https://bugs.webkit.org/show_bug.cgi?id=115582

Reviewed by Geoffrey Garen.

* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::ByteCodeParser):
(ByteCodeParser):
(JSC::DFG::parse):
* dfg/DFGByteCodeParser.h:
(DFG):
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153144 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=115445

Reviewed by Geoffrey Garen.

Change the Profiler::Database API for Compilation creation so that we don't add
it to the Database until it's completely constructed. This prevents the Database
from seeing Compilations that are being concurrently constructed.

Change the Profiler::Database itself to do locking for creation of Bytecodes and
for modifying the map. This map may be consulted by both the main thread and the
concurrent thread.

* dfg/DFGGraph.cpp:
(JSC::DFG::Graph::Graph):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::link):
(JSC::DFG::JITCompiler::linkFunction):
* jit/JIT.cpp:
(JSC::JIT::privateCompile):
* profiler/ProfilerBytecodes.h:
* profiler/ProfilerDatabase.cpp:
(JSC::Profiler::Database::ensureBytecodesFor):
(JSC::Profiler::Database::notifyDestruction):
(JSC::Profiler::Database::addCompilation):
* profiler/ProfilerDatabase.h:
(Database):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153143 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=115300

Source/JavaScriptCore:

Reviewed by Geoffrey Garen.

Change any code transitively called from DFG compilation to use StringImpl*
directly instead of String, Identifier, or PropertyName. I use the convention
of passing "StringImpl* uid" instead of an Identifier or PropertyName.

Switch over any code transitively called from DFG compilation to use CStrings
whenever possible for all of its debug dumping.

This makes it possible to compile things without hitting the ref/deref
assertion in StringImpl.

* JavaScriptCore.xcodeproj/project.pbxproj:
* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::inferredName):
(JSC::CodeBlock::sourceCodeForTools):
(JSC::CodeBlock::sourceCodeOnOneLine):
(JSC::constantName):
(JSC::idName):
(JSC::CodeBlock::registerName):
(JSC::regexpToSourceString):
(JSC::regexpName):
(JSC::pointerToSourceString):
(JSC::CodeBlock::printUnaryOp):
(JSC::CodeBlock::printBinaryOp):
(JSC::CodeBlock::printConditionalJump):
(JSC::CodeBlock::printGetByIdOp):
(JSC::dumpStructure):
(JSC::CodeBlock::printCallOp):
(JSC::CodeBlock::printPutByIdOp):
(JSC::CodeBlock::printStructure):
(JSC::CodeBlock::printStructures):
(JSC::CodeBlock::dumpBytecode):
* bytecode/CodeBlock.h:
(CodeBlock):
* bytecode/CodeBlockHash.cpp:
(JSC::CodeBlockHash::CodeBlockHash):
* bytecode/CodeOrigin.cpp:
(JSC::InlineCallFrame::inferredName):
* bytecode/CodeOrigin.h:
(InlineCallFrame):
* bytecode/GetByIdStatus.cpp:
(JSC::GetByIdStatus::computeFromLLInt):
(JSC::GetByIdStatus::computeForChain):
(JSC::GetByIdStatus::computeFor):
* bytecode/GetByIdStatus.h:
(JSC):
(GetByIdStatus):
* bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeFromLLInt):
(JSC::PutByIdStatus::computeFor):
* bytecode/PutByIdStatus.h:
(JSC):
(PutByIdStatus):
* bytecode/ReduceWhitespace.cpp:
(JSC::reduceWhitespace):
* bytecode/ReduceWhitespace.h:
(JSC):
* bytecode/ResolveGlobalStatus.cpp:
(JSC::computeForStructure):
(JSC::ResolveGlobalStatus::computeFor):
* bytecode/ResolveGlobalStatus.h:
(JSC):
(ResolveGlobalStatus):
* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::executeEffects):
* dfg/DFGByteCodeParser.cpp:
(ByteCodeParser):
(JSC::DFG::ByteCodeParser::parseResolveOperations):
(JSC::DFG::ByteCodeParser::parseBlock):
(JSC::DFG::ByteCodeParser::InlineStackEntry::InlineStackEntry):
* dfg/DFGConstantFoldingPhase.cpp:
(JSC::DFG::ConstantFoldingPhase::foldConstants):
* dfg/DFGDesiredIdentifiers.cpp: Added.
(DFG):
(JSC::DFG::DesiredIdentifiers::DesiredIdentifiers):
(JSC::DFG::DesiredIdentifiers::~DesiredIdentifiers):
(JSC::DFG::DesiredIdentifiers::addLazily):
(JSC::DFG::DesiredIdentifiers::reallyAdd):
* dfg/DFGDesiredIdentifiers.h: Added.
(DFG):
(DesiredIdentifiers):
(JSC::DFG::DesiredIdentifiers::numberOfIdentifiers):
(JSC::DFG::DesiredIdentifiers::at):
(JSC::DFG::DesiredIdentifiers::operator[]):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
(JSC::DFG::FixupPhase::isStringPrototypeMethodSane):
(JSC::DFG::FixupPhase::canOptimizeStringObjectAccess):
* dfg/DFGGraph.cpp:
(JSC::DFG::Graph::Graph):
(JSC::DFG::Graph::dump):
* dfg/DFGGraph.h:
(Graph):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::link):
* dfg/DFGOperations.cpp:
* dfg/DFGOperations.h:
* dfg/DFGRepatch.cpp:
(JSC::DFG::tryBuildGetByIDList):
* dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::identifierUID):
(JSC::DFG::SpeculativeJIT::callOperation):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::cachedGetById):
(JSC::DFG::SpeculativeJIT::cachedPutById):
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::cachedGetById):
(JSC::DFG::SpeculativeJIT::cachedPutById):
(JSC::DFG::SpeculativeJIT::compile):
* parser/SourceCode.cpp: Added.
(JSC):
(JSC::SourceCode::toUTF8):
* parser/SourceCode.h:
(SourceCode):
* profiler/ProfilerBytecodes.cpp:
(JSC::Profiler::Bytecodes::toJS):
* profiler/ProfilerBytecodes.h:
(JSC::Profiler::Bytecodes::inferredName):
(JSC::Profiler::Bytecodes::sourceCode):
(Bytecodes):
* runtime/Identifier.h:
(JSC::Identifier::utf8):
(JSC):
* runtime/Structure.cpp:
(JSC::Structure::addPropertyTransitionToExistingStructureImpl):
(JSC::Structure::addPropertyTransitionToExistingStructure):
(JSC::Structure::addPropertyTransitionToExistingStructureConcurrently):
(JSC::Structure::getConcurrently):
(JSC::Structure::prototypeChainMayInterceptStoreTo):
(JSC):
* runtime/Structure.h:
(Structure):
* runtime/StructureInlines.h:
(JSC::Structure::getConcurrently):

Source/WTF:

Reviewed by Geoffrey Garen.

Make it possible to do more things directly to StringImpl*'s, including being
able to directly do utf8 conversion on a substring without creating the
substring first.

Add assertions to StringImpl that it isn't being ref/deref'd from the
compilation thread.

* wtf/PrintStream.cpp:
(WTF::printInternal):
(WTF):
* wtf/PrintStream.h:
(WTF):
(WTF::printInternal):
* wtf/StringPrintStream.h:
(WTF):
(WTF::toCString):
* wtf/text/StringImpl.cpp:
(WTF::StringImpl::utf8ForRange):
(WTF::StringImpl::utf8):
(WTF):
* wtf/text/StringImpl.h:
(StringImpl):
(WTF::StringImpl::hasAtLeastOneRef):
(WTF::StringImpl::ref):
(WTF::StringImpl::deref):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153142 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=115525

Reviewed by Geoffrey Garen.

The structure transition table basically maps string to structure. The string is
always also stored, and ref'd, in the structure in Structure::m_nameInPrevious.
m_nameInPrevious is never mutated, and never cleared. The string cannot die unless
the structure dies. If the structure dies, then that entry in the transition map
becomes a zombie anyway and we will detect this separately.

So, we don't need to use RefPtr<StringImpl>. We can just use StringImpl*.

This also fixes a goof where we were getting the StringImpl's hash rather than
using a pointer hash. Not only is the latter faster, but it prevents my change
from leading to crashes: with my change we can have zombie keys, not just zombie
values. They will exist only until the next map mutation, which will clear them.
Lookups will work fine because the lookup routine will reject zombies. But it
does mean that the HashMap will have to deal with dangling StringImpl*'s; all it
takes to make this work is to ensure that the HashMap itself never dereferences
them. Using a pointer hash rather than StringImpl::existingHash() accomplishes
this.

This also ensures that we don't accidentally call ref() or deref() from the
compilation thread, if the compilation thread inspects the transition table.

And no, we wouldn't have been able to use the HashMap<RefPtr<...>, ...>
specialization, because the transition table is actually
HashMap<pair<RefPtr<StringImpl>, unsigned>, ...>: hence that specialization
doesn't kick in. We could have written a new specialization or something, but
that seemed like a lot of work given that we don't need the table to be ref'ing
the strings anyways.

* runtime/Structure.cpp:
(JSC::StructureTransitionTable::add):
* runtime/StructureTransitionTable.h:
(StructureTransitionTable):
(Hash):
(JSC::StructureTransitionTable::Hash::hash):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153141 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=115468

Reviewed by Geoffrey Garen.

This makes the main thread modify the transition table while holding a lock. Note
that the GC might modify its weak pointers without locking, but the GC will lock out
the compilation thread anyway. The map will then only reshape in response to add()
and set(), which happen while holding a lock.

This allows the compilation thread to now query transition tables safely, provided it
holds a lock when doing so.

Also changed LLVM asm printer initialization to just initialize the X86 one. It makes
sense for us to just initialize the asm printer(s) that we actually use; you could
imagine us being linked to a system LLVM that has cross-compilation support; there is
no point in the WebKit or JSC process doing work to initialize all of those targets.
That part was rubber stamped by Mark Hahnenberg.

* bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeFor):
* runtime/InitializeThreading.cpp:
(JSC::initializeThreadingOnce):
* runtime/Structure.cpp:
(JSC::Structure::addPropertyTransitionToExistingStructureImpl):
(JSC::Structure::addPropertyTransitionToExistingStructure):
(JSC):
(JSC::Structure::addPropertyTransitionToExistingStructureConcurrently):
(JSC::Structure::addPropertyTransition):
(JSC::Structure::nonPropertyTransition):
* runtime/Structure.h:
(Structure):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153140 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: Structure::getConcurrently() may be called from for uncacheable dictionaries, and this is safe
https://bugs.webkit.org/show_bug.cgi?id=115464

Reviewed by Oliver Hunt and Geoffrey Garen.

This can happen for example transitively from JSObject::put(). getCurrently() does
work for uncacheable dictionaries; it just has the obvious race that right after it
returns, the result it returned may no longer be right. This isn't an issue if it was
called on the main thread, and may not be an issue in some other situations.

So, we should just remove the assertion, since the only thing it buys us is crashes.

* runtime/Structure.cpp:
(JSC::Structure::getConcurrently):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153139 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Rubber stamped by Mark Rowe.

* Scripts/copy-webkitlibraries-to-product-directory:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153138 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Rubber stamped by Mark Rowe.

* Configurations/JavaScriptCore.xcconfig:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153137 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Rubber stamped by Mark Hahnenberg.

* LLVMIncludesMountainLion.tar.bz2:
* LLVMLibrariesMountainLion.tar.bz2:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153136 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: String::utf8() should also be available as StringImpl::utf8() so that you don't have to ref() a StringImpl just to get its utf8()
https://bugs.webkit.org/show_bug.cgi?id=115393

Reviewed by Geoffrey Garen.

Source/JavaScriptCore:

* runtime/JSGlobalObjectFunctions.cpp:
(JSC::encode):

Source/WebCore:

No new tests because no new behavior.

* Modules/websockets/WebSocket.cpp:
(WebCore::WebSocket::close):
* Modules/websockets/WebSocketChannel.cpp:
(WebCore::WebSocketChannel::send):
* html/MediaFragmentURIParser.cpp:
(WebCore::MediaFragmentURIParser::parseFragments):

Source/WTF:

* WTF.xcodeproj/project.pbxproj:
* wtf/text/ConversionMode.h: Added.
(WTF):
* wtf/text/StringImpl.cpp:
(WTF):
(WTF::putUTF8Triple):
(WTF::StringImpl::utf8):
* wtf/text/StringImpl.h:
(StringImpl):
* wtf/text/WTFString.cpp:
(WTF):
(WTF::String::utf8):
* wtf/text/WTFString.h:
(String):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153135 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: ASSERT that commonly used not-thread-safe methods in the runtime are not being called during compilation
https://bugs.webkit.org/show_bug.cgi?id=115297

Source/JavaScriptCore:

Reviewed by Geoffrey Garen.

Put in assertions that we're not doing bad things in compilation threads. Also
factored compilation into compile+link so that even though we don't yet have
concurrent compilation, we can be explicit about which parts of DFG work are
meant to be concurrent, and which aren't.

Also fix a handful of bugs found by these assertions.

* JavaScriptCore.xcodeproj/project.pbxproj:
* bytecode/ResolveGlobalStatus.cpp:
(JSC::computeForStructure):
* bytecode/Watchpoint.cpp:
(JSC::WatchpointSet::add):
(JSC::InlineWatchpointSet::inflateSlow):
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::~JITCompiler):
(DFG):
(JSC::DFG::JITCompiler::compileBody):
(JSC::DFG::JITCompiler::compile):
(JSC::DFG::JITCompiler::link):
(JSC::DFG::JITCompiler::compileFunction):
(JSC::DFG::JITCompiler::linkFunction):
* dfg/DFGJITCompiler.h:
(JITCompiler):
* ftl/FTLCompile.cpp:
(JSC::FTL::compile):
* ftl/FTLCompile.h:
(FTL):
* ftl/FTLLink.cpp: Added.
(FTL):
(JSC::FTL::compileEntry):
(JSC::FTL::link):
* ftl/FTLLink.h: Added.
(FTL):
* ftl/FTLState.cpp:
(JSC::FTL::State::State):
* ftl/FTLState.h:
(FTL):
(State):
* runtime/Structure.cpp:
(JSC::Structure::get):
(JSC::Structure::prototypeChainMayInterceptStoreTo):
* runtime/Structure.h:
(JSC::Structure::materializePropertyMapIfNecessary):
* runtime/StructureInlines.h:
(JSC::Structure::get):

Source/WTF:

Reviewed by Geoffrey Garen.

Taught WTF the notion of compilation threads. This allows all parts of our stack
to assert that we're not being called from a JSC compilation thread. This is in
WTF because it will probably end up being used in StringImpl and WTFString.

* WTF.xcodeproj/project.pbxproj:
* wtf/CompilationThread.cpp: Added.
(WTF):
(WTF::initializeCompilationThreadsOnce):
(WTF::initializeCompilationThreads):
(WTF::isCompilationThread):
(WTF::exchangeIsCompilationThread):
* wtf/CompilationThread.h: Added.
(WTF):
(CompilationScope):
(WTF::CompilationScope::CompilationScope):
(WTF::CompilationScope::~CompilationScope):
(WTF::CompilationScope::leaveEarly):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153134 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=113624

Reviewed by Geoffrey Garen.

Made all of the operations that the FTL already supports, also support doubles.
OSR exit already basically had everything it needed, so no changes there. This
mostly just glues together bits of DFG IR to LLVM IR, in a straight-forward way.

* ftl/FTLAbbreviations.h:
(FTL):
(JSC::FTL::doubleType):
(JSC::FTL::constReal):
(JSC::FTL::buildPhi):
(JSC::FTL::addIncoming):
(JSC::FTL::buildFAdd):
(JSC::FTL::buildFSub):
(JSC::FTL::buildFMul):
(JSC::FTL::buildFNeg):
(JSC::FTL::buildSIToFP):
(JSC::FTL::buildUIToFP):
(JSC::FTL::buildBitCast):
(JSC::FTL::buildFCmp):
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLCommonValues.cpp:
(JSC::FTL::CommonValues::CommonValues):
* ftl/FTLCommonValues.h:
(CommonValues):
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::LowerDFGToLLVM):
(JSC::FTL::LowerDFGToLLVM::lower):
(JSC::FTL::LowerDFGToLLVM::compileGetLocal):
(JSC::FTL::LowerDFGToLLVM::compileSetLocal):
(JSC::FTL::LowerDFGToLLVM::compileAdd):
(JSC::FTL::LowerDFGToLLVM::compileArithSub):
(JSC::FTL::LowerDFGToLLVM::compileArithMul):
(JSC::FTL::LowerDFGToLLVM::compileArithNegate):
(JSC::FTL::LowerDFGToLLVM::compileUInt32ToNumber):
(JSC::FTL::LowerDFGToLLVM::compileGetByVal):
(JSC::FTL::LowerDFGToLLVM::compileCompareEq):
(JSC::FTL::LowerDFGToLLVM::compileCompareLess):
(JSC::FTL::LowerDFGToLLVM::lowDouble):
(LowerDFGToLLVM):
(JSC::FTL::LowerDFGToLLVM::lowJSValue):
(JSC::FTL::LowerDFGToLLVM::isCellOrMisc):
(JSC::FTL::LowerDFGToLLVM::unboxDouble):
(JSC::FTL::LowerDFGToLLVM::boxDouble):
(JSC::FTL::LowerDFGToLLVM::speculate):
(JSC::FTL::LowerDFGToLLVM::speculateNumber):
(JSC::FTL::LowerDFGToLLVM::speculateRealNumber):
(JSC::FTL::LowerDFGToLLVM::appendOSRExit):
(JSC::FTL::LowerDFGToLLVM::addExitArgumentForNode):
* ftl/FTLOutput.h:
(JSC::FTL::Output::constDouble):
(Output):
(JSC::FTL::Output::phi):
(JSC::FTL::Output::doubleAdd):
(JSC::FTL::Output::doubleSub):
(JSC::FTL::Output::doubleMul):
(JSC::FTL::Output::doubleNeg):
(JSC::FTL::Output::intToFP):
(JSC::FTL::Output::intToDouble):
(JSC::FTL::Output::unsignedToFP):
(JSC::FTL::Output::unsignedToDouble):
(JSC::FTL::Output::bitCast):
(JSC::FTL::Output::loadDouble):
(JSC::FTL::Output::storeDouble):
(JSC::FTL::Output::doubleEqual):
(JSC::FTL::Output::doubleNotEqualOrUnordered):
(JSC::FTL::Output::doubleLessThan):
(JSC::FTL::Output::doubleLessThanOrEqual):
(JSC::FTL::Output::doubleGreaterThan):
(JSC::FTL::Output::doubleGreaterThanOrEqual):
(JSC::FTL::Output::doubleEqualOrUnordered):
(JSC::FTL::Output::doubleNotEqual):
(JSC::FTL::Output::doubleLessThanOrUnordered):
(JSC::FTL::Output::doubleLessThanOrEqualOrUnordered):
(JSC::FTL::Output::doubleGreaterThanOrUnordered):
(JSC::FTL::Output::doubleGreaterThanOrEqualOrUnordered):
(JSC::FTL::Output::testIsZero64):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153133 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=115301

Reviewed by Geoffrey Garen.

Makes SymbolTable thread-safe. Relies on SymbolTableEntry already being immutable,
other than the WatchpointSet; but the WatchpointSet already has a righteous
concurrency protocol. So, this patch just protects the SymbolTable's HashMap.

* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::nameForRegister):
* bytecompiler/BytecodeGenerator.cpp:
(JSC::BytecodeGenerator::addVar):
* runtime/Executable.cpp:
(JSC::ProgramExecutable::addGlobalVar):
* runtime/JSActivation.cpp:
(JSC::JSActivation::getOwnNonIndexPropertyNames):
(JSC::JSActivation::symbolTablePutWithAttributes):
* runtime/JSSymbolTableObject.cpp:
(JSC::JSSymbolTableObject::getOwnNonIndexPropertyNames):
* runtime/JSSymbolTableObject.h:
(JSC::symbolTableGet):
(JSC::symbolTablePut):
(JSC::symbolTablePutWithAttributes):
* runtime/SymbolTable.cpp:
(JSC::SymbolTable::SymbolTable):
(JSC::SymbolTable::~SymbolTable):
* runtime/SymbolTable.h:
(JSC::SymbolTable::find):
(JSC::SymbolTable::get):
(JSC::SymbolTable::inlineGet):
(JSC::SymbolTable::begin):
(JSC::SymbolTable::end):
(JSC::SymbolTable::size):
(JSC::SymbolTable::add):
(JSC::SymbolTable::set):
(JSC::SymbolTable::contains):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153132 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=115299

Reviewed by Anders Carlsson.

The compiler often does things like:

1c) Observe something that would imply that a WatchpointSet ought to be invalid

2c) Check that it is invalid

The main thread often does things like:

1m) Fire the watchpoint set

2m) Do some other thing that would cause the compiler to assume that the WatchpointSet
ought to be invalid

An example is structure transitions, where (1c) is the compiler noticing that a
put_by_id inline cache is in a transition state, with the source structure being S;
(2c) is the compiler asserting that S's watchpoint set is invalid; (1m) is the main
thread firing S's watchpoint set before it does the first transition away from S; and
(2m) is the main thread caching the put_by_id transition away from S.

This is totally fine, except that (1c) and (2c), and (1m) and (2m) could be reordered.
Probably, in most cases, this ought to do enough things that the main thread probably
already has some fencing. But the compiler thread definitely doesn't have fencing. In
any case, we should play it safe and just have additional fencing in all of the
relevant places.

We already have some idioms to put load-load and store-store fences in the right
places. But this change just makes WatchpointSet take care of this for us, thus
reducing the chances of us getting this wrong.

* bytecode/Watchpoint.cpp:
(JSC::WatchpointSet::notifyWriteSlow):
* bytecode/Watchpoint.h:
(WatchpointSet):
(JSC::WatchpointSet::isStillValid):
(JSC::WatchpointSet::hasBeenInvalidated):
(JSC::InlineWatchpointSet::hasBeenInvalidated):
(JSC::InlineWatchpointSet::notifyWrite):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::parseBlock):
* dfg/DFGDesiredWatchpoints.h:
(JSC::DFG::GenericDesiredWatchpoints::shouldAssumeMixedState):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153131 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: CFA should defend against results seeming inconsistent due to a watchpoint firing during compilation
https://bugs.webkit.org/show_bug.cgi?id=115083

Reviewed by Geoffrey Garen.

This ruggedizes our racyness with respect to watchpoints. We want to be able to assert,
in some places, that a watchpoint-based optimization has only occurred if the
watchpoint set was still valid. But currently we *can* soundly do watchpoint-based
optimizations even for invalid watchpoints, so long as we recorded in the IR that we
had done so; this will then lead to the code being insta-jettisoned after compilation
completes. Obviously, we don't want this to happen often - but we do want to allow it
precisely in the case of watchpoint races.

This adds the ability to assert that we hadn't over-watchpointed ourselves, with and
exemption for races.

* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::executeEffects):
* dfg/DFGAbstractValue.cpp:
(JSC::DFG::AbstractValue::setFuturePossibleStructure):
(JSC::DFG::AbstractValue::filterFuturePossibleStructure):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::addStructureTransitionCheck):
(JSC::DFG::ByteCodeParser::parseResolveOperations):
(JSC::DFG::ByteCodeParser::parseBlock):
* dfg/DFGConstantFoldingPhase.cpp:
(JSC::DFG::ConstantFoldingPhase::addStructureTransitionCheck):
* dfg/DFGDesiredWatchpoints.h:
(GenericDesiredWatchpoints):
(JSC::DFG::GenericDesiredWatchpoints::isStillValid):
(JSC::DFG::GenericDesiredWatchpoints::shouldAssumeMixedState):
(JSC::DFG::GenericDesiredWatchpoints::isValidOrMixed):
(JSC::DFG::DesiredWatchpoints::isStillValid):
(JSC::DFG::DesiredWatchpoints::shouldAssumeMixedState):
(JSC::DFG::DesiredWatchpoints::isValidOrMixed):
(DesiredWatchpoints):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::canOptimizeStringObjectAccess):
* dfg/DFGGraph.h:
(JSC::DFG::Graph::masqueradesAsUndefinedWatchpointIsStillValid):
(Graph):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::link):
(JSC::DFG::JITCompiler::compile):
(JSC::DFG::JITCompiler::compileFunction):
* dfg/DFGJITCompiler.h:
(JSC::DFG::JITCompiler::addLazily):
(JITCompiler):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compilePeepHoleObjectEquality):
* dfg/DFGSpeculativeJIT.h:
(SpeculativeJIT):
(JSC::DFG::SpeculativeJIT::masqueradesAsUndefinedWatchpointIsStillValid):
(JSC::DFG::SpeculativeJIT::speculationWatchpointForMasqueradesAsUndefined):
(JSC::DFG::SpeculativeJIT::speculateStringObjectForStructure):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::nonSpeculativeNonPeepholeCompareNull):
(JSC::DFG::SpeculativeJIT::nonSpeculativePeepholeBranchNull):
(JSC::DFG::SpeculativeJIT::compileObjectEquality):
(JSC::DFG::SpeculativeJIT::compileObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compilePeepHoleObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compileObjectOrOtherLogicalNot):
(JSC::DFG::SpeculativeJIT::emitObjectOrOtherBranch):
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::nonSpeculativeNonPeepholeCompareNull):
(JSC::DFG::SpeculativeJIT::nonSpeculativePeepholeBranchNull):
(JSC::DFG::SpeculativeJIT::compileObjectEquality):
(JSC::DFG::SpeculativeJIT::compileObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compilePeepHoleObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compileObjectOrOtherLogicalNot):
(JSC::DFG::SpeculativeJIT::emitObjectOrOtherBranch):
(JSC::DFG::SpeculativeJIT::compile):
* ftl/FTLCompile.cpp:
(JSC::FTL::compile):
* ftl/FTLState.h:
(State):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153130 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: AbstractValue methods that deal with watchpoints should have access to Graph, so that in debug mode, Graph can track the history of watchpoint states and detect races
https://bugs.webkit.org/show_bug.cgi?id=115084

Reviewed by Geoffrey Garen.

The idea is that as part of https://bugs.webkit.org/show_bug.cgi?id=115083, I'll have
Graph record the initial state of a watchpoint at the time that we decide to take
advantage of it; then I will use this to disable any watchpoint-related assertions
in debug mode. Note that this "watchpoint cache" will only be maintained in debug
mode, so there will be no release performance implications. But to do this, I need to
ensure that all of the places that reason about watchpoints have access to Graph.
For example, I'll want AbstractValue::setFuturePossibleStructure to record the state
of the watchpoint in Graph so that subsequent assertions can check if the watchpoint's
state had changed since that decision was made.

* JavaScriptCore.xcodeproj/project.pbxproj:
* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::initialize):
(JSC::DFG::AbstractState::executeEffects):
(JSC::DFG::AbstractState::mergeStateAtTail):
* dfg/DFGAbstractState.h:
(JSC::DFG::AbstractState::trySetConstant):
* dfg/DFGAbstractValue.cpp: Added.
(DFG):
(JSC::DFG::AbstractValue::setMostSpecific):
(JSC::DFG::AbstractValue::set):
(JSC::DFG::AbstractValue::filter):
(JSC::DFG::AbstractValue::setFuturePossibleStructure):
(JSC::DFG::AbstractValue::filterFuturePossibleStructure):
(JSC::DFG::AbstractValue::dump):
* dfg/DFGAbstractValue.h:
(DFG):
(AbstractValue):
(JSC::DFG::AbstractValue::setType):
(JSC::DFG::AbstractValue::filterByValue):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153129 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114987

Reviewed by Geoffrey Garen.

This completes the work started by r148570. That patch made it possible to do
Structure::get() without modifying Structure. This patch takes this further, and
makes this thread-safe (for non-uncacheable-dictionaries) via
Structure::getConcurrently(). This method not only doesn't modify Structure, but
also ensures that any concurrent attempts to add to, remove from, or steal the
table from that structure doesn't mess up the result of the call. The call may
return invalidOffset even if a property is *just* about to be added, but it will
never do the reverse: if it returns a property then you can be sure that the
structure really does have that property and always will have it.

* bytecode/GetByIdStatus.cpp:
(JSC::GetByIdStatus::computeFromLLInt):
(JSC::GetByIdStatus::computeForChain):
(JSC::GetByIdStatus::computeFor):
* bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeFromLLInt):
(JSC::PutByIdStatus::computeFor):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::isStringPrototypeMethodSane):
* runtime/PropertyMapHashTable.h:
(PropertyTable):
(JSC::PropertyTable::findConcurrently):
(JSC):
(JSC::PropertyTable::add):
(JSC::PropertyTable::remove):
(JSC::PropertyTable::reinsert):
(JSC::PropertyTable::rehash):
* runtime/PropertyTable.cpp:
(JSC::PropertyTable::PropertyTable):
* runtime/Structure.cpp:
(JSC::Structure::findStructuresAndMapForMaterialization):
(JSC::Structure::getConcurrently):
* runtime/Structure.h:
(Structure):
* runtime/StructureInlines.h:
(JSC::Structure::getConcurrently):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153128 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114933

Reviewed by Andy Estes.

This makes it easy to get set up for tandem LLVM builds.

* Scripts/copy-webkitlibraries-to-product-directory:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153127 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: WebKit's build system should relink JavaScriptCore if LLVM's libraries changed but its headers didn't
https://bugs.webkit.org/show_bug.cgi?id=114926

Source/JavaScriptCore:

Reviewed by Geoffrey Garen.

Use a phony file that includes a phony header to force JavaScriptCore to be relinked
if necessary. The external LLVM-importing scripts will touch the header if the libraries
are known to have changed.

* JavaScriptCore.xcodeproj/project.pbxproj:
* ftl/WebKitLLVMLibraryAnchor.cpp: Added.

Tools:

Reviewed by Geoffrey Garen.

If the LLVM libraries change, then touch a phony header, which will force relink
of JavaScriptCore.

* Scripts/copy-webkitlibraries-to-product-directory:
(unpackIfNecessary):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153126 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114925

Reviewed by Geoffrey Garen.

This enables building LLVM along with WebKit, so that build-jsc and build-webkit
will also optionally build LLVM and quickly symlink LLVM's built products into
the right places.

Most WebKit and JSC hackers will want to rely on the checked-in already-built
versions of LLVM in WebKitLibraries. But developing both systems in tandem is an
increasingly common use-case for me, and it may become a common use case for a
handful of others. Currently, this is really painful: you first have to build
LLVM, then you have to export-llvm-build (which takes a while), and then you
have to make sure that your LLVM_LIBRARY_PACKAGE and LLVM_INCLUDE_PACKAGE
variables are set to point to the thing you exported. The whole process loses
track of dependencies very quickly: making a tiny change in LLVM requires
packaging, and then unpackaging, a large number of potentially large headers and
static libraries. Not only is this slow but it then causes the WebKit build
system to rebuild anything that transitively includes any LLVM header, which is
now quite a few files. While this sort of use pattern is still worthwhile if
you're trying to package a binary drop and test it, it's not great if you're
just trying to do experimental development that involves making small changes
in both trees.

This change fixes this use case while keeping the old use cases intact. You can
do tandem development using one of two modes:

Your own LLVM directory: just set LLVM_SOURCE_PATH to the *absolute* path of
the LLVM directory you're using. Once this is done, any invocation of a WebKit
build via build-jsc or build-webkit will also build LLVM, and then quickly
symlink things into place without perturbing dependency tracking.

Internal LLVM directory: if you check out llvm into a directory called 'llvm'
right off of the WebKit source tree, then the build system will automatically
use this.

Here's how this takes care of dependencies:

Headers: the include/llvm and include/llvm-c directories are symlinked into
$productsDir/usr/local/include. And then everything just works.

Libraries: the build system detects, by reading LLVM's Makefile.config, which
mode LLVM is built in (like Release+Asserts or Debug+Asserts) and symlinks
the .a files into $productsDir/<thingy>. It will ranlib those libraries only
if they have changed, by checking both the modification time and also whether
the last time we had a symlink, that symlink was from the same directory.
This helps if you switch to an *older* LLVM build (using LLVM_SOURCE_PATH)
but that build wasn't yet ranlib'd.

One problem that this does not yet solve is that xcodebuild will not relink
JavaScriptCore if the only thing that changed was the libraries. I will work
on this problem separately: https://bugs.webkit.org/show_bug.cgi?id=114926.

* Scripts/copy-webkitlibraries-to-product-directory:
(unpackIfNecessary):
(fileContains):
(fileContentsEquals):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153125 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: It should be possible to query WatchpointSets, and add Watchpoints, even if the compiler is running in another thread
https://bugs.webkit.org/show_bug.cgi?id=114909

Source/JavaScriptCore:

Reviewed by Oliver Hunt.

The idea here is that a concurrent compiler will use watchpoint sets as follows:

During concurrent compilation: It will create Watchpoints, and query WatchpointSets only
for the purpose of profiling. That is, it will use decide whether it is profitable to
compile the code "as if" the watchpoint sets are valid.

During synchronous linking: By "linking" I don't necessarily mean the LinkBuffer stuff,
but just the very bitter end of compilation where we make the JIT code callable. This
can happen after LinkBuffer stuff. Anyway, this will have to happen synchronously, and
at that point we can (a) check that all WatchpointSets that we assumed were valid are
still valid and (b) if they are then we add the watchpoints to those sets. If any of the
sets are invalid, we give up on this compilation and try again later.

The querying of WatchpointSets is engineered to say that the set is still valid if it
is so *right now*, but this is done in a racy way and so it may say so spuriously: we
may, with hopefully low probability, have a set that says it is valid even though it was
just invalidated. The goal is only to ensure that (i) a set never claims to be invalid
if it is actually valid, (ii) a set doesn't claim to be valid if it was invalidated
before compilation even began, and (iii) querying the validity of a set doesn't cause us
to crash.

* JavaScriptCore.xcodeproj/project.pbxproj:
* bytecode/Watchpoint.cpp:
(JSC::InlineWatchpointSet::inflateSlow):
* bytecode/Watchpoint.h:
(WatchpointSet):
(InlineWatchpointSet):
(JSC::InlineWatchpointSet::hasBeenInvalidated):
(JSC::InlineWatchpointSet::isThin):
(JSC::InlineWatchpointSet::isFat):
(JSC::InlineWatchpointSet::fat):
* dfg/DFGDesiredWatchpoints.cpp: Added.
(DFG):
(JSC::DFG::DesiredWatchpoints::DesiredWatchpoints):
(JSC::DFG::DesiredWatchpoints::~DesiredWatchpoints):
(JSC::DFG::DesiredWatchpoints::addLazily):
(JSC::DFG::DesiredWatchpoints::reallyAdd):
(JSC::DFG::DesiredWatchpoints::areStillValid):
* dfg/DFGDesiredWatchpoints.h: Added.
(DFG):
(JSC::DFG::WatchpointForGenericWatchpointSet::WatchpointForGenericWatchpointSet):
(WatchpointForGenericWatchpointSet):
(GenericDesiredWatchpoints):
(JSC::DFG::GenericDesiredWatchpoints::GenericDesiredWatchpoints):
(JSC::DFG::GenericDesiredWatchpoints::addLazily):
(JSC::DFG::GenericDesiredWatchpoints::reallyAdd):
(JSC::DFG::GenericDesiredWatchpoints::areStillValid):
(DesiredWatchpoints):
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::link):
(JSC::DFG::JITCompiler::compile):
(JSC::DFG::JITCompiler::compileFunction):
* dfg/DFGJITCompiler.h:
(JSC::DFG::JITCompiler::addLazily):
(JITCompiler):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compilePeepHoleObjectEquality):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::nonSpeculativeNonPeepholeCompareNull):
(JSC::DFG::SpeculativeJIT::nonSpeculativePeepholeBranchNull):
(JSC::DFG::SpeculativeJIT::compileObjectEquality):
(JSC::DFG::SpeculativeJIT::compileObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compilePeepHoleObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compileObjectOrOtherLogicalNot):
(JSC::DFG::SpeculativeJIT::emitObjectOrOtherBranch):
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::nonSpeculativeNonPeepholeCompareNull):
(JSC::DFG::SpeculativeJIT::nonSpeculativePeepholeBranchNull):
(JSC::DFG::SpeculativeJIT::compileObjectEquality):
(JSC::DFG::SpeculativeJIT::compileObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compilePeepHoleObjectToObjectOrOtherEquality):
(JSC::DFG::SpeculativeJIT::compileObjectOrOtherLogicalNot):
(JSC::DFG::SpeculativeJIT::emitObjectOrOtherBranch):
(JSC::DFG::SpeculativeJIT::compile):
* ftl/FTLCompile.cpp:
(JSC::FTL::compile):
* ftl/FTLCompile.h:
(FTL):
* ftl/FTLState.h:
(State):
* runtime/JSFunction.h:
(JSFunction):
(JSC::JSFunction::allocationProfileWatchpointSet):
* runtime/Structure.h:
(Structure):
(JSC::Structure::transitionWatchpointSet):

Source/WTF:

Reviewed by Oliver Hunt.

Harden our notions of memory fences, now that we're doing racy algorithms.

* wtf/Atomics.h:
(WTF):
(WTF::compilerFence):
(WTF::armV7_dmb):
(WTF::armV7_dmb_st):
(WTF::loadLoadFence):
(WTF::loadStoreFence):
(WTF::storeLoadFence):
(WTF::storeStoreFence):
(WTF::memoryBarrierAfterLock):
(WTF::memoryBarrierBeforeUnlock):
(WTF::x86_mfence):


Conflicts:
	Source/WTF/wtf/Atomics.h

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153124 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: value profiles and array profiles should be thread-safe enough to be accessible in a concurrent compilation thread
https://bugs.webkit.org/show_bug.cgi?id=114906

Source/JavaScriptCore:

Reviewed by Oliver Hunt.

This introduces thread safety to value profiles, array profiles, and
array allocation profiles.

We already have three separate operations that happen on profiles:
(1) writing, which the JIT, LLInt, and OSR exit do; (2) updating,
which happens during GC, from OSR entry slow-paths, and in the DFG;
and (3) reading, which happens in the DFG. For example, the JIT/LLInt
and OSR exit write to ValueProfile::m_buckets, which gets synthesized
into ValueProfile::m_prediction (and other fields) during update, and
the latter gets read by the DFG. Note that (2) must also happen in
the DFG since only the DFG knows which code blocks it will inline,
and those blocks' profiles may not have otherwise been updated via
any other mechanism.

I refer to these three operations as writing, updating, and reading.

Consequently, both profile updating and profile reading may happen
asynchronously, if the JIT is asynchronous.

The locking protocol for profiles works as follows:

- Writing does not require locking, but is only allowed on the main
  thread. We require that these fields can be stored atomically by
  the profiling code, even without locks. For value profiles, this
  only works on 64-bit platforms, currently. For array profiles,
  which consist of multiple separate fields, this means that an
  asynchronous update of the profile may see slight inconsistencies
  (like a structure that doesn't quite match the array modes bits),
  but these should be harmless: at worst, the DFG will specialize
  too much and we'll have OSR exits.

- Updating a value profile requires holding a lock, but must assume
  that the fields written by the profiling code in JIT/LLInt may
  be written to without locking.

- Reading a value profile requires holding a lock.

The one major exception to these rules is the ArrayAllocationProfile,
which requires no locking. We do this because it's used so often and
in places where we don't necessarily have access to the owning
CodeBlock, so if we did want it to be locked it would have to have
its own lock. Also, I believe that it is sound to just make this
profile racy and not worry about locking at all. All that was needed
were some changes to ensure that we explicitly read some raced-over
fields only once.

Two additional interesting things in this change:

- To make it easy to see which profile methods require locking, they
  take a const CodeBlockLocker& as an argument. I saw this idiom for
  identifying which methods require which locks to be held being used
  in LLVM, and I quite like it.

- Lazy operand value profiles, which are created lazily and at any
  time, require the CodeBlockLock to be held when they are being
  created. Writes to them are lockless and main-thread-only, but as
  with other profiles, updates and reads require locking.

* JavaScriptCore.xcodeproj/project.pbxproj:
* bytecode/ArrayAllocationProfile.cpp:
(JSC::ArrayAllocationProfile::updateIndexingType):
* bytecode/ArrayAllocationProfile.h:
(JSC::ArrayAllocationProfile::selectIndexingType):
* bytecode/ArrayProfile.cpp:
(JSC::ArrayProfile::computeUpdatedPrediction):
(JSC::ArrayProfile::briefDescription):
* bytecode/ArrayProfile.h:
(ArrayProfile):
(JSC::ArrayProfile::expectedStructure):
(JSC::ArrayProfile::structureIsPolymorphic):
(JSC::ArrayProfile::hasDefiniteStructure):
(JSC::ArrayProfile::observedArrayModes):
(JSC::ArrayProfile::mayInterceptIndexedAccesses):
(JSC::ArrayProfile::mayStoreToHole):
(JSC::ArrayProfile::outOfBounds):
(JSC::ArrayProfile::usesOriginalArrayStructures):
* bytecode/CallLinkStatus.cpp:
(JSC::CallLinkStatus::computeFor):
* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::dumpValueProfiling):
(JSC::CodeBlock::dumpArrayProfiling):
(JSC::CodeBlock::updateAllPredictionsAndCountLiveness):
(JSC::CodeBlock::updateAllArrayPredictions):
* bytecode/CodeBlock.h:
(JSC::CodeBlock::valueProfilePredictionForBytecodeOffset):
(JSC::CodeBlock::updateAllPredictionsAndCheckIfShouldOptimizeNow):
(CodeBlock):
* bytecode/CodeBlockLock.h: Added.
(JSC):
* bytecode/GetByIdStatus.cpp:
(JSC::GetByIdStatus::computeFor):
* bytecode/LazyOperandValueProfile.cpp:
(JSC::CompressedLazyOperandValueProfileHolder::computeUpdatedPredictions):
(JSC::CompressedLazyOperandValueProfileHolder::add):
(JSC::LazyOperandValueProfileParser::LazyOperandValueProfileParser):
(JSC::LazyOperandValueProfileParser::~LazyOperandValueProfileParser):
(JSC):
(JSC::LazyOperandValueProfileParser::initialize):
(JSC::LazyOperandValueProfileParser::prediction):
* bytecode/LazyOperandValueProfile.h:
(CompressedLazyOperandValueProfileHolder):
(LazyOperandValueProfileParser):
* bytecode/MethodOfGettingAValueProfile.cpp:
(JSC::MethodOfGettingAValueProfile::getSpecFailBucket):
* bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeFor):
* bytecode/ResolveGlobalStatus.cpp:
(JSC::ResolveGlobalStatus::computeFor):
* bytecode/ValueProfile.h:
(JSC::ValueProfileBase::briefDescription):
(ValueProfileBase):
(JSC::ValueProfileBase::computeUpdatedPrediction):
* dfg/DFGArrayMode.cpp:
(JSC::DFG::ArrayMode::fromObserved):
* dfg/DFGArrayMode.h:
(ArrayMode):
(JSC::DFG::ArrayMode::withProfile):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::injectLazyOperandSpeculation):
(JSC::DFG::ByteCodeParser::getPredictionWithoutOSRExit):
(JSC::DFG::ByteCodeParser::getArrayMode):
(JSC::DFG::ByteCodeParser::getArrayModeAndEmitChecks):
(JSC::DFG::ByteCodeParser::parseResolveOperations):
(JSC::DFG::ByteCodeParser::parseBlock):
(JSC::DFG::ByteCodeParser::InlineStackEntry::InlineStackEntry):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
* dfg/DFGOSRExitPreparation.cpp:
(JSC::DFG::prepareCodeOriginForOSRExit):
* dfg/DFGPredictionInjectionPhase.cpp:
(JSC::DFG::PredictionInjectionPhase::run):
* jit/JITInlines.h:
(JSC::JIT::chooseArrayMode):
* jit/JITStubs.cpp:
(JSC::tryCachePutByID):
(JSC::tryCacheGetByID):
(JSC::DEFINE_STUB_FUNCTION):
(JSC::lazyLinkFor):
* llint/LLIntSlowPaths.cpp:
(JSC::LLInt::LLINT_SLOW_PATH_DECL):
(JSC::LLInt::setUpCall):
* profiler/ProfilerBytecodeSequence.cpp:
(JSC::Profiler::BytecodeSequence::BytecodeSequence):
* runtime/JSScope.cpp:
(JSC::JSScope::resolveContainingScopeInternal):
(JSC::JSScope::resolvePut):

Source/WTF:

Reviewed by Oliver Hunt.

Add ability to abstract whether or not the CodeBlock requires locking at all,
since some platforms may not support the byte spin-locking and/or may not want
to, if they turn off concurrent JIT.

* WTF.xcodeproj/project.pbxproj:
* wtf/ByteSpinLock.h:
* wtf/NoLock.h: Added.
(WTF):
(NoLock):
(WTF::NoLock::lock):
(WTF::NoLock::unlock):
(WTF::NoLock::isHeld):
* wtf/Platform.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153123 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: all inline caches should thread-safe enough to allow a concurrent compilation thread to read them safely
https://bugs.webkit.org/show_bug.cgi?id=114762

Source/JavaScriptCore:

Reviewed by Mark Hahnenberg.

For most inline caches this is easy: the inline cache has a clean temporal
separation between doing the requested action (which may take an unbounded
amount of time, may recurse, and may do arbitrary things) and recording the
relevant information in the cache. So, we just put locks around the
recording bit. That part is always O(1) and does not recurse. The lock we
use is per-CodeBlock to achieve a good balance between locking granularity
and low space overhead. So a concurrent compilation thread will only block
if an inline cache ping-pongs in the code block being compiled (or inlined)
and never when other inline caches do things.

For resolve operations, it's a bit tricky. The global resolve bit works
like any other IC in that it has the clean temporal separation. But the
operations vector itself doesn't have this separation, since we will be
filling it in tandem with actions that may take a long time. This patch
gets around this by having a m_ready bit in the ResolveOperations and
PutToBaseOperation. This is set while holding the CodeBlock's lock. If the
DFG observes the m_ready bit not set (while holding the lock) then it
conservatively assumes that the resolve hasn't happened yet and just
plants a ForceOSRExit.

* bytecode/CallLinkStatus.cpp:
(JSC::CallLinkStatus::computeFor):
* bytecode/CodeBlock.h:
(CodeBlock):
* bytecode/GetByIdStatus.cpp:
(JSC::GetByIdStatus::computeFor):
* bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeFor):
* bytecode/ResolveGlobalStatus.cpp:
(JSC::ResolveGlobalStatus::computeFor):
* bytecode/ResolveOperation.h:
(JSC::ResolveOperations::ResolveOperations):
(ResolveOperations):
(JSC::PutToBaseOperation::PutToBaseOperation):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::parseResolveOperations):
(JSC::DFG::ByteCodeParser::parseBlock):
* jit/JITStubs.cpp:
(JSC::tryCachePutByID):
(JSC::tryCacheGetByID):
(JSC::DEFINE_STUB_FUNCTION):
(JSC::lazyLinkFor):
* llint/LLIntSlowPaths.cpp:
(JSC::LLInt::LLINT_SLOW_PATH_DECL):
(JSC::LLInt::setUpCall):
* runtime/JSScope.cpp:
(JSC::JSScope::resolveContainingScopeInternal):
(JSC::JSScope::resolveContainingScope):
(JSC::JSScope::resolvePut):

Source/WTF:

Reviewed by Mark Hahnenberg.

Implemented a new spinlock that is optimized for compactness, by using just a byte.
This will be useful as we start using fine-grained locking on a bunch of places.

At some point I'll make these byte-sized spinlocks into adaptive mutexes, but for
now I think it's fine to do the evil thing and use spinning particularly since we
only use them for short critical sections.

* WTF.xcodeproj/project.pbxproj:
* wtf/Atomics.h:
(WTF):
(WTF::weakCompareAndSwap):
* wtf/ByteSpinLock.h: Added.
(WTF):
(ByteSpinLock):
(WTF::ByteSpinLock::ByteSpinLock):
(WTF::ByteSpinLock::lock):
(WTF::ByteSpinLock::unlock):
(WTF::ByteSpinLock::isHeld):
* wtf/ThreadingPrimitives.h:
(WTF::pauseBriefly):
(WTF):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153122 268f45cc-cd09-0410-ab3c-d52691b4dbfc

broken builds.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153121 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114708

Reviewed by Oliver Hunt.

This is work towards allowing the DFG, and FTL, to run on a separate thread.
The idea is that the most evil thing that the DFG does that has thread-safety
issues is fiddling with Structures by calling Structure::get(). This can lead
to rematerialization of property tables, which is definitely not thread-safe
due to how StringImpl works. So, this patch completely side-steps the problem
by creating a new version of Structure::get, called
Structure::getWithoutMaterializing, which may choose to do an O(n) search if
necessary to avoid materialization. I believe this should be fine - the DFG
does't call into these code path often enough for this to matter, and most of
the time, the Structure that we call this on will already have a property
table because some inline cache would have already called ::get() on that
Structure.

Also cleaned up the materialization logic: we can stop the search as soon as
we find any Structure with a property table rather than searching all the way
for a pinned one.

* bytecode/GetByIdStatus.cpp:
(JSC::GetByIdStatus::computeFor):
* bytecode/PutByIdStatus.cpp:
(JSC::PutByIdStatus::computeFromLLInt):
(JSC::PutByIdStatus::computeFor):
* runtime/Structure.cpp:
(JSC::Structure::findStructuresAndMapForMaterialization):
(JSC::Structure::materializePropertyMap):
(JSC::Structure::getWithoutMaterializing):
(JSC):
* runtime/Structure.h:
(Structure):
* runtime/StructureInlines.h:
(JSC::Structure::getWithoutMaterializing):
(JSC):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153120 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114306

Reviewed by Mark Hahnenberg.

Just abstract out some things that the FTL will want to use as well.

* CMakeLists.txt:
* GNUmakefile.list.am:
* JavaScriptCore.xcodeproj/project.pbxproj:
* Target.pri:
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):
* dfg/DFGOSRExitCompiler.cpp:
* dfg/DFGOSRExitCompiler.h:
(OSRExitCompiler):
* dfg/DFGOSRExitCompiler32_64.cpp:
(JSC::DFG::OSRExitCompiler::compileExit):
* dfg/DFGOSRExitCompiler64.cpp:
(JSC::DFG::OSRExitCompiler::compileExit):
* dfg/DFGOSRExitCompilerCommon.cpp: Added.
(DFG):
(JSC::DFG::handleExitCounts):
(JSC::DFG::reifyInlinedCallFrames):
(JSC::DFG::adjustAndJumpToTarget):
* dfg/DFGOSRExitCompilerCommon.h: Added.
(DFG):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153119 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114300

Reviewed by Mark Hahnenberg.

* dfg/DFGFPRInfo.h:
(FPRInfo):
(JSC::DFG::FPRInfo::toArgumentRegister):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153118 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=114073

Reviewed by Mark Hahnenberg.

* dfg/DFGGPRInfo.h:
(GPRInfo):
(JSC::DFG::GPRInfo::toArgumentRegister):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153117 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: put DFG data into a DFG::JITCode, and put common DFG and FTL data into something accessible from both DFG::JITCode and FTL::JITCode
https://bugs.webkit.org/show_bug.cgi?id=113905

Reviewed by Geoffrey Garen.

This removes one pointer from CodeBlock.

It also gives us a framework for having JITType-specific data in CodeBlock, by
putting it into the appropriate JITCode class (either DFG::JITCode or
FTL::JITCode). And it allows us to have DFG and FTL share some common data,
via DFG::CommonData, which is stored in both DFG::JITCode and FTL::JITCode and
always accessible via JITCode::dfgCommon().

* CMakeLists.txt:
* GNUmakefile.list.am:
* JavaScriptCore.xcodeproj/project.pbxproj:
* Target.pri:
* bytecode/CodeBlock.cpp:
(JSC):
(JSC::CodeBlock::dumpBytecode):
(JSC::CodeBlock::visitAggregate):
(JSC::CodeBlock::performTracingFixpointIteration):
(JSC::CodeBlock::finalizeUnconditionally):
(JSC::CodeBlock::stronglyVisitWeakReferences):
(JSC::CodeBlock::shrinkToFit):
(JSC::CodeBlock::tallyFrequentExitSites):
* bytecode/CodeBlock.h:
(CodeBlock):
(JSC::CodeBlock::setJITCode):
(JSC::CodeBlock::shouldImmediatelyAssumeLivenessDuringScan):
(JSC::DFGCodeBlocks::mark):
* dfg/DFGAssemblyHelpers.h:
* dfg/DFGCommonData.cpp: Added.
(DFG):
(JSC::DFG::CommonData::notifyCompilingStructureTransition):
(JSC::DFG::CommonData::shrinkToFit):
* dfg/DFGCommonData.h: Added.
(JSC):
(DFG):
(JSC::DFG::WeakReferenceTransition::WeakReferenceTransition):
(WeakReferenceTransition):
(CommonData):
(JSC::DFG::CommonData::CommonData):
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):
(JSC::DFG::tryCompile):
(JSC::DFG::tryCompileFunction):
* dfg/DFGDriver.h:
(DFG):
(JSC::DFG::tryCompile):
(JSC::DFG::tryCompileFunction):
* dfg/DFGGraph.h:
(Graph):
* dfg/DFGJITCode.cpp: Added.
(DFG):
(JSC::DFG::JITCode::JITCode):
(JSC::DFG::JITCode::~JITCode):
(JSC::DFG::JITCode::dfgCommon):
(JSC::DFG::JITCode::dfg):
(JSC::DFG::JITCode::shrinkToFit):
* dfg/DFGJITCode.h: Added.
(DFG):
(JITCode):
(JSC::DFG::JITCode::appendOSREntryData):
(JSC::DFG::JITCode::osrEntryDataForBytecodeIndex):
(JSC::DFG::JITCode::appendOSRExit):
(JSC::DFG::JITCode::lastOSRExit):
(JSC::DFG::JITCode::appendSpeculationRecovery):
(JSC::DFG::JITCode::appendWatchpoint):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::JITCompiler):
(JSC::DFG::JITCompiler::linkOSRExits):
(JSC::DFG::JITCompiler::link):
(JSC::DFG::JITCompiler::compile):
(JSC::DFG::JITCompiler::compileFunction):
* dfg/DFGJITCompiler.h:
(JITCompiler):
(JSC::DFG::JITCompiler::addWeakReference):
(JSC::DFG::JITCompiler::noticeOSREntry):
(JSC::DFG::JITCompiler::jitCode):
* dfg/DFGOSREntry.cpp:
(JSC::DFG::prepareOSREntry):
* dfg/DFGOSRExit.h:
(OSRExit):
* dfg/DFGOSRExitCompiler.cpp:
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::SpeculativeJIT):
(JSC::DFG::SpeculativeJIT::backwardSpeculationCheck):
(JSC::DFG::SpeculativeJIT::speculationWatchpoint):
(JSC::DFG::SpeculativeJIT::convertLastOSRExitToForward):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGVariableEventStream.cpp:
* ftl/FTLCompile.cpp:
(JSC::FTL::compile):
* ftl/FTLJITCode.cpp:
(JSC::FTL::JITCode::JITCode):
(JSC::FTL::JITCode::~JITCode):
(FTL):
(JSC::FTL::JITCode::initializeCode):
(JSC::FTL::JITCode::addressForCall):
(JSC::FTL::JITCode::executableAddressAtOffset):
(JSC::FTL::JITCode::dataAddressAtOffset):
(JSC::FTL::JITCode::offsetOf):
(JSC::FTL::JITCode::size):
(JSC::FTL::JITCode::contains):
(JSC::FTL::JITCode::ftl):
(JSC::FTL::JITCode::dfgCommon):
* ftl/FTLJITCode.h:
(JITCode):
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::compileStructureTransitionWatchpoint):
(JSC::FTL::LowerDFGToLLVM::compilePutStructure):
(JSC::FTL::LowerDFGToLLVM::compilePhantomPutStructure):
(JSC::FTL::LowerDFGToLLVM::addWeakReference):
(LowerDFGToLLVM):
(JSC::FTL::LowerDFGToLLVM::weakPointer):
* ftl/FTLState.cpp:
(FTL):
(JSC::FTL::State::State):
(JSC::FTL::State::dumpState):
* ftl/FTLState.h:
(State):
* heap/DFGCodeBlocks.cpp:
(JSC::DFGCodeBlocks::~DFGCodeBlocks):
(JSC::DFGCodeBlocks::jettison):
(JSC::DFGCodeBlocks::clearMarks):
(JSC::DFGCodeBlocks::deleteUnmarkedJettisonedCodeBlocks):
(JSC::DFGCodeBlocks::traceMarkedCodeBlocks):
* jit/JITCode.cpp:
(JSC::JITCode::dfgCommon):
(JSC):
(JSC::JITCode::dfg):
(JSC::JITCode::ftl):
(JSC::DirectJITCode::DirectJITCode):
(JSC::DirectJITCode::initializeCodeRef):
(JSC::DirectJITCode::addressForCall):
(JSC::DirectJITCode::executableAddressAtOffset):
(JSC::DirectJITCode::dataAddressAtOffset):
(JSC::DirectJITCode::offsetOf):
(JSC::DirectJITCode::size):
(JSC::DirectJITCode::contains):
* jit/JITCode.h:
(DFG):
(FTL):
(JSC):
(JITCode):
(DirectJITCode):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153116 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=113897

Reviewed by Mark Hahnenberg.

In order to get OSR exit to work right, we need the distinction between DFG and
FTL to be clear even after compilation finishes, since they will have subtly
different OSR stories and likely use different data structures.

* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::resetStubInternal):
(JSC::ProgramCodeBlock::compileOptimized):
(JSC::EvalCodeBlock::compileOptimized):
(JSC::FunctionCodeBlock::compileOptimized):
(JSC::CodeBlock::adjustedExitCountThreshold):
(JSC::CodeBlock::tallyFrequentExitSites):
* bytecode/CodeBlock.h:
(JSC::CodeBlock::setJITCode):
(JSC::CodeBlock::hasOptimizedReplacement):
(JSC::ExecState::isInlineCallFrame):
* ftl/FTLCompile.cpp:
(JSC::FTL::compile):
* ftl/FTLJITCode.cpp:
(JSC::FTL::JITCode::JITCode):
* ftl/FTLState.cpp:
(JSC::FTL::State::dumpState):
* heap/DFGCodeBlocks.cpp:
(JSC::DFGCodeBlocks::jettison):
* interpreter/Interpreter.cpp:
(JSC::getLineNumberForCallFrame):
(JSC::getCallerInfo):
* jit/JITCode.cpp:
(WTF::printInternal):
* jit/JITCode.h:
(JSC::JITCode::topTierJIT):
(JSC::JITCode::nextTierJIT):
(JITCode):
(JSC::JITCode::isJIT):
(JSC::JITCode::isLowerTier):
(JSC::JITCode::isHigherTier):
(JSC::JITCode::isLowerOrSameTier):
(JSC::JITCode::isHigherOrSameTier):
(JSC::JITCode::isOptimizingJIT):
* jit/JITDriver.h:
(JSC::jitCompileIfAppropriate):
(JSC::jitCompileFunctionIfAppropriate):
* jit/JITStubs.cpp:
(JSC::DEFINE_STUB_FUNCTION):
* runtime/Executable.cpp:
(JSC::EvalExecutable::compileOptimized):
(JSC::samplingDescription):
(JSC::ProgramExecutable::compileOptimized):
(JSC::FunctionExecutable::compileOptimizedForCall):
(JSC::FunctionExecutable::compileOptimizedForConstruct):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153115 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=113894

Reviewed by Mark Hahnenberg.

1) We previously had two different ways of convertingToForward, one path for
   where we had a ValueRecovery for the current node and one where we didn't.
   But the paths were doing exactly the same thing except that if you have a
   ValueRecovery, you also find the last applicable mov hint and do some
   extra things. This patch combines the two paths and bases both of them on
   the previous no-ValueRecovery path, which was simpler to begin with.

2) This moves the logic into DFG::OSRExit, which further simplifies the code
   and makes the logic available to the FTL.

* dfg/DFGOSRExit.cpp:
(JSC::DFG::OSRExit::convertToForward):
(DFG):
* dfg/DFGOSRExit.h:
(DFG):
(OSRExit):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::convertLastOSRExitToForward):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153114 268f45cc-cd09-0410-ab3c-d52691b4dbfc

fourthTier: JITCode should abstract exactly how the JIT code is structured and where it was allocated
https://bugs.webkit.org/show_bug.cgi?id=113437

Reviewed by Mark Hahnenberg.

JITCode is now a virtual base class, which will allow different JITs to have radically
different memory allocation and management conventions in the future. It will also
make it easier to store JIT-specific meta-data in CodeBlock just by putting it into
an appropriate JITCode subclass.

For now there is one subclass, DirectJITCode, which just behaves like JITCode used to
behave.

* assembler/RepatchBuffer.h:
(JSC::RepatchBuffer::RepatchBuffer):
* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::resetStubInternal):
(JSC::CodeBlock::bytecodeOffset):
(JSC::CodeBlock::codeOriginForReturn):
* bytecode/CodeBlock.h:
(JSC::CodeBlock::setJITCode):
(JSC::CodeBlock::getJITCode):
(JSC::CodeBlock::getJITType):
(CodeBlock):
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):
(JSC::DFG::tryCompile):
(JSC::DFG::tryCompileFunction):
* dfg/DFGDriver.h:
(DFG):
(JSC::DFG::tryCompile):
(JSC::DFG::tryCompileFunction):
* dfg/DFGJITCompiler.cpp:
(JSC::DFG::JITCompiler::compile):
(JSC::DFG::JITCompiler::compileFunction):
* dfg/DFGJITCompiler.h:
(JITCompiler):
* dfg/DFGOSREntry.cpp:
(JSC::DFG::prepareOSREntry):
* dfg/DFGOSRExit.cpp:
(JSC::DFG::OSRExit::codeLocationForRepatch):
* dfg/DFGOSRExitCompiler32_64.cpp:
(JSC::DFG::OSRExitCompiler::compileExit):
* dfg/DFGOSRExitCompiler64.cpp:
(JSC::DFG::OSRExitCompiler::compileExit):
* dfg/DFGOperations.cpp:
* interpreter/Interpreter.cpp:
(JSC::Interpreter::execute):
(JSC::Interpreter::executeCall):
(JSC::Interpreter::executeConstruct):
* jit/JIT.cpp:
(JSC::JIT::privateCompile):
* jit/JIT.h:
(JSC::JIT::compile):
(JIT):
* jit/JITCode.cpp:
(JSC):
(JSC::JITCode::JITCode):
(JSC::JITCode::~JITCode):
(JSC::JITCode::execute):
(JSC::JITCode::hostFunction):
(JSC::DirectJITCode::DirectJITCode):
(JSC::DirectJITCode::~DirectJITCode):
(JSC::DirectJITCode::addressForCall):
(JSC::DirectJITCode::executableAddressAtOffset):
(JSC::DirectJITCode::dataAddressAtOffset):
(JSC::DirectJITCode::offsetOf):
(JSC::DirectJITCode::size):
(JSC::DirectJITCode::contains):
* jit/JITCode.h:
(JSC):
(JITCode):
(JSC::JITCode::bottomTierJIT):
(JSC::JITCode::topTierJIT):
(JSC::JITCode::nextTierJIT):
(JSC::JITCode::isOptimizingJIT):
(JSC::JITCode::isBaselineCode):
(JSC::JITCode::jitType):
(JSC::JITCode::jitTypeFor):
(JSC::JITCode::executableAddress):
(JSC::JITCode::start):
(JSC::JITCode::end):
(DirectJITCode):
* jit/JITDriver.h:
(JSC::jitCompileIfAppropriate):
(JSC::jitCompileFunctionIfAppropriate):
* jit/JITStubs.cpp:
(JSC::lazyLinkFor):
(JSC::DEFINE_STUB_FUNCTION):
* jit/ThunkGenerators.cpp:
(JSC::virtualForGenerator):
* llint/LLIntEntrypoints.cpp:
(JSC::LLInt::getFunctionEntrypoint):
(JSC::LLInt::getEvalEntrypoint):
(JSC::LLInt::getProgramEntrypoint):
* llint/LLIntEntrypoints.h:
(JSC):
(LLInt):
(JSC::LLInt::getEntrypoint):
* llint/LLIntSlowPaths.cpp:
(JSC::LLInt::jitCompileAndSetHeuristics):
(JSC::LLInt::entryOSR):
(JSC::LLInt::LLINT_SLOW_PATH_DECL):
* runtime/Executable.cpp:
(JSC::EvalExecutable::compileInternal):
(JSC::ProgramExecutable::compileInternal):
(JSC::FunctionExecutable::compileForCallInternal):
(JSC::FunctionExecutable::compileForConstructInternal):
* runtime/Executable.h:
(JSC::ExecutableBase::generatedJITCodeForCall):
(JSC::ExecutableBase::generatedJITCodeForConstruct):
(JSC::ExecutableBase::generatedJITCodeFor):
(ExecutableBase):
(JSC::ExecutableBase::hostCodeEntryFor):
(JSC::ExecutableBase::jsCodeEntryFor):
(JSC::ExecutableBase::jsCodeWithArityCheckEntryFor):
(JSC::NativeExecutable::create):
(JSC::NativeExecutable::finishCreation):
(JSC::EvalExecutable::generatedJITCode):
(JSC::ProgramExecutable::generatedJITCode):
* runtime/ExecutionHarness.h:
(JSC::prepareForExecution):
(JSC::prepareFunctionForExecution):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153113 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=119072

Reviewed by Beth Dakin.

MediaControlTextTrackContainerElement::createTextTrackRepresentationImage() is called
to paint captions into a layer used for fullscreen video. It did the painting using
a subtree paint, but starting at the root RenderView's layer. This is problematic,
because the caption painting is subject to clipping for columns, and any enclosing
overflow:hidden container.

Fix this by starting the paint at the MediaControlTextTrackContainerElement's
renderer's layer. By doing this we don't have to worry about an offset, so no
translation is required.

Also make sure we update layer before grabbing the renderer (in case layout
destroys it).

* html/shadow/MediaControlElements.cpp:
(WebCore::MediaControlTextTrackContainerElement::createTextTrackRepresentationImage):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153112 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Add DRT test to ensure don't override z-index for overflow: scroll, -webkit-overflow-scrolling: touch
https://bugs.webkit.org/show_bug.cgi?id=119071

Reviewed by Simon Fraser.

Add a DRT test to ensure we don't regress the fix for <https://bugs.webkit.org/show_bug.cgi?id=119066>.

* compositing/overflow/should-not-override-z-index-for-element-with-non-auto-z-index-and-overflow-scroll-and-touch-expected.txt: Added.
* compositing/overflow/should-not-override-z-index-for-element-with-non-auto-z-index-and-overflow-scroll-and-touch.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153111 268f45cc-cd09-0410-ab3c-d52691b4dbfc

<rdar://problem/14528039> and https://bugs.webkit.org/show_bug.cgi?id=119025

Reviewed by Brady Eidson.

Renamed WebColorChooserProxy to WebColorPicker since the name WebColorChoooserProxy
implies that it represents the same object as WebColorChooser, which is not true.
Also, renamed createColorChooserProxy to createColorPicker in WebPageProxy and
platform-equivalent versions of it.

* CMakeLists.txt:
* GNUmakefile.list.am:
* Target.pri:
* UIProcess/API/gtk/PageClientImpl.cpp:
(WebKit::PageClientImpl::createColorPicker):
* UIProcess/API/gtk/PageClientImpl.h:
* UIProcess/API/mac/PageClientImpl.h:
* UIProcess/API/mac/PageClientImpl.mm:
(WebKit::PageClientImpl::createColorPicker):
* UIProcess/API/qt/raw/qrawwebview.cpp:
(QRawWebViewPrivate::createColorPicker):
* UIProcess/API/qt/raw/qrawwebview_p_p.h:
* UIProcess/CoordinatedGraphics/WebView.cpp:
(WebKit::WebView::createColorPicker):
* UIProcess/CoordinatedGraphics/WebView.h:
* UIProcess/PageClient.h:
* UIProcess/WebColorChooserProxy.cpp: Removed.
* UIProcess/WebColorChooserProxy.h: Removed.
* UIProcess/WebColorPicker.cpp: Copied from Source/WebKit2/UIProcess/WebColorChooserProxy.cpp.
(WebKit::WebColorPicker::WebColorPicker):
(WebKit::WebColorPicker::~WebColorPicker):
(WebKit::WebColorPicker::endChooser):
(WebKit::WebColorPicker::setSelectedColor):
* UIProcess/WebColorPicker.h: Copied from Source/WebKit2/UIProcess/WebColorChooserProxy.h.
(WebKit::WebColorPicker::create):
* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::close):
(WebKit::WebPageProxy::showColorChooser):
(WebKit::WebPageProxy::setColorChooserColor):
(WebKit::WebPageProxy::endColorChooser):
(WebKit::WebPageProxy::didEndColorChooser):
(WebKit::WebPageProxy::resetStateAfterProcessExited):
* UIProcess/WebPageProxy.h: Renamed m_colorChooser to m_colorPicker.
* UIProcess/qt/QtPageClient.cpp:
(WebKit::QtPageClient::createColorPicker):
* UIProcess/qt/QtPageClient.h:
* UIProcess/qt/WebColorChooserProxyQt.cpp: Removed.
* UIProcess/qt/WebColorChooserProxyQt.h: Removed.
* UIProcess/qt/WebColorPickerQt.cpp: Added.
(WebKit::ColorChooserContextObject::ColorChooserContextObject):
(WebKit::ColorChooserContextObject::currentColor):
(WebKit::ColorChooserContextObject::elementRect):
(WebKit::ColorChooserContextObject::accept):
(WebKit::ColorChooserContextObject::reject):
(WebKit::WebColorPickerQt::WebColorPickerQt):
(WebKit::WebColorPickerQt::~WebColorPickerQt):
(WebKit::WebColorPickerQt::createItem):
(WebKit::WebColorPickerQt::createContext):
(WebKit::WebColorPickerQt::setSelectedColor):
(WebKit::WebColorPickerQt::notifyColorSelected):
(WebKit::WebColorPickerQt::endChooser):
* UIProcess/qt/WebColorPickerQt.h: Added.
(WebKit::WebColorPickerQt::create):
* WebKit2.xcodeproj/project.pbxproj:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153108 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=119069
<rdar://problem/14494064>

Reviewed by Andreas Kling.

Source/WebKit2:

* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::processIdentifier):
Check if the page is closed instead of checking whether we have a process - We'll always have a process.

(WebKit::WebPageProxy::isValid):
Make this const.

* UIProcess/WebPageProxy.h:

Tools:

Add a test.

* TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:
* TestWebKitAPI/Tests/WebKit2/mac/GetPIDAfterAbortedProcessLaunch.cpp: Added.
(TestWebKitAPI::didFinishLoadForFrame):
(TestWebKitAPI::TEST):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153107 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=110136

Reviewed by Gustavo Noronha Silva.

Original patch by Balazs Kelemen <kbalazs@webkit.org>.

Added a common entry point for non-Mac Unix ports.

* NetworkProcess/unix/NetworkProcessMainUnix.cpp: Added.
(WebKit::NetworkProcessMain):
* NetworkProcess/unix/NetworkProcessMainUnix.h: Added.
* unix/NetworkMainUnix.cpp: Added.
(main):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153106 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=119066
<rdar://problem/14499184>

Reviewed by Daniel Bates.

Following <http://trac.webkit.org/changeset/152335> (bug #118337) we set
the z-index to 0 on every element with CSS "overflow: scroll" and
"-webkit-overflow-scrolling: touch" regardless of whether the element has
non-auto z-index. Instead we should only set the z-index to 0 for such elements
that have an auto z-index.

* css/StyleResolver.cpp:
(WebCore::StyleResolver::adjustRenderStyle):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153105 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=119065

Reviewed by Mark Hahnenberg.
        
Made the body of IndexingHeader be a union.
        
Modified the offlineasm so that you can say IndexingHeader::u.lengths.publicLength.
Previously those dots would cause parse errors. Now an identifier in offlineasm can
have a dot anywhere except the first character.

* llint/LowLevelInterpreter32_64.asm:
* llint/LowLevelInterpreter64.asm:
* offlineasm/parser.rb:
* runtime/IndexingHeader.h:
(JSC::IndexingHeader::offsetOfPublicLength):
(JSC::IndexingHeader::offsetOfVectorLength):
(JSC::IndexingHeader::IndexingHeader):
(JSC::IndexingHeader::vectorLength):
(JSC::IndexingHeader::setVectorLength):
(JSC::IndexingHeader::publicLength):
(JSC::IndexingHeader::setPublicLength):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153104 268f45cc-cd09-0410-ab3c-d52691b4dbfc

https://bugs.webkit.org/show_bug.cgi?id=118627

Reviewed by Oliver Hunt.
        
Merge https://chromium.googlesource.com/chromium/blink/+/b6471d077e012b05ccba14d0ce8e6d616106c8e6

Unfortunately, there is no test case for this bug.

* editing/ApplyStyleCommand.cpp:
(WebCore::ApplyStyleCommand::removeInlineStyle):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153102 268f45cc-cd09-0410-ab3c-d52691b4dbfc