1. 22 Feb, 2012 1 commit
    • fpizlo@apple.com's avatar
      JSC should be a triple-tier VM · 7bbcaab7
      fpizlo@apple.com authored
      https://bugs.webkit.org/show_bug.cgi?id=75812
      <rdar://problem/10079694>
      
      Source/JavaScriptCore: 
      
      Reviewed by Gavin Barraclough.
              
      Implemented an interpreter that uses the JIT's calling convention. This
      interpreter is called LLInt, or the Low Level Interpreter. JSC will now
      will start by executing code in LLInt and will only tier up to the old
      JIT after the code is proven hot.
              
      LLInt is written in a modified form of our macro assembly. This new macro
      assembly is compiled by an offline assembler (see offlineasm), which
      implements many modern conveniences such as a Turing-complete CPS-based
      macro language and direct access to relevant C++ type information
      (basically offsets of fields and sizes of structs/classes).
              
      Code executing in LLInt appears to the rest of the JSC world "as if" it
      were executing in the old JIT. Hence, things like exception handling and
      cross-execution-engine calls just work and require pretty much no
      additional overhead.
              
      This interpreter is 2-2.5x faster than our old interpreter on SunSpider,
      V8, and Kraken. With triple-tiering turned on, we're neutral on SunSpider,
      V8, and Kraken, but appear to get a double-digit improvement on real-world
      websites due to a huge reduction in the amount of JIT'ing.
              
      * CMakeLists.txt:
      * GNUmakefile.am:
      * GNUmakefile.list.am:
      * JavaScriptCore.pri:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreCommon.vsprops:
      * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
      * JavaScriptCore.xcodeproj/project.pbxproj:
      * Target.pri:
      * assembler/LinkBuffer.h:
      * assembler/MacroAssemblerCodeRef.h:
      (MacroAssemblerCodePtr):
      (JSC::MacroAssemblerCodePtr::createFromExecutableAddress):
      * bytecode/BytecodeConventions.h: Added.
      * bytecode/CallLinkStatus.cpp:
      (JSC::CallLinkStatus::computeFromLLInt):
      (JSC):
      (JSC::CallLinkStatus::computeFor):
      * bytecode/CallLinkStatus.h:
      (JSC::CallLinkStatus::isSet):
      (JSC::CallLinkStatus::operator!):
      (CallLinkStatus):
      * bytecode/CodeBlock.cpp:
      (JSC::CodeBlock::dump):
      (JSC::CodeBlock::CodeBlock):
      (JSC::CodeBlock::~CodeBlock):
      (JSC::CodeBlock::finalizeUnconditionally):
      (JSC::CodeBlock::stronglyVisitStrongReferences):
      (JSC):
      (JSC::CodeBlock::unlinkCalls):
      (JSC::CodeBlock::unlinkIncomingCalls):
      (JSC::CodeBlock::bytecodeOffset):
      (JSC::ProgramCodeBlock::jettison):
      (JSC::EvalCodeBlock::jettison):
      (JSC::FunctionCodeBlock::jettison):
      (JSC::ProgramCodeBlock::jitCompileImpl):
      (JSC::EvalCodeBlock::jitCompileImpl):
      (JSC::FunctionCodeBlock::jitCompileImpl):
      * bytecode/CodeBlock.h:
      (JSC):
      (CodeBlock):
      (JSC::CodeBlock::baselineVersion):
      (JSC::CodeBlock::linkIncomingCall):
      (JSC::CodeBlock::bytecodeOffset):
      (JSC::CodeBlock::jitCompile):
      (JSC::CodeBlock::hasOptimizedReplacement):
      (JSC::CodeBlock::addPropertyAccessInstruction):
      (JSC::CodeBlock::addGlobalResolveInstruction):
      (JSC::CodeBlock::addLLIntCallLinkInfo):
      (JSC::CodeBlock::addGlobalResolveInfo):
      (JSC::CodeBlock::numberOfMethodCallLinkInfos):
      (JSC::CodeBlock::valueProfilePredictionForBytecodeOffset):
      (JSC::CodeBlock::likelyToTakeSlowCase):
      (JSC::CodeBlock::couldTakeSlowCase):
      (JSC::CodeBlock::likelyToTakeSpecialFastCase):
      (JSC::CodeBlock::likelyToTakeDeepestSlowCase):
      (JSC::CodeBlock::likelyToTakeAnySlowCase):
      (JSC::CodeBlock::addFrequentExitSite):
      (JSC::CodeBlock::dontJITAnytimeSoon):
      (JSC::CodeBlock::jitAfterWarmUp):
      (JSC::CodeBlock::jitSoon):
      (JSC::CodeBlock::llintExecuteCounter):
      (ProgramCodeBlock):
      (EvalCodeBlock):
      (FunctionCodeBlock):
      * bytecode/GetByIdStatus.cpp:
      (JSC::GetByIdStatus::computeFromLLInt):
      (JSC):
      (JSC::GetByIdStatus::computeFor):
      * bytecode/GetByIdStatus.h:
      (JSC::GetByIdStatus::GetByIdStatus):
      (JSC::GetByIdStatus::wasSeenInJIT):
      (GetByIdStatus):
      * bytecode/Instruction.h:
      (JSC):
      (JSC::Instruction::Instruction):
      (Instruction):
      * bytecode/LLIntCallLinkInfo.h: Added.
      (JSC):
      (JSC::LLIntCallLinkInfo::LLIntCallLinkInfo):
      (LLIntCallLinkInfo):
      (JSC::LLIntCallLinkInfo::~LLIntCallLinkInfo):
      (JSC::LLIntCallLinkInfo::isLinked):
      (JSC::LLIntCallLinkInfo::unlink):
      * bytecode/MethodCallLinkStatus.cpp:
      (JSC::MethodCallLinkStatus::computeFor):
      * bytecode/Opcode.cpp:
      (JSC):
      * bytecode/Opcode.h:
      (JSC):
      (JSC::padOpcodeName):
      * bytecode/PutByIdStatus.cpp:
      (JSC::PutByIdStatus::computeFromLLInt):
      (JSC):
      (JSC::PutByIdStatus::computeFor):
      * bytecode/PutByIdStatus.h:
      (PutByIdStatus):
      * 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):
      * dfg/DFGByteCodeParser.cpp:
      (JSC::DFG::ByteCodeParser::getPredictionWithoutOSRExit):
      (JSC::DFG::ByteCodeParser::handleInlining):
      (JSC::DFG::ByteCodeParser::parseBlock):
      * dfg/DFGCapabilities.h:
      (JSC::DFG::canCompileOpcode):
      * dfg/DFGOSRExitCompiler.cpp:
      * dfg/DFGOperations.cpp:
      * heap/Heap.h:
      (JSC):
      (JSC::Heap::firstAllocatorWithoutDestructors):
      (Heap):
      * heap/MarkStack.cpp:
      (JSC::visitChildren):
      * heap/MarkedAllocator.h:
      (JSC):
      (MarkedAllocator):
      * heap/MarkedSpace.h:
      (JSC):
      (MarkedSpace):
      (JSC::MarkedSpace::firstAllocator):
      * interpreter/CallFrame.cpp:
      (JSC):
      (JSC::CallFrame::bytecodeOffsetForNonDFGCode):
      (JSC::CallFrame::setBytecodeOffsetForNonDFGCode):
      (JSC::CallFrame::currentVPC):
      (JSC::CallFrame::setCurrentVPC):
      (JSC::CallFrame::trueCallerFrame):
      * interpreter/CallFrame.h:
      (JSC::ExecState::hasReturnPC):
      (JSC::ExecState::clearReturnPC):
      (ExecState):
      (JSC::ExecState::bytecodeOffsetForNonDFGCode):
      (JSC::ExecState::currentVPC):
      (JSC::ExecState::setCurrentVPC):
      * interpreter/Interpreter.cpp:
      (JSC::Interpreter::Interpreter):
      (JSC::Interpreter::~Interpreter):
      (JSC):
      (JSC::Interpreter::initialize):
      (JSC::Interpreter::isOpcode):
      (JSC::Interpreter::unwindCallFrame):
      (JSC::getCallerInfo):
      (JSC::Interpreter::privateExecute):
      (JSC::Interpreter::retrieveLastCaller):
      * interpreter/Interpreter.h:
      (JSC):
      (Interpreter):
      (JSC::Interpreter::getOpcode):
      (JSC::Interpreter::getOpcodeID):
      (JSC::Interpreter::classicEnabled):
      * interpreter/RegisterFile.h:
      (JSC):
      (RegisterFile):
      * jit/ExecutableAllocator.h:
      (JSC):
      * jit/HostCallReturnValue.cpp: Added.
      (JSC):
      (JSC::getHostCallReturnValueWithExecState):
      * jit/HostCallReturnValue.h: Added.
      (JSC):
      (JSC::initializeHostCallReturnValue):
      * jit/JIT.cpp:
      (JSC::JIT::privateCompileMainPass):
      (JSC::JIT::privateCompileSlowCases):
      (JSC::JIT::privateCompile):
      * jit/JITCode.h:
      (JSC::JITCode::isOptimizingJIT):
      (JITCode):
      (JSC::JITCode::isBaselineCode):
      (JSC::JITCode::JITCode):
      * jit/JITDriver.h:
      (JSC::jitCompileIfAppropriate):
      (JSC::jitCompileFunctionIfAppropriate):
      * jit/JITExceptions.cpp:
      (JSC::jitThrow):
      * jit/JITInlineMethods.h:
      (JSC::JIT::updateTopCallFrame):
      * jit/JITStubs.cpp:
      (JSC::DEFINE_STUB_FUNCTION):
      (JSC):
      * jit/JITStubs.h:
      (JSC):
      * jit/JSInterfaceJIT.h:
      * llint: Added.
      * llint/LLIntCommon.h: Added.
      * llint/LLIntData.cpp: Added.
      (LLInt):
      (JSC::LLInt::Data::Data):
      (JSC::LLInt::Data::performAssertions):
      (JSC::LLInt::Data::~Data):
      * llint/LLIntData.h: Added.
      (JSC):
      (LLInt):
      (Data):
      (JSC::LLInt::Data::exceptionInstructions):
      (JSC::LLInt::Data::opcodeMap):
      (JSC::LLInt::Data::performAssertions):
      * llint/LLIntEntrypoints.cpp: Added.
      (LLInt):
      (JSC::LLInt::getFunctionEntrypoint):
      (JSC::LLInt::getEvalEntrypoint):
      (JSC::LLInt::getProgramEntrypoint):
      * llint/LLIntEntrypoints.h: Added.
      (JSC):
      (LLInt):
      (JSC::LLInt::getEntrypoint):
      * llint/LLIntExceptions.cpp: Added.
      (LLInt):
      (JSC::LLInt::interpreterThrowInCaller):
      (JSC::LLInt::returnToThrowForThrownException):
      (JSC::LLInt::returnToThrow):
      (JSC::LLInt::callToThrow):
      * llint/LLIntExceptions.h: Added.
      (JSC):
      (LLInt):
      * llint/LLIntOfflineAsmConfig.h: Added.
      * llint/LLIntOffsetsExtractor.cpp: Added.
      (JSC):
      (LLIntOffsetsExtractor):
      (JSC::LLIntOffsetsExtractor::dummy):
      (main):
      * llint/LLIntSlowPaths.cpp: Added.
      (LLInt):
      (JSC::LLInt::llint_trace_operand):
      (JSC::LLInt::llint_trace_value):
      (JSC::LLInt::LLINT_SLOW_PATH_DECL):
      (JSC::LLInt::traceFunctionPrologue):
      (JSC::LLInt::shouldJIT):
      (JSC::LLInt::entryOSR):
      (JSC::LLInt::resolveGlobal):
      (JSC::LLInt::getByVal):
      (JSC::LLInt::handleHostCall):
      (JSC::LLInt::setUpCall):
      (JSC::LLInt::genericCall):
      * llint/LLIntSlowPaths.h: Added.
      (JSC):
      (LLInt):
      * llint/LLIntThunks.cpp: Added.
      (LLInt):
      (JSC::LLInt::generateThunkWithJumpTo):
      (JSC::LLInt::functionForCallEntryThunkGenerator):
      (JSC::LLInt::functionForConstructEntryThunkGenerator):
      (JSC::LLInt::functionForCallArityCheckThunkGenerator):
      (JSC::LLInt::functionForConstructArityCheckThunkGenerator):
      (JSC::LLInt::evalEntryThunkGenerator):
      (JSC::LLInt::programEntryThunkGenerator):
      * llint/LLIntThunks.h: Added.
      (JSC):
      (LLInt):
      * llint/LowLevelInterpreter.asm: Added.
      * llint/LowLevelInterpreter.cpp: Added.
      * llint/LowLevelInterpreter.h: Added.
      * offlineasm: Added.
      * offlineasm/armv7.rb: Added.
      * offlineasm/asm.rb: Added.
      * offlineasm/ast.rb: Added.
      * offlineasm/backends.rb: Added.
      * offlineasm/generate_offset_extractor.rb: Added.
      * offlineasm/instructions.rb: Added.
      * offlineasm/offset_extractor_constants.rb: Added.
      * offlineasm/offsets.rb: Added.
      * offlineasm/opt.rb: Added.
      * offlineasm/parser.rb: Added.
      * offlineasm/registers.rb: Added.
      * offlineasm/self_hash.rb: Added.
      * offlineasm/settings.rb: Added.
      * offlineasm/transform.rb: Added.
      * offlineasm/x86.rb: Added.
      * runtime/CodeSpecializationKind.h: Added.
      (JSC):
      * runtime/CommonSlowPaths.h:
      (JSC::CommonSlowPaths::arityCheckFor):
      (CommonSlowPaths):
      * runtime/Executable.cpp:
      (JSC::jettisonCodeBlock):
      (JSC):
      (JSC::EvalExecutable::jitCompile):
      (JSC::samplingDescription):
      (JSC::EvalExecutable::compileInternal):
      (JSC::ProgramExecutable::jitCompile):
      (JSC::ProgramExecutable::compileInternal):
      (JSC::FunctionExecutable::baselineCodeBlockFor):
      (JSC::FunctionExecutable::jitCompileForCall):
      (JSC::FunctionExecutable::jitCompileForConstruct):
      (JSC::FunctionExecutable::compileForCallInternal):
      (JSC::FunctionExecutable::compileForConstructInternal):
      * runtime/Executable.h:
      (JSC):
      (EvalExecutable):
      (ProgramExecutable):
      (FunctionExecutable):
      (JSC::FunctionExecutable::jitCompileFor):
      * runtime/ExecutionHarness.h: Added.
      (JSC):
      (JSC::prepareForExecution):
      (JSC::prepareFunctionForExecution):
      * runtime/JSArray.h:
      (JSC):
      (JSArray):
      * runtime/JSCell.h:
      (JSC):
      (JSCell):
      * runtime/JSFunction.h:
      (JSC):
      (JSFunction):
      * runtime/JSGlobalData.cpp:
      (JSC::JSGlobalData::JSGlobalData):
      * runtime/JSGlobalData.h:
      (JSC):
      (JSGlobalData):
      * runtime/JSGlobalObject.h:
      (JSC):
      (JSGlobalObject):
      * runtime/JSObject.h:
      (JSC):
      (JSObject):
      (JSFinalObject):
      * runtime/JSPropertyNameIterator.h:
      (JSC):
      (JSPropertyNameIterator):
      * runtime/JSString.h:
      (JSC):
      (JSString):
      * runtime/JSTypeInfo.h:
      (JSC):
      (TypeInfo):
      * runtime/JSValue.cpp:
      (JSC::JSValue::description):
      * runtime/JSValue.h:
      (LLInt):
      (JSValue):
      * runtime/JSVariableObject.h:
      (JSC):
      (JSVariableObject):
      * runtime/Options.cpp:
      (Options):
      (JSC::Options::initializeOptions):
      * runtime/Options.h:
      (Options):
      * runtime/ScopeChain.h:
      (JSC):
      (ScopeChainNode):
      * runtime/Structure.cpp:
      (JSC::Structure::addPropertyTransition):
      * runtime/Structure.h:
      (JSC):
      (Structure):
      * runtime/StructureChain.h:
      (JSC):
      (StructureChain):
      * wtf/InlineASM.h:
      * wtf/Platform.h:
      * wtf/SentinelLinkedList.h:
      (SentinelLinkedList):
      (WTF::SentinelLinkedList::isEmpty):
      * wtf/text/StringImpl.h:
      (JSC):
      (StringImpl):
      
      Source/WebCore: 
      
      Reviewed by Gavin Barraclough.
              
      No new tests, because there is no change in behavior.
      
      * CMakeLists.txt:
      
      Source/WebKit: 
      
      Reviewed by Gavin Barraclough.
      
      Changed EFL's build system to include a new directory in JavaScriptCore.
              
      * CMakeLists.txt:
      
      Tools: 
      
      Reviewed by Gavin Barraclough.
      
      Changed EFL's build system to include a new directory in JavaScriptCore.
      
      * DumpRenderTree/efl/CMakeLists.txt:
      
      
      
      git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108444 268f45cc-cd09-0410-ab3c-d52691b4dbfc
      7bbcaab7
  2. 21 Feb, 2012 2 commits
    • aroben@apple.com's avatar
      Roll out r108309, r108323, and r108326 · e089d623
      aroben@apple.com authored
      They broke the 32-bit Lion build.
      
      Original bugs is <http://webkit.org/b/75812> <rdar://problem/10079694>.
      
      Source/JavaScriptCore:
      
      * CMakeLists.txt:
      * GNUmakefile.am:
      * GNUmakefile.list.am:
      * JavaScriptCore.pri:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreCommon.vsprops:
      * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
      * JavaScriptCore.xcodeproj/project.pbxproj:
      * Target.pri:
      * assembler/LinkBuffer.h:
      * assembler/MacroAssemblerCodeRef.h:
      * bytecode/BytecodeConventions.h: Removed.
      * bytecode/CallLinkStatus.cpp:
      * bytecode/CallLinkStatus.h:
      * bytecode/CodeBlock.cpp:
      * bytecode/CodeBlock.h:
      * bytecode/GetByIdStatus.cpp:
      * bytecode/GetByIdStatus.h:
      * bytecode/Instruction.h:
      * bytecode/LLIntCallLinkInfo.h: Removed.
      * bytecode/MethodCallLinkStatus.cpp:
      * bytecode/Opcode.cpp:
      * bytecode/Opcode.h:
      * bytecode/PutByIdStatus.cpp:
      * bytecode/PutByIdStatus.h:
      * bytecompiler/BytecodeGenerator.cpp:
      * dfg/DFGByteCodeParser.cpp:
      * dfg/DFGCapabilities.h:
      * dfg/DFGOSRExitCompiler.cpp:
      * dfg/DFGOperations.cpp:
      * heap/Heap.h:
      * heap/MarkStack.cpp:
      * heap/MarkedAllocator.h:
      * heap/MarkedSpace.h:
      * interpreter/CallFrame.cpp:
      * interpreter/CallFrame.h:
      * interpreter/Interpreter.cpp:
      * interpreter/Interpreter.h:
      * interpreter/RegisterFile.h:
      * jit/ExecutableAllocator.h:
      * jit/HostCallReturnValue.cpp: Removed.
      * jit/HostCallReturnValue.h: Removed.
      * jit/JIT.cpp:
      * jit/JITCode.h:
      * jit/JITDriver.h:
      * jit/JITExceptions.cpp:
      * jit/JITInlineMethods.h:
      * jit/JITStubs.cpp:
      * jit/JITStubs.h:
      * jit/JSInterfaceJIT.h:
      * llint/LLIntCommon.h: Removed.
      * llint/LLIntData.cpp: Removed.
      * llint/LLIntData.h: Removed.
      * llint/LLIntEntrypoints.cpp: Removed.
      * llint/LLIntEntrypoints.h: Removed.
      * llint/LLIntExceptions.cpp: Removed.
      * llint/LLIntExceptions.h: Removed.
      * llint/LLIntOfflineAsmConfig.h: Removed.
      * llint/LLIntOffsetsExtractor.cpp: Removed.
      * llint/LLIntSlowPaths.cpp: Removed.
      * llint/LLIntSlowPaths.h: Removed.
      * llint/LLIntThunks.cpp: Removed.
      * llint/LLIntThunks.h: Removed.
      * llint/LowLevelInterpreter.asm: Removed.
      * llint/LowLevelInterpreter.cpp: Removed.
      * llint/LowLevelInterpreter.h: Removed.
      * offlineasm/armv7.rb: Removed.
      * offlineasm/asm.rb: Removed.
      * offlineasm/ast.rb: Removed.
      * offlineasm/backends.rb: Removed.
      * offlineasm/generate_offset_extractor.rb: Removed.
      * offlineasm/instructions.rb: Removed.
      * offlineasm/offset_extractor_constants.rb: Removed.
      * offlineasm/offsets.rb: Removed.
      * offlineasm/opt.rb: Removed.
      * offlineasm/parser.rb: Removed.
      * offlineasm/registers.rb: Removed.
      * offlineasm/self_hash.rb: Removed.
      * offlineasm/settings.rb: Removed.
      * offlineasm/transform.rb: Removed.
      * offlineasm/x86.rb: Removed.
      * runtime/CodeSpecializationKind.h: Removed.
      * runtime/CommonSlowPaths.h:
      * runtime/Executable.cpp:
      * runtime/Executable.h:
      * runtime/ExecutionHarness.h: Removed.
      * runtime/JSArray.h:
      * runtime/JSCell.h:
      * runtime/JSFunction.h:
      * runtime/JSGlobalData.cpp:
      * runtime/JSGlobalData.h:
      * runtime/JSGlobalObject.h:
      * runtime/JSObject.h:
      * runtime/JSPropertyNameIterator.h:
      * runtime/JSString.h:
      * runtime/JSTypeInfo.h:
      * runtime/JSValue.cpp:
      * runtime/JSValue.h:
      * runtime/JSVariableObject.h:
      * runtime/Options.cpp:
      * runtime/Options.h:
      * runtime/ScopeChain.h:
      * runtime/Structure.cpp:
      * runtime/Structure.h:
      * runtime/StructureChain.h:
      * wtf/InlineASM.h:
      * wtf/Platform.h:
      * wtf/SentinelLinkedList.h:
      * wtf/text/StringImpl.h:
      
      Source/WebCore:
      
      * CMakeLists.txt:
      
      Source/WebKit:
      
      * CMakeLists.txt:
      
      Tools:
      
      * DumpRenderTree/efl/CMakeLists.txt:
      
      git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108358 268f45cc-cd09-0410-ab3c-d52691b4dbfc
      e089d623
    • fpizlo@apple.com's avatar
      JSC should be a triple-tier VM · 091129f4
      fpizlo@apple.com authored
      https://bugs.webkit.org/show_bug.cgi?id=75812
      <rdar://problem/10079694>
      
      Source/JavaScriptCore: 
      
      Reviewed by Gavin Barraclough.
              
      Implemented an interpreter that uses the JIT's calling convention. This
      interpreter is called LLInt, or the Low Level Interpreter. JSC will now
      will start by executing code in LLInt and will only tier up to the old
      JIT after the code is proven hot.
              
      LLInt is written in a modified form of our macro assembly. This new macro
      assembly is compiled by an offline assembler (see offlineasm), which
      implements many modern conveniences such as a Turing-complete CPS-based
      macro language and direct access to relevant C++ type information
      (basically offsets of fields and sizes of structs/classes).
              
      Code executing in LLInt appears to the rest of the JSC world "as if" it
      were executing in the old JIT. Hence, things like exception handling and
      cross-execution-engine calls just work and require pretty much no
      additional overhead.
              
      This interpreter is 2-2.5x faster than our old interpreter on SunSpider,
      V8, and Kraken. With triple-tiering turned on, we're neutral on SunSpider,
      V8, and Kraken, but appear to get a double-digit improvement on real-world
      websites due to a huge reduction in the amount of JIT'ing.
              
      * CMakeLists.txt:
      * GNUmakefile.am:
      * GNUmakefile.list.am:
      * JavaScriptCore.pri:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCoreCommon.vsprops:
      * JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
      * JavaScriptCore.xcodeproj/project.pbxproj:
      * Target.pri:
      * assembler/LinkBuffer.h:
      * assembler/MacroAssemblerCodeRef.h:
      (MacroAssemblerCodePtr):
      (JSC::MacroAssemblerCodePtr::createFromExecutableAddress):
      * bytecode/BytecodeConventions.h: Added.
      * bytecode/CallLinkStatus.cpp:
      (JSC::CallLinkStatus::computeFromLLInt):
      (JSC):
      (JSC::CallLinkStatus::computeFor):
      * bytecode/CallLinkStatus.h:
      (JSC::CallLinkStatus::isSet):
      (JSC::CallLinkStatus::operator!):
      (CallLinkStatus):
      * bytecode/CodeBlock.cpp:
      (JSC::CodeBlock::dump):
      (JSC::CodeBlock::CodeBlock):
      (JSC::CodeBlock::~CodeBlock):
      (JSC::CodeBlock::finalizeUnconditionally):
      (JSC::CodeBlock::stronglyVisitStrongReferences):
      (JSC):
      (JSC::CodeBlock::unlinkCalls):
      (JSC::CodeBlock::unlinkIncomingCalls):
      (JSC::CodeBlock::bytecodeOffset):
      (JSC::ProgramCodeBlock::jettison):
      (JSC::EvalCodeBlock::jettison):
      (JSC::FunctionCodeBlock::jettison):
      (JSC::ProgramCodeBlock::jitCompileImpl):
      (JSC::EvalCodeBlock::jitCompileImpl):
      (JSC::FunctionCodeBlock::jitCompileImpl):
      * bytecode/CodeBlock.h:
      (JSC):
      (CodeBlock):
      (JSC::CodeBlock::baselineVersion):
      (JSC::CodeBlock::linkIncomingCall):
      (JSC::CodeBlock::bytecodeOffset):
      (JSC::CodeBlock::jitCompile):
      (JSC::CodeBlock::hasOptimizedReplacement):
      (JSC::CodeBlock::addPropertyAccessInstruction):
      (JSC::CodeBlock::addGlobalResolveInstruction):
      (JSC::CodeBlock::addLLIntCallLinkInfo):
      (JSC::CodeBlock::addGlobalResolveInfo):
      (JSC::CodeBlock::numberOfMethodCallLinkInfos):
      (JSC::CodeBlock::valueProfilePredictionForBytecodeOffset):
      (JSC::CodeBlock::likelyToTakeSlowCase):
      (JSC::CodeBlock::couldTakeSlowCase):
      (JSC::CodeBlock::likelyToTakeSpecialFastCase):
      (JSC::CodeBlock::likelyToTakeDeepestSlowCase):
      (JSC::CodeBlock::likelyToTakeAnySlowCase):
      (JSC::CodeBlock::addFrequentExitSite):
      (JSC::CodeBlock::dontJITAnytimeSoon):
      (JSC::CodeBlock::jitAfterWarmUp):
      (JSC::CodeBlock::jitSoon):
      (JSC::CodeBlock::llintExecuteCounter):
      (ProgramCodeBlock):
      (EvalCodeBlock):
      (FunctionCodeBlock):
      * bytecode/GetByIdStatus.cpp:
      (JSC::GetByIdStatus::computeFromLLInt):
      (JSC):
      (JSC::GetByIdStatus::computeFor):
      * bytecode/GetByIdStatus.h:
      (JSC::GetByIdStatus::GetByIdStatus):
      (JSC::GetByIdStatus::wasSeenInJIT):
      (GetByIdStatus):
      * bytecode/Instruction.h:
      (JSC):
      (JSC::Instruction::Instruction):
      (Instruction):
      * bytecode/LLIntCallLinkInfo.h: Added.
      (JSC):
      (JSC::LLIntCallLinkInfo::LLIntCallLinkInfo):
      (LLIntCallLinkInfo):
      (JSC::LLIntCallLinkInfo::~LLIntCallLinkInfo):
      (JSC::LLIntCallLinkInfo::isLinked):
      (JSC::LLIntCallLinkInfo::unlink):
      * bytecode/MethodCallLinkStatus.cpp:
      (JSC::MethodCallLinkStatus::computeFor):
      * bytecode/Opcode.cpp:
      (JSC):
      * bytecode/Opcode.h:
      (JSC):
      (JSC::padOpcodeName):
      * bytecode/PutByIdStatus.cpp:
      (JSC::PutByIdStatus::computeFromLLInt):
      (JSC):
      (JSC::PutByIdStatus::computeFor):
      * bytecode/PutByIdStatus.h:
      (PutByIdStatus):
      * 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):
      * dfg/DFGByteCodeParser.cpp:
      (JSC::DFG::ByteCodeParser::getPredictionWithoutOSRExit):
      (JSC::DFG::ByteCodeParser::handleInlining):
      (JSC::DFG::ByteCodeParser::parseBlock):
      * dfg/DFGCapabilities.h:
      (JSC::DFG::canCompileOpcode):
      * dfg/DFGOSRExitCompiler.cpp:
      * dfg/DFGOperations.cpp:
      * heap/Heap.h:
      (JSC):
      (JSC::Heap::firstAllocatorWithoutDestructors):
      (Heap):
      * heap/MarkStack.cpp:
      (JSC::visitChildren):
      * heap/MarkedAllocator.h:
      (JSC):
      (MarkedAllocator):
      * heap/MarkedSpace.h:
      (JSC):
      (MarkedSpace):
      (JSC::MarkedSpace::firstAllocator):
      * interpreter/CallFrame.cpp:
      (JSC):
      (JSC::CallFrame::bytecodeOffsetForNonDFGCode):
      (JSC::CallFrame::setBytecodeOffsetForNonDFGCode):
      (JSC::CallFrame::currentVPC):
      (JSC::CallFrame::setCurrentVPC):
      (JSC::CallFrame::trueCallerFrame):
      * interpreter/CallFrame.h:
      (JSC::ExecState::hasReturnPC):
      (JSC::ExecState::clearReturnPC):
      (ExecState):
      (JSC::ExecState::bytecodeOffsetForNonDFGCode):
      (JSC::ExecState::currentVPC):
      (JSC::ExecState::setCurrentVPC):
      * interpreter/Interpreter.cpp:
      (JSC::Interpreter::Interpreter):
      (JSC::Interpreter::~Interpreter):
      (JSC):
      (JSC::Interpreter::initialize):
      (JSC::Interpreter::isOpcode):
      (JSC::Interpreter::unwindCallFrame):
      (JSC::getCallerInfo):
      (JSC::Interpreter::privateExecute):
      (JSC::Interpreter::retrieveLastCaller):
      * interpreter/Interpreter.h:
      (JSC):
      (Interpreter):
      (JSC::Interpreter::getOpcode):
      (JSC::Interpreter::getOpcodeID):
      (JSC::Interpreter::classicEnabled):
      * interpreter/RegisterFile.h:
      (JSC):
      (RegisterFile):
      * jit/ExecutableAllocator.h:
      (JSC):
      * jit/HostCallReturnValue.cpp: Added.
      (JSC):
      (JSC::getHostCallReturnValueWithExecState):
      * jit/HostCallReturnValue.h: Added.
      (JSC):
      (JSC::initializeHostCallReturnValue):
      * jit/JIT.cpp:
      (JSC::JIT::privateCompileMainPass):
      (JSC::JIT::privateCompileSlowCases):
      (JSC::JIT::privateCompile):
      * jit/JITCode.h:
      (JSC::JITCode::isOptimizingJIT):
      (JITCode):
      (JSC::JITCode::isBaselineCode):
      (JSC::JITCode::JITCode):
      * jit/JITDriver.h:
      (JSC::jitCompileIfAppropriate):
      (JSC::jitCompileFunctionIfAppropriate):
      * jit/JITExceptions.cpp:
      (JSC::jitThrow):
      * jit/JITInlineMethods.h:
      (JSC::JIT::updateTopCallFrame):
      * jit/JITStubs.cpp:
      (JSC::DEFINE_STUB_FUNCTION):
      (JSC):
      * jit/JITStubs.h:
      (JSC):
      * jit/JSInterfaceJIT.h:
      * llint: Added.
      * llint/LLIntCommon.h: Added.
      * llint/LLIntData.cpp: Added.
      (LLInt):
      (JSC::LLInt::Data::Data):
      (JSC::LLInt::Data::performAssertions):
      (JSC::LLInt::Data::~Data):
      * llint/LLIntData.h: Added.
      (JSC):
      (LLInt):
      (Data):
      (JSC::LLInt::Data::exceptionInstructions):
      (JSC::LLInt::Data::opcodeMap):
      (JSC::LLInt::Data::performAssertions):
      * llint/LLIntEntrypoints.cpp: Added.
      (LLInt):
      (JSC::LLInt::getFunctionEntrypoint):
      (JSC::LLInt::getEvalEntrypoint):
      (JSC::LLInt::getProgramEntrypoint):
      * llint/LLIntEntrypoints.h: Added.
      (JSC):
      (LLInt):
      (JSC::LLInt::getEntrypoint):
      * llint/LLIntExceptions.cpp: Added.
      (LLInt):
      (JSC::LLInt::interpreterThrowInCaller):
      (JSC::LLInt::returnToThrowForThrownException):
      (JSC::LLInt::returnToThrow):
      (JSC::LLInt::callToThrow):
      * llint/LLIntExceptions.h: Added.
      (JSC):
      (LLInt):
      * llint/LLIntOfflineAsmConfig.h: Added.
      * llint/LLIntOffsetsExtractor.cpp: Added.
      (JSC):
      (LLIntOffsetsExtractor):
      (JSC::LLIntOffsetsExtractor::dummy):
      (main):
      * llint/LLIntSlowPaths.cpp: Added.
      (LLInt):
      (JSC::LLInt::llint_trace_operand):
      (JSC::LLInt::llint_trace_value):
      (JSC::LLInt::LLINT_SLOW_PATH_DECL):
      (JSC::LLInt::traceFunctionPrologue):
      (JSC::LLInt::shouldJIT):
      (JSC::LLInt::entryOSR):
      (JSC::LLInt::resolveGlobal):
      (JSC::LLInt::getByVal):
      (JSC::LLInt::handleHostCall):
      (JSC::LLInt::setUpCall):
      (JSC::LLInt::genericCall):
      * llint/LLIntSlowPaths.h: Added.
      (JSC):
      (LLInt):
      * llint/LLIntThunks.cpp: Added.
      (LLInt):
      (JSC::LLInt::generateThunkWithJumpTo):
      (JSC::LLInt::functionForCallEntryThunkGenerator):
      (JSC::LLInt::functionForConstructEntryThunkGenerator):
      (JSC::LLInt::functionForCallArityCheckThunkGenerator):
      (JSC::LLInt::functionForConstructArityCheckThunkGenerator):
      (JSC::LLInt::evalEntryThunkGenerator):
      (JSC::LLInt::programEntryThunkGenerator):
      * llint/LLIntThunks.h: Added.
      (JSC):
      (LLInt):
      * llint/LowLevelInterpreter.asm: Added.
      * llint/LowLevelInterpreter.cpp: Added.
      * llint/LowLevelInterpreter.h: Added.
      * offlineasm: Added.
      * offlineasm/armv7.rb: Added.
      * offlineasm/asm.rb: Added.
      * offlineasm/ast.rb: Added.
      * offlineasm/backends.rb: Added.
      * offlineasm/generate_offset_extractor.rb: Added.
      * offlineasm/instructions.rb: Added.
      * offlineasm/offset_extractor_constants.rb: Added.
      * offlineasm/offsets.rb: Added.
      * offlineasm/opt.rb: Added.
      * offlineasm/parser.rb: Added.
      * offlineasm/registers.rb: Added.
      * offlineasm/self_hash.rb: Added.
      * offlineasm/settings.rb: Added.
      * offlineasm/transform.rb: Added.
      * offlineasm/x86.rb: Added.
      * runtime/CodeSpecializationKind.h: Added.
      (JSC):
      * runtime/CommonSlowPaths.h:
      (JSC::CommonSlowPaths::arityCheckFor):
      (CommonSlowPaths):
      * runtime/Executable.cpp:
      (JSC::jettisonCodeBlock):
      (JSC):
      (JSC::EvalExecutable::jitCompile):
      (JSC::samplingDescription):
      (JSC::EvalExecutable::compileInternal):
      (JSC::ProgramExecutable::jitCompile):
      (JSC::ProgramExecutable::compileInternal):
      (JSC::FunctionExecutable::baselineCodeBlockFor):
      (JSC::FunctionExecutable::jitCompileForCall):
      (JSC::FunctionExecutable::jitCompileForConstruct):
      (JSC::FunctionExecutable::compileForCallInternal):
      (JSC::FunctionExecutable::compileForConstructInternal):
      * runtime/Executable.h:
      (JSC):
      (EvalExecutable):
      (ProgramExecutable):
      (FunctionExecutable):
      (JSC::FunctionExecutable::jitCompileFor):
      * runtime/ExecutionHarness.h: Added.
      (JSC):
      (JSC::prepareForExecution):
      (JSC::prepareFunctionForExecution):
      * runtime/JSArray.h:
      (JSC):
      (JSArray):
      * runtime/JSCell.h:
      (JSC):
      (JSCell):
      * runtime/JSFunction.h:
      (JSC):
      (JSFunction):
      * runtime/JSGlobalData.cpp:
      (JSC::JSGlobalData::JSGlobalData):
      * runtime/JSGlobalData.h:
      (JSC):
      (JSGlobalData):
      * runtime/JSGlobalObject.h:
      (JSC):
      (JSGlobalObject):
      * runtime/JSObject.h:
      (JSC):
      (JSObject):
      (JSFinalObject):
      * runtime/JSPropertyNameIterator.h:
      (JSC):
      (JSPropertyNameIterator):
      * runtime/JSString.h:
      (JSC):
      (JSString):
      * runtime/JSTypeInfo.h:
      (JSC):
      (TypeInfo):
      * runtime/JSValue.cpp:
      (JSC::JSValue::description):
      * runtime/JSValue.h:
      (LLInt):
      (JSValue):
      * runtime/JSVariableObject.h:
      (JSC):
      (JSVariableObject):
      * runtime/Options.cpp:
      (Options):
      (JSC::Options::initializeOptions):
      * runtime/Options.h:
      (Options):
      * runtime/ScopeChain.h:
      (JSC):
      (ScopeChainNode):
      * runtime/Structure.cpp:
      (JSC::Structure::addPropertyTransition):
      * runtime/Structure.h:
      (JSC):
      (Structure):
      * runtime/StructureChain.h:
      (JSC):
      (StructureChain):
      * wtf/InlineASM.h:
      * wtf/Platform.h:
      * wtf/SentinelLinkedList.h:
      (SentinelLinkedList):
      (WTF::SentinelLinkedList::isEmpty):
      * wtf/text/StringImpl.h:
      (JSC):
      (StringImpl):
      
      Source/WebCore: 
      
      Reviewed by Gavin Barraclough.
              
      No new tests, because there is no change in behavior.
      
      * CMakeLists.txt:
      
      Source/WebKit: 
      
      Reviewed by Gavin Barraclough.
      
      Changed EFL's build system to include a new directory in JavaScriptCore.
              
      * CMakeLists.txt:
      
      Tools: 
      
      Reviewed by Gavin Barraclough.
      
      Changed EFL's build system to include a new directory in JavaScriptCore.
      
      * DumpRenderTree/efl/CMakeLists.txt:
      
      
      
      git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108309 268f45cc-cd09-0410-ab3c-d52691b4dbfc
      091129f4
  3. 22 Jan, 2012 3 commits
    • fpizlo@apple.com's avatar
      Build fix for non-DFG platforms that error out on warn-unused-parameter. · 246741b6
      fpizlo@apple.com authored
      * bytecode/CallLinkStatus.cpp:
      (JSC::CallLinkStatus::computeFor):
      * bytecode/GetByIdStatus.cpp:
      (JSC::GetByIdStatus::computeFor):
      * bytecode/MethodCallLinkStatus.cpp:
      (JSC::MethodCallLinkStatus::computeFor):
      * bytecode/PutByIdStatus.cpp:
      (JSC::PutByIdStatus::computeFor):
      
      
      
      git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105586 268f45cc-cd09-0410-ab3c-d52691b4dbfc
      246741b6
    • fpizlo@apple.com's avatar
      Build fix for non-DFG platforms. · cbe124d4
      fpizlo@apple.com authored
      * bytecode/CallLinkStatus.cpp:
      (JSC::CallLinkStatus::computeFor):
      * bytecode/GetByIdStatus.cpp:
      (JSC::GetByIdStatus::computeFor):
      * bytecode/MethodCallLinkStatus.cpp:
      (JSC::MethodCallLinkStatus::computeFor):
      * bytecode/PutByIdStatus.cpp:
      (JSC::PutByIdStatus::computeFor):
      
      
      
      git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105585 268f45cc-cd09-0410-ab3c-d52691b4dbfc
      cbe124d4
    • fpizlo@apple.com's avatar
      DFG should not have code that directly decodes the states of old JIT inline · 1f8917fd
      fpizlo@apple.com authored
      cache data structures
      https://bugs.webkit.org/show_bug.cgi?id=76768
      
      Reviewed by Sam Weinig.
              
      Introduced new classes (like GetByIdStatus) that encapsulate the set of things
      that the DFG would like to know about property accesses and calls. Whereas it
      previously got this information by directly decoding the data structures used
      by the old JIT for inline caching, it now uses these classes, which do the work
      for it. This should make it somewhat more straight forward to introduce new
      ways of profiling the same information.
              
      Also hoisted StructureSet into bytecode/ from dfg/, because it's now used by
      code in bytecode/.
              
      Making this work right involved carefully ensuring that the heuristics for
      choosing how to handle property accesses was at least as good as what we had
      before, since I completely restructured that code. Currently the performance
      looks neutral. Since I rewrote the code I did change some things that I never
      liked before, like previously if a put_bu_id had executed exactly once then
      we'd compile it as if it had taken slow-path. Executing once is special because
      then the inline cache is not baked in, so there is no information about how the
      DFG should optimize the code. Now this is rationalized: if the put_by_id does
      not offer enough information to be optimized (i.e. had executed 0 or 1 times)
      then we turn it into a forced OSR exit (i.e. a patch point). However, get_by_id
      still has the old behavior; I left it that way because I didn't want to make
      too many changes at once.
      
      * CMakeLists.txt:
      * GNUmakefile.list.am:
      * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
      * JavaScriptCore.xcodeproj/project.pbxproj:
      * Target.pri:
      * bytecode/CallLinkStatus.cpp: Added.
      (JSC::CallLinkStatus::computeFor):
      * bytecode/CallLinkStatus.h: Added.
      (JSC::CallLinkStatus::CallLinkStatus):
      (JSC::CallLinkStatus::isSet):
      (JSC::CallLinkStatus::operator!):
      (JSC::CallLinkStatus::couldTakeSlowPath):
      (JSC::CallLinkStatus::callTarget):
      * bytecode/GetByIdStatus.cpp: Added.
      (JSC::GetByIdStatus::computeFor):
      * bytecode/GetByIdStatus.h: Added.
      (JSC::GetByIdStatus::GetByIdStatus):
      (JSC::GetByIdStatus::state):
      (JSC::GetByIdStatus::isSet):
      (JSC::GetByIdStatus::operator!):
      (JSC::GetByIdStatus::isSimpleDirect):
      (JSC::GetByIdStatus::takesSlowPath):
      (JSC::GetByIdStatus::makesCalls):
      (JSC::GetByIdStatus::structureSet):
      (JSC::GetByIdStatus::offset):
      * bytecode/MethodCallLinkStatus.cpp: Added.
      (JSC::MethodCallLinkStatus::computeFor):
      * bytecode/MethodCallLinkStatus.h: Added.
      (JSC::MethodCallLinkStatus::MethodCallLinkStatus):
      (JSC::MethodCallLinkStatus::isSet):
      (JSC::MethodCallLinkStatus::operator!):
      (JSC::MethodCallLinkStatus::needsPrototypeCheck):
      (JSC::MethodCallLinkStatus::structure):
      (JSC::MethodCallLinkStatus::prototypeStructure):
      (JSC::MethodCallLinkStatus::function):
      (JSC::MethodCallLinkStatus::prototype):
      * bytecode/PutByIdStatus.cpp: Added.
      (JSC::PutByIdStatus::computeFor):
      * bytecode/PutByIdStatus.h: Added.
      (JSC::PutByIdStatus::PutByIdStatus):
      (JSC::PutByIdStatus::state):
      (JSC::PutByIdStatus::isSet):
      (JSC::PutByIdStatus::operator!):
      (JSC::PutByIdStatus::isSimpleReplace):
      (JSC::PutByIdStatus::isSimpleTransition):
      (JSC::PutByIdStatus::takesSlowPath):
      (JSC::PutByIdStatus::oldStructure):
      (JSC::PutByIdStatus::newStructure):
      (JSC::PutByIdStatus::structureChain):
      (JSC::PutByIdStatus::offset):
      * bytecode/StructureSet.h: Added.
      (JSC::StructureSet::StructureSet):
      (JSC::StructureSet::clear):
      (JSC::StructureSet::add):
      (JSC::StructureSet::addAll):
      (JSC::StructureSet::remove):
      (JSC::StructureSet::contains):
      (JSC::StructureSet::isSubsetOf):
      (JSC::StructureSet::isSupersetOf):
      (JSC::StructureSet::size):
      (JSC::StructureSet::at):
      (JSC::StructureSet::operator[]):
      (JSC::StructureSet::last):
      (JSC::StructureSet::predictionFromStructures):
      (JSC::StructureSet::operator==):
      (JSC::StructureSet::dump):
      * dfg/DFGAbstractValue.h:
      * dfg/DFGByteCodeParser.cpp:
      (JSC::DFG::ByteCodeParser::handleCall):
      (JSC::DFG::ByteCodeParser::parseBlock):
      * dfg/DFGStructureSet.h: Removed.
      
      
      
      git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105581 268f45cc-cd09-0410-ab3c-d52691b4dbfc
      1f8917fd