT::emitLoadCharacterString):
        (JSC::JIT::restoreArgumentReferenceForTrampoline):
        (JSC::JIT::checkStructure):
        (JSC::JIT::setSamplingFlag):
        (JSC::JIT::clearSamplingFlag):
        (JSC::JIT::emitCount):
        (JSC::JIT::sampleInstruction):
        (JSC::JIT::sampleCodeBlock):
        (JSC::JIT::emitStoreInt32):
        (JSC::JIT::emitStoreCell):
        (JSC::JIT::emitStoreBool):
        (JSC::JIT::emitJumpSlowCaseIfNotJSCell):
        (JSC::JIT::emitInitRegister):
        (JSC::JIT::emitJumpIfJSCell):
        (JSC::JIT::emitJumpIfNotJSCell):
        (JSC::JIT::emitJumpIfImmediateInteger):
        (JSC::JIT::emitJumpIfNotImmediateInteger):
        (JSC::JIT::emitFastArithDeTagImmediate):
        (JSC::JIT::emitFastArithDeTagImmediateJumpIfZero):
        (JSC::JIT::emitFastArithReTagImmediate):
        (JSC::JIT::emitTagAsBoolImmediate):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_check_has_instance):
        (JSC::JIT::emit_op_instanceof):
        (JSC::JIT::emit_op_ret_object_or_this):
        (JSC::JIT::emit_op_resolve):
        (JSC::JIT::emit_op_to_primitive):
        (JSC::JIT::emit_op_resolve_base):
        (JSC::JIT::emit_op_ensure_property_exists):
        (JSC::JIT::emit_op_resolve_skip):
        (JSC::JIT::emit_op_resolve_global):
        (JSC::JIT::emitSlow_op_resolve_global):
        (JSC::JIT::emit_op_not):
        (JSC::JIT::emit_op_jfalse):
        (JSC::JIT::emit_op_jeq_null):
        (JSC::JIT::emit_op_jneq_null):
        (JSC::JIT::emit_op_jneq_ptr):
        (JSC::JIT::emit_op_jsr):
        (JSC::JIT::emit_op_resolve_with_base):
        (JSC::JIT::emit_op_new_func_exp):
        (JSC::JIT::emit_op_jtrue):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        (JSC::JIT::emit_op_to_jsnumber):
        (JSC::JIT::emit_op_push_new_scope):
        (JSC::JIT::emit_op_catch):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):
        (JSC::JIT::emit_op_init_lazy_reg):
        (JSC::JIT::emit_op_convert_this):
        (JSC::JIT::emit_op_convert_this_strict):
        (JSC::JIT::emitSlow_op_not):
        (JSC::JIT::emitSlow_op_neq):
        (JSC::JIT::emit_op_get_arguments_length):
        (JSC::JIT::emitSlow_op_get_arguments_length):
        (JSC::JIT::emit_op_get_argument_by_val):
        (JSC::JIT::emitSlow_op_resolve_global_dynamic):
        (JSC::JIT::emit_op_new_regexp):
        (JSC::JIT::emit_op_load_varargs):
        (JSC::JIT::emitSlow_op_load_varargs):
        (JSC::JIT::emit_op_new_func):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_loop_if_lesseq):
        (JSC::JIT::emit_op_check_has_instance):
        (JSC::JIT::emit_op_instanceof):
        (JSC::JIT::emit_op_get_scoped_var):
        (JSC::JIT::emit_op_put_scoped_var):
        (JSC::JIT::emit_op_tear_off_activation):
        (JSC::JIT::emit_op_tear_off_arguments):
        (JSC::JIT::emit_op_resolve):
        (JSC::JIT::emit_op_to_primitive):
        (JSC::JIT::emit_op_resolve_base):
        (JSC::JIT::emit_op_ensure_property_exists):
        (JSC::JIT::emit_op_resolve_skip):
        (JSC::JIT::emit_op_resolve_global):
        (JSC::JIT::emitSlow_op_resolve_global):
        (JSC::JIT::emit_op_not):
        (JSC::JIT::emit_op_jfalse):
        (JSC::JIT::emit_op_jtrue):
        (JSC::JIT::emit_op_jeq_null):
        (JSC::JIT::emit_op_jneq_null):
        (JSC::JIT::emit_op_jneq_ptr):
        (JSC::JIT::emit_op_jsr):
        (JSC::JIT::emit_op_eq):
        (JSC::JIT::emitSlow_op_eq):
        (JSC::JIT::emit_op_neq):
        (JSC::JIT::emitSlow_op_neq):
        (JSC::JIT::compileOpStrictEq):
        (JSC::JIT::emit_op_eq_null):
        (JSC::JIT::emit_op_neq_null):
        (JSC::JIT::emit_op_resolve_with_base):
        (JSC::JIT::emit_op_new_func_exp):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        (JSC::JIT::emit_op_to_jsnumber):
        (JSC::JIT::emit_op_push_new_scope):
        (JSC::JIT::emit_op_catch):
        (JSC::JIT::emit_op_create_activation):
        (JSC::JIT::emit_op_create_arguments):
        (JSC::JIT::emit_op_convert_this):
        (JSC::JIT::emit_op_convert_this_strict):
        (JSC::JIT::emit_op_get_arguments_length):
        (JSC::JIT::emitSlow_op_get_arguments_length):
        (JSC::JIT::emit_op_get_argument_by_val):
        (JSC::JIT::softModulo):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::emit_op_get_by_val):
        (JSC::JIT::emitSlow_op_get_by_val):
        (JSC::JIT::emit_op_get_by_pname):
        (JSC::JIT::emit_op_put_by_val):
        (JSC::JIT::emit_op_put_by_index):
        (JSC::JIT::emit_op_put_getter):
        (JSC::JIT::emit_op_put_setter):
        (JSC::JIT::emit_op_del_by_id):
        (JSC::JIT::emit_op_get_by_id):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::compileGetByIdSlowCase):
        (JSC::JIT::emitSlow_op_put_by_id):
        (JSC::JIT::testPrototype):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_put_getter):
        (JSC::JIT::emit_op_put_setter):
        (JSC::JIT::emit_op_del_by_id):
        (JSC::JIT::emit_op_get_by_id):
        (JSC::JIT::emit_op_put_by_id):
        (JSC::JIT::emit_op_method_check):
        (JSC::JIT::stringGetByValStubGenerator):
        (JSC::JIT::emit_op_get_by_val):
        (JSC::JIT::emitSlow_op_get_by_val):
        (JSC::JIT::emit_op_put_by_val):
        (JSC::JIT::compileGetByIdHotPath):
        (JSC::JIT::compileGetByIdSlowCase):
        (JSC::JIT::emitSlow_op_put_by_id):
        (JSC::JIT::testPrototype):
        (JSC::JIT::privateCompilePutByIdTransition):
        (JSC::JIT::privateCompilePatchGetArrayLength):
        (JSC::JIT::privateCompileGetByIdProto):
        (JSC::JIT::privateCompileGetByIdSelfList):
        (JSC::JIT::privateCompileGetByIdProtoList):
        (JSC::JIT::privateCompileGetByIdChainList):
        (JSC::JIT::privateCompileGetByIdChain):
        (JSC::JIT::emit_op_get_by_pname):
        * jit/JITStubCall.h:
        (JSC::JITStubCall::addArgument):
        * jit/JITStubs.cpp:
        (JSC::getPolymorphicAccessStructureListSlot):
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::emitJumpIfNotJSCell):
        (JSC::JSInterfaceJIT::emitLoadInt32):
        (JSC::JSInterfaceJIT::emitLoadDouble):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::SpecializedThunkJIT):
        (JSC::SpecializedThunkJIT::loadJSStringArgument):
        (JSC::SpecializedThunkJIT::tagReturnAsInt32):
        (JSC::SpecializedThunkJIT::tagReturnAsJSCell):
        * jit/ThunkGenerators.cpp:
        (JSC::charToString):
        (JSC::powThunkGenerator):
        * yarr/YarrJIT.cpp:
        (JSC::Yarr::YarrGenerator::matchCharacterClass):
        (JSC::Yarr::YarrGenerator::storeToFrame):
        (JSC::Yarr::YarrGenerator::storeToFrameWithPatch):
        (JSC::Yarr::YarrGenerator::ParenthesesTail::generateCode):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterSingle):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterFixed):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterGreedy):
        (JSC::Yarr::YarrGenerator::generatePatternCharacterNonGreedy):
        (JSC::Yarr::YarrGenerator::generateCharacterClassFixed):
        (JSC::Yarr::YarrGenerator::generateCharacterClassGreedy):
        (JSC::Yarr::YarrGenerator::generateCharacterClassNonGreedy):
        (JSC::Yarr::YarrGenerator::generateParenthesesSingle):
        (JSC::Yarr::YarrGenerator::generateDisjunction):

2011-03-28  Andras Becsi  <abecsi@webkit.org>

        Reviewed by Csaba Osztrogonác.

        [Qt] Fix the linking of jsc with MinGW after r81963.

        * jsc.pro: add -l and remove the lib suffix.

2011-03-27  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Alexey Proskuryakov.

        https://bugs.webkit.org/show_bug.cgi?id=57170  Fix last elements
        in an enum to remove a trailing comma. Sun Studio 12 CC errors out.

        Compile fix only, no actual code change.

        * wtf/MessageQueue.h:

2011-03-25  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        Allow defineOwnProperty to work on DOMObjects
        https://bugs.webkit.org/show_bug.cgi?id=57129

        Fix a couple of places where we uses getter()/setter() rather
        than [gs]etterPresent().

        * runtime/JSObject.cpp:
        (JSC::JSObject::defineOwnProperty):

2011-03-25  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Crash when paused at a breakpoint caused by inaccurate Activation records.
        https://bugs.webkit.org/show_bug.cgi?id=57120

        * runtime/JSActivation.cpp:
        (JSC::JSActivation::symbolTableGet):
        (JSC::JSActivation::symbolTablePut):
        (JSC::JSActivation::getOwnPropertyNames):
        (JSC::JSActivation::symbolTablePutWithAttributes):

2011-03-24  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Crash in debugger beneath MarkStack::drain @ me.com, ibm.com
        https://bugs.webkit.org/show_bug.cgi?id=57080
        <rdar://problem/8525907>

        The crash was caused by changes in the executable after recompilation.

        The fix is for the activation to copy the data it needs instead of
        relying on the data in the executable.
        
        SunSpider and v8 report no change.

        * runtime/Arguments.h:
        (JSC::JSActivation::copyRegisters): Use our own data members instead of
        reading data out of the executable.

        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation): Initialize our data members.

        (JSC::JSActivation::markChildren):
        (JSC::JSActivation::symbolTableGet):
        (JSC::JSActivation::symbolTablePut):
        (JSC::JSActivation::getOwnPropertyNames):
        (JSC::JSActivation::symbolTablePutWithAttributes):
        (JSC::JSActivation::isDynamicScope):
        (JSC::JSActivation::argumentsGetter): Use our own data members instead of
        reading data out of the executable.

        * runtime/JSActivation.h: Added new data members to track data previously
        tracked by the executable. Since I've removed the executable pointer,
        on a 64bit system, I've only made activations bigger by an int.

2011-03-25  David Kilzer  <ddkilzer@apple.com>

        Remove duplicate entry from JavaScriptCore.exp

        JSC::createStackOverflowError(JSC::ExecState*) was originally
        exported in r60057, then duplicated in r60392.

        * JavaScriptCore.exp: Removed duplicate entry.

2011-03-25  Jarred Nicholls  <jarred@sencha.com>

        Reviewed by Ariya Hidayat.

        [Qt] MSVC Build Error - need to link advapi32.lib for jsc.exe
        https://bugs.webkit.org/show_bug.cgi?id=56098

        Need to link advapi32.lib for jsc.exe since wtf/OSRandomSource.cpp uses the Win32 Crypto API

        * jsc.pro:

2011-03-24  Nikolas Zimmermann  <nzimmermann@rim.com>

        Reviewed by Darin Adler.

        Introduce WTF HexNumber.h
        https://bugs.webkit.org/show_bug.cgi?id=56099

        Introduce a set of functions that ease converting from a bye or a number to a hex string,
        replacing several of these conversions and String::format("%x") usages all over WebCore.

        * GNUmakefile.am: Add HexNumber.h to build.
        * JavaScriptCore.exp: Export StringBuilder::reserveCapacity.
        * JavaScriptCore.gypi: Add HexNumber.h to build.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Export StringBuilder::reserveCapacity.
        * JavaScriptCore.vcproj/WTF/WTF.vcproj: Add HexNumber.h to build.
        * JavaScriptCore.xcodeproj/project.pbxproj: Ditto.
        * wtf/CMakeLists.txt: Ditto.
        * wtf/HexNumber.h: Added.
        (WTF::Internal::hexDigitsForMode): Internal helper.
        (WTF::appendByteAsHex): Free function, that appends a byte as hex string into a destination.
        (WTF::placeByteAsHex): Ditto, but places the result using *foo++ = '..' or foo[index++] = '..'
        (WTF::appendUnsignedAsHex): Free function, that appends a number as hex string into a destination.

2011-03-24  Geoffrey Garen  <ggaren@apple.com>

        Windows build fix take 2: Add new symobl.
        
        (I should have used the EWS bots for this!)

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-03-24  Geoffrey Garen  <ggaren@apple.com>

        Windows build fix take 1: Removed old symobl.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-03-24  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Ensure that all compilation takes place within a dynamic global object scope
        https://bugs.webkit.org/show_bug.cgi?id=57054
        <rdar://problem/9083011>        

        Otherwise, entry to the global object scope might throw away the code
        we just compiled, causing a crash.

        * JavaScriptCore.exp: Updated for signature change.

        * debugger/Debugger.cpp:
        (JSC::evaluateInGlobalCallFrame):
        * debugger/DebuggerCallFrame.cpp:
        (JSC::DebuggerCallFrame::evaluate): Removed explicit compilation calls
        here because (a) they took place outside a dynamic global object scope
        and (b) they were redundant.

        * interpreter/CachedCall.h:
        (JSC::CachedCall::CachedCall): Updated for signature change.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::execute):
        (JSC::Interpreter::executeCall):
        (JSC::Interpreter::executeConstruct): Declare our dynamic global object
        scope earlier, to ensure that compilation takes place within it.

        * runtime/Completion.cpp:
        (JSC::evaluate): Removed explicit compilation calls here because (a)
        they took place outside a dynamic global object scope and (b) they were
        redundant.

        * runtime/Executable.h:
        (JSC::EvalExecutable::compile):
        (JSC::ProgramExecutable::compile):
        (JSC::FunctionExecutable::compileForCall):
        (JSC::FunctionExecutable::compileForConstruct): Added an ASSERT to
        verify our new invariant that all compilation takes place within a
        dynamic global object scope.

        * runtime/JSGlobalObject.cpp:
        (JSC::DynamicGlobalObjectScope::DynamicGlobalObjectScope):
        * runtime/JSGlobalObject.h: Changed the signature of DynamicGlobalObjectScope
        to require a JSGlobalData instead of an ExecState* since it is often
        easier to provide the former, and the latter was not necessary.

2011-03-24  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        REGRESSION (r79987-r80210): Crash in JSWeakObjectMapClear
        https://bugs.webkit.org/show_bug.cgi?id=55671

        This is no longer necessary, and it seems that with the new weakmap
        model it's simply unsafe, so this reduces it to a no-op. 

        * API/JSWeakObjectMapRefPrivate.cpp:

2011-03-24  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=20302
        Correct implementation of signbit on Solaris

        * wtf/MathExtras.h:
        (signbit):

2011-03-23  Mark Rowe  <mrowe@apple.com>

        Reviewed by Darin Adler.

        <rdar://problem/7959320> Threads that use APIs above the BSD layer must be registered with the Obj-C GC.

        * wtf/ThreadingPthreads.cpp:
        (WTF::initializeCurrentThreadInternal):

2011-03-23  Mark Rowe  <mrowe@apple.com>

        Stop setting OTHER_OPTIONS in JavaScriptCore's Makefile.

        It's not necessary to pass "-target All" as xcodebuild always builds the
        first target in the project unless otherwise specified. The presence of
        that option also breaks "make clean" since that results in both the
        -target and -alltargets options being passed to xcodebuild.

        * Makefile:

2011-03-23  Pavel Feldman  <pfeldman@chromium.org>

        Not reviewed: bring back Vector::contains that was removed as a part of roll back.

        * wtf/Vector.h:
        (WTF::::contains):

2011-03-23  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r81686.
        http://trac.webkit.org/changeset/81686
        https://bugs.webkit.org/show_bug.cgi?id=56914

        Breaks webkit_tests in Chromium again. (Requested by pfeldman
        on #webkit).

        * wtf/Vector.h:

2011-03-23  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        JavaScriptCore GYP build should work on a case-sensitive file system
        https://bugs.webkit.org/show_bug.cgi?id=56911

        The issue is that there are two UString.h headers, one named UString.h
        and one named ustring.h.  This patch excludes ustring.h from the header
        map to avoid confusion.  While I was editing this part of the GYP file,
        I cleaned up the exclude rules to be more modern.

        * gyp/JavaScriptCore.gyp:

2011-03-22  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Maciej Stachowiak.

        REGRESSION (r78382): No scripts appear in the Web Inspector's Scripts
        panel on Windows, and many inspector regression tests are failing
        https://bugs.webkit.org/show_bug.cgi?id=54490
        
        The bug was caused by two different classes using the same name (Recompiler).

        * debugger/Debugger.cpp:
        * runtime/JSGlobalData.cpp:
        (WTF::Recompiler::operator()): Put Recompiler in an anonymous namespace,
        so our two recompilers' inline functions don't stomp each other at
        link time.

2011-03-22  Sam Weinig  <sam@webkit.org>

        Reviewed by Mark Rowe.

        Remove USE_WK_SCROLLBAR_PAINTER_AND_CONTROLLER.
        <rdar://problem/8944718> 

        * DerivedSources.make:
        Remove generation of USE_WK_SCROLLBAR_PAINTER_AND_CONTROLLER.

2011-03-22  Gabor Loki  <loki@webkit.org>

        Reviewed by Csaba Osztrogonác.

        [Qt] Add DFG module to build system (disabled by default).
        https://bugs.webkit.org/show_bug.cgi?id=56845

        * JavaScriptCore.pri:
        * JavaScriptCore.pro:

2011-03-22  Eric Seidel  <eric@webkit.org>

        Reviewed by Adam Barth.

        Add support to build-webkit for building with gyp-generated project files
        https://bugs.webkit.org/show_bug.cgi?id=56877

        Found a couple missing Private headers while trying to make WebCore build.

        * JavaScriptCore.gypi:

2011-03-22  Eric Seidel  <eric@webkit.org>

        Reviewed by Adam Barth.

        Make it possible to build JavaScriptCore and WebCore gyp builds outside of Source
        https://bugs.webkit.org/show_bug.cgi?id=56867

        This should make it possible to build the gyp-generated JavaScriptCore.xcodeproj
        from a JavaScriptCore directory outside of Source.

        * gyp/JavaScriptCore.gyp:
        * gyp/run-if-exists.sh: Added.
        * gyp/update-info-plist.sh: Added.

2011-03-22  Eric Seidel  <eric@webkit.org>

        Reviewed by Adam Barth.

        Add Profiling Configuration to JavaScriptCore gyp build
        https://bugs.webkit.org/show_bug.cgi?id=56862

        It appears this is identical to Release, but I suspect
        there is someone/thing who uses the Profiling target
        so we're adding it for completeness.

        * gyp/JavaScriptCore.gyp:

2011-03-22  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Remove os_win32_files variable from the GYP build
        https://bugs.webkit.org/show_bug.cgi?id=56804

        Now that our understanding of GYP is sufficiently advanced, we don't
        need os_win32_files any more.  (Turns out Eric was right, as he always
        is.)

        * JavaScriptCore.gypi:

2011-03-22  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        GYP build of JavaScriptCore should be able to link from an empty WebKitBuild directory
        https://bugs.webkit.org/show_bug.cgi?id=56803

        Previously, we thought we should generate the derived source files in
        the shared intermediate build products directory, but there are
        assumptions built into other parts of the Mac build system that the
        derived source files will be generated in a particular subdirectory of
        the build products directory.

        This patch is a partial revert of the change that moved the derived
        source files to the shared intermediate directory.  After this patch,
        the GYP build can build JavaScriptCore without help from the main
        normal build system.

        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:
        * gyp/generate-derived-sources.sh:
        * gyp/generate-dtrace-header.sh:

2011-03-22  Jay Civelli  <jcivelli@chromium.org>

        Reviewed by David Levin.

        Adding a contains method to Vector.
        https://bugs.webkit.org/show_bug.cgi?id=55859

        * wtf/Vector.h:
        (WTF::Vector::contains):

2011-03-22  Gabor Loki  <loki@webkit.org>

        Reviewed by Alexey Proskuryakov.

        Fix a bunch of typos in DFG.
        https://bugs.webkit.org/show_bug.cgi?id=56813

        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::parse):
        * dfg/DFGGenerationInfo.h:
        (JSC::DFG::GenerationInfo::setSpilled):
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
        * dfg/DFGGraph.h:
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::setupStubArguments):
        * dfg/DFGJITCompiler.cpp:
        (JSC::DFG::JITCompiler::compileFunction):
        * dfg/DFGJITCompiler.h:
        * dfg/DFGNode.h:
        * dfg/DFGNonSpeculativeJIT.h:
        * dfg/DFGOperations.h:
        * dfg/DFGRegisterBank.h:
        (JSC::DFG::RegisterBank::allocate):
        * dfg/DFGScoreBoard.h:
        (JSC::DFG::ScoreBoard::~ScoreBoard):
        (JSC::DFG::ScoreBoard::allocate):
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:

2011-03-22  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Production configuration in GYP isn&apos;t set up correctly
        https://bugs.webkit.org/show_bug.cgi?id=56786

        Update JavaScriptCore.gyp with information mined from
        JavaScriptCore.xcodeproj.

        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-03-22  Kent Tamura  <tkent@chromium.org>

        Reviewed by Eric Seidel.

        REGRESSION(r80096): Number type input unexpectedly rounds fractional values
        https://bugs.webkit.org/show_bug.cgi?id=56367

        Introduce clampToInteger(unsigned).
        
        * wtf/MathExtras.h:
        (clampToInteger): Added.

2011-03-21  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        GYP build should not have include paths that point within the source tree
        https://bugs.webkit.org/show_bug.cgi?id=56788

        Turns out we don't need these include paths anymore now that we have
        header maps working properly.

        * gyp/JavaScriptCore.gyp:
            - Also, remove jsc.cpp from the excluded list because it's not part
              of the jsc_files variable instead of the javascriptcore_files
              variable.

2011-03-21  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Solve the Assertions.cpp / -Wno-missing-format-attribute mystery
        https://bugs.webkit.org/show_bug.cgi?id=56780

        The reason we couldn't resolve this warning in the GYP build was that
        the normal build disables this warning specifically for this file.
        This patch takes the same approach as the previous patch to
        WebCoreObjCExtras.mm in that it uses a pragma to suppress the warning
        (rather than a build system configuration).

        * JavaScriptCore.xcodeproj/project.pbxproj:
            - Remove the special-case for this file.
        * gyp/JavaScriptCore.gyp:
            - Remove the work-around for this issue.
        * wtf/Assertions.cpp:
            - Add a pragma disabling this warning for this file.

2011-03-21  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        WebCore GYP build shouldn't crash on startup
        https://bugs.webkit.org/show_bug.cgi?id=56776

        Debug builds shouldn't define NDEBUG.  This same logic exists in the
        project.pbxproj file.

        * gyp/JavaScriptCore.gyp:

2011-03-21  Robert Kroeger  <rjkroege@chromium.org>

        Reviewed by Antonio Gomes.

        Flag to enable/disable a GestureReocognizer framework

        https://bugs.webkit.org/show_bug.cgi?id=49345

        * wtf/Platform.h:

2011-03-21  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Add new files to JavaScriptCore.gypi
        https://bugs.webkit.org/show_bug.cgi?id=56766

        * JavaScriptCore.gypi:

2011-03-21  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r81377.
        http://trac.webkit.org/changeset/81377
        https://bugs.webkit.org/show_bug.cgi?id=56765

        WebPageSerializerTest.MultipleFrames is broken (Requested by
        simonjam on #webkit).

        * wtf/Vector.h:

2011-03-21  Gabor Loki  <loki@webkit.org>

        Reviewed by Csaba Osztrogonác.

        Extend constant pool to be able to store 16 bit instructions with a constant
        https://bugs.webkit.org/show_bug.cgi?id=46796

        The putShortWithConstantInt function inserts a 16 bit instruction which
        refers a 32 bits constant or literal. This is a vital function for those
        target which loads a PC relative value with a 16 bit instruction (like
        Thumb-2 instruction set and SH4 architecture).

        * assembler/AssemblerBuffer.h:
        (JSC::AssemblerBuffer::putIntegral):
        (JSC::AssemblerBuffer::putIntegralUnchecked):
        * assembler/AssemblerBufferWithConstantPool.h:

2011-03-21  Philippe Normand  <pnormand@igalia.com>

        Unreviewed, GTK distcheck build fix.

        * GNUmakefile.am:

2011-03-20  Bill Budge  <bbudge@chromium.org>

        Reviewed by Adam Barth.

        Rename ThreadSafeShared to ThreadSafeRefCounted
        https://bugs.webkit.org/show_bug.cgi?id=56714

        No new tests. Exposes no new functionality.

        * API/JSClassRef.h:
        * API/OpaqueJSString.h:
        * GNUmakefile.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/Atomics.h:
        * wtf/CMakeLists.txt:
        * wtf/CrossThreadRefCounted.h:
        (WTF::CrossThreadRefCounted::CrossThreadRefCounted):
        (WTF::::crossThreadCopy):
        * wtf/ThreadSafeRefCounted.h: Copied from wtf/ThreadSafeShared.h.
        (WTF::ThreadSafeRefCountedBase::ThreadSafeRefCountedBase):
        (WTF::ThreadSafeRefCountedBase::ref):
        (WTF::ThreadSafeRefCountedBase::refCount):
        (WTF::ThreadSafeRefCountedBase::derefBase):
        (WTF::ThreadSafeRefCounted::ThreadSafeRefCounted):
        * wtf/ThreadSafeShared.h: Removed.
        * wtf/Threading.h:

2011-03-19  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Darin Adler.

        Remove StringImpl::computeHash()
        https://bugs.webkit.org/show_bug.cgi?id=49894

        Replace remainig StringImpl::computeHash with StringImpl::computeHashStringHasher.

        * wtf/text/AtomicString.cpp:
        (WTF::CStringTranslator::hash):
        (WTF::UCharBufferTranslator::hash):
        (WTF::HashAndCharactersTranslator::hash):
        * wtf/text/StringImpl.h:
        (WTF::StringImpl::setHash):
        (WTF::StringImpl::hash):

2011-03-19  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Darin Adler.

        Rename WTF::StringHasher methods
        https://bugs.webkit.org/show_bug.cgi?id=53532

        Rename createHash to computeHash and createBlobHash to hashMemory.
        Also add a using WTF::StringHasher in the header file.

        * profiler/CallIdentifier.h:
        (JSC::CallIdentifier::Hash::hash):
        * runtime/Identifier.cpp:
        (JSC::IdentifierCStringTranslator::hash):
        (JSC::IdentifierUCharBufferTranslator::hash):
        * wtf/StringHasher.h:
        (WTF::StringHasher::computeHash):
        (WTF::StringHasher::hashMemory):
        * wtf/text/StringHash.h:
        (WTF::CaseFoldingHash::hash):
        * wtf/text/StringImpl.h:
        (WTF::StringImpl::computeHash):
        * wtf/unicode/UTF8.cpp:
        (WTF::Unicode::calculateStringHashAndLengthFromUTF8Internal):

2011-03-18  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        [GTK] JSC crashes in 32bit Release bots after r80743
        https://bugs.webkit.org/show_bug.cgi?id=56180
        
        The crash was caused by referencing GC memory from a GC destructor. This
        is not safe because destruction time / order is not guaranteed.

        * profiler/ProfileGenerator.cpp:
        (JSC::ProfileGenerator::create):
        (JSC::ProfileGenerator::ProfileGenerator):
        (JSC::ProfileGenerator::willExecute):
        (JSC::ProfileGenerator::didExecute):
        * profiler/ProfileGenerator.h:
        (JSC::ProfileGenerator::origin): Made ExecState* the first argument,
        to match the rest of this class and JSC.
        
        Use a JSGlobalObject* instead of an ExecState* with an indirect reference
        to a JSGlobalObject* to track our origin. This is simpler and more
        efficient, and it removes the destruction order dependency that was causing
        our crash.

        * profiler/Profiler.cpp:
        (JSC::Profiler::startProfiling): Updated for change to JSGlobalObject*.
        (JSC::Profiler::stopProfiling): New function for stopping all profiles
        for a given global object. This is more straight-forward than multiplexing
        through the old function.

        (JSC::dispatchFunctionToProfiles): Updated for change to JSGlobalObject*.
        * profiler/Profiler.h: Ditto.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::~JSGlobalObject): Ditto.

2011-03-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        1 Structure leaked beneath JSGlobalData::storeVPtrs()
        https://bugs.webkit.org/show_bug.cgi?id=56595

        * runtime/Executable.cpp:
        (JSC::EvalExecutable::EvalExecutable):
        (JSC::ProgramExecutable::ProgramExecutable):
        (JSC::FunctionExecutable::FunctionExecutable):
        * runtime/Executable.h:
        (JSC::ExecutableBase::ExecutableBase):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::VPtrHackExecutable::VPtrHackExecutable):
        (JSC::ScriptExecutable::ScriptExecutable): Use a raw pointer instead of
        PassRefPtr, like JSString does, since JSGlobalData owns the singleton
        exectuable structure.

2011-03-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Mark Rowe.

        Fixed some string leaks seen on the buildbot
        https://bugs.webkit.org/show_bug.cgi?id=56619

        * runtime/PropertyMapHashTable.h:
        (JSC::PropertyTable::~PropertyTable): DEref!

2011-03-17  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Crash in  JSC::MarkStack::drain Under Stress
        https://bugs.webkit.org/show_bug.cgi?id=56470

        We perform a number of gc allocations while when
        we are setting up new globals in a piece of global
        code.  We do this by adding new properties to the
        symbol table, and then expanding the storage to fit
        at the end.

        If a GC happens during this time we will report an
        incorrect size for the global object's symbol table
        storage.

        This patch corrects this by growing the storage size
        before we starting adding entries to the symbol table.

        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::resizeRegisters):

2011-03-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        1 Structure leaked beneath JSGlobalData::storeVPtrs()
        https://bugs.webkit.org/show_bug.cgi?id=56595

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs): Take local ownership of the Structure
        we're using, since the Executable is not designed to own the Structure.

2011-03-17  Gavin Barraclough  <barraclough@apple.com>

        Rubber Stamped by Sam Weinig.

        Add missing register-register branchTest8 to MacroAssemblerX86Common/X86Assembler.

        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::branchTest8):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::testb_rr):

2011-03-17  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 56603 - DFG JIT related cleanup
        Move node generation out to separate function, move binarySearch algorithm out
        to StdLibExtras, fix Graph::dump() to print comma between non-node children,
        even if there are no node children.

        * bytecode/CodeBlock.h:
        (JSC::getCallReturnOffset):
        (JSC::CodeBlock::getStubInfo):
        (JSC::CodeBlock::getCallLinkInfo):
        (JSC::CodeBlock::getMethodCallLinkInfo):
        (JSC::CodeBlock::bytecodeOffset):
            - Move binaryChop to binarySearch in StdLibExtras
        * dfg/DFGByteCodeParser.cpp:
        (JSC::DFG::ByteCodeParser::ByteCodeParser):
        (JSC::DFG::ByteCodeParser::parse):
        (JSC::DFG::parse):
            - Make m_noArithmetic a member, initialize m_currentIndex in the constructor.
        * dfg/DFGByteCodeParser.h:
            - Change parse() to not take a start index (always 0).
        * dfg/DFGGraph.cpp:
        (JSC::DFG::Graph::dump):
            - Fix Graph::dump() to print comma between non-node children, even if there are no node children.
        * dfg/DFGJITCodeGenerator.h:
        (JSC::DFG::JITCodeGenerator::JITCodeGenerator):
            - Initialize m_compileIndex in constructor.
        * dfg/DFGNonSpeculativeJIT.cpp:
        (JSC::DFG::NonSpeculativeJIT::compile):
        * dfg/DFGNonSpeculativeJIT.h:
            - Spilt out compilation of individual node.
        * dfg/DFGOperations.cpp:
        (JSC::DFG::operationConvertThis):
        * dfg/DFGOperations.h:
            - Cleanup parameter name.
        * dfg/DFGSpeculativeJIT.cpp:
        (JSC::DFG::SpeculativeJIT::compile):
        * dfg/DFGSpeculativeJIT.h:
            - Spilt out compilation of individual node.
        * runtime/Executable.cpp:
        (JSC::tryDFGCompile):
            - Change parse() to not take a start index (always 0).
        * wtf/StdLibExtras.h:
        (WTF::binarySearch):
            - Move binaryChop to binarySearch in StdLibExtras

2011-03-17  Anders Carlsson  <andersca@apple.com>

        Reviewed by Geoffrey Garen.

        Fix clang build.

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs):

2011-03-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        1 Structure leaked beneath JSGlobalData::storeVPtrs()
        https://bugs.webkit.org/show_bug.cgi?id=56595

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs): Now that we have an executable, we need
        to explicitly run its destructor.

2011-03-17  Jeff Miller  <jeffm@apple.com>

        Use a consistent set of file patterns in the svn:ignore property for all .xcodeproj directories, specifically:
        
        *.mode*
        *.pbxuser
        *.perspective*
        project.xcworkspace
        xcuserdata

        * JavaScriptCore.xcodeproj: Modified property svn:ignore.

2011-03-17  Gavin Barraclough  <barraclough@apple.com>

        Reverting r81197, breaks JIT + INTERPRETER build.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::hasGlobalResolveInstructionAtBytecodeOffset):
        (JSC::CodeBlock::hasGlobalResolveInfoAtBytecodeOffset):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addPropertyAccessInstruction):
        (JSC::CodeBlock::addGlobalResolveInstruction):
        (JSC::CodeBlock::addStructureStubInfo):
        * bytecode/Opcode.h:
        * bytecode/StructureStubInfo.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitResolve):
        (JSC::BytecodeGenerator::emitResolveWithBase):
        (JSC::BytecodeGenerator::emitGetById):
        (JSC::BytecodeGenerator::emitPutById):
        (JSC::BytecodeGenerator::emitDirectPutById):
        (JSC::BytecodeGenerator::emitCall):
        (JSC::BytecodeGenerator::emitConstruct):
        (JSC::BytecodeGenerator::emitCatch):

2011-03-17  Ben Taylor  <bentaylor.solx86@gmail.com>

        Reviewed by Alexey Proskuryakov.

        Add a COMPILER(SUNCC) define for Sun Studio 12. 
        https://bugs.webkit.org/show_bug.cgi?56444
        derived from patch 1 of 16 originally from https://bugs.webkit.org/show_bug.cgi?id=24932

        * wtf/Platform.h:

2011-03-17  Jay Civelli  <jcivelli@chromium.org>

        Reviewed by David Levin.

        Adding a contains method to Vector.
        https://bugs.webkit.org/show_bug.cgi?id=55859

        * wtf/Vector.h:
        (WTF::::operator):
        (WTF::::contains):

2011-03-17  Patrick Gansterer  <paroga@webkit.org>

        Fix the interpreter build.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute): Added globalData to inheritorID().

2011-03-16  Sam Weinig  <sam@webkit.org>

        Fix the interpreter build.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::resolve):
        (JSC::Interpreter::resolveSkip):
        (JSC::Interpreter::resolveGlobal):
        (JSC::Interpreter::resolveGlobalDynamic):
        (JSC::Interpreter::resolveBaseAndProperty):
        (JSC::Interpreter::privateExecute):
        Remove .get()s.

2011-03-16  Adam Barth  <abarth@webkit.org>

        Reviewed by James Robinson.

        Remove USE(BUILTIN_UTF8_CODEC)
        https://bugs.webkit.org/show_bug.cgi?id=56508

        We added this recently when we were unsure about the stability of the
        built-in UTF-8 codec.  However, the codec seems to be stable, so we
        don't need the macro.

        * wtf/Platform.h:

2011-03-16  Daniel Bates  <dbates@rim.com>

        Reviewed by Darin Adler.

        Make JIT build for ARM Thumb-2 with RVCT
        https://bugs.webkit.org/show_bug.cgi?id=56440

        Derived from a patch by Dave Tapuska.

        Also, modify the RVCT stub template to indicate that it preserves 8 byte stack alignment.

        * jit/JITStubs.cpp:

2011-03-16  Chao-ying Fu  <fu@mips.com>

        Reviewed by Darin Adler.

        Fix MIPS build with const *void
        https://bugs.webkit.org/show_bug.cgi?id=56513

        * assembler/MacroAssemblerMIPS.h:
        (JSC::MacroAssemblerMIPS::load32):
        (JSC::MacroAssemblerMIPS::store32):

2011-03-16  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        Remove unnecessary caller tracking shenanigans from CodeBlock
        https://bugs.webkit.org/show_bug.cgi?id=56483

        This removes some leftover cruft from when we made CodeBlock
        mark its callees.  Removing it gives us a 0.7% progression,
        reducing the overall regression to ~1.3%.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::shrinkToFit):
        * bytecode/CodeBlock.h:
        (JSC::CallLinkInfo::CallLinkInfo):
        * jit/JIT.cpp:
        (JSC::JIT::linkCall):
        (JSC::JIT::linkConstruct):

2011-03-15  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make Structure creation require a JSGlobalData
        https://bugs.webkit.org/show_bug.cgi?id=56438

        Mechanical change to make Structure::create require JSGlobalData&, and
        require all users to provide the globalData.

        * API/JSCallbackConstructor.h:
        (JSC::JSCallbackConstructor::createStructure):
        * API/JSCallbackFunction.h:
        (JSC::JSCallbackFunction::createStructure):
        * API/JSCallbackObject.h:
        (JSC::JSCallbackObject::createStructure):
        * API/JSContextRef.cpp:
        * JavaScriptCore.exp:
        * debugger/DebuggerActivation.cpp:
        (JSC::DebuggerActivation::DebuggerActivation):
        * debugger/DebuggerActivation.h:
        (JSC::DebuggerActivation::createStructure):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jsc.cpp:
        (GlobalObject::GlobalObject):
        (functionRun):
        (jscmain):
        * runtime/Arguments.h:
        (JSC::Arguments::createStructure):
        * runtime/ArrayPrototype.h:
        (JSC::ArrayPrototype::createStructure):
        * runtime/BooleanObject.h:
        (JSC::BooleanObject::createStructure):
        * runtime/DateInstance.h:
        (JSC::DateInstance::createStructure):
        * runtime/DatePrototype.h:
        (JSC::DatePrototype::createStructure):
        * runtime/ErrorInstance.h:
        (JSC::ErrorInstance::createStructure):
        * runtime/Executable.h:
        (JSC::ExecutableBase::createStructure):
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::createStructure):
        * runtime/FunctionPrototype.h:
        (JSC::FunctionPrototype::createStructure):
        * runtime/GetterSetter.h:
        (JSC::GetterSetter::createStructure):
        * runtime/InternalFunction.h:
        (JSC::InternalFunction::createStructure):
        * runtime/JSAPIValueWrapper.h:
        (JSC::JSAPIValueWrapper::createStructure):
        * runtime/JSActivation.h:
        (JSC::JSActivation::createStructure):
        * runtime/JSArray.cpp:
        (JSC::JSArray::JSArray):
        * runtime/JSArray.h:
        (JSC::JSArray::createStructure):
        * runtime/JSByteArray.cpp:
        (JSC::JSByteArray::createStructure):
        * runtime/JSByteArray.h:
        (JSC::JSByteArray::JSByteArray):
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::createDummyStructure):
        * runtime/JSFunction.h:
        (JSC::JSFunction::createStructure):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs):
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObject):
        (JSC::JSGlobalObject::createStructure):
        * runtime/JSNotAnObject.h:
        (JSC::JSNotAnObject::createStructure):
        * runtime/JSONObject.h:
        (JSC::JSONObject::createStructure):
        * runtime/JSObject.cpp:
        (JSC::JSObject::createInheritorID):
        * runtime/JSObject.h:
        (JSC::JSObject::createStructure):
        (JSC::JSNonFinalObject::createStructure):
        (JSC::JSFinalObject::createStructure):
        (JSC::createEmptyObjectStructure):
        (JSC::JSObject::inheritorID):
        * runtime/JSObjectWithGlobalObject.h:
        (JSC::JSObjectWithGlobalObject::createStructure):
        * runtime/JSPropertyNameIterator.h:
        (JSC::JSPropertyNameIterator::createStructure):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::createStructure):
        * runtime/JSString.h:
        (JSC::RopeBuilder::createStructure):
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::createStructure):
        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::createStructure):
        * runtime/JSZombie.h:
        (JSC::JSZombie::createStructure):
        * runtime/MathObject.h:
        (JSC::MathObject::createStructure):
        * runtime/NativeErrorConstructor.cpp:
        (JSC::NativeErrorConstructor::NativeErrorConstructor):
        * runtime/NativeErrorConstructor.h:
        (JSC::NativeErrorConstructor::createStructure):
        * runtime/NumberConstructor.h:
        (JSC::NumberConstructor::createStructure):
        * runtime/NumberObject.h:
        (JSC::NumberObject::createStructure):
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::createStructure):
        * runtime/RegExpConstructor.h:
        (JSC::RegExpConstructor::createStructure):
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::createStructure):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::createStructure):
        * runtime/StringObject.h:
        (JSC::StringObject::createStructure):
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        (JSC::StringObjectThatMasqueradesAsUndefined::createStructure):
        * runtime/StringPrototype.h:
        (JSC::StringPrototype::createStructure):
        * runtime/Structure.h:
        (JSC::Structure::create):

2011-03-16  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Some conservative root gathering cleanup
        https://bugs.webkit.org/show_bug.cgi?id=56447
        
        SunSpider says 0.5% - 1.8% faster.

        * interpreter/RegisterFile.cpp:
        (JSC::RegisterFile::gatherConservativeRoots):
        * interpreter/RegisterFile.h: New helper function for doing the
        conservative gathering of the register file. It's still conservative,
        since the register file may contain uninitialized values, but it's
        moving-safe, because it only visits values tagged as pointers, so there's
        no risk of mistaking an integer for a pointer and accidentally changing it.

        * runtime/ConservativeSet.cpp:
        (JSC::ConservativeRoots::add):
        * runtime/ConservativeSet.h: Added a single-value add function, used above.

        * runtime/Heap.cpp:
        (JSC::Heap::markRoots): Separated machine stack conservative roots from
        register file conservative roots because machine stack roots must be
        pinned, but register file roots need not be pinned.
        
        Adopted new interface for passing the current stack extent to the machine
        stack root gathering routine. This allows us to exclude marking-related
        data structures on the stack, and thus avoid double-marking the set of
        machine roots.

        * runtime/MachineStackMarker.cpp:
        (JSC::MachineThreads::gatherFromCurrentThread):
        (JSC::MachineThreads::gatherConservativeRoots):
        * runtime/MachineStackMarker.h: Added new interface, described above.

        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::firstAtom):
        * wtf/StdLibExtras.h:
        (WTF::roundUpToMultipleOf): Moved roundUpToMultipleOf so it could be used
        by MachineStacks.

2011-03-16  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        A little bit of MarkStack cleanup
        https://bugs.webkit.org/show_bug.cgi?id=56443
        
        Moved MarkStack functions into MarkStack.h/.cpp.
        
        SunSpider reports no change.

        * runtime/JSArray.h:
        * runtime/JSCell.h: Moved from here...
        * runtime/MarkStack.cpp:
        (JSC::MarkStack::markChildren):
        (JSC::MarkStack::drain): ...to here. Also, no need to inline drain. It's
        a huge function, and not called many times.

        * runtime/MarkStack.h:
        (JSC::MarkStack::~MarkStack): Moved near constructor, per style guide.
        (JSC::MarkStack::append):
        (JSC::MarkStack::deprecatedAppend):
        (JSC::MarkStack::internalAppend): Moved to here.

2011-03-15  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed another deprecatedAppend
        https://bugs.webkit.org/show_bug.cgi?id=56429

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::markStrongHandles):
        * collector/handles/HandleHeap.h: Use HeapRootMarker, since handles are
        marked directly by the Heap.

        * runtime/Heap.cpp:
        (JSC::Heap::markRoots): Ditto.

2011-03-15  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed some more deprecated / unsafe append
        https://bugs.webkit.org/show_bug.cgi?id=56428

        * collector/handles/HandleStack.cpp:
        (JSC::HandleStack::mark):
        * collector/handles/HandleStack.h: Mark the handle stack using a HeapRoot
        marker, since it's a heap root.
        
        * runtime/ArgList.cpp:
        (JSC::MarkedArgumentBuffer::markLists):
        (JSC::MarkedArgumentBuffer::slowAppend):
        * runtime/ArgList.h: Ditto.

        * runtime/Heap.cpp:
        (JSC::Heap::markRoots): Added a mark call for marking the handle stack.
        It seems like Oliver forgot this in his last patch. (!)

        * runtime/MarkStack.h: Removed appendSlots, since it would allow an
        object to embed JSValues directly instead of using WriteBarrier.

        (JSC::MarkStack::append): Added a private append for a list of values.

        (JSC::HeapRootMarker::mark): Access to the above.

2011-03-15  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed a few more deprecatedAppends, and removed HeapRoot<T>
        https://bugs.webkit.org/show_bug.cgi?id=56422
        
        Added HeapRootMarker, a privileged class for marking direct heap roots
        that are iterated during each garbage collection. This is easier to use
        and more reliable than HeapRoot<T>, so I've removed HeapRoot<T>.

        * debugger/Debugger.cpp:
        (JSC::evaluateInGlobalCallFrame):
        * debugger/DebuggerCallFrame.cpp:
        (JSC::DebuggerCallFrame::evaluate):
        * interpreter/CallFrame.h:
        (JSC::ExecState::exception):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/Completion.cpp:
        (JSC::evaluate): exception is no longer a HeapRoot<T>, so no need to
        call .get() on it.

        * runtime/Heap.cpp:
        (JSC::Heap::markProtectedObjects):
        (JSC::Heap::markTempSortVectors):
        (JSC::Heap::markRoots):
        * runtime/Heap.h: Updated to use HeapRootMarker.

        * runtime/JSCell.h:
        (JSC::JSCell::MarkStack::append): Added private functions for
        HeapRootMarker to use.

        * runtime/JSGlobalData.h: exception is no longer a HeapRoot<T>.

        * runtime/MarkStack.h:
        (JSC::HeapRootMarker::HeapRootMarker):
        (JSC::HeapRootMarker::mark): Added private functions for
        HeapRootMarker to use.

        * runtime/SmallStrings.cpp:
        (JSC::SmallStrings::markChildren): Updated to use HeapRootMarker.

        * runtime/SmallStrings.h:
        (JSC::SmallStrings::emptyString):
        (JSC::SmallStrings::singleCharacterString):
        (JSC::SmallStrings::singleCharacterStrings): Updated to use HeapRootMarker.

        * runtime/WriteBarrier.h: Removed HeapRoot<T>.

2011-03-14  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Made the global object moving-GC-safe
        https://bugs.webkit.org/show_bug.cgi?id=56348
        
        SunSpider reports no change.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::markChildren): Removed a dubious comment that
        suggested we do not need to visit all our references during GC, since
        that is not true in a moving GC.

        Re-sorted data members by type, removed one duplicate, and added back
        the one missing mark I found.

        * runtime/JSGlobalObject.h: Re-sorted data members by type.

2011-03-15  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Introduce Local<T> to allow us to start moving to precise marking of locals
        https://bugs.webkit.org/show_bug.cgi?id=56394

        Introduce a new handle type, Local<T> and a scoping mechanism
        LocalScope to allow us to start moving towards precise marking
        of temporaries and local variables.

        We also start to use the new Local<> type in the JSON stringifier
        so that we can have some coverage of their behaviour in the initial
        checkin.

        * GNUmakefile.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.pro:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * collector/handles/Handle.h:
        (JSC::::asObject):
        * collector/handles/HandleStack.cpp: Added.
        (JSC::HandleStack::HandleStack):
        (JSC::HandleStack::mark):
        (JSC::HandleStack::grow):
        * collector/handles/HandleStack.h: Added.
        (JSC::HandleStack::enterScope):
        (JSC::HandleStack::zapTo):
        (JSC::HandleStack::leaveScope):
        (JSC::HandleStack::push):
        * collector/handles/Local.h: Added.
        (JSC::Local::internalSet):
        (JSC::::Local):
        (JSC::::operator):
        (JSC::LocalStack::LocalStack):
        (JSC::LocalStack::peek):
        (JSC::LocalStack::pop):
        (JSC::LocalStack::push):
        (JSC::LocalStack::isEmpty):
        (JSC::LocalStack::size):
        * collector/handles/LocalScope.h: Added.
        (JSC::LocalScope::LocalScope):
        (JSC::LocalScope::~LocalScope):
        (JSC::LocalScope::release):
        * runtime/Heap.cpp:
        (JSC::Heap::markRoots):
        * runtime/Heap.h:
        (JSC::Heap::allocateLocalHandle):
        (JSC::Heap::handleStack):
        * runtime/JSCell.h:
        (JSC::JSCell::::getString):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::allocateLocalHandle):
        * runtime/JSONObject.cpp:
        (JSC::Stringifier::Stringifier):
        (JSC::Stringifier::stringify):
        (JSC::Stringifier::appendStringifiedValue):
        (JSC::Stringifier::Holder::Holder):
        (JSC::Walker::Walker):
        (JSC::Walker::walk):
        (JSC::JSONProtoFuncParse):
        (JSC::JSONProtoFuncStringify):
        (JSC::JSONStringify):
        * runtime/JSONObject.h:
        * runtime/MarkStack.h:
        (JSC::MarkStack::appendValues):
        (JSC::MarkStack::appendSlots):

2011-03-15  Gavin Barraclough  <barraclough@apple.com>

        Rubber Stamped by Sam Weinig.

        Bug 56420 - Remove ENABLE(JIT) code from ByteCompiler
        Some methods have unnecessary differences in name/arguments for interpreter/JIT.

        * bytecode/CodeBlock.cpp:
        * bytecode/CodeBlock.h:
        (JSC::HandlerInfo::HandlerInfo):
        (JSC::CodeBlock::addPropertyAccessInfo):
        (JSC::CodeBlock::addGlobalResolveInfo):
        (JSC::CodeBlock::addCallLinkInfo):
        (JSC::CodeBlock::globalResolveInfo):
        * bytecode/Opcode.h:
        * bytecode/StructureStubInfo.h:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::emitResolve):
        (JSC::BytecodeGenerator::emitResolveWithBase):
        (JSC::BytecodeGenerator::emitGetById):
        (JSC::BytecodeGenerator::emitPutById):
        (JSC::BytecodeGenerator::emitDirectPutById):
        (JSC::BytecodeGenerator::emitCall):
        (JSC::BytecodeGenerator::emitConstruct):
        (JSC::BytecodeGenerator::emitCatch):

2011-03-15  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Fix broken assert in new code.

        * dfg/DFGAliasTracker.h:
        (JSC::DFG::AliasTracker::recordPutByVal):
            - recordPutByVal is called for both PutByVal & PutByValAlias.

2011-03-15  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by Sam Weinig.

        Removed redundant code from BytecodeGenerator.

        * bytecompiler/BytecodeGenerator.cpp:
        * bytecompiler/BytecodeGenerator.h:
            - delete uncalled code missed when reparsing was removed.

2011-03-15  Kevin Ollivier  <kevino@theolliviers.com>

        Reviewed by Darin Adler.

        Introduce WTF_USE_EXPORT_MACROS, which will allow us to put shared library import/export
        info into the headers rather than in export symbol definition files, but disable it on 
        all platforms initially so we can deal with port build issues one port at a time.
        
        https://bugs.webkit.org/show_bug.cgi?id=27551

        * API/JSBase.h:
        * config.h:
        * wtf/Assertions.h:
        * wtf/ExportMacros.h: Added.
        * wtf/Platform.h:

2011-03-14  Laszlo Gombos  <laszlo.1.gombos@nokia.com>

        Unreviewed build fix.

        Buildfix when JIT is not enabled after r81079
        https://bugs.webkit.org/show_bug.cgi?id=56361

        * runtime/Executable.cpp:

2011-03-14  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Made the global object moving-GC-safe
        https://bugs.webkit.org/show_bug.cgi?id=56348
        
        SunSpider reports no change.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::markChildren): Removed a dubious comment that
        suggested we do not need to visit all our references during GC, since
        that is not true in a moving GC.

        Re-sorted data members by type, removed one duplicate, and added back
        the one missing mark I found.

        * runtime/JSGlobalObject.h: Re-sorted data members by type.

2011-03-14  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Made JSWrapperObject and subclasses moving-GC-safe
        https://bugs.webkit.org/show_bug.cgi?id=56346
        
        SunSpider reports no change.

        * runtime/BooleanObject.cpp:
        (JSC::BooleanObject::BooleanObject):
        * runtime/DateInstance.cpp:
        (JSC::DateInstance::DateInstance): No more need for JSGlobalData, since
        we don't initialize the wrapped value in our constructor.

        * runtime/DateInstance.h: Don't set the OverridesMarkChildren flag because
        we do not in fact override markChildren.

        * runtime/DatePrototype.h: Declare an anonymous slot, since wrapper object
        no longer does so for us. Also added an ASSERT to catch a latent bug,
        where DatePrototype stomped on its base class's anonymous slot. Hard-coded
        anonymous slots are a plague on our code. This doesn't cause any problems
        in our existing code since the base class never reads the anonymous slot
        it declares, but it caused crashes when I tried to start using the slot
        in an initial version of this patch.

        * runtime/JSWrapperObject.h:
        (JSC::JSWrapperObject::JSWrapperObject):
        (JSC::JSWrapperObject::internalValue):
        (JSC::JSWrapperObject::setInternalValue): Resolved a problem where
        our internal value was stored in two places: an anonymous slot, and a
        data member which was not always visited during GC. Now, we only use the
        data member, and we always visit it. (Instead of relying on certain
        subclasses to set the OverridesMarkChildren bit, we set it ourselves.)

        * runtime/NumberObject.cpp:
        (JSC::NumberObject::NumberObject): No more need for JSGlobalData, since
        we don't initialize the wrapped value in our constructor.

        * runtime/NumberObject.h: Removed meaningless declaration.

        * runtime/StringObject.cpp:
        (JSC::StringObject::StringObject): No more need for JSGlobalData, since
        we don't initialize the wrapped value in our constructor.

        * runtime/StringObject.h: Don't set the OverridesMarkChildren flag because
        we do not in fact override markChildren.

        * runtime/StringPrototype.h: Declare an anonymous slot, since wrapper object
        no longer does so for us. Also added an ASSERT to catch a latent bug,
        where DatePrototype stomped on its base class's anonymous slot. Hard-coded
        anonymous slots are a plague on our code.

2011-03-14  Michael Saboff  <msaboff@apple.com>

        Reviewed by Gavin Barraclough.

        Look-ahead assertions with back references don’t work as expected
        https://bugs.webkit.org/show_bug.cgi?id=56082

        Changed parentheses assertion processing to temporarily back out the 
        number of known characters after the assertion while processing the 
        assertion.  This was done so that assertions don't fail due to 
        checking the number of required characters as additional to the 
        rest of the express since assertions don't "consume" input.
        Added a byte code to uncheck characters to support the change.

        * yarr/YarrInterpreter.cpp:
        (JSC::Yarr::Interpreter::matchDisjunction):
        (JSC::Yarr::ByteCompiler::uncheckInput):
        (JSC::Yarr::ByteCompiler::emitDisjunction):
        * yarr/YarrInterpreter.h:
        (JSC::Yarr::ByteTerm::UncheckInput):

2011-03-14  Viatcheslav Ostapenko  <ostapenko.viatcheslav@nokia.com>

        Reviewed by Laszlo Gombos.

        [Qt] Warning that round/roundf functions are already defined when compiled with RVCT 4 on symbian.
        https://bugs.webkit.org/show_bug.cgi?id=56133

        Add condition to not compile webkit internal math round functions on RVCT compiler versions 
        from 3.0.0 because they are already defined in compiler math library.

        * wtf/MathExtras.h:

2011-03-14  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Geoffrey Garen & Oliver Hunt.

        Bug 56284 - Add a dataflow intermediate representation for use in JIT generation.

        The JSC JIT presently generates code directly from the bytecode used by the interpreter.
        This is not an optimal intermediate representation for JIT code generation, since it does
        not capture liveness information of values, and provides little opportunity to perform
        any static analysis for even primitive types. The JIT currently generates two code paths,
        a fast path handling common cases, and a slower path handling less common operand types.
        However the slow path jumps back into the fast path, meaning that information arising
        from the earlier type checks cannot be propagated to later operations.

        This patch adds:
            * a dataflow intermediate representation capable of describing a single basic block
              of operations,
            * a mechanism to convert a simple, single-block bytecode functions to the new IR,
            * and a JIT code generator capable of generating code from this representation.

        The JIT generates two code paths, with the slower path not reentering the fast path
        mid-block, allowing speculative optimizations to be made on the hot path, with type
        information arising from these speculative decisions able to be propagated through the
        dataflow. Code generation of both speculative and non-speculative paths exploits the type
        and liveness information represented in the dataflow graph to attempt to avoid redundant
        boxing and type-checking of values, and to remove unnecessary spills of temporary values
        to the RegisterFile.

        The dataflow JIT currently can only support a subset of bytecode operations, limited to
        arithmetic, bit-ops, and basic property access. Functions that cannot be compiled by the
        dataflow JIT will be run using the existing JIT. The coverage of the dataflow JIT will be
        expanded to include, control-flow, function calls, and then the long-tail of remaining
        bytecode instructions. The JIT presently only support JSVALUE64, and as a consequence of
        this only supports x86-64.

        The status of the dataflow JIT is currently work-in-progress. Limitations of the present
        JIT code generation may cause performance regressions, particularly:
            * the policy to only generate arithmetic code on the speculative path using integer
              instructions, never using floating point.
            * the policy to only generate arithmetic code on the non-speculative path using
              floating point instructions, never using integer.
            * always generating JSValue adds on the non-speculative path as a call out to a
              C-function, never handling this in JIT code.
            * always assuming by-Value property accesses on the speculative path to be array
              accesses.
            * generating all by-Value property accesses from the non-speculative path as a call
              out to a C-function.
            * generating all by-Indentifer property accesses as a call out to a C-function.
        Due to these regressions, the code is landed in a state where it is disabled in most
        cases by the ENABLE_DFG_JIT_RESTRICTIONS guard in Platform.h. As these regressions are
        addressed, the JIT will be allowed to trigger in more cases.

        * JavaScriptCore.xcodeproj/project.pbxproj:
            - Added new files to Xcode project.
        * dfg: Added.
            - Added directory for new code.
        * dfg/DFGByteCodeParser.cpp: Added.
        * dfg/DFGByteCodeParser.h: Added.
            - Contruct a DFG::Graph representation from a bytecode CodeBlock.
        * dfg/DFGGenerationInfo.h: Added.
            - Track type & register information for VirtualRegisters during JIT code generation.
        * dfg/DFGGraph.cpp: Added.
        * dfg/DFGGraph.h: Added.
            - Dataflow graph intermediate representation for code generation.
        * dfg/DFGJITCodeGenerator.cpp: Added.
        * dfg/DFGJITCodeGenerator.h: Added.
            - Base class for SpeculativeJIT & NonSpeculativeJIT to share common functionality.
        * dfg/DFGJITCompiler.cpp: Added.
        * dfg/DFGJITCompiler.h: Added.
            - Class responsible for driving code generation of speculativeJIT & non-speculative
              code paths from the dataflow graph.
        * dfg/DFGNonSpeculativeJIT.cpp: Added.
        * dfg/DFGNonSpeculativeJIT.h: Added.
            - Used to generate the non-speculative code path, this make no assumptions
              about operand types.
        * dfg/DFGOperations.cpp: Added.
        * dfg/DFGOperations.h: Added.
            - Helper functions called from the JIT generated code.
        * dfg/DFGRegisterBank.h: Added.
            - Used to track contents of physical registers during JIT code generation.
        * dfg/DFGSpeculativeJIT.cpp: Added.
        * dfg/DFGSpeculativeJIT.h: Added.
            - Used to generate the speculative code path, this make assumptions about
              operand types to enable optimization.
        * runtime/Executable.cpp:
            - Add code to attempt to use the DFG JIT to compile a function, with fallback
              to the existing JIT.
        * wtf/Platform.h:
            - Added compile guards to enable the DFG JIT.

2011-03-14  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed more cases of DeprecatedPtr (exception, SmallStrings)
        https://bugs.webkit.org/show_bug.cgi?id=56332

        * runtime/Identifier.cpp:
        (JSC::Identifier::add):
        (JSC::Identifier::addSlowCase): Use a variable instead of a hard-coded
        constant, to make this code less brittle.

        * runtime/JSGlobalData.h: Use HeapRoot instead of DeprecatedPtr because
        this reference is owned and managed directly by the heap.

        * runtime/JSString.cpp:
        (JSC::JSString::substringFromRope):
        * runtime/JSString.h:
        (JSC::jsSingleCharacterString):
        (JSC::jsSingleCharacterSubstring):
        (JSC::jsString):
        (JSC::jsStringWithFinalizer):
        (JSC::jsSubstring):
        (JSC::jsOwnedString): Use a variable instead of a hard-coded
        constant, to make this code less brittle.

        * runtime/SmallStrings.cpp:
        (JSC::SmallStringsStorage::rep):
        (JSC::SmallStringsStorage::SmallStringsStorage):
        (JSC::SmallStrings::SmallStrings):
        (JSC::SmallStrings::markChildren):
        (JSC::SmallStrings::clear):
        (JSC::SmallStrings::count): Use a variable instead of a hard-coded
        constant, to make this code less brittle.

        * runtime/SmallStrings.h:
        (JSC::SmallStrings::singleCharacterString): Use HeapRoot instead of
        DeprecatedPtr because these references are owned and managed directly by
        the heap.
        
        Stop using FixedArray because we only want a very limited set
        of classes to be able to use HeapRoot. (Replaced with manual ASSERTs.)

        * runtime/WriteBarrier.h:
        (JSC::operator==):
        (JSC::WriteBarrier::WriteBarrier):
        (JSC::HeapRoot::HeapRoot):
        (JSC::HeapRoot::operator=): Added HeapRoot, which is allowed to set
        without write barrier because we assume all HeapRoots are scanned during
        all GC passes.

2011-03-14  Brian Weinstein  <bweinstein@apple.com>

        Reviewed by Adam Roben and Gavin Barraclough.

        FileSystemWin.cpp needs listDirectory() implementation
        https://bugs.webkit.org/show_bug.cgi?id=56331
        <rdar://problem/9126635>
        
        Give StringConcatenate the ability to deal with const UChar*'s as a String type to append.

        * wtf/text/StringConcatenate.h:

2011-03-14  Mark Rowe  <mrowe@apple.com>

        Reviewed by Oliver Hunt.

        <http://webkit.org/b/56304> REGRESSION(r80892): 100,000+ leaks seen on the build bot

        * API/JSClassRef.cpp:
        (OpaqueJSClass::OpaqueJSClass): Don't leak any existing entry for the given name if
        the class definition contains duplicates. This also removes what look to be leaks
        of the StringImpl instances that are used as keys: the HashMap key type is a RefPtr
        which retains / releases the instances at the appropriate time, so explicitly calling
        ref is not necessary.

2011-03-14  Oliver Hunt  <oliver@apple.com>

        Fix windows build

        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::emitLoadInt32):
        (JSC::JSInterfaceJIT::tagFor):
        (JSC::JSInterfaceJIT::payloadFor):
        (JSC::JSInterfaceJIT::intPayloadFor):
        (JSC::JSInterfaceJIT::intTagFor):
        (JSC::JSInterfaceJIT::addressFor):

2011-03-11  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Ensure all values are correctly tagged in the registerfile
        https://bugs.webkit.org/show_bug.cgi?id=56214

        This patch makes sure that all JSCell pointers written to
        the registerfile are correctly tagged as JSCells, and replaces
        raw int usage with the immediate representation.

        For performance, register pressure, and general saneness reasons
        I've added abstractions for reading and writing the tag
        and payload of integer registers directly for the JSVALUE64
        encoding.

        * interpreter/Register.h:
        (JSC::Register::withInt):
        (JSC::Register::withCallee):
        (JSC::Register::operator=):
        (JSC::Register::i):
        (JSC::Register::activation):
        (JSC::Register::function):
        (JSC::Register::propertyNameIterator):
        (JSC::Register::scopeChain):
        * jit/JIT.h:
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        (JSC::JIT::compileOpCallSlowCase):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitPutToCallFrameHeader):
        (JSC::JIT::emitPutCellToCallFrameHeader):
        (JSC::JIT::emitPutIntToCallFrameHeader):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        (JSC::JIT::emit_op_load_varargs):
        (JSC::JIT::emitSlow_op_load_varargs):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::intPayloadFor):
        (JSC::JSInterfaceJIT::intTagFor):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::returnJSValue):
        (JSC::SpecializedThunkJIT::returnDouble):
        (JSC::SpecializedThunkJIT::returnInt32):
        (JSC::SpecializedThunkJIT::returnJSCell):

2011-03-13  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        A few Heap-related renames (sans file moves, which should come next)
        https://bugs.webkit.org/show_bug.cgi?id=56283
        
        ConservativeSet => ConservativeRoots. "Set" was misleading, since items
        are not uniqued. Also, "Roots" is more specific about what's in the set.
        
        MachineStackMarker => MachineThreads. "Threads" is more descriptive of
        the fact that this class maintains a set of all threads using JSC.
        "Stack" was misleading, since this class traverses stacks and registers.
        "Mark" was misleading, since this class doesn't mark anything anymore.
        
        registerThread => addCurrentThread. "Current" is more specific.
        unregisterThread => removeCurrentThread. "Current" is more specific.
        
        "currentThreadRegistrar" => threadSpecific. The only point of this data
        structure is to register a thread-specific destructor with a pointer to
        this.
        
        "mark...Conservatively" => "gather". "Mark" is not true, since these
        functions don't mark anything. "Conservatively" is redundant, since they
        take "ConservativeRoots" as an argument.

        * API/APIShims.h:
        (JSC::APIEntryShimWithoutLock::APIEntryShimWithoutLock):
        * JavaScriptCore.exp:
        * runtime/ConservativeSet.cpp:
        (JSC::ConservativeRoots::grow):
        (JSC::ConservativeRoots::add):
        * runtime/ConservativeSet.h:
        (JSC::ConservativeRoots::ConservativeRoots):
        (JSC::ConservativeRoots::~ConservativeRoots):
        (JSC::ConservativeRoots::size):
        (JSC::ConservativeRoots::roots):
        * runtime/Heap.cpp:
        (JSC::Heap::Heap):
        (JSC::Heap::markRoots):
        * runtime/Heap.h:
        (JSC::Heap::machineThreads):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::makeUsableFromMultipleThreads):
        * runtime/MachineStackMarker.cpp:
        (JSC::MachineThreads::MachineThreads):
        (JSC::MachineThreads::~MachineThreads):
        (JSC::MachineThreads::makeUsableFromMultipleThreads):
        (JSC::MachineThreads::addCurrentThread):
        (JSC::MachineThreads::removeThread):
        (JSC::MachineThreads::removeCurrentThread):
        (JSC::MachineThreads::gatherFromCurrentThreadInternal):
        (JSC::MachineThreads::gatherFromCurrentThread):
        (JSC::MachineThreads::gatherFromOtherThread):
        (JSC::MachineThreads::gatherConservativeRoots):
        * runtime/MachineStackMarker.h:
        * runtime/MarkStack.h:
        (JSC::MarkStack::append):

2011-03-13  David Kilzer  <ddkilzer@apple.com>

        BUILD FIX for armv7 after r80969

        Bug 56270 - The JIT 'friend's many classes in JSC; start unwinding this.
        <https://bugs.webkit.org/show_bug.cgi?id=56270>

        * assembler/MacroAssemblerARMv7.h:
        (JSC::MacroAssemblerARMv7::load32): Made void* address argument
        const.
        (JSC::MacroAssemblerARMv7::store32): Ditto.

2011-03-13  Geoffrey Garen  <ggaren@apple.com>

        Not reviewed.

        Try to fix the Mac build.

        * JavaScriptCore.xcodeproj/project.pbxproj: Make sure to forward
        ConervativeSet.h, since it's now visible when compiling other projects.

2011-03-13  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed another case of DeprecatedPtr (ConservativeSet)
        https://bugs.webkit.org/show_bug.cgi?id=56281
        
        The ConservativeSet is an internal data structure used during marking,
        so direct pointers are fine.

        * runtime/ConservativeSet.cpp:
        (JSC::ConservativeSet::grow):
        * runtime/ConservativeSet.h: Added some accessors, for use by MarkStack::append.
        (JSC::ConservativeSet::~ConservativeSet): Fixed a typo where we calculated
        the size of the set based on sizeof(DeprecatedPtr<T>*) instead of
        sizeof(DeprecatedPtr<T>). I'm not sure if this had real-world implications or not.
        (JSC::ConservativeSet::size):
        (JSC::ConservativeSet::set): Use direct pointers, as stated above. 

        * runtime/Heap.cpp:
        (JSC::Heap::markRoots):
        * runtime/MarkStack.h:
        (JSC::MarkStack::append): Created a special case of append for
        ConservativeSet. I didn't want to add back a generic "append JSCell*"
        function, since other class might start using that wrong. (In the end,
        this function might go away, since the Heap will want to do something
        slightly more interesting with the conservative set, but this is OK for
        now.)

2011-03-13  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed another case of DeprecatedPtr (PutPropertySlot)
        https://bugs.webkit.org/show_bug.cgi?id=56278

        * runtime/PutPropertySlot.h:
        (JSC::PutPropertySlot::setExistingProperty):
        (JSC::PutPropertySlot::setNewProperty):
        (JSC::PutPropertySlot::base): Direct pointer is fine for PutPropertySlot,
        since it's a stack-allocated temporary.

2011-03-13  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Removed one case of DeprecatedPtr (ScopeChainIterator)
        https://bugs.webkit.org/show_bug.cgi?id=56277

        * runtime/ScopeChain.h: Direct pointer is fine for ScopeChainIterator,
        since it's a stack-allocated temporary.

2011-03-13  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 56273 - Add three operand forms to MacroAssember operations.

        Adding for X86(_64) for now, should be rolled out to other backends as necessary.
        These may allow more efficient code generation in some cases, avoiding the need
        for unnecessary register-register move instructions.

        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::Jump::link):
        (JSC::AbstractMacroAssembler::Jump::linkTo):
            - marked these methods const.
        (JSC::AbstractMacroAssembler::Jump::isSet):
            - add a method to check whether a Jump object has been set to
              reference an instruction, or is in a null, unset state. 
        * assembler/MacroAssemblerCodeRef.h:
        (JSC::FunctionPtr::FunctionPtr):
            - add non-explicit constructor, for FunctionPtr's to C/C++ functions.
        * assembler/MacroAssemblerX86Common.h:
        (JSC::MacroAssemblerX86Common::and32):
        (JSC::MacroAssemblerX86Common::lshift32):
        (JSC::MacroAssemblerX86Common::or32):
        (JSC::MacroAssemblerX86Common::rshift32):
        (JSC::MacroAssemblerX86Common::urshift32):
        (JSC::MacroAssemblerX86Common::xor32):
        (JSC::MacroAssemblerX86Common::moveDouble):
        (JSC::MacroAssemblerX86Common::addDouble):
        (JSC::MacroAssemblerX86Common::divDouble):
        (JSC::MacroAssemblerX86Common::subDouble):
        (JSC::MacroAssemblerX86Common::mulDouble):
        (JSC::MacroAssemblerX86Common::branchTruncateDoubleToInt32):
        (JSC::MacroAssemblerX86Common::branchTest32):
        (JSC::MacroAssemblerX86Common::branchTest8):
        (JSC::MacroAssemblerX86Common::branchAdd32):
        (JSC::MacroAssemblerX86Common::branchMul32):
        (JSC::MacroAssemblerX86Common::branchSub32):
            - add three operand forms of these instructions.
        * assembler/MacroAssemblerX86_64.h:
        (JSC::MacroAssemblerX86_64::addDouble):
        (JSC::MacroAssemblerX86_64::convertInt32ToDouble):
        (JSC::MacroAssemblerX86_64::loadPtr):
        (JSC::MacroAssemblerX86_64::branchTestPtr):
        * assembler/X86Assembler.h:
        (JSC::X86Assembler::JmpSrc::isSet):
            - add a method to check whether a JmpSrc object has been set to
              reference an instruction, or is in a null, unset state. 
        (JSC::X86Assembler::movsd_rr):
            - added FP register-register move.
        (JSC::X86Assembler::linkJump):
            - Add an assert to check jumps aren't linked more than once.
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitLoadInt32ToDouble):
            - load integers to the FPU via regsiters on x86-64.

2011-03-13  Gavin Barraclough  <barraclough@apple.com>

        ARM build fix.

        * assembler/MacroAssemblerARM.h:
        (JSC::MacroAssemblerARM::load32):

2011-03-13  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 56270 - The JIT 'friend's many classes in JSC; start unwinding this.

        The JIT need to 'friend' other classes in order to be able to calculate offsets
        of various properties, or the absolute addresses of members within specific objects,
        in order to JIT generate code that will access members within the class when run.

        Instead of using friends in these cases, switch to providing specific accessor
        methods to provide this information.  In the case of offsets, these can be static
        functions, and in the case of pointers to members within a specific object these can
        be const methods returning pointers to const values, to prevent clients from
        modifying values otherwise encapsulated within classes.

        * bytecode/SamplingTool.h:
        * interpreter/Register.h:
        * interpreter/RegisterFile.h:
        * runtime/JSArray.h:
        * runtime/JSCell.h:
        * runtime/JSTypeInfo.h:
        * runtime/JSVariableObject.h:
        * runtime/Structure.h:
        * wtf/RefCounted.h:
            - Change these classes to no longer friend the JIT, add accessors for member offsets.
        * jit/JIT.cpp:
        * jit/JITCall32_64.cpp:
        * jit/JITInlineMethods.h:
        * jit/JITOpcodes.cpp:
        * jit/JITOpcodes32_64.cpp:
        * jit/JITPropertyAccess.cpp:
        * jit/JITPropertyAccess32_64.cpp:
            - Change the JIT to use class accessors, rather than taking object ofsets directly.
        * assembler/AbstractMacroAssembler.h:
        * assembler/MacroAssemblerX86_64.h:
        * assembler/X86Assembler.h:
            - Since the accessors for objects members return const pointers to retain encapsulation,
              methods generating code with absolute addresses must be able to handle const pointers
              (the JIT doesn't write to these values, do dies treat the pointer to value as const
              from within the C++ code of the JIT, if not at runtime!).

2011-03-12  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r80919.
        http://trac.webkit.org/changeset/80919
        https://bugs.webkit.org/show_bug.cgi?id=56251

        all windows bots failed to compile this change (Requested by
        loislo on #webkit).

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecode/StructureStubInfo.cpp:
        * interpreter/Register.h:
        (JSC::Register::withInt):
        (JSC::Register::withCallee):
        (JSC::Register::operator=):
        (JSC::Register::i):
        (JSC::Register::activation):
        (JSC::Register::function):
        (JSC::Register::propertyNameIterator):
        (JSC::Register::scopeChain):
        * jit/JIT.h:
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        (JSC::JIT::compileOpCallSlowCase):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitPutToCallFrameHeader):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        (JSC::JIT::emit_op_load_varargs):
        (JSC::JIT::emitSlow_op_load_varargs):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::payloadFor):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::returnJSValue):
        (JSC::SpecializedThunkJIT::returnDouble):
        (JSC::SpecializedThunkJIT::returnInt32):
        (JSC::SpecializedThunkJIT::returnJSCell):
        * runtime/ArgList.cpp:
        * runtime/DateConversion.cpp:
        * runtime/GCActivityCallbackCF.cpp:
        * runtime/Identifier.cpp:
        * runtime/JSActivation.h:
        (JSC::asActivation):
        * runtime/JSLock.cpp:
        * runtime/JSNumberCell.cpp:
        * runtime/JSObject.h:
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSValue.h:
        * runtime/JSZombie.cpp:
        * runtime/MarkedBlock.cpp:
        * runtime/MarkedSpace.cpp:
        * runtime/PropertyNameArray.cpp:
        * runtime/ScopeChain.h:
        (JSC::ExecState::globalThisValue):
        * wtf/DateMath.cpp:

2011-03-11  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Ensure all values are correctly tagged in the registerfile
        https://bugs.webkit.org/show_bug.cgi?id=56214

        This patch makes sure that all JSCell pointers written to
        the registerfile are correctly tagged as JSCells, and replaces
        raw int usage with the immediate representation.

        For performance, register pressure, and general saneness reasons
        I've added abstractions for reading and writing the tag
        and payload of integer registers directly for the JSVALUE64
        encoding.

        * interpreter/Register.h:
        (JSC::Register::withInt):
        (JSC::Register::withCallee):
        (JSC::Register::operator=):
        (JSC::Register::i):
        (JSC::Register::activation):
        (JSC::Register::function):
        (JSC::Register::propertyNameIterator):
        (JSC::Register::scopeChain):
        * jit/JIT.h:
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCallVarargs):
        (JSC::JIT::compileOpCall):
        (JSC::JIT::compileOpCallSlowCase):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitPutToCallFrameHeader):
        (JSC::JIT::emitPutCellToCallFrameHeader):
        (JSC::JIT::emitPutIntToCallFrameHeader):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        (JSC::JIT::emit_op_load_varargs):
        (JSC::JIT::emitSlow_op_load_varargs):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::privateCompileCTINativeCall):
        (JSC::JIT::emit_op_get_pnames):
        (JSC::JIT::emit_op_next_pname):
        * jit/JSInterfaceJIT.h:
        (JSC::JSInterfaceJIT::intPayloadFor):
        (JSC::JSInterfaceJIT::intTagFor):
        * jit/SpecializedThunkJIT.h:
        (JSC::SpecializedThunkJIT::returnJSValue):
        (JSC::SpecializedThunkJIT::returnDouble):
        (JSC::SpecializedThunkJIT::returnInt32):
        (JSC::SpecializedThunkJIT::returnJSCell):

2011-03-11  Dimitri Glazkov  <dglazkov@chromium.org>

        Reviewed by Eric Seidel.

        Introduce project_dir variable and make paths a whole lot saner. Ok, a little bit saner.
        https://bugs.webkit.org/show_bug.cgi?id=56231

        * JavaScriptCore.gypi: Added project_dir variable.
        * gyp/JavaScriptCore.gyp: Changed to use project_dir, rather than DEPTH/JavaScriptCore.
        * gyp/generate-dtrace-header.sh: Changed to use project_dir.

2011-03-11  Dimitri Glazkov  <dglazkov@chromium.org>

        Reviewed by Adam Barth.

        Start using derived sources correctly and link minidom with JavaScriptCore gyp project.
        https://bugs.webkit.org/show_bug.cgi?id=56217

        * gyp/JavaScriptCore.gyp: Added derived source files and passing of shared directory
            to the scripts.
        * gyp/generate-derived-sources.sh: Changed to use passed directory.
        * gyp/generate-dtrace-header.sh: Ditto.

2011-03-11  Eric Carlson  <eric.carlson@apple.com>

        Reviewed by Sam Weinig.

        <rdar://problem/8955589> Adopt AVFoundation media back end on Lion.

        No new tests, existing media tests cover this.

        * JavaScriptCore.exp: Export cancelCallOnMainThread
        * wtf/Platform.h: Define WTF_USE_AVFOUNDATION.

2011-03-11  Dimitri Glazkov  <dglazkov@chromium.org>

        Reviewed by Adam Barth.

        Tweak dylib paths and add dtrace header generation action to JavaScriptCore gyp project.
        https://bugs.webkit.org/show_bug.cgi?id=56207

        * JavaScriptCore.gypi: Added Tracing.d to the sources.
        * gyp/generate-dtrace-header.sh: Added.
        * gyp/JavaScriptCore.gyp: Updated dylib paths (now the project can see them),
            and added DTrace header generating step.

2011-03-10  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Fix allocation of native function with a cached thunk
        https://bugs.webkit.org/show_bug.cgi?id=56127

        Fix this race condition found while fixing zombies.

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::clearWeakPointers):
        * runtime/Heap.cpp:
        (JSC::Heap::reset):
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::markChildren):
        * runtime/JSValue.h:
        (JSC::JSValue::decode):
        * runtime/JSZombie.cpp:
        (JSC::JSZombie::leakedZombieStructure):
        * runtime/JSZombie.h:
        (JSC::JSZombie::createStructure):
        * runtime/MarkedBlock.cpp:

2011-03-10  Luiz Agostini  <luiz.agostini@openbossa.org>

        Reviewed by Andreas Kling.

        [Qt] fast/workers/stress-js-execution.html is crashing on Qt bot (intermittently)
        https://bugs.webkit.org/show_bug.cgi?id=33008

        Defining WTF_USE_PTHREAD_BASED_QT=1 for platforms where QThread uses pthread internally.
        Symbian is excluded because pthread_kill does not work on it. Mac is excluded because
        it has its own ways to do JSC threading.

        Defining WTF_USE_PTHREADS inside MachineStackMarker.cpp if USE(PTHREAD_BASED_QT) is true.

        * runtime/MachineStackMarker.cpp:
        * wtf/Platform.h:

2011-03-10  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        Bug 56077 - ES5 conformance issues with RegExp.prototype

        There are three issues causing test failures in sputnik.

        (1) lastIndex should be converted at the point it is used, not the point it is set (this is visible if valueOf is overridden).
        (2) The 'length' property of the test/exec functions should be 1.
        (3) If no input is specified, the input to test()/exec() is "undefined" (i.e. ToString(undefined)) - not RegExp.input.

        * runtime/RegExpObject.cpp:
        (JSC::RegExpObject::markChildren):
            - Added to mark lastIndex
        (JSC::regExpObjectLastIndex):
        (JSC::setRegExpObjectLastIndex):
            - lastIndex is now stored as a JSValue.
        (JSC::RegExpObject::match):
            - Use accessor methods to get/set lastIndex, add fast case for isUInt32 (don't convert to double).
        * runtime/RegExpObject.h:
        (JSC::RegExpObject::setLastIndex):
        (JSC::RegExpObject::setLastIndex):
            - Set lastIndex, either from a size_t or a JSValue.
        (JSC::RegExpObject::getLastIndex):
            - Get lastIndex.
        (JSC::RegExpObject::RegExpObjectData::RegExpObjectData):
            - Initialize as a JSValue.
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
            - Add test/exec properties with length 1.
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):
            - Do not read RegExp.input if none is provided.
        * tests/mozilla/js1_2/regexp/RegExp_input.js:
        * tests/mozilla/js1_2/regexp/RegExp_input_as_array.js:
            - Update these tests (they relied on non-ES5 behaviour).

2011-03-10  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Rolled back in 80277 and 80280 with event handler layout test failures fixed.
        https://bugs.webkit.org/show_bug.cgi?id=55653        

        The failures were caused by a last minute typo: assigning to currentEvent
        instead of m_currentEvent.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecompiler/BytecodeGenerator.cpp:
        * jit/JITOpcodes.cpp:
        * jit/JITOpcodes32_64.cpp:
        * runtime/Arguments.h:
        * runtime/JSActivation.cpp:
        * runtime/JSActivation.h:
        * runtime/JSCell.h:
        * runtime/JSGlobalObject.cpp:
        * runtime/JSGlobalObject.h:
        * runtime/JSObject.cpp:
        * runtime/JSStaticScopeObject.cpp:
        * runtime/JSStaticScopeObject.h:
        * runtime/JSVariableObject.h:
        * runtime/MarkedSpace.cpp:
        * runtime/MarkedSpace.h:

2011-03-09  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        jquery/manipulation.html fails after r80598
        https://bugs.webkit.org/show_bug.cgi?id=56019

        When linking a call, codeblock now takes ownership of the linked function
        This removes the need for unlinking, and thus the incorrectness that was
        showing up in these tests.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::~CodeBlock):
        (JSC::CodeBlock::markAggregate):
        * bytecode/CodeBlock.h:
        (JSC::CallLinkInfo::CallLinkInfo):
        (JSC::CallLinkInfo::setUnlinked):
        (JSC::CodeBlock::addCaller):
        * jit/JIT.cpp:
        (JSC::JIT::privateCompile):
        (JSC::JIT::linkCall):
        (JSC::JIT::linkConstruct):
        * jit/JIT.h:
        * runtime/Executable.cpp:
        * runtime/Executable.h:

2011-03-09  Daniel Bates  <dbates@rim.com>

        Attempt to fix the WinCE build after changeset 80684 <http://trac.webkit.org/changeset/80684>
        (Bug #56041<https://bugs.webkit.org/show_bug.cgi?id=56041>).

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute): Substitute variable callFrame for exec in call to createSyntaxError().

2011-03-09  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 56041 - RexExp constructor should only accept flags "gim"
        Fix for issues introduced in r80667.

        Invalid flags to a RegExp literal are a late syntax error!

        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::addRegExp):
            - Pass a PassRefPtr<RegExp>
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addRegExp):
        (JSC::BytecodeGenerator::emitNewRegExp):
        * bytecompiler/BytecodeGenerator.h:
            - Pass a PassRefPtr<RegExp>
        * bytecompiler/NodesCodegen.cpp:
        (JSC::RegExpNode::emitBytecode):
            - Should not be ASSERTing that the flags are valid - this is a late(er) error.
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
            - Need to check for error from RegExp constructor.
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
            - Need to check for error from RegExp constructor.
        * runtime/RegExp.h:
        (JSC::RegExp::isValid):
            - Make isValid check that the regexp was created with valid flags.
        * runtime/RegExpKey.h:
            - Since we'll not create RegExp objects with invalid flags, separate out the deleted value.

2011-03-09  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix part 2.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-03-09  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix part 1.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-03-09  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Darin Adler.

        Bug 56041 - RexExp constructor should only accept flags "gim"
        We also should be passing the flags around as a bitfield rather than a string,
        and should not have redundant, incompatible code for converting the string to a bitfield!

        * JavaScriptCore.exp:
        * bytecompiler/NodesCodegen.cpp:
        (JSC::RegExpNode::emitBytecode):
            - Need to parse flags string to enum.
        * runtime/RegExp.cpp:
        (JSC::regExpFlags):
        (JSC::RegExp::RegExp):
        (JSC::RegExp::create):
            - Add method to parse flags string to enum, change constructor/create args to take enum.
        * runtime/RegExp.h:
        (JSC::RegExp::global):
        (JSC::RegExp::ignoreCase):
        (JSC::RegExp::multiline):
            - Change to use new enum values.
        * runtime/RegExpCache.cpp:
        (JSC::RegExpCache::lookupOrCreate):
        (JSC::RegExpCache::create):
        * runtime/RegExpCache.h:
            - Changed to use regExpFlags enum instead of int/const UString&.
        * runtime/RegExpConstructor.cpp:
        (JSC::constructRegExp):
            - Add use new enum parsing, check for error.
        * runtime/RegExpKey.h:
        (JSC::RegExpKey::RegExpKey):
        * runtime/RegExpPrototype.cpp:
        (JSC::RegExpPrototype::RegExpPrototype):
            - Pass NoFlags value instead of empty string.
        (JSC::regExpProtoFuncCompile):
            - Add use new enum parsing, check for error.
        * runtime/StringPrototype.cpp:
        (JSC::stringProtoFuncMatch):
        (JSC::stringProtoFuncSearch):
            - Pass NoFlags value instead of empty string.

2011-03-08  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig

        Bug 55994 - Functions on Array.prototype should check length first.
        These methods are designed to work on generic objects too, and if 'length'
        is a getter that throws an exception, ensure this is correctly thrown
        (even if other exceptions would be thrown, too).

        Make the length check the first thing we do.
        This change shows a progression on SunSpider on my machine, but this is likely bogus.

        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncToString):
        (JSC::arrayProtoFuncToLocaleString):
        (JSC::arrayProtoFuncJoin):
        (JSC::arrayProtoFuncPop):
        (JSC::arrayProtoFuncPush):
        (JSC::arrayProtoFuncReverse):
        (JSC::arrayProtoFuncShift):
        (JSC::arrayProtoFuncSlice):
        (JSC::arrayProtoFuncSort):
        (JSC::arrayProtoFuncSplice):
        (JSC::arrayProtoFuncUnShift):
        (JSC::arrayProtoFuncFilter):
        (JSC::arrayProtoFuncMap):
        (JSC::arrayProtoFuncEvery):
        (JSC::arrayProtoFuncForEach):
        (JSC::arrayProtoFuncSome):
        (JSC::arrayProtoFuncReduce):
        (JSC::arrayProtoFuncReduceRight):
        (JSC::arrayProtoFuncIndexOf):
        (JSC::arrayProtoFuncLastIndexOf):

2011-03-07  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make CodeBlock GC write barrier safe
        https://bugs.webkit.org/show_bug.cgi?id=55910

        In order to make CodeBlock WriteBarrier safe it was necessary
        to make it have a single GC owner, and for that reason I have
        made ExecutableBase a GC allocated object.  This required
        updating their creation routines as well as all sites that hold
        a reference to them.  GC objects that held Executable's have been
        converted to WriteBarriers, and all other sites now use Global<>.

        As an added benefit this gets rid of JSGlobalData's list of
        GlobalCodeBlocks.

        Perf testing shows a 0.5% progression on v8, vs. a 0.3% regression
        on SunSpider.  Given none of the tests that show regressions
        demonstrate a regression on their own, and sampling shows up nothing.
        I suspect we're just getting one or two additional gc passes at
        the end of the run.

        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::dump):
        (JSC::CodeBlock::CodeBlock):
        (JSC::EvalCodeCache::markAggregate):
        (JSC::CodeBlock::markAggregate):
        * bytecode/CodeBlock.h:
        (JSC::CodeBlock::ownerExecutable):
        (JSC::CodeBlock::addConstant):
        (JSC::CodeBlock::constantRegister):
        (JSC::CodeBlock::getConstant):
        (JSC::CodeBlock::addFunctionDecl):
        (JSC::CodeBlock::addFunctionExpr):
        (JSC::GlobalCodeBlock::GlobalCodeBlock):
        (JSC::ExecState::r):
        * bytecode/EvalCodeCache.h:
        (JSC::EvalCodeCache::get):
        * bytecode/SamplingTool.h:
        (JSC::ScriptSampleRecord::ScriptSampleRecord):
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::addConstantValue):
        (JSC::BytecodeGenerator::emitEqualityOp):
        * bytecompiler/BytecodeGenerator.h:
        (JSC::BytecodeGenerator::makeFunction):
        * debugger/Debugger.cpp:
        (JSC::evaluateInGlobalCallFrame):
        * debugger/DebuggerCallFrame.cpp:
        (JSC::DebuggerCallFrame::evaluate):
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::callEval):
        * jit/JITInlineMethods.h:
        (JSC::JIT::emitLoadDouble):
        (JSC::JIT::emitLoadInt32ToDouble):
        * jit/JITStubs.cpp:
        (JSC::JITThunks::JITThunks):
        (JSC::JITThunks::hostFunctionStub):
        (JSC::JITThunks::clearHostFunctionStubs):
        * jit/JITStubs.h:
        * runtime/Completion.cpp:
        (JSC::checkSyntax):
        (JSC::evaluate):
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::EvalExecutable):
        (JSC::ProgramExecutable::ProgramExecutable):
        (JSC::FunctionExecutable::FunctionExecutable):
        (JSC::FunctionExecutable::~FunctionExecutable):
        (JSC::EvalExecutable::markChildren):
        (JSC::ProgramExecutable::markChildren):
        (JSC::FunctionExecutable::markChildren):
        (JSC::FunctionExecutable::fromGlobalCode):
        * runtime/Executable.h:
        (JSC::ExecutableBase::ExecutableBase):
        (JSC::ExecutableBase::createStructure):
        (JSC::NativeExecutable::create):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::VPtrHackExecutable::VPtrHackExecutable):
        (JSC::ScriptExecutable::ScriptExecutable):
        (JSC::EvalExecutable::create):
        (JSC::EvalExecutable::createStructure):
        (JSC::ProgramExecutable::create):
        (JSC::ProgramExecutable::createStructure):
        (JSC::FunctionExecutable::create):
        (JSC::FunctionExecutable::createStructure):
        * runtime/FunctionConstructor.cpp:
        (JSC::constructFunction):
        * runtime/Heap.cpp:
        (JSC::Heap::destroy):
        (JSC::Heap::markRoots):
        * runtime/Heap.h:
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::JSActivation):
        (JSC::JSActivation::markChildren):
        * runtime/JSActivation.h:
        (JSC::JSActivation::JSActivationData::JSActivationData):
        * runtime/JSCell.h:
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::~JSFunction):
        (JSC::JSFunction::markChildren):
        * runtime/JSFunction.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::storeVPtrs):
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::getHostFunction):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncEval):
        * runtime/JSObject.cpp:
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::markChildren):
        * runtime/JSStaticScopeObject.h:
        (JSC::JSStaticScopeObject::JSStaticScopeObjectData::JSStaticScopeObjectData):
        (JSC::JSStaticScopeObject::JSStaticScopeObject):
        * runtime/JSZombie.cpp:
        (JSC::JSZombie::leakedZombieStructure):
        * runtime/JSZombie.h:
        (JSC::JSZombie::createStructure):
        * runtime/MarkedSpace.h:

2011-03-07  Andy Estes  <aestes@apple.com>

        Reviewed by Dan Bernstein.

        REGRESSION (r79060): Timestamp is missing from tweets in twitter.
        https://bugs.webkit.org/show_bug.cgi?id=55228

        A change to the date parser to handle the case where the year is
        specified before the time zone inadvertently started accepting strings
        such as '+0000' as valid years. Those strings actually represent time
        zones in an offset of hours and minutes from UTC, not years.

        * wtf/DateMath.cpp:
        (WTF::parseDateFromNullTerminatedCharacters): If the current character
        in dateString is '+' or '-', do not try to parse the next token as a
        year.

2011-03-06  Yuta Kitamura  <yutak@chromium.org>

        Reviewed by Kent Tamura.

        Add SHA-1 for new WebSocket protocol
        https://bugs.webkit.org/show_bug.cgi?id=55039

        The code is based on Chromium's portable SHA-1 implementation
        (src/base/sha1_portable.cc). Modifications were made in order
        to make the code comply with WebKit coding style.

        * GNUmakefile.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/MD5.cpp:
        (WTF::MD5::MD5):
        * wtf/SHA1.cpp: Added.
        (WTF::testSHA1): This function will be run the first time SHA1
        constructor is called. This function computes a few hash values
        and checks the results in debug builds. However, constructor is
        probably not a good place to run these tests, so we need to find
        a good place for it (bug 55853).
        (WTF::expectSHA1):
        (WTF::f):
        (WTF::k):
        (WTF::rotateLeft):
        (WTF::SHA1::SHA1):
        (WTF::SHA1::addBytes):
        (WTF::SHA1::computeHash):
        (WTF::SHA1::finalize):
        (WTF::SHA1::processBlock):
        (WTF::SHA1::reset):
        * wtf/SHA1.h: Added.
        (WTF::SHA1::addBytes):
        * wtf/wtf.pri:

2011-03-05  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Add Derived Sources to WebCore GYP build
        https://bugs.webkit.org/show_bug.cgi?id=55813

        Rename the action to be friendlier.

        * gyp/JavaScriptCore.gyp:

2011-03-04  Viatcheslav Ostapenko  <ostapenko.viatcheslav@nokia.com>

        Reviewed by Laszlo Gombos.

        [Qt] Need symbian version of cryptographicallyRandomValuesFromOS
        https://bugs.webkit.org/show_bug.cgi?id=55782

        Implement Symbian version of cryptographicallyRandomValuesFromOS

        * wtf/OSRandomSource.cpp:
        (WTF::cryptographicallyRandomValuesFromOS):

2011-03-04  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Cameron Zwarich.

        Bug 55815 - Should throw an exception from JSObject::defineOwnProperty if !isExtensible().

        * runtime/JSObject.cpp:
        (JSC::JSObject::defineOwnProperty):
            Add missing check.

2011-03-04  Gavin Barraclough  <barraclough@apple.com>

        Rubber stamped by olliej.

        Bug 54945 - The web page hangs towards the end of page load in Interpreter enabled javascript code in the latest webkit trunk.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::privateExecute):
            (1) don't infinite loop.
            (2) goto 1.

2011-03-04  Gavin Barraclough  <barraclough@apple.com>

        cmake build fix.

        * CMakeLists.txt:

2011-03-04  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Add Copy Files step to JavaScriptCore GYP build for apitest and minidom
        https://bugs.webkit.org/show_bug.cgi?id=55798

        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-03-04  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Remove unneeded round-trips through ../Source in the Chromium GYP build
        https://bugs.webkit.org/show_bug.cgi?id=55795

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-03-04  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Use target_defaults to reduce boilerplate in GYP build system
        https://bugs.webkit.org/show_bug.cgi?id=55790

        Instead of setting up the configuration in each target, just defer to
        target_defaults.  Also, removed a define that was redundant with the
        xcconfig.

        * gyp/JavaScriptCore.gyp:

2011-03-03  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 55736 - Implement seal/freeze/preventExtensions for normal object types.
        Provide basic functionallity from section 15.2.4 of ECMA-262.
        This support will need expanding to cover arrays, too.

        Shows a 0.5% progression on SunSpidey, this seems to be due to changing
        ObjectConstructor to use a static table.

        * DerivedSources.make:
        * JavaScriptCore.exp:
        * interpreter/CallFrame.h:
        (JSC::ExecState::objectConstructorTable):
            Add a static table for ObjectConstructor.
        * runtime/CommonIdentifiers.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::~JSGlobalData):
            Add a static table for ObjectConstructor.
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::reset):
            Add a static table for ObjectConstructor.
        * runtime/JSObject.cpp:
        (JSC::JSObject::seal):
        (JSC::JSObject::freeze):
        (JSC::JSObject::preventExtensions):
            Transition the object's structure.
        (JSC::JSObject::defineOwnProperty):
            Check isExtensible.
        * runtime/JSObject.h:
        (JSC::JSObject::isSealed):
        (JSC::JSObject::isFrozen):
        (JSC::JSObject::isExtensible):
            These wrap method on structure.
        (JSC::JSObject::putDirectInternal):
            Check isExtensible.
        * runtime/ObjectConstructor.cpp:
        (JSC::ObjectConstructor::ObjectConstructor):
        (JSC::ObjectConstructor::getOwnPropertySlot):
        (JSC::ObjectConstructor::getOwnPropertyDescriptor):
            Change ObjectConstructor to use a static table.
        (JSC::objectConstructorSeal):
        (JSC::objectConstructorFreeze):
        (JSC::objectConstructorPreventExtensions):
        (JSC::objectConstructorIsSealed):
        (JSC::objectConstructorIsFrozen):
        (JSC::objectConstructorIsExtensible):
            Add new methods on Object.
        * runtime/ObjectConstructor.h:
        (JSC::ObjectConstructor::createStructure):
        * runtime/Structure.cpp:
        (JSC::Structure::Structure):
            init/propagate  m_preventExtensions
        (JSC::Structure::sealTransition):
        (JSC::Structure::freezeTransition):
        (JSC::Structure::preventExtensionsTransition):
            transition the structure, materializing the property map, setting m_preventExtensions & changing attributes.
        (JSC::Structure::isSealed):
        (JSC::Structure::isFrozen):
            check attributes to detect if object is sealed/frozen.
        * runtime/Structure.h:
        (JSC::Structure::isExtensible):
            checks the m_preventExtensions flag.

2011-03-04  Steve Falkenburg  <sfalken@apple.com>

        Reviewed by Jon Honeycutt.

        Adopt VersionStamper tool for Windows WebKit DLLs
        https://bugs.webkit.org/show_bug.cgi?id=55784
        <rdar://problem/9021273>
        
        We now use a tool to stamp the version number onto the Apple WebKit DLLs
        during the post-build step.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.rc: Removed.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCorePostBuild.cmd:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCorePreBuild.cmd:

2011-03-04  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        JavaScriptCore GYP build should use a header map
        https://bugs.webkit.org/show_bug.cgi?id=55712

        This patch moves the os-win32 files into their own variable so that we
        can use a header map in the Apple Mac Xcode build.  The problem is that
        the header map searches the whole project rather than just the files
        included in a given target.  Another solution to this problem is to
        make GYP smarter about filtering out what files are added to the
        project file.

        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-03-03  Ryosuke Niwa  <rniwa@webkit.org>

        Reviewed by Darin Adler.

        Remove LOOSE_PASS_OWN_ARRAY_PTR from PassOwnArrayPtr.h
        https://bugs.webkit.org/show_bug.cgi?id=55554

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::copyGlobalsTo): Pass nullptr instead of 0.
        (JSC::JSGlobalObject::resizeRegisters): Ditto; also use OwnArrayPtr instead of a raw pointer.
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::addStaticGlobals): Ditto.
        * wtf/PassOwnArrayPtr.h: Removed #define LOOSE_PASS_OWN_ARRAY_PTR
        (WTF::PassOwnArrayPtr::PassOwnArrayPtr): Added a constructor that takes nullptr_t.

2011-03-03  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Add jsc to JavaScriptCore GYP build
        https://bugs.webkit.org/show_bug.cgi?id=55711

        * JavaScriptCore.gypi:
            - Move jsc.cpp into jsc_files because it's really part of the jsc
              target.
        * JavaScriptCore.xcodeproj/project.pbxproj:
            - Remove extraneous files from the normal jsc build.  I probably
              added these by mistake at some point.
        * gyp/JavaScriptCore.gyp:
            - Add the jsc target to the GYP file.

2011-03-03  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Add testapi to JavaScriptCore GYP build
        https://bugs.webkit.org/show_bug.cgi?id=55707

        The new testapi target is slightly incomplete.  There's a resource
        copying step that we don't quite have yet.

        This patch also cleans up some of the configuration issues in
        JavaScriptCore.xcodeproj.  It seems kind of wordy to repeat these for
        each target.  I suspect there's a more compact way of defining the
        configurations, but this removes the "Default" configuration, which is
        progress.

        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-03-03  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Teach JavaScriptCore GYP build about private headers
        https://bugs.webkit.org/show_bug.cgi?id=55532

        This patch distinguishes between public and private framework headers
        so that public headers are copied into the Headers directory and
        private headers are copied into the PrivateHeaders directory.

        * gyp/JavaScriptCore.gyp:

2011-03-03  Geoffrey Garen  <ggaren@apple.com>

        Rolled out 80277 and 80280 because they caused event handler layout test
        failures.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecompiler/BytecodeGenerator.cpp:
        * jit/JITOpcodes.cpp:
        * jit/JITOpcodes32_64.cpp:
        * runtime/Arguments.h:
        * runtime/JSActivation.cpp:
        * runtime/JSActivation.h:
        * runtime/JSCell.h:
        * runtime/JSGlobalObject.cpp:
        * runtime/JSGlobalObject.h:
        * runtime/JSObject.cpp:
        * runtime/JSStaticScopeObject.cpp:
        * runtime/JSStaticScopeObject.h:
        * runtime/JSVariableObject.h:
        * runtime/MarkedSpace.cpp:
        * runtime/MarkedSpace.h:

2011-03-03  Kevin Ollivier  <kevino@theolliviers.com>

        [wx] Build fix. Alter order of headers included to make sure windows.h
        is configured by wx, and skip Posix implementation file we don't use on Win.

        * wscript:
        * wtf/wx/StringWx.cpp:

2011-03-03  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        JSVariableObject needs to use WriteBarrier for symboltable property storage
        https://bugs.webkit.org/show_bug.cgi?id=55698

        Replace the direct usage of Register in JSVariableObject (and descendents)
        with WriteBarrier.  This requires updating the Arguments object to use
        WriteBarrier as well.

        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::unwindCallFrame):
        (JSC::Interpreter::privateExecute):
        (JSC::Interpreter::retrieveArguments):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * runtime/ArgList.h:
        (JSC::MarkedArgumentBuffer::initialize):
        * runtime/Arguments.cpp:
        (JSC::Arguments::markChildren):
        (JSC::Arguments::copyToRegisters):
        (JSC::Arguments::fillArgList):
        (JSC::Arguments::getOwnPropertySlot):
        (JSC::Arguments::getOwnPropertyDescriptor):
        (JSC::Arguments::put):
        * runtime/Arguments.h:
        (JSC::Arguments::setActivation):
        (JSC::Arguments::Arguments):
        (JSC::Arguments::copyRegisters):
        (JSC::JSActivation::copyRegisters):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::markChildren):
        (JSC::JSActivation::symbolTableGet):
        (JSC::JSActivation::symbolTablePut):
        (JSC::JSActivation::symbolTablePutWithAttributes):
        (JSC::JSActivation::put):
        (JSC::JSActivation::putWithAttributes):
        (JSC::JSActivation::argumentsGetter):
        * runtime/JSActivation.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::put):
        (JSC::JSGlobalObject::putWithAttributes):
        (JSC::JSGlobalObject::markChildren):
        (JSC::JSGlobalObject::copyGlobalsFrom):
        (JSC::JSGlobalObject::copyGlobalsTo):
        (JSC::JSGlobalObject::resizeRegisters):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::setRegisters):
        (JSC::JSGlobalObject::addStaticGlobals):
        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::put):
        (JSC::JSStaticScopeObject::putWithAttributes):
        * runtime/JSVariableObject.cpp:
        (JSC::JSVariableObject::symbolTableGet):
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::registerAt):
        (JSC::JSVariableObject::JSVariableObjectData::JSVariableObjectData):
        (JSC::JSVariableObject::symbolTableGet):
        (JSC::JSVariableObject::symbolTablePut):
        (JSC::JSVariableObject::symbolTablePutWithAttributes):
        (JSC::JSVariableObject::copyRegisterArray):
        (JSC::JSVariableObject::setRegisters):

2011-03-03  Geoffrey Garen  <ggaren@apple.com>

        Try to fix Windows build.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Removed obsolete symbol.

        * runtime/JSStaticScopeObject.cpp:
        (JSC::JSStaticScopeObject::getOwnPropertySlot): Don't mark this function
        inline -- it's virtual.

2011-03-02  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        Moved all variable object storage inline -- upping the object size limit to 1K
        https://bugs.webkit.org/show_bug.cgi?id=55653

        * JavaScriptCore.exp:
        * bytecompiler/BytecodeGenerator.cpp:
        * jit/JITOpcodes.cpp:
        * runtime/Arguments.h:
        * runtime/JSActivation.h: Removed out-of-line storage. Changed d-> to m_.

        * runtime/JSCell.h:
        (JSC::JSCell::MarkedSpace::sizeClassFor): Added an imprecise size class
        to accomodate objects up to 1K.

        * runtime/JSGlobalObject.cpp:
        * runtime/JSGlobalObject.h: Removed out-of-line storage. Changed d-> to m_.

        * runtime/JSObject.cpp: Don't ASSERT that JSFinalObject fills the maximum
        object size, since it doesn't anymore.

        * runtime/JSStaticScopeObject.cpp:
        * runtime/JSStaticScopeObject.h:
        * runtime/JSVariableObject.h: Removed out-of-line storage. Changed d-> to m_.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h: Added an imprecise size class to accomodate objects up to 1K.

2011-03-03  Timothy Hatcher  <timothy@apple.com>

        Make APIShims usable from WebCore.

        Reviewed by Oliver Hunt.

        * ForwardingHeaders/JavaScriptCore/APIShims.h: Added.
        * GNUmakefile.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreGenerated.make:
        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-03-03  Peter Varga  <pvarga@webkit.org>

        Reviewed by Oliver Hunt.

        Begin Characters Optimization Causes YARR Interpreter Errors
        https://bugs.webkit.org/show_bug.cgi?id=55479

        The addBeginTerm function is removed because it doesn't correctly handle those
        cases when an "invalid" term has been
        collected (e.g. CharacterClass). Move the removed function to the
        setupAlternativeBeginTerms method's switch-case
        where the non-allowed cases are correctly handled.

        Reenable the Beginning Character Optimization in the YARR Interpreter again.

        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPatternConstructor::setupAlternativeBeginTerms):
        (JSC::Yarr::YarrPattern::compile):

2011-03-02  Jessie Berlin  <jberlin@apple.com>

        Reviewed by Adam Roben.

        WebKit2: Use CFNetwork Sessions API.
        https://bugs.webkit.org/show_bug.cgi?id=55435

        Add the ability to create a Private Browsing storage session.

        * wtf/Platform.h:
        Add a new #define for using CF Storage Sessions.

2011-03-02  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Remove "register slot" concept from PropertySlot
        https://bugs.webkit.org/show_bug.cgi?id=55621

        PropertySlot had already stopped storing Register "slots"
        so this patch is simply removing that api entirely.
        This exposed a problem in the ProgramNode constructor for
        BytecodeGenerator where it reads from the registerfile
        before it has initialised it.

        This bug wasn't a problem before as we were merely testing
        for property existence rather than the actual value, and
        used to work because setRegisterSlot didn't check that the
        provided slot contained an initialised value.

        To get around this issue we now use symbolTableHasProperty
        to do the symbol table check without trying to read the
        RegisterFile.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator):
        * runtime/Arguments.cpp:
        (JSC::Arguments::getOwnPropertySlot):
        * runtime/JSActivation.cpp:
        (JSC::JSActivation::symbolTableGet):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::symbolTableHasProperty):
        * runtime/JSVariableObject.h:
        (JSC::JSVariableObject::symbolTableGet):
        * runtime/PropertySlot.h:

2011-03-02  Daniel Cheng  <dcheng@chromium.org>

        Reviewed by David Levin.

        Add feature define for data transfer items
        https://bugs.webkit.org/show_bug.cgi?id=55510

        * Configurations/FeatureDefines.xcconfig:
        * wtf/Platform.h:

2011-03-02  Adam Roben  <aroben@apple.com>

        Delete old .res files whenever any .vsprops file changes

        Prospective fix for <http://webkit.org/b/55599> r80079 caused incremental Windows builds to
        fail

        Reviewed by Tony Chang.

        * JavaScriptCore.vcproj/JavaScriptCore/react-to-vsprops-changes.py:
        (main): Restructured code to loop over a set of file extensions, deleting any old files that
        have that extension. Now deletes .res files, too. (We previously deleted any file matching
        *.manifest*, but that turned out to just be the union of *.manifest and *.res.)

2011-03-02  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Teach JavaScriptCore GYP build how to build minidom
        https://bugs.webkit.org/show_bug.cgi?id=55536

        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-03-01  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        JavaScriptCore GYP build should copy some headers into the target framework
        https://bugs.webkit.org/show_bug.cgi?id=55524

        After this patch, all the framework headers are exported as public
        headers.  We need to teach GYP how to handle private headers.

        I struggled to determine how to store the information about whether a
        header was public, private, or project (i.e., not exported).
        Generally, the GYPI should just list the files, but it seemed siliy to
        have an almost duplicated list of files in the GYP file itself.  If
        this design doesn't scale, we might have to revisit it in the future.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:
        * JavaScriptCore.gypi:
        * gyp/JavaScriptCore.gyp:

2011-03-01  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r80079.
        http://trac.webkit.org/changeset/80079
        https://bugs.webkit.org/show_bug.cgi?id=55547

        "Broke the Win debug build?" (Requested by dcheng on #webkit).

        * wtf/Platform.h:

2011-03-01  Daniel Cheng  <dcheng@chromium.org>

        Reviewed by David Levin.

        Add feature define for data transfer items
        https://bugs.webkit.org/show_bug.cgi?id=55510

        * wtf/Platform.h:

2011-03-01  Oliver Hunt  <oliver@apple.com>

        Reviewed by Joseph Pecoraro.

        Misaligned memory access in CloneDeserializer on all ARM arch.
        https://bugs.webkit.org/show_bug.cgi?id=48742

        Add a CPU class for architectures that need aligned addresses
        for memory access.

        * wtf/Platform.h:

2011-03-01  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Add pre- and post-build actions for JavaScriptCore GYP build
        https://bugs.webkit.org/show_bug.cgi?id=55507

        After this patch, we have all the steps for building the main
        JavaScriptCore framework except the "copy headers" step, which I'll do
        next.

        * gyp/JavaScriptCore.gyp:

2011-03-01  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Rolled back in r79627 now that the underlying cause for it crashing is fixed.
        https://bugs.webkit.org/show_bug.cgi?id=55159

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/Heap.cpp:
        (JSC::Heap::allocateSlowCase):
        * runtime/Heap.h:
        * runtime/JSCell.h:
        (JSC::JSCell::MarkedSpace::sizeClassFor):
        (JSC::JSCell::Heap::allocate):
        (JSC::JSCell::JSCell::operator new):
        * runtime/MarkedBlock.h:
        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::SizeClass::SizeClass):

2011-03-01  Mark Rowe  <mrowe@apple.com>

        Reviewed by Sam Weinig.

        Replace two script phases that do nothing but copy files with copy files build phases.

        This speeds up the build by a few seconds on high-end Mac Pros.

        * JavaScriptCore.xcodeproj/project.pbxproj:

2011-03-01  David Kilzer  <ddkilzer@apple.com>

        Spring cleaning!

        Rubber-stamped by Mark Rowe.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        (Copy Into Framework): Remove "set -x" and its comment.

2011-03-01  Michael Saboff  <msaboff@apple.com>

        Reviewed by Darin Adler.

        TinyMCE not working in nightlies
        https://bugs.webkit.org/show_bug.cgi?id=54978

        Disabling setupBeginChars() to temporarily work arround the test 
        failure.  Filed https://bugs.webkit.org/show_bug.cgi?id=55479
        to track fixing the issue.

        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPattern::compile):

2011-02-23  Joseph Pecoraro  <joepeck@webkit.org>

        Reviewed by Kenneth Rohde Christiansen.

        Viewport parsing no longer accepts "1.0;" value as valid.
        https://bugs.webkit.org/show_bug.cgi?id=53705

        Include a didReadNumber parameter to String -> float / double
        conversion functions. This way, if the "ok" boolean out
        parameter is false, you can check to see if there in fact
        was a valid number parsed with garbage at the end. Examples
        of that would be parsing "123x456" would have ok = false,
        but didReadNumber = true.

        * JavaScriptCore.exp:
        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::toDouble):
        (WTF::StringImpl::toFloat):
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.cpp:
        (WTF::String::toDouble):
        (WTF::String::toFloat):
        (WTF::charactersToDouble):
        (WTF::charactersToFloat):
        * wtf/text/WTFString.h:

2011-02-28  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Gavin Barraclough.

        Past-the-end writes in VM exceptions (caused crashes in r79627)
        https://bugs.webkit.org/show_bug.cgi?id=55448
        
        Some exceptions had the wrong structures, so they misoverestimated their
        inline storage sizes.

        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData): Use the right structure.

        * runtime/JSObject.h:
        (JSC::JSNonFinalObject::JSNonFinalObject):
        (JSC::JSFinalObject::JSFinalObject): ASSERT that our structure capacity
        is correct to verify this doesn't happen again.

2011-03-01  Andras Becsi  <abecsi@webkit.org>

        Reviewed by Csaba Osztrogonác.

        [Qt] Clean up the project files and move common options to WebKit.pri.

        * JavaScriptCore.pri: Move options also needed in WebCore into WebKit.pri.
        * JavaScriptCore.pro: Deduplicate options.
        * jsc.pro: Ditto.

2011-03-01  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Teach JavaScriptCore GYP build about DEPTH
        https://bugs.webkit.org/show_bug.cgi?id=55425

        In addition to teaching the JavaScriptCore GYP build about DEPTH, this
        change overrides the GCC warning configuration to disable a warning
        that's causing probems in Assertions.cpp.  With that warning disabled,
        JavaScriptCore builds again.

        * gyp/JavaScriptCore.gyp:

2011-02-28  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-02-28  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r79948.
        http://trac.webkit.org/changeset/79948
        https://bugs.webkit.org/show_bug.cgi?id=55439

        "caused crashes on the SL release bot" (Requested by ggaren on
        #webkit).

        * runtime/JSGlobalData.h:
        * runtime/WriteBarrier.h:

2011-02-28  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-02-28  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig & Darin Adler.

        Bug 55423 - Clean up property tables in Structure

        Encapsulate, reduce duplication of table search code,
        and reduce the size of the tables (remove the index,
        just maintain the tables in the correct order).

        Shows a 0.5% - 1% progression on sunspider.

        * JavaScriptCore.exp:
        * runtime/PropertyMapHashTable.h:
        (JSC::isPowerOf2):
        (JSC::nextPowerOf2):
            bit ops used to calculate table size.
        (JSC::PropertyMapEntry::PropertyMapEntry):
        (JSC::PropertyTable::ordered_iterator::operator++):
        (JSC::PropertyTable::ordered_iterator::operator==):
        (JSC::PropertyTable::ordered_iterator::operator!=):
        (JSC::PropertyTable::ordered_iterator::operator*):
        (JSC::PropertyTable::ordered_iterator::operator->):
        (JSC::PropertyTable::ordered_iterator::ordered_iterator):
            implementation of the iterator types
        (JSC::PropertyTable::PropertyTable):
        (JSC::PropertyTable::~PropertyTable):
            constructors take an initial capacity for the table,
            a table to copy, or both.
        (JSC::PropertyTable::begin):
        (JSC::PropertyTable::end):
            create in-order iterators.
        (JSC::PropertyTable::find):
            search the hash table
        (JSC::PropertyTable::add):
            add a value to the hash table
        (JSC::PropertyTable::remove):
            remove a value from the hash table
        (JSC::PropertyTable::size):
        (JSC::PropertyTable::isEmpty):
            accessors.
        (JSC::PropertyTable::propertyStorageSize):
        (JSC::PropertyTable::clearDeletedOffsets):
        (JSC::PropertyTable::hasDeletedOffset):
        (JSC::PropertyTable::getDeletedOffset):
        (JSC::PropertyTable::addDeletedOffset):
            cache deleted (available) offsets in the property storage array.
        (JSC::PropertyTable::copy):
            take a copy of the PropertyTable, potentially expanding the capacity.
        (JSC::PropertyTable::sizeInMemory):
            used for DEBUG build statistics
        (JSC::PropertyTable::reinsert):
        (JSC::PropertyTable::rehash):
        (JSC::PropertyTable::tableCapacity):
        (JSC::PropertyTable::deletedEntryIndex):
        (JSC::PropertyTable::skipDeletedEntries):
        (JSC::PropertyTable::table):
        (JSC::PropertyTable::usedCount):
        (JSC::PropertyTable::dataSize):
        (JSC::PropertyTable::sizeForCapacity):
        (JSC::PropertyTable::canInsert):
            these methods provide internal implementation.
        * runtime/Structure.cpp:
        (JSC::Structure::dumpStatistics):
        (JSC::Structure::~Structure):
        (JSC::Structure::materializePropertyMap):
        (JSC::Structure::despecifyDictionaryFunction):
        (JSC::Structure::addPropertyTransition):
        (JSC::Structure::flattenDictionaryStructure):
        (JSC::Structure::copyPropertyTable):
        (JSC::Structure::get):
        (JSC::Structure::despecifyFunction):
        (JSC::Structure::despecifyAllFunctions):
        (JSC::Structure::put):
        (JSC::Structure::remove):
        (JSC::Structure::createPropertyMap):
        (JSC::Structure::getPropertyNames):
        (JSC::PropertyTable::checkConsistency):
        (JSC::Structure::checkConsistency):
            factored out code to PropertyMapHashTable.h
        * runtime/Structure.h:
        (JSC::Structure::propertyStorageSize):
        (JSC::Structure::isEmpty):
        (JSC::Structure::get):
            factored out code to PropertyMapHashTable.h

2011-02-28  Xan Lopez  <xlopez@igalia.com>

        Another fix build :(

        Fix typo.

        * runtime/MachineStackMarker.cpp:
        (JSC::freePlatformThreadRegisters):

2011-02-28  Xan Lopez  <xlopez@igalia.com>

        Unreviewed build fix for Snow Leopard.

        * runtime/MachineStackMarker.cpp:
        (JSC::freePlatformThreadRegisters):

2011-02-28  Alejandro G. Castro  <alex@igalia.com>

        Unreviewed, fix SnowLeopard compilation after r79952.

        * runtime/MachineStackMarker.cpp:
        (JSC::freePlatformThreadRegisters):

2011-02-28  Mark Rowe  <mrowe@apple.com>

        Reviewed by Darin Adler.

        <http://webkit.org/b/55430> OwnArrayPtr.h's LOOSE_OWN_ARRAY_PTR results in link errors.

        * wtf/OwnArrayPtr.h:
        (WTF::::set): Implement OwnArrayPtr::set.

2011-02-28  Martin Zoubek  <martin.zoubek@acision.com> and Alejandro G. Castro  <alex@igalia.com>

        Reviewed by Martin Robinson.

        Multithread support for JSC on UNIX
        https://bugs.webkit.org/show_bug.cgi?id=26838

        Implement suspendThread() and resumeThread() for systems with
        pthread.h using thread signal handler.

        * runtime/MachineStackMarker.cpp:
        (JSC::pthreadSignalHandlerSuspendResume):
        (JSC::MachineStackMarker::Thread::Thread):
        (JSC::getCurrentPlatformThread):
        (JSC::suspendThread):
        (JSC::resumeThread):
        (JSC::getPlatformThreadRegisters):
        (JSC::otherThreadStackPointer):
        (JSC::freePlatformThreadRegisters):
        (JSC::MachineStackMarker::markOtherThreadConservatively):
        * wtf/Platform.h: Added Gtk port to use
        ENABLE_JSC_MULTIPLE_THREADS.

2011-02-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Darin Adler.

        Stop using DeprecatedPtr for the global exception slot
        https://bugs.webkit.org/show_bug.cgi?id=55424

        Create GCRootPtr to signify that the exception slot is
        a gcroot, and so is exempt from the usual writebarrier
        restrictions.

        * runtime/JSGlobalData.h:
        * runtime/WriteBarrier.h:
        (JSC::GCRootPtr::GCRootPtr):
        (JSC::GCRootPtr::operator=):

2011-02-28  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        Use more xcconfig files in JavaScriptCore gyp build
        https://bugs.webkit.org/show_bug.cgi?id=55391

        The GYP experts tell me that we have have a total of two xcconfig
        files: one for the xcodeproj as a whole and one for each target.  This
        patch uses that technique to re-use the existing xcconfig files and
        eliminate the duplication.

        Technically, this patch introduces some build errors because the
        xcconfig files assume that the xcodeproj file is one level higher in
        the directory hierarchy.  Specifically, the xcodeproj file can no
        longer find the Info.plist or the prefix header.  I plan to fix that in
        a subsequent patch.

        Also, this patch introduces the Release and Production configurations,
        which should work correctly now.

        * gyp/JavaScriptCore.gyp:

2011-02-28  Jon Honeycutt  <jhoneycutt@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        Add symbol to export.

2011-02-28  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make ScopeChainNode GC allocated
        https://bugs.webkit.org/show_bug.cgi?id=55283

        Simplify lifetime and other issues with the scopechain
        by making it gc allocated.  This allows us to simplify
        function exit and unwinding, as well as making the
        current iterative refcounting go away.

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * bytecode/CodeBlock.cpp:
        (JSC::CodeBlock::createActivation):
        * bytecode/StructureStubInfo.cpp:
        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::generate):
        (JSC::BytecodeGenerator::BytecodeGenerator):
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionCall):
        (JSC::BytecodeGenerator::emitJumpIfNotFunctionApply):
        * bytecompiler/BytecodeGenerator.h:
        * debugger/Debugger.cpp:
        (JSC::Recompiler::operator()):
        * debugger/DebuggerCallFrame.h:
        (JSC::DebuggerCallFrame::scopeChain):
        * interpreter/CachedCall.h:
        (JSC::CachedCall::CachedCall):
        * interpreter/CallFrame.h:
        * interpreter/Interpreter.cpp:
        (JSC::depth):
        (JSC::Interpreter::unwindCallFrame):
        (JSC::Interpreter::throwException):
        (JSC::Interpreter::execute):
        (JSC::Interpreter::executeCall):
        (JSC::Interpreter::executeConstruct):
        (JSC::Interpreter::privateExecute):
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::compileOpCall):
        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCallInitializeCallFrame):
        (JSC::JIT::emit_op_ret):
        (JSC::JIT::emit_op_ret_object_or_this):
        (JSC::JIT::compileOpCall):
        * jit/JITOpcodes.cpp:
        (JSC::JIT::emit_op_end):
        (JSC::JIT::emit_op_ret):
        (JSC::JIT::emit_op_ret_object_or_this):
        * jit/JITOpcodes32_64.cpp:
        (JSC::JIT::emit_op_end):
        * jit/JITStubs.cpp:
        (JSC::DEFINE_STUB_FUNCTION):
        * jit/JITStubs.h:
        * runtime/ArgList.cpp:
        * runtime/Completion.cpp:
        (JSC::evaluate):
        * runtime/Completion.h:
        * runtime/DateConversion.cpp:
        * runtime/Executable.cpp:
        (JSC::EvalExecutable::compileInternal):
        (JSC::ProgramExecutable::compileInternal):
        (JSC::FunctionExecutable::compileForCallInternal):
        (JSC::FunctionExecutable::compileForConstructInternal):
        * runtime/FunctionConstructor.cpp:
        (JSC::constructFunction):
        * runtime/GCActivityCallbackCF.cpp:
        * runtime/Identifier.cpp:
        * runtime/JSCell.h:
        * runtime/JSChunk.cpp: Added.
        * runtime/JSChunk.h: Added.
        * runtime/JSFunction.cpp:
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::markChildren):
        (JSC::JSFunction::getCallData):
        (JSC::JSFunction::getOwnPropertySlot):
        (JSC::JSFunction::getConstructData):
        * runtime/JSFunction.h:
        (JSC::JSFunction::scope):
        (JSC::JSFunction::setScope):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::init):
        (JSC::JSGlobalObject::markChildren):
        * runtime/JSGlobalObject.h:
        (JSC::JSGlobalObject::JSGlobalObjectData::JSGlobalObjectData):
        (JSC::JSGlobalObject::globalScopeChain):
        * runtime/JSGlobalObjectFunctions.cpp:
        (JSC::globalFuncEval):
        * runtime/JSLock.cpp:
        * runtime/JSNumberCell.cpp:
        * runtime/JSZombie.cpp:
        * runtime/MarkedBlock.cpp:
        * runtime/MarkedSpace.cpp:
        * runtime/PropertyNameArray.cpp:
        * runtime/ScopeChain.cpp:
        (JSC::ScopeChainNode::print):
        (JSC::ScopeChainNode::localDepth):
        (JSC::ScopeChainNode::markChildren):
        * runtime/ScopeChain.h:
        (JSC::ScopeChainNode::ScopeChainNode):
        (JSC::ScopeChainNode::createStructure):
        (JSC::ScopeChainNode::push):
        (JSC::ScopeChainNode::pop):
        (JSC::ScopeChainIterator::ScopeChainIterator):
        (JSC::ScopeChainIterator::operator*):
        (JSC::ScopeChainIterator::operator->):
        (JSC::ScopeChainIterator::operator++):
        (JSC::ScopeChainNode::begin):
        (JSC::ScopeChainNode::end):
        (JSC::ExecState::globalData):
        (JSC::ExecState::lexicalGlobalObject):
        (JSC::ExecState::globalThisValue):
        * runtime/ScopeChainMark.h:
        * wtf/DateMath.cpp:

2011-02-27  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Implement WTF::randomNumber in terms of WTF::cryptographicallyRandomNumber when possible
        https://bugs.webkit.org/show_bug.cgi?id=55326

        Currently, randomNumber does a bunch of platform-specific work that to
        get a cryptographic randomness when available.  Instead, we should use
        cryptographicallyRandomNumber, which abstracts this work.
        Unfortunately, we can't remove all of the WTF::randomNumber
        implementation because not every port has access to cryptographically
        random numbers.

        * wtf/RandomNumber.cpp:
        (WTF::randomNumber):

2011-02-27  Benjamin Poulain  <ikipou@gmail.com>

        Reviewed by Darin Adler.

        Eliminate DeprecatedPtrList from RenderBlock
        https://bugs.webkit.org/show_bug.cgi?id=54972

        Add methods find() and contains() using an adaptor to ListHashSet.
        Those method are like the one of HashSet, they allow to find objects
        based on a different key than the one used to define the set.

        Add convenience methods for direct access to the head and tail of the list.
        Those methods are providing similar API/behavior as Vector.

        * wtf/ListHashSet.h:
        (WTF::::first):
        (WTF::::last):
        (WTF::::removeLast):
        (WTF::ListHashSetTranslatorAdapter::hash):
        (WTF::ListHashSetTranslatorAdapter::equal):
        (WTF::::find):
        (WTF::::contains):

2011-02-26  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Andreas Kling.

        Add support for DragonFly BSD
        https://bugs.webkit.org/show_bug.cgi?id=54407

        DragonFly BSD is based on FreeBSD, so handle it like FreeBSD.

        * wtf/Platform.h:

2011-02-26  Adam Barth  <abarth@webkit.org>

        Reviewed by Dimitri Glazkov.

        JavaScriptCore should use the xcconfig file instead of importing that information into GYP
        https://bugs.webkit.org/show_bug.cgi?id=55282

        Technically, this breaks the build because I had removed one of the
        warnings in this config file, but this change seems like an
        improvement.

        * gyp/JavaScriptCore.gyp:

2011-02-26  Thouraya ANDOLSI  <thouraya.andolsi@st.com>

        Reviewed by Nikolas Zimmermann.

        SH4 JIT SUPPORT
        https://bugs.webkit.org/show_bug.cgi?id=44329

        Provide an ExecutableAllocater::cacheFlush() implementation for
        Linux/SH4.

        * jit/ExecutableAllocator.h:
        (JSC::ExecutableAllocator::cacheFlush):

2011-02-25  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r79627.
        http://trac.webkit.org/changeset/79627
        https://bugs.webkit.org/show_bug.cgi?id=55274

        broke worker tests (Requested by olliej on #webkit).

        * JavaScriptCore.exp:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:
        * runtime/Heap.cpp:
        (JSC::Heap::allocate):
        * runtime/Heap.h:
        * runtime/JSCell.h:
        (JSC::JSCell::JSCell::operator new):
        (JSC::JSCell::MarkedSpace::sizeClassFor):
        (JSC::JSCell::MarkedSpace::allocate):
        * runtime/MarkedBlock.h:
        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::SizeClass::SizeClass):

2011-02-25  Michael Saboff  <msaboff@apple.com>

        Reviewed by Darin Adler.

        Leak in JSParser::Scope of ScopeLabelInfo Vector
        https://bugs.webkit.org/show_bug.cgi?id=55249

        Changed m_labels to be an OwnPtr<>.  Added VectorTraits
        and Scope copy constructor to support this change.

        * parser/JSParser.cpp:
        (JSC::JSParser::Scope::~Scope):

2011-02-25  Fumitoshi Ukai  <ukai@chromium.org>

        Reviewed by Adam Barth.

        WebSocket uses insecure random numbers
        https://bugs.webkit.org/show_bug.cgi?id=54714

        * JavaScriptCore.exp: Export WTF::cryptographicallyRandomNumber()

2011-02-25  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Adam Roben.

        Move timeBeginPeriod into OS(WINDOWS) section
        https://bugs.webkit.org/show_bug.cgi?id=55247

        * jsc.cpp:
        (main): timeBeginPeriod is available on all Windows versions and not compiler specific.

2011-02-25  Patrick Gansterer  <paroga@webkit.org>

        Unreviewed WinCE build fix for r79695.

        * jsc.cpp:
        (main): SetErrorMode isn't available on WinCE.

2011-02-25  Adam Roben  <aroben@apple.com>

        Work around Cygwin's crash-suppression behavior

        Cygwin calls ::SetErrorMode(SEM_FAILCRITICALERRORS), which any processes it launches will
        inherit. This is bad for testing/debugging, as it causes the post-mortem debugger not to be
        invoked. (Cygwin does this because it makes crashes more UNIX-y.) We reset the error mode
        when our test apps launch to work around Cygwin's behavior.

        Fixes <http://webkit.org/b/55222> Test apps crash silently (without invoking post-mortem
        debugger) when launched from Cygwin 1.7

        Reviewed by Darin Adler.

        * API/tests/testapi.c: Added a now-needed #include.
        (main):
        * jsc.cpp:
        (main):
        Call ::SetErrorMode(0) to undo Cygwin's folly.

        * JavaScriptCore.vcproj/testapi/testapiCommon.vsprops: Define NOMINMAX like many of our
        other projects do so that windows.h won't define min/max macros that interfere with
        std::numeric_limits<T>::min/max.

2011-02-24  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Add GYP project for JavaScriptCore
        https://bugs.webkit.org/show_bug.cgi?id=55027

        Again, this GYP files is very rough, but it succeeds in building
        JavaScriptCore.  There's a lot more work to do here, especially in the
        area of sharing with JavaScriptGlue.gyp.  This patch is more of a
        checkpoint so that other folks can help out if they wish.

        * gyp: Added.
        * gyp/JavaScriptCore.gyp: Added.
        * gyp/generate-derived-sources.sh: Added.

2011-02-24  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Add missing files to JavaScriptCore.gypi
        https://bugs.webkit.org/show_bug.cgi?id=55193

        I forgot to add mm files in my previous patch.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:
        * JavaScriptCore.gypi:

2011-02-24  Adam Barth  <abarth@webkit.org>

        Reviewed by Eric Seidel.

        Remove unused parameter name in GCActivityCallback.cpp
        https://bugs.webkit.org/show_bug.cgi?id=55194

        This change is not strictly required for the GYP-based build system,
        but I noticed this error when working on the new build system.

        * runtime/GCActivityCallback.cpp:
        (JSC::DefaultGCActivityCallback::DefaultGCActivityCallback):

2011-02-24  James Robinson  <jamesr@chromium.org>

        Reviewed by Darin Fisher.

        Add a USE() macro to control use of the built-in UTF8 codec
        https://bugs.webkit.org/show_bug.cgi?id=55189

        Defaults USE(BUILTIN_UTF8_CODEC) to true for all platforms except chromium, which controls the flag via features.gypi.

        * wtf/Platform.h:

2011-02-24  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        Variable-sized allocation (but still capped at 64 bytes)
        https://bugs.webkit.org/show_bug.cgi?id=55159
        
        SunSpider reports no change.

        * JavaScriptCore.exp: Some day, I hope not to have to edit this file.

        * runtime/Heap.cpp:
        (JSC::Heap::allocateSlowCase): Split allocation into a fast and slow
        case, so the fast case can inline size class selection and turn it into
        a compile-time constant.
        
        Changed the collect-on-every allocation debugging switch to collect only
        on every slow allocation, so you can still flip the switch without
        recompiling the world. This may also be preferable for debugging purposes,
        since collecting after every single allocation can be unusably slow,
        and can mask problems by running destructors early.

        * runtime/Heap.h: Ditto.

        * runtime/JSCell.h:
        (JSC::JSCell::MarkedSpace::sizeClassFor):
        (JSC::JSCell::Heap::allocate):
        (JSC::JSCell::JSCell::operator new): The inlining mentioned above.

        * runtime/MarkedBlock.h: Dropped the block size from 256KB to 16KB. With
        multiple size classes, allocating a full 256KB for the first allocation
        in a given class can be pathologically wasteful. (8KB, or 4KB Mac and
        8KB Windows, would be even better, but that seems to be a peformance
        regression for now.)
        
        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::reset): There's more than one size class now, and its
        cell size is not constant.

        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::SizeClass::SizeClass): Ditto.

2011-02-23  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Make WeakGCMap use new handle infrastructure
        https://bugs.webkit.org/show_bug.cgi?id=55100

        Remove old WeakGCMap implementation and move over to new handle
        based logic.

        This has a number of benefits, most notably it makes a WeakGCMap
        always reflect the true state of the world by as all entries are
        removed at the first gc cycle that makes them dead.  This allows
        us to get rid of code in a wide variety of objects where the only
        purpose was to remove themselves from maps.

        It also means that we no longer need to have special "unchecked"
        versions of any functions on WeakGCMap.  Alas in order to maintain
        compatibility with the JSWeakObjectMapClear API it is still
        necessary to have an api that resembles uncheckedRemove, this is
        now deprecatedRemove and will be dealt with in a later patch.

        In order to get correct semantics in WeakGCMap we need more
        contextual information in the finalizer, so we've added an
        abstract class based finaliser and a context parameter to the
        calls.

        The new an improved WeakGCMap also results in sigificantly more
        churn in the weak handle lists so exposed some potential problems
        during the post mark phase which have been rectified as well.

        * API/JSWeakObjectMapRefPrivate.cpp:
        * API/JSWeakObjectMapRefPrivate.h:
        * runtime/Heap.cpp:
        (JSC::Heap::globalObjectCount):
        (JSC::Heap::protectedGlobalObjectCount):
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * runtime/JSGlobalData.h:
        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::~JSGlobalObject):
        (JSC::JSGlobalObject::init):
        * runtime/WeakGCMap.h:
        (JSC::WeakGCMap::iterator::iterator):
        (JSC::WeakGCMap::iterator::get):
        (JSC::WeakGCMap::iterator::getSlot):
        (JSC::WeakGCMap::iterator::operator++):
        (JSC::WeakGCMap::iterator::operator==):
        (JSC::WeakGCMap::iterator::operator!=):
        (JSC::WeakGCMap::WeakGCMap):
        (JSC::WeakGCMap::isEmpty):
        (JSC::WeakGCMap::clear):
        (JSC::WeakGCMap::get):
        (JSC::WeakGCMap::getSlot):
        (JSC::WeakGCMap::set):
        (JSC::WeakGCMap::take):
        (JSC::WeakGCMap::size):
        (JSC::WeakGCMap::deprecatedRemove):
        (JSC::WeakGCMap::begin):
        (JSC::WeakGCMap::end):
        (JSC::WeakGCMap::~WeakGCMap):
        (JSC::WeakGCMap::finalize):
        * runtime/WeakGCPtr.h:
        (JSC::WeakGCPtr::WeakGCPtr):
        (JSC::WeakGCPtr::set):

2011-02-24  Oliver Hunt  <oliver@apple.com>

        Reviewed by Gavin Barraclough.

        Make weaklist processing deal with weak handles being removed during the iteration
        https://bugs.webkit.org/show_bug.cgi?id=55105

        It is possible for the handle heap to end up in a broken state if
        a handle's finalizer removes either the current or next handle
        to be visited during the post-gc cleanup.  This patch removes that
        problem by allowing the deallocate(Node*) routine to update the
        iterator if it is called during finalization.

        * collector/handles/HandleHeap.cpp:
        (JSC::HandleHeap::HandleHeap):
        (JSC::HandleHeap::updateAfterMark):
        (JSC::HandleHeap::clearWeakPointers):
        (JSC::HandleHeap::writeBarrier):
        (JSC::HandleHeap::protectedGlobalObjectCount):
        * collector/handles/HandleHeap.h:
        (JSC::Finalizer::~Finalizer):
        (JSC::HandleHeap::getFinalizer):
        (JSC::HandleHeap::deallocate):
        (JSC::HandleHeap::makeWeak):
        (JSC::HandleHeap::makeSelfDestroying):
        (JSC::HandleHeap::Node::Node):
        (JSC::HandleHeap::Node::setFinalizer):
        (JSC::HandleHeap::Node::finalizer):
        (JSC::HandleHeap::Node::finalizerContext):
        * interpreter/RegisterFile.cpp:
        (JSC::RegisterFile::setGlobalObject):
        (JSC::GlobalObjectNotifier::finalize):
        (JSC::RegisterFile::globalObjectCollectedNotifier):
        * interpreter/RegisterFile.h:
        (JSC::RegisterFile::RegisterFile):
        * runtime/Heap.cpp:
        (JSC::Heap::destroy):
        * runtime/WeakGCPtr.h:
        (JSC::WeakGCPtr::WeakGCPtr):
        (JSC::WeakGCPtr::set):

2011-02-24  Michael Saboff  <msaboff@apple.com>

        Reviewed by Oliver Hunt.

        PatternAlternative leaked in YarrPatternConstructor::atomParenthesesEnd()
        https://bugs.webkit.org/show_bug.cgi?id=55156

        Added code to delete unneeded PatternAlternative after it is removed
        from m_alternatives Vector.

        * yarr/YarrPattern.cpp:
        (JSC::Yarr::YarrPatternConstructor::atomParenthesesEnd):

2011-02-24  Eric Seidel  <eric@webkit.org>

        Reviewed by Anders Carlsson.

        VectorBuffer should not call malloc(0)
        https://bugs.webkit.org/show_bug.cgi?id=55091

        Turns out the malloc() call which was so hot in:
        https://bugs.webkit.org/show_bug.cgi?id=55005
        was actually just malloc(0).

        We shouldn't be calling malloc(0) anyway, since there is no need to
        and it might actually do work on some systems.
        I believe on Mac it ends up taking the standard spinlocks (expensive)
        and the code on Brew actually does a malloc(1) instead.  Neither is desirable.

        * wtf/Vector.h:
        (WTF::VectorBufferBase::allocateBuffer):
        (WTF::VectorBufferBase::tryAllocateBuffer):

2011-02-24  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Darin Adler.

        Remove obsolete PLATFORM(CI)
        https://bugs.webkit.org/show_bug.cgi?id=55082

        * wtf/Platform.h:

2011-02-24  Martin Robinson  <mrobinson@igalia.com>

        Reviewed by Xan Lopez.

        [GTK] Remove the GFile GOwnPtr specialization
        https://bugs.webkit.org/show_bug.cgi?id=55154

        Remove the GFile specialization of GOwnPtr. It's sufficient to use GRefPtr
        to track GFiles since they are just regular reference-counted GObjects.

        * wtf/gobject/GOwnPtr.cpp: Remove GFile specialization.
        * wtf/gobject/GOwnPtr.h: Ditto.

2011-02-24  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Eric Seidel.

        Rename PLATFORM(SKIA) to USE(SKIA)
        https://bugs.webkit.org/show_bug.cgi?id=55090

        * wtf/Platform.h:

2011-02-24  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Alexey Proskuryakov.

        Remove pthreads dependecy for JSLock
        https://bugs.webkit.org/show_bug.cgi?id=54832

        JSLock is only needed to support an obsolete execution model where JavaScriptCore
        automatically protected against concurrent access from multiple threads.
        So it's safe to disable it on non-mac platforms where we don't have native pthreads.

        * runtime/JSLock.cpp:

2011-02-24  Chao-ying Fu  <fu@mips.com>

        Reviewed by Eric Seidel.

        Fix MIPS build with new patchOffsetPut/GetByIdPropertyMapOffset1/2 values
        https://bugs.webkit.org/show_bug.cgi?id=54997

        * jit/JIT.h:
        * jit/JITStubs.cpp:
        (JSC::JITThunks::JITThunks):

2011-02-24  Andras Becsi  <abecsi@webkit.org>

        Reviewed by Laszlo Gombos.

        [Qt] MinGW build fails to link
        https://bugs.webkit.org/show_bug.cgi?id=55050

        Prepend the libraries of subcomponents instead of appending them
        to fix the library order according to the dependency of the libraries

        * JavaScriptCore.pri: rename addJavaScriptCore to prependJavaScriptCore
        * jsc.pro: ditto

2011-02-24  Eric Seidel  <eric@webkit.org>

        Reviewed by Adam Barth.

        Deque<T> should support inline capacity
        https://bugs.webkit.org/show_bug.cgi?id=55032

        The title says it all.  There are currently no places
        which use this code yet, however it's been tested in conjunction
        with code for bug 55005.

        This also adds an ASSERT that capacity is never 1.  If you were able
        to set the capacity equal to 1, the Deque would just get confused
        and happily append your item but still think it had size 0.

        * wtf/Deque.h:
        (WTF::DequeIterator::DequeIterator):
        (WTF::DequeConstIterator::DequeConstIterator):
        (WTF::DequeReverseIterator::DequeReverseIterator):
        (WTF::DequeConstReverseIterator::DequeConstReverseIterator):
        (WTF::::checkValidity):
        (WTF::::checkIndexValidity):
        (WTF::::invalidateIterators):
        (WTF::::Deque):
        (WTF::deleteAllValues):
        (WTF::::operator):
        (WTF::::destroyAll):
        (WTF::::~Deque):
        (WTF::::swap):
        (WTF::::clear):
        (WTF::::findIf):
        (WTF::::expandCapacityIfNeeded):
        (WTF::::expandCapacity):
        (WTF::::takeFirst):
        (WTF::::append):
        (WTF::::prepend):
        (WTF::::removeFirst):
        (WTF::::remove):
        (WTF::::addToIteratorsList):
        (WTF::::removeFromIteratorsList):
        (WTF::::DequeIteratorBase):
        (WTF::::~DequeIteratorBase):
        (WTF::::isEqual):
        (WTF::::increment):
        (WTF::::decrement):
        (WTF::::after):
        (WTF::::before):
        * wtf/Vector.h:

2011-02-22  Adam Barth  <abarth@webkit.org>

        Reviewed by Ojan Vafai. 

        Add missing files to JavaScriptCore.gypi 
        https://bugs.webkit.org/show_bug.cgi?id=55020 

        gypi files are supposed to list every file under the sun.  This patch 
        adds some missing files and sorts the rest. 

        * JavaScriptCore.gypi: 

2011-02-23  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.

        Refactored MarkedSpace to operate in terms of size classes
        https://bugs.webkit.org/show_bug.cgi?id=55106
        
        SunSpider reports no change.

        * runtime/JSCell.h:
        (JSC::JSCell::MarkedSpace::sizeClassFor):
        (JSC::JSCell::MarkedSpace::allocate): Delegate allocation based on size
        class. Since these functions are inline, the compiler can constant fold
        them.

        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::cellSize):
        (JSC::MarkedBlock::size): Factored out a cellSize() helper.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::allocateFromSizeClass):
        (JSC::MarkedSpace::shrink):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::SizeClass::SizeClass):
        (JSC::MarkedSpace::SizeClass::reset): Changed to operate in terms of
        abstract SizeClass objects, which are independent linked lists of blocks
        of a certain size class, instead of a single m_heap object.

2011-02-23  Adam Barth  <abarth@webkit.org>

        Reviewed by James Robinson.

        [Chromium] Use WebKitClient for OSRandomSource instead of trying to talk to the file system in the sandbox
        https://bugs.webkit.org/show_bug.cgi?id=55093

        Exclude OSRandomSource.cpp from the Chromium build.  This function is
        implemented in WebKit/chromium/src instead.

        * JavaScriptCore.gyp/JavaScriptCore.gyp:

2011-02-23  Oliver Hunt  <oliver@apple.com>

        Roll out r64156 as it introduces incorrect behaviour.

        * runtime/JSByteArray.h:
        (JSC::JSByteArray::setIndex):

2011-02-23  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Moved the "nextAtom" allocation pointer into MarkedBlock for better encapsulation
        https://bugs.webkit.org/show_bug.cgi?id=55079
        
        SunSpider reports no change.

        * runtime/Heap.cpp:
        (JSC::Heap::reset): Moved Zombie sweeping here, up from MarkedSpace,
        since we want Heap to logically control MarkedSpace. MarkedSpace should
        never choose to sweep itself.

        * runtime/JSCell.h:
        (JSC::JSCell::MarkedBlock::allocate): Updated for nextAtom becoming a
        member of MarkedBlock. No need to reset nextAtom to firstAtom() when
        we reach the end of a block, since there's now an explicit reset pass
        during GC.

        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::reset): Added the nextAtom data member, and reordered
        some data members to improve cache locality.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::allocate):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h:
        (JSC::CollectorHeap::CollectorHeap): Removed nextAtom, and added an
        explicit reset pass.

2011-02-23  James Robinson  <jamesr@chromium.org>

        Unreviewed, rolling out r79428.
        http://trac.webkit.org/changeset/79428
        https://bugs.webkit.org/show_bug.cgi?id=54714

        Does not work in the Chromium sandbox

        * JavaScriptCore.exp:

2011-02-23  Adam Roben  <aroben@apple.com>

        Fix an off-by-one error in JSC::appendSourceToError

        Looks like this bug has been around since the code was first added in r35245.

        Fixes <http://webkit.org/b/55052> <rdar://problem/9043512> Crash in JSC::appendSourceToError
        when running fast/dom/objc-big-method-name.html on Windows with full page heap enabled

        Reviewed by Darin Adler.

        * interpreter/Interpreter.cpp:
        (JSC::appendSourceToError): When trimming whitespace off the end of the string, examine the
        character at stop-1 rather than at stop. At this point in the code, stop represents the
        index just past the end of the characters we care about, and can even be just past the end
        of the entire data buffer.

2011-02-23  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Darin Adler.
        
        Rolled back in r79367 with SnowLeopard Release bot crash fixed.
        https://bugs.webkit.org/show_bug.cgi?id=54999
        
        The crash was caused by failure to update the "nextBlock" pointer when
        removing a block from the list while shrinking. The fix is to update the
        "nextBlock" pointer.
        
        This crash was very rare because it only happened in cases where the very
        first block in the heap contained no marked cells.

2011-02-23  Dan Bernstein  <mitz@apple.com>

        Reviewed by Gavin Barraclough.

        Include frame numbers in backtraces.
        https://bugs.webkit.org/show_bug.cgi?id=55060

        * wtf/Assertions.cpp:

2011-02-23  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Gavin Barraclough.

        latest jsc for armv7 crashes in sunspider tests
        https://bugs.webkit.org/show_bug.cgi?id=54667

        Update JIT offset values in ARMv7 after r78732. Fixes crashes in
        SunSpider and JavaScript tests.

        * jit/JIT.h: update values.

2011-02-23  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r79418.
        http://trac.webkit.org/changeset/79418
        https://bugs.webkit.org/show_bug.cgi?id=55043

        "breaks shlib linux build" (Requested by morrita on #webkit).

        * JavaScriptCore.gyp/JavaScriptCore.gyp:
        * JavaScriptCore.gypi:

2011-02-23  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Alexey Proskuryakov.

        Use DEFINE_STATIC_LOCAL for ignoreSetMutex in Structure.cpp
        https://bugs.webkit.org/show_bug.cgi?id=54831

        * runtime/InitializeThreading.cpp:
        (JSC::initializeThreadingOnce):
        * runtime/Structure.cpp:
        (JSC::ignoreSetMutex):
        (JSC::Structure::Structure):
        (JSC::Structure::~Structure):
        (JSC::Structure::initializeThreading):
        * runtime/Structure.h:

2011-02-23  Patrick Gansterer  <paroga@webkit.org>

        Reviewed by Darin Adler.

        Rename PLATFORM(CF) to USE(CF)
        https://bugs.webkit.org/show_bug.cgi?id=53540

        * runtime/DatePrototype.cpp:
        * runtime/GCActivityCallbackCF.cpp:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::JSGlobalData):
        * wtf/CurrentTime.cpp:
        * wtf/Platform.h:
        * wtf/text/AtomicString.h:
        * wtf/text/StringImpl.h:
        (WTF::StringImpl::computeHash):
        * wtf/text/WTFString.h:
        * wtf/unicode/icu/CollatorICU.cpp:
        (WTF::Collator::userDefault):

2011-02-23  Fumitoshi Ukai  <ukai@chromium.org>

        Unreviewed build fix for Windows.

        WebSocket uses insecure random numbers
        https://bugs.webkit.org/show_bug.cgi?id=54714

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Export WTF::cryptographicallyRandomNumber()

2011-02-23  Fumitoshi Ukai  <ukai@chromium.org>

        Reviewed by Adam Barth.

        WebSocket uses insecure random numbers
        https://bugs.webkit.org/show_bug.cgi?id=54714

        * JavaScriptCore.exp: Export WTF::cryptographicallyRandomNumber()

2011-02-22  Adam Barth  <abarth@webkit.org>

        Reviewed by Ojan Vafai.

        Add missing files to JavaScriptCore.gypi
        https://bugs.webkit.org/show_bug.cgi?id=55020

        gypi files are supposed to list every file under the sun.  This patch
        adds some missing files and sorts the rest.

        * JavaScriptCore.gypi:

2011-02-22  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r79367.
        http://trac.webkit.org/changeset/79367
        https://bugs.webkit.org/show_bug.cgi?id=55012

        all layout tests are crashing on Snow Leopard (Requested by
        rniwa on #webkit).

        * GNUmakefile.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * runtime/MarkedBlock.h:
        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::destroy):
        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::freeBlock):
        (JSC::MarkedSpace::allocate):
        (JSC::MarkedSpace::shrink):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h:
        (JSC::CollectorHeap::collectorBlock):
        * wtf/CMakeLists.txt:
        * wtf/DoublyLinkedList.h: Removed.

2011-02-22  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Manage MarkedBlocks in a linked list instead of a vector, so arbitrary removal is O(1)
        https://bugs.webkit.org/show_bug.cgi?id=54999
        
        SunSpider reports no change.

        * GNUmakefile.am:
        * JavaScriptCore.gypi:
        * JavaScriptCore.vcproj/WTF/WTF.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj: So many build systems, so little time.
        * wtf/CMakeLists.txt:

        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::setPrev):
        (JSC::MarkedBlock::setNext):
        (JSC::MarkedBlock::prev):
        (JSC::MarkedBlock::next): Added linked list data members and accessors.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::destroy):
        (JSC::MarkedSpace::allocateBlock): Stop using vector, since it doesn't exist anymore.

        (JSC::MarkedSpace::freeBlocks): New helper function for updating relevant
        data structures when freeing blocks.

        (JSC::MarkedSpace::allocate): Updated for nextBlock being a pointer and
        not a vector index.

        (JSC::MarkedSpace::shrink): Construct a temporary list of empties and
        then free them, to avoid modifying our hash table while iterating it.
        This wasn't a concern before because we were using indirect array
        indexing, not direct pointer indexing.

        (JSC::MarkedSpace::reset): Updated for nextBlock being a pointer and
        not a vector index.

        * runtime/MarkedSpace.h:
        (JSC::CollectorHeap::CollectorHeap): Changed data type from vector to linked list.

        * wtf/DoublyLinkedList.h: Added. New linked list class.
        (WTF::::DoublyLinkedList):
        (WTF::::isEmpty):
        (WTF::::head):
        (WTF::::append):
        (WTF::::remove):

2011-02-22  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-02-22  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 54988 - Re-create StructureTransitionTable class, encapsulate transition table

        The Structure class keeps a table of transitions to derived Structure types. Since
        this table commonly contains a single entry we employ an optimization where instead
        of holding a map, we may hold a pointer directly to a single instance of the mapped
        type. We use an additional bit of data to flag whether the pointer is currently
        pointing to a table of transitions, or a singleton transition. Previously we had
        commonly used a pattern of storing data in the low bits of pointers, but had moved
        away from this since it causes false leaks to be reported by the leaks tool. However
        in this case, the entries in the map are weak links - this pointer will never be
        responsible for keeping an object alive.  As such we can use this approach provided
        that the bit is set when a table is not in use (otherwise the table would appear to
        be leaked).

        Additionally, the transition table currently allows two entries to exist for a given
        key - one specialized to a particular value, and one not specialized. This is
        unnecessary, wasteful, and a little inconsistent. (If you create an entry for a
        specialized value, then a non-specialized entry, both will exist.  If you create an
        entry for a non-specialized value, then try to create a specialized entry, only a
        non-specialized form will be allowed.)

        This shows a small progression on v8.

        * JavaScriptCore.exp:
        * runtime/JSObject.h:
        (JSC::JSObject::putDirectInternal):
        * runtime/Structure.cpp:
        (JSC::StructureTransitionTable::contains):
        (JSC::StructureTransitionTable::get):
        (JSC::StructureTransitionTable::remove):
        (JSC::StructureTransitionTable::add):
        (JSC::Structure::dumpStatistics):
        (JSC::Structure::Structure):
        (JSC::Structure::~Structure):
        (JSC::Structure::addPropertyTransitionToExistingStructure):
        (JSC::Structure::addPropertyTransition):
        * runtime/Structure.h:
        (JSC::Structure::get):
        * runtime/StructureTransitionTable.h:
        (JSC::StructureTransitionTable::Hash::hash):
        (JSC::StructureTransitionTable::Hash::equal):
        (JSC::StructureTransitionTable::HashTraits::emptyValue):
        (JSC::StructureTransitionTable::HashTraits::constructDeletedValue):
        (JSC::StructureTransitionTable::HashTraits::isDeletedValue):
        (JSC::StructureTransitionTable::StructureTransitionTable):
        (JSC::StructureTransitionTable::~StructureTransitionTable):
        (JSC::StructureTransitionTable::isUsingSingleSlot):
        (JSC::StructureTransitionTable::map):
        (JSC::StructureTransitionTable::setMap):
        (JSC::StructureTransitionTable::singleTransition):
        (JSC::StructureTransitionTable::setSingleTransition):

2011-02-22  Andras Becsi  <abecsi@webkit.org>

        Reviewed by Laszlo Gombos.

        [Qt] Redesign the build system
        https://bugs.webkit.org/show_bug.cgi?id=51339

        Part 2.

        Build WebCore as a static library, compile the WebKit API and WebKit2 API
        in a final step and link to WebKit2, WebCore and JSC libraries to fix
        linking issues resulting from stripped away symbols.

        * JavaScriptCore.pri: Remove the workaround.

2011-02-21  Adam Roben  <aroben@apple.com>

        Fix linker warning on Windows

        r79135 tried to export JSObject::s_info by adding it to JavaScriptCore.def. This is the
        obvious way (since it's how we export functions), but unfortunately it doesn't work correct.
        r79222 made us export it the right way (using the JS_EXPORTDATA macro), but forgot to remove
        it from JavaScriptCore.def. This caused us to get linker warnings about exporting the symbol
        multiple times.

        Rubber-stamped by Anders Carlsson.

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Removed JSObject::s_info.

2011-02-21  Brian Weinstein  <bweinstein@apple.com>

        Reviewed by Adam Roben.

        WebResourceCacheManager should be responsible for managing the CFURLCache as well
        as the WebCore memory cache.
        https://bugs.webkit.org/show_bug.cgi?id=54886
        Part of <rdar://problem/8971738>

        Add a new use flag for using the CFURLCache.

        * wtf/Platform.h:

2011-02-21  Xan Lopez  <xlopez@igalia.com>

        Reviewed by Gavin Barraclough.

        Use ASSERT_JIT_OFFSET in JITPropertyAccess32_64.cpp
        https://bugs.webkit.org/show_bug.cgi?id=54901

        * jit/JIT.h: swap actual and expected values in message, they were
        reversed.
        * jit/JITCall32_64.cpp:
        (JSC::JIT::compileOpCall): use ASSERT_JIT_OFFSET instead of
        a simple ASSERT.
        * jit/JITPropertyAccess32_64.cpp:
        (JSC::JIT::emit_op_method_check): ditto.
        (JSC::JIT::compileGetByIdHotPath): ditto.
        (JSC::JIT::compileGetByIdSlowCase): ditto.
        (JSC::JIT::emit_op_put_by_id): ditto.

2011-02-21  Gavin Barraclough  <barraclough@apple.com>

        Ruber stamped by Sam Weinig

        Bug 54899 - Math.LOG10E should be 0.4342944819032518
        This value is quoted in section 15.8.1.5 of the spec.

        * runtime/MathObject.cpp:
        (JSC::MathObject::MathObject):

2011-02-21  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 54894 - Make inheritance structure described by ClassInfo match C++ class hierarchy.

        The ClassInfo objects describe an inheritance hierarchy, with each ClassInfo instance
        containing a pointer to its parent class. These links should reflect the inheritance
        hierarchy of C++ classes below JSObject. For the large part it does, but in some cases
        entries in the C++ hierarchy are skipped over. This presently likely doesn't matter,
        since intervening C++ classes may not have ClassInfo - but would be a potential bug
        were ClassInfo were to be added.

        * API/JSCallbackConstructor.cpp:
        * API/JSCallbackFunction.cpp:
        * API/JSCallbackObjectFunctions.h:
        * runtime/Arguments.h:
        * runtime/ArrayPrototype.cpp:
        * runtime/BooleanObject.cpp:
        * runtime/DateInstance.cpp:
        * runtime/DatePrototype.cpp:
        * runtime/ErrorInstance.cpp:
        * runtime/InternalFunction.cpp:
        * runtime/JSActivation.cpp:
        * runtime/JSArray.cpp:
        * runtime/JSFunction.cpp:
        * runtime/JSONObject.cpp:
        * runtime/JSObject.h:
        * runtime/JSZombie.h:
        * runtime/MathObject.cpp:
        * runtime/NativeErrorConstructor.cpp:
        * runtime/NumberConstructor.cpp:
        * runtime/NumberObject.cpp:
        * runtime/RegExpConstructor.cpp:
        * runtime/RegExpObject.cpp:
        * runtime/StringObject.cpp:
        * runtime/StringPrototype.cpp:

2011-02-21  Adam Roben  <aroben@apple.com>

        Export JSObject::s_info from JavaScriptCore.dll

        This matches what we do for all other ClassInfo objects that WebCore needs access to.

        Fixes <http://webkit.org/b/54881> REGRESSION (r79132): Lots of tests crashing in
        JSCell::inherits on Windows

        Reviewed by Sam Weinig.

        * runtime/JSObject.h: Added JS_EXPORTDATA to s_info.

2011-02-21  Kristian Amlie  <kristian.amlie@nokia.com>

        Reviewed by Andreas Kling.

        Switched to compiler based detection, where the error actually is.

        It is not the platform that needs the workaround, it is the compiler.

        QtWebKit fails to compile on Windows XP with msvc-2008
        https://bugs.webkit.org/show_bug.cgi?id=54746

        * bytecode/CodeBlock.h:
        * runtime/RegExpObject.h:

2011-02-20  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Oliver Hunt.

        https://bugs.webkit.org/show_bug.cgi?id=54839
        Remove PrototypeFunction, NativeFunctionWrapper, and GlobalEvalFunction.

        Historically, Native functions used to be represented by PrototypeFunctions, however
        since introducing call optimizations to the JIT this has used JSFunctions for host
        calls too. At the point this change was made, the interpreter continued to use
        PrototypeFunctions, however since fallback from the JIT to interpreter was introduced
        the interpreter has had to be able to run using host functions represented using
        JSFunctions - leading to an unnecessary and redundant divergence in behaviour between 
        interpreter only builds, and situations where the JIT has fallen back to interpreting.

        NativeFunctionWrapper only existed to select between PrototypeFunction and JSFunction
        for wrappers for host functions, and as such can also be removed.

        GlobalEvalFunction is a redundant wrapper that happens to be derived from
        PrototypeFunction. It existed to hold a reference to the global object - but since all
        functions how derive from JSObjectWithGlobalObject, this no longer requires an
        additional class to provide this functionality.

        * JavaScriptCore.JSVALUE32_64only.exp:
        * JavaScriptCore.JSVALUE64only.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
            Removed symbols / references to files.

        * runtime/GlobalEvalFunction.cpp: Removed.
        * runtime/GlobalEvalFunction.h: Removed.
        * runtime/NativeFunctionWrapper.h: Removed.
        * runtime/PrototypeFunction.cpp: Removed.
        * runtime/PrototypeFunction.h: Removed.
            Removed.

        * runtime/Executable.cpp:
        (JSC::NativeExecutable::~NativeExecutable):
        * runtime/Executable.h:
        (JSC::NativeExecutable::create):
        (JSC::NativeExecutable::NativeExecutable):
        (JSC::JSFunction::nativeFunction):
        * runtime/JSFunction.cpp:
        (JSC::callHostFunctionAsConstructor):
        (JSC::JSFunction::JSFunction):
        (JSC::JSFunction::getCallData):
        * runtime/JSFunction.h:
        * runtime/JSGlobalData.cpp:
        (JSC::JSGlobalData::getHostFunction):
        * runtime/JSGlobalData.h:
        (JSC::JSGlobalData::getCTIStub):
            Added interpreter-friendly constructors for NativeExecutables.

        * bytecompiler/BytecodeGenerator.cpp:
        * interpreter/Interpreter.cpp:
        * jit/JITStubs.cpp:
        * jsc.cpp:
        * runtime/ArrayConstructor.cpp:
        * runtime/BooleanPrototype.cpp:
        * runtime/BooleanPrototype.h:
        * runtime/CallData.h:
        * runtime/DateConstructor.cpp:
        * runtime/DateConstructor.h:
        * runtime/ErrorPrototype.cpp:
        * runtime/ErrorPrototype.h:
        * runtime/FunctionPrototype.cpp:
        * runtime/FunctionPrototype.h:
        * runtime/JSGlobalObject.cpp:
        * runtime/JSGlobalObject.h:
        * runtime/JSGlobalObjectFunctions.cpp:
        * runtime/Lookup.cpp:
        * runtime/NumberPrototype.cpp:
        * runtime/NumberPrototype.h:
        * runtime/ObjectConstructor.cpp:
        * runtime/ObjectConstructor.h:
        * runtime/ObjectPrototype.cpp:
        * runtime/ObjectPrototype.h:
        * runtime/RegExpPrototype.cpp:
        * runtime/RegExpPrototype.h:
        * runtime/SmallStrings.h:
        * runtime/StringConstructor.cpp:
        * runtime/StringConstructor.h:
            Removed use of redundant classes.

2011-02-19  Laszlo Gombos  <laszlo.1.gombos@nokia.com>

        Unreviewed build fix for Symbian.

        [Symbian] Revert the removal of linking 
        against hal after r79126.

        Dependency on the hal library can not be removed 
        as it is still used (e.g. in MarkStackSymbian.cpp).

        * JavaScriptCore.pri:

2011-02-19  Gavin Barraclough  <barraclough@apple.com>

        Interpreter build fix.

        * runtime/ArrayConstructor.cpp:
        * runtime/BooleanPrototype.cpp:
        * runtime/DateConstructor.cpp:
        * runtime/ErrorPrototype.cpp:
        * runtime/FunctionPrototype.cpp:
        * runtime/Lookup.cpp:
        * runtime/NumberPrototype.cpp:
        * runtime/ObjectConstructor.cpp:
        * runtime/ObjectPrototype.cpp:
        * runtime/RegExpPrototype.cpp:
        * runtime/StringConstructor.cpp:

2011-02-19  Gavin Barraclough  <barraclough@apple.com>

        Build fix!!

        * JavaScriptCore.exp:

2011-02-19  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix!!

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-02-19  Gavin Barraclough  <barraclough@apple.com>

        Windows build fix!

        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def:

2011-02-19  Gavin Barraclough  <barraclough@apple.com>

        Build fix!

        * JavaScriptCore.exp:

2011-02-18  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Sam Weinig.

        Bug 54786 - Devirtualize JSCell::classInfo()

        Instead of making a virtual function call, add a pointer to the ClassInfo
        onto Structure.

        This removes a virtual function call, and paves the way towards removing all
        the createStructure methods, and StructureFlags/AnonymousSlotCount properties
        (these should be able to move onto ClassInfo).

        Calls to Structure::create must now pass a pointer to the ClassInfo for the
        structure. All objects now have a ClassInfo pointer, non-object cell types
        still do not.

        Changes are most mechanical, involving three steps:
            * Remove virtual classInfo() methods.
            * Add &s_info parameter to calls to Structure::create.
            * Rename ClassInfo static members on classes from 'info' to 's_info',
              for consistency.

        * API/JSCallbackConstructor.cpp:
        * API/JSCallbackConstructor.h:
        * API/JSCallbackFunction.cpp:
        * API/JSCallbackFunction.h:
        * API/JSCallbackObject.cpp:
        * API/JSCallbackObject.h:
        * API/JSCallbackObjectFunctions.h:
        * API/JSObjectRef.cpp:
        * API/JSValueRef.cpp:
        * API/JSWeakObjectMapRefPrivate.cpp:
        * JavaScriptCore.exp:
        * debugger/Debugger.cpp:
        * debugger/DebuggerActivation.h:
        * debugger/DebuggerCallFrame.cpp:
        * interpreter/Interpreter.cpp:
        * jit/JITCall32_64.cpp:
        * jit/JITOpcodes.cpp:
        * jit/JITStubs.cpp:
        * profiler/Profiler.cpp:
        * runtime/Arguments.cpp:
        * runtime/Arguments.h:
        * runtime/ArrayConstructor.cpp:
        * runtime/ArrayPrototype.cpp:
        * runtime/ArrayPrototype.h:
        * runtime/BooleanObject.cpp:
        * runtime/BooleanObject.h:
        * runtime/BooleanPrototype.cpp:
        * runtime/DateConstructor.cpp:
        * runtime/DateInstance.cpp:
        * runtime/DateInstance.h:
        * runtime/DatePrototype.cpp:
        * runtime/DatePrototype.h:
        * runtime/ErrorInstance.cpp:
        * runtime/ErrorInstance.h:
        * runtime/ErrorPrototype.cpp:
        * runtime/FunctionPrototype.cpp:
        * runtime/FunctionPrototype.h:
        * runtime/GetterSetter.h:
        * runtime/GlobalEvalFunction.h:
        * runtime/InternalFunction.cpp:
        * runtime/InternalFunction.h:
        * runtime/JSAPIValueWrapper.h:
        * runtime/JSActivation.cpp:
        * runtime/JSActivation.h:
        * runtime/JSArray.cpp:
        * runtime/JSArray.h:
        * runtime/JSByteArray.cpp:
        * runtime/JSByteArray.h:
        * runtime/JSCell.cpp:
        * runtime/JSCell.h:
        * runtime/JSFunction.cpp:
        * runtime/JSFunction.h:
        * runtime/JSGlobalData.cpp:
        * runtime/JSGlobalObject.cpp:
        * runtime/JSGlobalObject.h:
        * runtime/JSNotAnObject.h:
        * runtime/JSONObject.cpp:
        * runtime/JSONObject.h:
        * runtime/JSObject.cpp:
        * runtime/JSObject.h:
        * runtime/JSObjectWithGlobalObject.h:
        * runtime/JSPropertyNameIterator.h:
        * runtime/JSStaticScopeObject.h:
        * runtime/JSString.h:
        * runtime/JSVariableObject.h:
        * runtime/JSWrapperObject.h:
        * runtime/JSZombie.cpp:
        * runtime/JSZombie.h:
        * runtime/Lookup.cpp:
        * runtime/MathObject.cpp:
        * runtime/MathObject.h:
        * runtime/NativeErrorConstructor.cpp:
        * runtime/NativeErrorConstructor.h:
        * runtime/NumberConstructor.cpp:
        * runtime/NumberConstructor.h:
        * runtime/NumberObject.cpp:
        * runtime/NumberObject.h:
        * runtime/NumberPrototype.cpp:
        * runtime/ObjectConstructor.cpp:
        * runtime/ObjectPrototype.cpp:
        * runtime/RegExpConstructor.cpp:
        * runtime/RegExpConstructor.h:
        * runtime/RegExpObject.cpp:
        * runtime/RegExpObject.h:
        * runtime/RegExpPrototype.cpp:
        * runtime/ScopeChain.cpp:
        * runtime/StringConstructor.cpp:
        * runtime/StringObject.cpp:
        * runtime/StringObject.h:
        * runtime/StringObjectThatMasqueradesAsUndefined.h:
        * runtime/StringPrototype.cpp:
        * runtime/StringPrototype.h:
        * runtime/Structure.cpp:
        * runtime/Structure.h:

2011-02-19  David Kilzer  <ddkilzer@apple.com>

        <http://webkit.org/b/54808> Change jsc target to build directly into JavaScriptCore.framework/Resources/jsc

        Reviewed by Dan Bernstein.

        * Configurations/Base.xcconfig: Added
        JAVASCRIPTCORE_FRAMEWORKS_DIR variable.
        * Configurations/JavaScriptCore.xcconfig: Used
        JAVASCRIPTCORE_FRAMEWORKS_DIR to define INSTALL_PATH.
        * JavaScriptCore.xcodeproj/project.pbxproj: Set the INSTALL_PATH
        for Production configuration of jsc target.
        (Copy Into Framework): Removed old build phase.
        (Fix Framework Reference): Renamed build phase to "Copy Into
        Framework".  Added "set -x" call to make the script print the
        commands it is running.  Added code to exit early for Production
        builds since this was never intended for them.  Added code to
        copy jsc into the JavaScriptCore.framework/Resources directory.

2011-02-19  Siddharth Mathur  <siddharth.mathur@nokia.com>

        Reviewed by Laszlo Gombos.

        [Symbian] OSAllocator implementation for Symbian OS. 
        Manages both data and code region requests. V8 and Sunspider tested
        OK with interpreter. Not tested with JSC JIT yet as it has unrelated
        failures. Also no thread safety yet.
        https://bugs.webkit.org/show_bug.cgi?id=51128

        * JavaScriptCore.pri: removed HAL linkage
        * wtf/Bitmap.h:
        (WTF::::findRunOfZeros): find run of zeros in a bitmap. quick n dirty
        * wtf/OSAllocator.h:
        (WTF::OSAllocator::decommitAndRelease): decommit explicitly 
        * wtf/OSAllocatorSymbian.cpp: Impl. of OSAllocator interface 
        (WTF::allocateCodeChunk): utility for code chunks
        (WTF::deallocateCodeChunk): utility for code chunks
        (WTF::dataAllocatorInstance): getter for data allocator instance
        (WTF::OSAllocator::reserveUncommitted):
        (WTF::OSAllocator::releaseDecommitted):
        (WTF::OSAllocator::commit):
        (WTF::OSAllocator::decommit):
        (WTF::OSAllocator::reserveAndCommit):
        (WTF::PageAllocatorSymbian::PageAllocatorSymbian): maps requests 
        to one underlying Symbian chunk
        (WTF::PageAllocatorSymbian::~PageAllocatorSymbian):
        (WTF::PageAllocatorSymbian::reserve):
        (WTF::PageAllocatorSymbian::release):
        (WTF::PageAllocatorSymbian::commit):
        (WTF::PageAllocatorSymbian::decommit):
        (WTF::PageAllocatorSymbian::contains):
        * wtf/PageAllocatorSymbian.h: Added.
        (WTF::SymbianChunk::SymbianChunk): wrapper around RChunk  
        (WTF::SymbianChunk::~SymbianChunk):
        (WTF::SymbianChunk::contains):
        
2011-02-19  Yong Li  <yoli@rim.com>

        Reviewed by Eric Seidel.

        https://bugs.webkit.org/show_bug.cgi?id=54687
        When being built with armcc, "int" bit fields are treated as
        unsigned integers, which will fail the comparisons like "m_offset == -1".
        Using "signed" fixes the problem.

        * assembler/ARMAssembler.h:
        * assembler/ARMv7Assembler.h:

2011-02-18  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Made MarkedSpace block iteration size-class agnostic
        https://bugs.webkit.org/show_bug.cgi?id=54792
        
        SunSpider reports no change.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::clearMarks):
        (JSC::MarkedSpace::sweep):
        (JSC::MarkedSpace::objectCount):
        (JSC::MarkedSpace::size):
        (JSC::MarkedSpace::capacity):
        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::forEach): Iterate blocks in hashing order instead of
        size class list order. This is a much simpler convention in a world
        of many different size classes.

2011-02-18  Kristian Amlie  <kristian.amlie@nokia.com>

        Reviewed by Andreas Kling.

        Added friend exception to Qt platform, which also compiles Windows.

        QtWebKit fails to compile on Windows XP with msvc-2008
        https://bugs.webkit.org/show_bug.cgi?id=54746

        * bytecode/CodeBlock.h:
        * runtime/RegExpObject.h:

2011-02-18  Geoffrey Garen  <ggaren@apple.com>

        (Rolled back in r79022 with crash fixed.)

        Reviewed by Sam Weinig.

        Use hashing instead of linear search in the conservative pointer test
        https://bugs.webkit.org/show_bug.cgi?id=54767
        
        SunSpider reports no change.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::destroy): No need to explicitly clear the blocks array,
        since freeBlock removes items for us.

        (JSC::MarkedSpace::freeBlock): Fixed a typo that always removed the last
        block from the block set instead of the block being freed. Changed to
        remove a block from our data structures before deallocating it, since
        this is slightly cleaner.

        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::contains): Variable-sized objects will use more,
        smaller blocks, so it's important for the contains check not to be O(n)
        in the number of blocks.

2011-02-18  chris reiss  <christopher.reiss@nokia.com>

        Reviewed by Andreas Kling.

        REGRESSION: Date.parse("Tue Nov 23 20:40:05 2010 GMT") returns NaN
        https://bugs.webkit.org/show_bug.cgi?id=49989

        updated test fast/js/script-tests/date-parse-test.js

        * wtf/DateMath.cpp:
        (WTF::parseDateFromNullTerminatedCharacters):

2011-02-18  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r79022.
        http://trac.webkit.org/changeset/79022
        https://bugs.webkit.org/show_bug.cgi?id=54775

        It broke the whole world (Requested by Ossy on #webkit).

        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::contains):

2011-02-18  Yael Aharon  <yael.aharon@nokia.com>

        Reviewed by Dave Hyatt.

        Add support for dir=auto
        https://bugs.webkit.org/show_bug.cgi?id=50916

        Change defaultWritingDirection() to return if the writing direction
        was determined from a letter with strong directionality or not.

        * JavaScriptCore.exp:
        * JavaScriptCore.order:
        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::defaultWritingDirection):
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.h:
        (WTF::String::defaultWritingDirection):

2011-02-18  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Use hashing instead of linear search in the conservative pointer test
        https://bugs.webkit.org/show_bug.cgi?id=54767
        
        SunSpider reports no change.

        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::contains): Variable-sized objects will use more,
        smaller blocks, so it's important for the contains check not to be O(n)
        in the number of blocks.

2011-02-18  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Tightened some usage accounting code in MarkedSpace
        https://bugs.webkit.org/show_bug.cgi?id=54761
        
        SunSpider reports no change.

        * runtime/Heap.cpp:
        (JSC::Heap::Heap): Initialize the marked space high water mark on
        construction, instead of relying on some implicit subtleties to make
        not initializing it work out OK.

        * runtime/Heap.h: Fixed up includes.

        * runtime/MarkedBlock.h: Made firstAtom() static so clients can call it
        even without having allocated a block.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace): Don't pre-allocate a block, since this
        would be prohibitively expensive with multiple size classes.

        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::freeBlock): Track allocated blocks in a hash set,
        since linear search in the contains check will be prohibitively
        expensive once we're using lots of smaller blocks.

        (JSC::MarkedSpace::allocate): Don't assume that we always have a block
        allocated, since we don't anymore. (See above.)

        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h: Updated for changes mentioned above.

2011-02-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Made object allocation secretly variable-sized (Shhhh!)
        https://bugs.webkit.org/show_bug.cgi?id=54721
        
        SunSpider reports no change.
        
        Internally, MarkedBlock now makes variable-sized allocations, even
        though MarkedSpace doesn't take advantage of this yet.

        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock): No need to ASSERT that allocations are
        fixed-sized.

        * runtime/MarkedBlock.h: Shrunk the atom size so we can allocate things
        that are not multiples of 64 bytes.

2011-02-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Fixed some math errors when when using variable-sized cells
        https://bugs.webkit.org/show_bug.cgi?id=54717
        
        SunSpider reports no change.
        
        Computer Science Barbie says, "Math is not so hard afterall!"

        * runtime/JSCell.h:
        (JSC::JSCell::MarkedBlock::allocate): Round up when calculating the
        minimum number of atoms required for a cell, since rounding down
        will get you splinched.

        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        (JSC::MarkedBlock::sweep):
        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::forEach): Changed a bunch of != tests to < tests
        because m_endAtom is actually a fuzzy end -- iterating from firstAtom()
        may not hit m_endAtom exactly.

2011-02-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        A little more abstraction for MarkedSpace::contains
        https://bugs.webkit.org/show_bug.cgi?id=54715

        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::contains): Added a contains function, so MarkedSpace
        doesn't have to know how MarkedBlock tracks containment internally.

        * runtime/MarkedSpace.h:
        (JSC::MarkedSpace::contains): Call through to MarkedBlock to figure out
        if a cell that seems to be in a block is valid.

2011-02-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Sam Weinig.

        Removed the invariant that the last cell in a block is always marked
        https://bugs.webkit.org/show_bug.cgi?id=54713
        
        SunSpider reports no change.
        
        This adds one branch to allocation, but simplifies the mark invariant,
        especially in a world of variable-sized cells. Now, it really is true
        that any cell whose mark bit is set is a valid, live cell whose
        constructor has run and whose destructor has not run.

        * runtime/JSCell.h: 
        (JSC::JSCell::MarkedBlock::allocate): Changed this do-while into a while
        since we can no longer rely on a set mark bit to break out of this loop
        before it reaches the end of the block.

        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::MarkedBlock):
        (JSC::MarkedBlock::sweep): 
        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::isEmpty):
        (JSC::MarkedBlock::clearMarks):
        (JSC::MarkedBlock::markCount):
        (JSC::MarkedBlock::forEach): No need to set a special last mark bit.

2011-02-17  Sheriff Bot  <webkit.review.bot@gmail.com>

        Unreviewed, rolling out r78856 and r78907.
        http://trac.webkit.org/changeset/78856
        http://trac.webkit.org/changeset/78907
        https://bugs.webkit.org/show_bug.cgi?id=54705

        These seem to break tests on 32-bit builds. (Requested by
        aroben on #webkit).

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * collector/handles/Global.h:
        (JSC::Global::internalSet):
        * collector/handles/Handle.h:
        (JSC::HandleTypes::getFromSlot):
        (JSC::HandleTypes::toJSValue):
        (JSC::HandleTypes::validateUpcast):
        (JSC::HandleConverter::operator->):
        (JSC::HandleConverter::operator*):
        (JSC::Handle::Handle):
        (JSC::Handle::get):
        * runtime/JSArray.cpp:
        (JSC::JSArray::sortNumeric):
        * runtime/JSObject.h:
        (JSC::JSObject::inlineGetOwnPropertySlot):
        * runtime/SlotAccessor.h: Removed.
        * runtime/WeakGCPtr.h:
        (JSC::WeakGCPtr::get):
        (JSC::WeakGCPtr::internalSet):
        * runtime/WriteBarrier.h:
        (JSC::DeprecatedPtr::DeprecatedPtr):
        (JSC::DeprecatedPtr::get):
        (JSC::DeprecatedPtr::operator*):
        (JSC::DeprecatedPtr::operator->):
        (JSC::DeprecatedPtr::slot):
        (JSC::DeprecatedPtr::operator UnspecifiedBoolType*):
        (JSC::DeprecatedPtr::operator!):
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::operator*):
        (JSC::WriteBarrierBase::operator->):
        (JSC::WriteBarrierBase::clear):
        (JSC::WriteBarrierBase::slot):
        (JSC::WriteBarrierBase::operator UnspecifiedBoolType*):
        (JSC::WriteBarrierBase::operator!):
        (JSC::WriteBarrierBase::setWithoutWriteBarrier):
        (JSC::WriteBarrier::WriteBarrier):

2011-02-17  Csaba Osztrogonác  <ossy@webkit.org>

        Unreviewed.

        [Qt] Buildfix.

        * wtf/RetainPtr.h: Add missing PLATFORM(CF) guard.

2011-02-17  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Oliver Hunt.

        Made MarkedBlock variable-sized
        https://bugs.webkit.org/show_bug.cgi?id=54692
        
        SunSpider reports no change.
        
        Each MarkedBlock is now composed of a set of fixed-sized atoms, with one
        mark bit per atom. A given cell may be composed of one or more atoms.
        
        * runtime/Heap.cpp:
        (JSC::Heap::allocate): Made fixed-sizedness a property of MarkedSpace,
        bubbling it up from MarkedBlock, since MarkedBlock now supports variable-
        sizedness.

        * runtime/JSCell.h:
        (JSC::JSCell::MarkedBlock::allocate): Removed use of CELLS_PER_BLOCK and
        (implicit) one constants -- these quantities are not constant anymore.
        Updated for switch from cell to atom.

        * runtime/MarkedBlock.cpp:
        (JSC::MarkedBlock::create):
        (JSC::MarkedBlock::destroy):
        (JSC::MarkedBlock::MarkedBlock):
        (JSC::MarkedBlock::sweep):
        * runtime/MarkedBlock.h:
        (JSC::MarkedBlock::firstAtom):
        (JSC::MarkedBlock::atoms):
        (JSC::MarkedBlock::isAtomAligned):
        (JSC::MarkedBlock::blockFor):
        (JSC::MarkedBlock::isEmpty):
        (JSC::MarkedBlock::clearMarks):
        (JSC::MarkedBlock::size):
        (JSC::MarkedBlock::capacity):
        (JSC::MarkedBlock::atomNumber):
        (JSC::MarkedBlock::isMarked):
        (JSC::MarkedBlock::testAndSetMarked):
        (JSC::MarkedBlock::setMarked):
        (JSC::MarkedBlock::forEach): Same as above. Also removed use of CELL_SIZE
        and BLOCK_SIZE, and switched away from calling arbitrary pointers cells.

        * runtime/MarkedSpace.cpp:
        (JSC::MarkedSpace::MarkedSpace):
        (JSC::MarkedSpace::allocateBlock):
        (JSC::MarkedSpace::allocate):
        (JSC::MarkedSpace::reset):
        * runtime/MarkedSpace.h:
        (JSC::CollectorHeap::CollectorHeap):
        (JSC::MarkedSpace::contains): Updated for renames. Made fixed-sizedness
        a property of MarkedSpace.

2011-02-17  Oliver Hunt  <oliver@apple.com>

        Attempt to fix windows build

        * runtime/WriteBarrier.h:

2011-02-17  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Refactor WriteBarrier and DeprecatedPtr to have less code duplication.
        https://bugs.webkit.org/show_bug.cgi?id=54608

        Make use of the tricks used for Handle, et al to avoid duplicating all
        of the logic for DeprecatedPtr and WriteBarrier simply to support known
        vs. unknown types.

        * JavaScriptCore.xcodeproj/project.pbxproj:
        * collector/handles/Global.h:
        (JSC::Global::internalSet):
        * collector/handles/Handle.h:
        (JSC::Handle::Handle):
        (JSC::Handle::get):
        * runtime/JSArray.cpp:
        (JSC::JSArray::sortNumeric):
        * runtime/JSObject.h:
        (JSC::JSObject::inlineGetOwnPropertySlot):
        * runtime/SlotAccessor.h: Added.
        (JSC::SlotTypes::getFromBaseType):
        (JSC::SlotTypes::convertToBaseType):
        (JSC::SlotTypes::getFromSlot):
        (JSC::SlotTypes::toJSValue):
        (JSC::SlotTypes::validateUpcast):
        (JSC::SlotAccessor::operator->):
        (JSC::SlotAccessor::operator*):
        * runtime/WeakGCPtr.h:
        (JSC::WeakGCPtr::get):
        (JSC::WeakGCPtr::internalSet):
        * runtime/WriteBarrier.h:
        (JSC::DeprecatedPtr::DeprecatedPtr):
        (JSC::DeprecatedPtr::get):
        (JSC::DeprecatedPtr::slot):
        (JSC::DeprecatedPtr::operator=):
        (JSC::WriteBarrierTranslator::convertToStorage):
        (JSC::WriteBarrierTranslator::convertFromStorage):
        (JSC::WriteBarrierBase::set):
        (JSC::WriteBarrierBase::get):
        (JSC::WriteBarrierBase::clear):
        (JSC::WriteBarrierBase::slot):
        (JSC::WriteBarrierBase::operator UnspecifiedBoolType*):
        (JSC::WriteBarrierBase::operator!):
        (JSC::WriteBarrierBase::setWithoutWriteBarrier):
        (JSC::WriteBarrier::WriteBarrier):

2011-02-17  Kevin Ollivier  <kevino@theolliviers.com>

        [wx] Revert incorrect blind fix and restore previous working code.

        * wtf/wx/StringWx.cpp:
        (WTF::String::String):

2011-02-16  Geoffrey Garen  <ggaren@apple.com>

        Reviewed by Maciej Stachowiak.

        Intermittent crashes beneath MarkStack::drain
        https://bugs.webkit.org/show_bug.cgi?id=54614
        <rdar://problem/8971070>
        
        The crashes were caused by a GC happening after the global object's
        property table had grown (due to compilation), but before the properties
        had been fully initialized by program execution.

        * bytecompiler/BytecodeGenerator.cpp:
        (JSC::BytecodeGenerator::BytecodeGenerator): Explicitly resize the global
        object's register storage immediately, without waiting for program
        execution to do it for us. This ensures that the global object's count
        of global variables is consistent with the size of its global variable
        storage at all times, and it ensures that all global variables are
        properly initialized from the get-go.

        * runtime/JSGlobalObject.cpp:
        (JSC::JSGlobalObject::resizeRegisters):
        * runtime/JSGlobalObject.h: Added a helper function for growing the
        global object's register storage, and initializing new registers.

== Rolled over to ChangeLog-2011-02-16 ==
