/* * Copyright (C) 2008 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef JIT_h #define JIT_h #if ENABLE(JIT) // Verbose logging of code generation #define ENABLE_JIT_VERBOSE 0 // Verbose logging for OSR-related code. #define ENABLE_JIT_VERBOSE_OSR 0 // We've run into some problems where changing the size of the class JIT leads to // performance fluctuations. Try forcing alignment in an attempt to stabalize this. #if COMPILER(GCC) #define JIT_CLASS_ALIGNMENT __attribute__ ((aligned (32))) #else #define JIT_CLASS_ALIGNMENT #endif #define ASSERT_JIT_OFFSET_UNUSED(variable, actual, expected) ASSERT_WITH_MESSAGE_UNUSED(variable, actual == expected, "JIT Offset \"%s\" should be %d, not %d.\n", #expected, static_cast(expected), static_cast(actual)); #define ASSERT_JIT_OFFSET(actual, expected) ASSERT_WITH_MESSAGE(actual == expected, "JIT Offset \"%s\" should be %d, not %d.\n", #expected, static_cast(expected), static_cast(actual)); #include "CodeBlock.h" #include "CompactJITCodeMap.h" #include "Interpreter.h" #include "JSInterfaceJIT.h" #include "Opcode.h" #include "Profiler.h" #include namespace JSC { class CodeBlock; class FunctionExecutable; class JIT; class JSPropertyNameIterator; class Interpreter; class Register; class RegisterFile; class ScopeChainNode; class StructureChain; struct CallLinkInfo; struct Instruction; struct OperandTypes; struct PolymorphicAccessStructureList; struct SimpleJumpTable; struct StringJumpTable; struct StructureStubInfo; struct CallRecord { MacroAssembler::Call from; unsigned bytecodeOffset; void* to; CallRecord() { } CallRecord(MacroAssembler::Call from, unsigned bytecodeOffset, void* to = 0) : from(from) , bytecodeOffset(bytecodeOffset) , to(to) { } }; struct JumpTable { MacroAssembler::Jump from; unsigned toBytecodeOffset; JumpTable(MacroAssembler::Jump f, unsigned t) : from(f) , toBytecodeOffset(t) { } }; struct SlowCaseEntry { MacroAssembler::Jump from; unsigned to; unsigned hint; SlowCaseEntry(MacroAssembler::Jump f, unsigned t, unsigned h = 0) : from(f) , to(t) , hint(h) { } }; struct SwitchRecord { enum Type { Immediate, Character, String }; Type type; union { SimpleJumpTable* simpleJumpTable; StringJumpTable* stringJumpTable; } jumpTable; unsigned bytecodeOffset; unsigned defaultOffset; SwitchRecord(SimpleJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset, Type type) : type(type) , bytecodeOffset(bytecodeOffset) , defaultOffset(defaultOffset) { this->jumpTable.simpleJumpTable = jumpTable; } SwitchRecord(StringJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset) : type(String) , bytecodeOffset(bytecodeOffset) , defaultOffset(defaultOffset) { this->jumpTable.stringJumpTable = jumpTable; } }; struct PropertyStubCompilationInfo { unsigned bytecodeIndex; MacroAssembler::Call callReturnLocation; MacroAssembler::Label hotPathBegin; #if !ASSERT_DISABLED PropertyStubCompilationInfo() : bytecodeIndex(std::numeric_limits::max()) { } #endif }; struct StructureStubCompilationInfo { MacroAssembler::DataLabelPtr hotPathBegin; MacroAssembler::Call hotPathOther; MacroAssembler::Call callReturnLocation; CallLinkInfo::CallType callType; unsigned bytecodeIndex; }; struct MethodCallCompilationInfo { MethodCallCompilationInfo(unsigned bytecodeIndex, unsigned propertyAccessIndex) : bytecodeIndex(bytecodeIndex) , propertyAccessIndex(propertyAccessIndex) { } unsigned bytecodeIndex; MacroAssembler::DataLabelPtr structureToCompare; unsigned propertyAccessIndex; }; // Near calls can only be patched to other JIT code, regular calls can be patched to JIT code or relinked to stub functions. void ctiPatchNearCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction); void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction); void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, FunctionPtr newCalleeFunction); class JIT : private JSInterfaceJIT { friend class JITStubCall; using MacroAssembler::Jump; using MacroAssembler::JumpList; using MacroAssembler::Label; static const int patchGetByIdDefaultStructure = -1; static const int patchGetByIdDefaultOffset = 0; // Magic number - initial offset cannot be representable as a signed 8bit value, or the X86Assembler // will compress the displacement, and we may not be able to fit a patched offset. static const int patchPutByIdDefaultOffset = 256; public: static JITCode compile(JSGlobalData* globalData, CodeBlock* codeBlock, CodePtr* functionEntryArityCheck = 0) { return JIT(globalData, codeBlock).privateCompile(functionEntryArityCheck); } static void compileGetByIdProto(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdProto(stubInfo, structure, prototypeStructure, ident, slot, cachedOffset, returnAddress, callFrame); } static void compileGetByIdSelfList(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdSelfList(stubInfo, polymorphicStructures, currentIndex, structure, ident, slot, cachedOffset); } static void compileGetByIdProtoList(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdProtoList(stubInfo, prototypeStructureList, currentIndex, structure, prototypeStructure, ident, slot, cachedOffset, callFrame); } static void compileGetByIdChainList(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdChainList(stubInfo, prototypeStructureList, currentIndex, structure, chain, count, ident, slot, cachedOffset, callFrame); } static void compileGetByIdChain(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, size_t cachedOffset, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdChain(stubInfo, structure, chain, count, ident, slot, cachedOffset, returnAddress, callFrame); } static void compilePutByIdTransition(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, size_t cachedOffset, StructureChain* chain, ReturnAddressPtr returnAddress, bool direct) { JIT jit(globalData, codeBlock); jit.privateCompilePutByIdTransition(stubInfo, oldStructure, newStructure, cachedOffset, chain, returnAddress, direct); } static PassRefPtr compileCTIMachineTrampolines(JSGlobalData* globalData, TrampolineStructure *trampolines) { if (!globalData->canUseJIT()) return 0; JIT jit(globalData, 0); return jit.privateCompileCTIMachineTrampolines(globalData, trampolines); } static CodeRef compileCTINativeCall(JSGlobalData* globalData, NativeFunction func) { if (!globalData->canUseJIT()) return CodeRef(); JIT jit(globalData, 0); return jit.privateCompileCTINativeCall(globalData, func); } static void resetPatchGetById(RepatchBuffer&, StructureStubInfo*); static void resetPatchPutById(RepatchBuffer&, StructureStubInfo*); static void patchGetByIdSelf(CodeBlock* codeblock, StructureStubInfo*, Structure*, size_t cachedOffset, ReturnAddressPtr returnAddress); static void patchPutByIdReplace(CodeBlock* codeblock, StructureStubInfo*, Structure*, size_t cachedOffset, ReturnAddressPtr returnAddress, bool direct); static void patchMethodCallProto(JSGlobalData&, CodeBlock* codeblock, MethodCallLinkInfo&, JSObject*, Structure*, JSObject*, ReturnAddressPtr); static void compilePatchGetArrayLength(JSGlobalData* globalData, CodeBlock* codeBlock, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); return jit.privateCompilePatchGetArrayLength(returnAddress); } static void linkFor(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, CodePtr, CallLinkInfo*, JSGlobalData*, CodeSpecializationKind); private: struct JSRInfo { DataLabelPtr storeLocation; Label target; JSRInfo(DataLabelPtr storeLocation, Label targetLocation) : storeLocation(storeLocation) , target(targetLocation) { } }; JIT(JSGlobalData*, CodeBlock* = 0); void privateCompileMainPass(); void privateCompileLinkPass(); void privateCompileSlowCases(); JITCode privateCompile(CodePtr* functionEntryArityCheck); void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, size_t cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame); void privateCompileGetByIdSelfList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, const Identifier&, const PropertySlot&, size_t cachedOffset); void privateCompileGetByIdProtoList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, size_t cachedOffset, CallFrame* callFrame); void privateCompileGetByIdChainList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, StructureChain* chain, size_t count, const Identifier&, const PropertySlot&, size_t cachedOffset, CallFrame* callFrame); void privateCompileGetByIdChain(StructureStubInfo*, Structure*, StructureChain*, size_t count, const Identifier&, const PropertySlot&, size_t cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame); void privateCompilePutByIdTransition(StructureStubInfo*, Structure*, Structure*, size_t cachedOffset, StructureChain*, ReturnAddressPtr returnAddress, bool direct); PassRefPtr privateCompileCTIMachineTrampolines(JSGlobalData*, TrampolineStructure*); Label privateCompileCTINativeCall(JSGlobalData*, bool isConstruct = false); CodeRef privateCompileCTINativeCall(JSGlobalData*, NativeFunction); void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress); static bool isDirectPutById(StructureStubInfo*); void addSlowCase(Jump); void addSlowCase(JumpList); void addSlowCase(); void addJump(Jump, int); void emitJumpSlowToHot(Jump, int); void compileOpCall(OpcodeID, Instruction*, unsigned callLinkInfoIndex); void compileOpCallSlowCase(OpcodeID, Instruction*, Vector::iterator&, unsigned callLinkInfoIndex); void compileLoadVarargs(Instruction*); void compileCallEval(); void compileCallEvalSlowCase(Vector::iterator&); enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq }; void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type); bool isOperandConstantImmediateDouble(unsigned src); void emitLoadDouble(int index, FPRegisterID value); void emitLoadInt32ToDouble(int index, FPRegisterID value); Jump emitJumpIfNotObject(RegisterID structureReg); Jump emitJumpIfNotType(RegisterID baseReg, RegisterID scratchReg, JSType); void testPrototype(JSValue, JumpList& failureCases); enum WriteBarrierMode { UnconditionalWriteBarrier, ShouldFilterImmediates }; // value register in write barrier is used before any scratch registers // so may safely be the same as either of the scratch registers. void emitWriteBarrier(RegisterID owner, RegisterID valueTag, RegisterID scratch, RegisterID scratch2, WriteBarrierMode, WriteBarrierUseKind); void emitWriteBarrier(JSCell* owner, RegisterID value, RegisterID scratch, WriteBarrierMode, WriteBarrierUseKind); template void emitAllocateBasicJSObject(StructureType, RegisterID result, RegisterID storagePtr); template void emitAllocateJSFinalObject(T structure, RegisterID result, RegisterID storagePtr); void emitAllocateJSFunction(FunctionExecutable*, RegisterID scopeChain, RegisterID result, RegisterID storagePtr); enum ValueProfilingSiteKind { FirstProfilingSite, SubsequentProfilingSite }; #if ENABLE(VALUE_PROFILER) // This assumes that the value to profile is in regT0 and that regT3 is available for // scratch. void emitValueProfilingSite(ValueProfile*); void emitValueProfilingSite(ValueProfilingSiteKind); #else void emitValueProfilingSite(ValueProfilingSiteKind) { } #endif #if USE(JSVALUE32_64) bool getOperandConstantImmediateInt(unsigned op1, unsigned op2, unsigned& op, int32_t& constant); void emitLoadTag(int index, RegisterID tag); void emitLoadPayload(int index, RegisterID payload); void emitLoad(const JSValue& v, RegisterID tag, RegisterID payload); void emitLoad(int index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitLoad2(int index1, RegisterID tag1, RegisterID payload1, int index2, RegisterID tag2, RegisterID payload2); void emitStore(int index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitStore(int index, const JSValue constant, RegisterID base = callFrameRegister); void emitStoreInt32(int index, RegisterID payload, bool indexIsInt32 = false); void emitStoreInt32(int index, TrustedImm32 payload, bool indexIsInt32 = false); void emitStoreAndMapInt32(int index, RegisterID tag, RegisterID payload, bool indexIsInt32, size_t opcodeLength); void emitStoreCell(int index, RegisterID payload, bool indexIsCell = false); void emitStoreBool(int index, RegisterID payload, bool indexIsBool = false); void emitStoreDouble(int index, FPRegisterID value); bool isLabeled(unsigned bytecodeOffset); void map(unsigned bytecodeOffset, int virtualRegisterIndex, RegisterID tag, RegisterID payload); void unmap(RegisterID); void unmap(); bool isMapped(int virtualRegisterIndex); bool getMappedPayload(int virtualRegisterIndex, RegisterID& payload); bool getMappedTag(int virtualRegisterIndex, RegisterID& tag); void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex); void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex, RegisterID tag); void compileGetByIdHotPath(); void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector::iterator& iter, bool isMethodCheck = false); void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, size_t cachedOffset); void compileGetDirectOffset(JSObject* base, RegisterID resultTag, RegisterID resultPayload, size_t cachedOffset); void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, RegisterID offset); void compilePutDirectOffset(RegisterID base, RegisterID valueTag, RegisterID valuePayload, size_t cachedOffset); // Arithmetic opcode helpers void emitAdd32Constant(unsigned dst, unsigned op, int32_t constant, ResultType opType); void emitSub32Constant(unsigned dst, unsigned op, int32_t constant, ResultType opType); void emitBinaryDoubleOp(OpcodeID, unsigned dst, unsigned op1, unsigned op2, OperandTypes, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters = true, bool op2IsInRegisters = true); #if CPU(X86) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 7; static const int patchOffsetPutByIdPropertyMapOffset1 = 22; static const int patchOffsetPutByIdPropertyMapOffset2 = 28; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 7; static const int patchOffsetGetByIdBranchToSlowCase = 13; static const int patchOffsetGetByIdPropertyMapOffset1 = 19; static const int patchOffsetGetByIdPropertyMapOffset2 = 22; static const int patchOffsetGetByIdPutResult = 22; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 37; #else static const int patchOffsetGetByIdSlowCaseCall = 33; #endif static const int patchOffsetOpCallCompareToJump = 6; static const int patchOffsetMethodCheckProtoObj = 11; static const int patchOffsetMethodCheckProtoStruct = 18; static const int patchOffsetMethodCheckPutFunction = 29; #elif CPU(ARM_TRADITIONAL) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 4; static const int patchOffsetPutByIdPropertyMapOffset1 = 20; static const int patchOffsetPutByIdPropertyMapOffset2 = 28; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 4; static const int patchOffsetGetByIdBranchToSlowCase = 16; static const int patchOffsetGetByIdPropertyMapOffset1 = 20; static const int patchOffsetGetByIdPropertyMapOffset2 = 28; static const int patchOffsetGetByIdPutResult = 36; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 40; #endif static const int patchOffsetOpCallCompareToJump = 12; static const int patchOffsetMethodCheckProtoObj = 12; static const int patchOffsetMethodCheckProtoStruct = 20; static const int patchOffsetMethodCheckPutFunction = 32; // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceMethodCheck static const int sequenceMethodCheckInstructionSpace = 40; static const int sequenceMethodCheckConstantSpace = 6; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 36; static const int sequenceGetByIdHotPathConstantSpace = 4; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 56; static const int sequenceGetByIdSlowCaseConstantSpace = 3; // sequencePutById static const int sequencePutByIdInstructionSpace = 36; static const int sequencePutByIdConstantSpace = 4; #elif CPU(ARM_THUMB2) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 10; static const int patchOffsetPutByIdPropertyMapOffset1 = 36; static const int patchOffsetPutByIdPropertyMapOffset2 = 48; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 10; static const int patchOffsetGetByIdBranchToSlowCase = 26; static const int patchOffsetGetByIdPropertyMapOffset1 = 28; static const int patchOffsetGetByIdPropertyMapOffset2 = 30; static const int patchOffsetGetByIdPutResult = 32; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 40; #endif static const int patchOffsetOpCallCompareToJump = 16; static const int patchOffsetMethodCheckProtoObj = 24; static const int patchOffsetMethodCheckProtoStruct = 34; static const int patchOffsetMethodCheckPutFunction = 58; // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceMethodCheck static const int sequenceMethodCheckInstructionSpace = 40; static const int sequenceMethodCheckConstantSpace = 6; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 36; static const int sequenceGetByIdHotPathConstantSpace = 4; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 40; static const int sequenceGetByIdSlowCaseConstantSpace = 2; // sequencePutById static const int sequencePutByIdInstructionSpace = 36; static const int sequencePutByIdConstantSpace = 4; #elif CPU(MIPS) #if WTF_MIPS_ISA(1) static const int patchOffsetPutByIdStructure = 16; static const int patchOffsetPutByIdPropertyMapOffset1 = 56; static const int patchOffsetPutByIdPropertyMapOffset2 = 72; static const int patchOffsetGetByIdStructure = 16; static const int patchOffsetGetByIdBranchToSlowCase = 48; static const int patchOffsetGetByIdPropertyMapOffset1 = 56; static const int patchOffsetGetByIdPropertyMapOffset2 = 76; static const int patchOffsetGetByIdPutResult = 96; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 56; #endif static const int patchOffsetOpCallCompareToJump = 32; static const int patchOffsetMethodCheckProtoObj = 32; static const int patchOffsetMethodCheckProtoStruct = 56; static const int patchOffsetMethodCheckPutFunction = 88; #else // WTF_MIPS_ISA(1) static const int patchOffsetPutByIdStructure = 12; static const int patchOffsetPutByIdPropertyMapOffset1 = 48; static const int patchOffsetPutByIdPropertyMapOffset2 = 64; static const int patchOffsetGetByIdStructure = 12; static const int patchOffsetGetByIdBranchToSlowCase = 44; static const int patchOffsetGetByIdPropertyMapOffset1 = 48; static const int patchOffsetGetByIdPropertyMapOffset2 = 64; static const int patchOffsetGetByIdPutResult = 80; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 56; #endif static const int patchOffsetOpCallCompareToJump = 32; static const int patchOffsetMethodCheckProtoObj = 32; static const int patchOffsetMethodCheckProtoStruct = 52; static const int patchOffsetMethodCheckPutFunction = 84; #endif #elif CPU(SH4) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetGetByIdStructure = 6; static const int patchOffsetPutByIdPropertyMapOffset = 24; static const int patchOffsetPutByIdStructure = 6; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdBranchToSlowCase = 10; static const int patchOffsetGetByIdPropertyMapOffset = 24; static const int patchOffsetGetByIdPutResult = 24; // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceMethodCheck static const int sequenceMethodCheckInstructionSpace = 40; static const int sequenceMethodCheckConstantSpace = 6; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 36; static const int sequenceGetByIdHotPathConstantSpace = 5; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 30; static const int sequenceGetByIdSlowCaseConstantSpace = 3; // sequencePutById static const int sequencePutByIdInstructionSpace = 36; static const int sequencePutByIdConstantSpace = 5; static const int patchOffsetGetByIdPropertyMapOffset1 = 20; static const int patchOffsetGetByIdPropertyMapOffset2 = 22; static const int patchOffsetPutByIdPropertyMapOffset1 = 20; static const int patchOffsetPutByIdPropertyMapOffset2 = 26; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 0; // FIMXE #else static const int patchOffsetGetByIdSlowCaseCall = 26; #endif static const int patchOffsetOpCallCompareToJump = 4; static const int patchOffsetMethodCheckProtoObj = 12; static const int patchOffsetMethodCheckProtoStruct = 20; static const int patchOffsetMethodCheckPutFunction = 32; #else #error "JSVALUE32_64 not supported on this platform." #endif #else // USE(JSVALUE32_64) void emitGetVirtualRegister(int src, RegisterID dst); void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2); void emitPutVirtualRegister(unsigned dst, RegisterID from = regT0); void emitStoreCell(unsigned dst, RegisterID payload, bool /* only used in JSValue32_64 */ = false) { emitPutVirtualRegister(dst, payload); } int32_t getConstantOperandImmediateInt(unsigned src); void killLastResultRegister(); Jump emitJumpIfJSCell(RegisterID); Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfJSCell(RegisterID); Jump emitJumpIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg); #if USE(JSVALUE32_64) JIT::Jump emitJumpIfImmediateNumber(RegisterID reg) { return emitJumpIfImmediateInteger(reg); } JIT::Jump emitJumpIfNotImmediateNumber(RegisterID reg) { return emitJumpIfNotImmediateInteger(reg); } #endif Jump emitJumpIfImmediateInteger(RegisterID); Jump emitJumpIfNotImmediateInteger(RegisterID); Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfNotImmediateInteger(RegisterID); void emitJumpSlowCaseIfNotImmediateNumber(RegisterID); void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); #if USE(JSVALUE32_64) void emitFastArithDeTagImmediate(RegisterID); Jump emitFastArithDeTagImmediateJumpIfZero(RegisterID); #endif void emitFastArithReTagImmediate(RegisterID src, RegisterID dest); void emitFastArithIntToImmNoCheck(RegisterID src, RegisterID dest); void emitTagAsBoolImmediate(RegisterID reg); void compileBinaryArithOp(OpcodeID, unsigned dst, unsigned src1, unsigned src2, OperandTypes opi); #if USE(JSVALUE64) void compileBinaryArithOpSlowCase(OpcodeID, Vector::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase); #else void compileBinaryArithOpSlowCase(OpcodeID, Vector::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes); #endif void compileGetByIdHotPath(int baseVReg, Identifier*); void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector::iterator& iter, bool isMethodCheck = false); void compileGetDirectOffset(RegisterID base, RegisterID result, size_t cachedOffset); void compileGetDirectOffset(JSObject* base, RegisterID result, size_t cachedOffset); void compileGetDirectOffset(RegisterID base, RegisterID result, RegisterID offset, RegisterID scratch); void compilePutDirectOffset(RegisterID base, RegisterID value, size_t cachedOffset); #if CPU(X86_64) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 10; static const int patchOffsetPutByIdPropertyMapOffset = 31; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 10; static const int patchOffsetGetByIdBranchToSlowCase = 20; static const int patchOffsetGetByIdPropertyMapOffset = 28; static const int patchOffsetGetByIdPutResult = 28; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 64; #else static const int patchOffsetGetByIdSlowCaseCall = 54; #endif static const int patchOffsetOpCallCompareToJump = 9; static const int patchOffsetMethodCheckProtoObj = 20; static const int patchOffsetMethodCheckProtoStruct = 30; static const int patchOffsetMethodCheckPutFunction = 50; #elif CPU(X86) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 7; static const int patchOffsetPutByIdPropertyMapOffset = 22; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 7; static const int patchOffsetGetByIdBranchToSlowCase = 13; static const int patchOffsetGetByIdPropertyMapOffset = 22; static const int patchOffsetGetByIdPutResult = 22; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 33; #else static const int patchOffsetGetByIdSlowCaseCall = 23; #endif static const int patchOffsetOpCallCompareToJump = 6; static const int patchOffsetMethodCheckProtoObj = 11; static const int patchOffsetMethodCheckProtoStruct = 18; static const int patchOffsetMethodCheckPutFunction = 29; #elif CPU(ARM_THUMB2) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 10; static const int patchOffsetPutByIdPropertyMapOffset = 46; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 10; static const int patchOffsetGetByIdBranchToSlowCase = 26; static const int patchOffsetGetByIdPropertyMapOffset = 46; static const int patchOffsetGetByIdPutResult = 50; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 0; // FIMXE #else static const int patchOffsetGetByIdSlowCaseCall = 28; #endif static const int patchOffsetOpCallCompareToJump = 16; static const int patchOffsetMethodCheckProtoObj = 24; static const int patchOffsetMethodCheckProtoStruct = 34; static const int patchOffsetMethodCheckPutFunction = 58; #elif CPU(ARM_TRADITIONAL) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 4; static const int patchOffsetPutByIdPropertyMapOffset = 20; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 4; static const int patchOffsetGetByIdBranchToSlowCase = 16; static const int patchOffsetGetByIdPropertyMapOffset = 20; static const int patchOffsetGetByIdPutResult = 28; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 28; #endif static const int patchOffsetOpCallCompareToJump = 12; static const int patchOffsetMethodCheckProtoObj = 12; static const int patchOffsetMethodCheckProtoStruct = 20; static const int patchOffsetMethodCheckPutFunction = 32; // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceMethodCheck static const int sequenceMethodCheckInstructionSpace = 40; static const int sequenceMethodCheckConstantSpace = 6; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 28; static const int sequenceGetByIdHotPathConstantSpace = 3; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 32; static const int sequenceGetByIdSlowCaseConstantSpace = 2; // sequencePutById static const int sequencePutByIdInstructionSpace = 28; static const int sequencePutByIdConstantSpace = 3; #elif CPU(MIPS) #if WTF_MIPS_ISA(1) static const int patchOffsetPutByIdStructure = 16; static const int patchOffsetPutByIdPropertyMapOffset = 68; static const int patchOffsetGetByIdStructure = 16; static const int patchOffsetGetByIdBranchToSlowCase = 48; static const int patchOffsetGetByIdPropertyMapOffset = 68; static const int patchOffsetGetByIdPutResult = 88; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 40; #endif static const int patchOffsetOpCallCompareToJump = 32; static const int patchOffsetMethodCheckProtoObj = 32; static const int patchOffsetMethodCheckProtoStruct = 56; static const int patchOffsetMethodCheckPutFunction = 88; #else // WTF_MIPS_ISA(1) static const int patchOffsetPutByIdStructure = 12; static const int patchOffsetPutByIdPropertyMapOffset = 60; static const int patchOffsetGetByIdStructure = 12; static const int patchOffsetGetByIdBranchToSlowCase = 44; static const int patchOffsetGetByIdPropertyMapOffset = 60; static const int patchOffsetGetByIdPutResult = 76; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 40; #endif static const int patchOffsetOpCallCompareToJump = 32; static const int patchOffsetMethodCheckProtoObj = 32; static const int patchOffsetMethodCheckProtoStruct = 52; static const int patchOffsetMethodCheckPutFunction = 84; #endif #endif #endif // USE(JSVALUE32_64) #if (defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL) #define BEGIN_UNINTERRUPTED_SEQUENCE(name) do { beginUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace); } while (false) #define END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, dst) do { endUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace, dst); } while (false) #define END_UNINTERRUPTED_SEQUENCE(name) END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, 0) void beginUninterruptedSequence(int, int); void endUninterruptedSequence(int, int, int); #else #define BEGIN_UNINTERRUPTED_SEQUENCE(name) do { beginUninterruptedSequence(); } while (false) #define END_UNINTERRUPTED_SEQUENCE(name) do { endUninterruptedSequence(); } while (false) #define END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, dst) do { endUninterruptedSequence(); } while (false) #endif void emit_compareAndJump(OpcodeID, unsigned op1, unsigned op2, unsigned target, RelationalCondition); void emit_compareAndJumpSlow(unsigned op1, unsigned op2, unsigned target, DoubleCondition, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION), bool invert, Vector::iterator&); void emit_op_add(Instruction*); void emit_op_bitand(Instruction*); void emit_op_bitnot(Instruction*); void emit_op_bitor(Instruction*); void emit_op_bitxor(Instruction*); void emit_op_call(Instruction*); void emit_op_call_eval(Instruction*); void emit_op_call_varargs(Instruction*); void emit_op_call_put_result(Instruction*); void emit_op_catch(Instruction*); void emit_op_construct(Instruction*); void emit_op_get_callee(Instruction*); void emit_op_create_this(Instruction*); void emit_op_convert_this(Instruction*); void emit_op_create_arguments(Instruction*); void emit_op_debug(Instruction*); void emit_op_del_by_id(Instruction*); void emit_op_div(Instruction*); void emit_op_end(Instruction*); void emit_op_enter(Instruction*); void emit_op_create_activation(Instruction*); void emit_op_eq(Instruction*); void emit_op_eq_null(Instruction*); void emit_op_get_by_id(Instruction*); void emit_op_get_arguments_length(Instruction*); void emit_op_get_by_val(Instruction*); void emit_op_get_argument_by_val(Instruction*); void emit_op_get_by_pname(Instruction*); void emit_op_get_global_var(Instruction*); void emit_op_get_scoped_var(Instruction*); void emit_op_init_lazy_reg(Instruction*); void emit_op_check_has_instance(Instruction*); void emit_op_instanceof(Instruction*); void emit_op_jeq_null(Instruction*); void emit_op_jfalse(Instruction*); void emit_op_jmp(Instruction*); void emit_op_jmp_scopes(Instruction*); void emit_op_jneq_null(Instruction*); void emit_op_jneq_ptr(Instruction*); void emit_op_jless(Instruction*); void emit_op_jlesseq(Instruction*); void emit_op_jgreater(Instruction*); void emit_op_jgreatereq(Instruction*); void emit_op_jnless(Instruction*); void emit_op_jnlesseq(Instruction*); void emit_op_jngreater(Instruction*); void emit_op_jngreatereq(Instruction*); void emit_op_jsr(Instruction*); void emit_op_jtrue(Instruction*); void emit_op_loop(Instruction*); void emit_op_loop_hint(Instruction*); void emit_op_loop_if_less(Instruction*); void emit_op_loop_if_lesseq(Instruction*); void emit_op_loop_if_greater(Instruction*); void emit_op_loop_if_greatereq(Instruction*); void emit_op_loop_if_true(Instruction*); void emit_op_loop_if_false(Instruction*); void emit_op_lshift(Instruction*); void emit_op_method_check(Instruction*); void emit_op_mod(Instruction*); void emit_op_mov(Instruction*); void emit_op_mul(Instruction*); void emit_op_negate(Instruction*); void emit_op_neq(Instruction*); void emit_op_neq_null(Instruction*); void emit_op_new_array(Instruction*); void emit_op_new_array_buffer(Instruction*); void emit_op_new_func(Instruction*); void emit_op_new_func_exp(Instruction*); void emit_op_new_object(Instruction*); void emit_op_new_regexp(Instruction*); void emit_op_get_pnames(Instruction*); void emit_op_next_pname(Instruction*); void emit_op_not(Instruction*); void emit_op_nstricteq(Instruction*); void emit_op_pop_scope(Instruction*); void emit_op_post_dec(Instruction*); void emit_op_post_inc(Instruction*); void emit_op_pre_dec(Instruction*); void emit_op_pre_inc(Instruction*); void emit_op_profile_did_call(Instruction*); void emit_op_profile_will_call(Instruction*); void emit_op_push_new_scope(Instruction*); void emit_op_push_scope(Instruction*); void emit_op_put_by_id(Instruction*); void emit_op_put_by_index(Instruction*); void emit_op_put_by_val(Instruction*); void emit_op_put_getter(Instruction*); void emit_op_put_global_var(Instruction*); void emit_op_put_scoped_var(Instruction*); void emit_op_put_setter(Instruction*); void emit_op_resolve(Instruction*); void emit_op_resolve_base(Instruction*); void emit_op_ensure_property_exists(Instruction*); void emit_op_resolve_global(Instruction*, bool dynamic = false); void emit_op_resolve_global_dynamic(Instruction*); void emit_op_resolve_skip(Instruction*); void emit_op_resolve_with_base(Instruction*); void emit_op_resolve_with_this(Instruction*); void emit_op_ret(Instruction*); void emit_op_ret_object_or_this(Instruction*); void emit_op_rshift(Instruction*); void emit_op_sret(Instruction*); void emit_op_strcat(Instruction*); void emit_op_stricteq(Instruction*); void emit_op_sub(Instruction*); void emit_op_switch_char(Instruction*); void emit_op_switch_imm(Instruction*); void emit_op_switch_string(Instruction*); void emit_op_tear_off_activation(Instruction*); void emit_op_tear_off_arguments(Instruction*); void emit_op_throw(Instruction*); void emit_op_throw_reference_error(Instruction*); void emit_op_to_jsnumber(Instruction*); void emit_op_to_primitive(Instruction*); void emit_op_unexpected_load(Instruction*); void emit_op_urshift(Instruction*); #if ENABLE(JIT_USE_SOFT_MODULO) void softModulo(); #endif void emitSlow_op_add(Instruction*, Vector::iterator&); void emitSlow_op_bitand(Instruction*, Vector::iterator&); void emitSlow_op_bitnot(Instruction*, Vector::iterator&); void emitSlow_op_bitor(Instruction*, Vector::iterator&); void emitSlow_op_bitxor(Instruction*, Vector::iterator&); void emitSlow_op_call(Instruction*, Vector::iterator&); void emitSlow_op_call_eval(Instruction*, Vector::iterator&); void emitSlow_op_call_varargs(Instruction*, Vector::iterator&); void emitSlow_op_construct(Instruction*, Vector::iterator&); void emitSlow_op_convert_this(Instruction*, Vector::iterator&); void emitSlow_op_create_this(Instruction*, Vector::iterator&); void emitSlow_op_div(Instruction*, Vector::iterator&); void emitSlow_op_eq(Instruction*, Vector::iterator&); void emitSlow_op_get_by_id(Instruction*, Vector::iterator&); void emitSlow_op_get_arguments_length(Instruction*, Vector::iterator&); void emitSlow_op_get_by_val(Instruction*, Vector::iterator&); void emitSlow_op_get_argument_by_val(Instruction*, Vector::iterator&); void emitSlow_op_get_by_pname(Instruction*, Vector::iterator&); void emitSlow_op_check_has_instance(Instruction*, Vector::iterator&); void emitSlow_op_instanceof(Instruction*, Vector::iterator&); void emitSlow_op_jfalse(Instruction*, Vector::iterator&); void emitSlow_op_jless(Instruction*, Vector::iterator&); void emitSlow_op_jlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jgreater(Instruction*, Vector::iterator&); void emitSlow_op_jgreatereq(Instruction*, Vector::iterator&); void emitSlow_op_jnless(Instruction*, Vector::iterator&); void emitSlow_op_jnlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jngreater(Instruction*, Vector::iterator&); void emitSlow_op_jngreatereq(Instruction*, Vector::iterator&); void emitSlow_op_jtrue(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_less(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_lesseq(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_greater(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_greatereq(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_true(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_false(Instruction*, Vector::iterator&); void emitSlow_op_lshift(Instruction*, Vector::iterator&); void emitSlow_op_method_check(Instruction*, Vector::iterator&); void emitSlow_op_mod(Instruction*, Vector::iterator&); void emitSlow_op_mul(Instruction*, Vector::iterator&); void emitSlow_op_negate(Instruction*, Vector::iterator&); void emitSlow_op_neq(Instruction*, Vector::iterator&); void emitSlow_op_new_object(Instruction*, Vector::iterator&); void emitSlow_op_not(Instruction*, Vector::iterator&); void emitSlow_op_nstricteq(Instruction*, Vector::iterator&); void emitSlow_op_post_dec(Instruction*, Vector::iterator&); void emitSlow_op_post_inc(Instruction*, Vector::iterator&); void emitSlow_op_pre_dec(Instruction*, Vector::iterator&); void emitSlow_op_pre_inc(Instruction*, Vector::iterator&); void emitSlow_op_put_by_id(Instruction*, Vector::iterator&); void emitSlow_op_put_by_val(Instruction*, Vector::iterator&); void emitSlow_op_resolve_global(Instruction*, Vector::iterator&); void emitSlow_op_resolve_global_dynamic(Instruction*, Vector::iterator&); void emitSlow_op_rshift(Instruction*, Vector::iterator&); void emitSlow_op_stricteq(Instruction*, Vector::iterator&); void emitSlow_op_sub(Instruction*, Vector::iterator&); void emitSlow_op_to_jsnumber(Instruction*, Vector::iterator&); void emitSlow_op_to_primitive(Instruction*, Vector::iterator&); void emitSlow_op_urshift(Instruction*, Vector::iterator&); void emitSlow_op_new_func(Instruction*, Vector::iterator&); void emitSlow_op_new_func_exp(Instruction*, Vector::iterator&); void emitRightShift(Instruction*, bool isUnsigned); void emitRightShiftSlowCase(Instruction*, Vector::iterator&, bool isUnsigned); /* This function is deprecated. */ void emitGetJITStubArg(unsigned argumentNumber, RegisterID dst); void emitInitRegister(unsigned dst); void emitPutToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry entry); void emitPutCellToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry); void emitPutIntToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry); void emitPutImmediateToCallFrameHeader(void* value, RegisterFile::CallFrameHeaderEntry entry); void emitGetFromCallFrameHeaderPtr(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from = callFrameRegister); void emitGetFromCallFrameHeader32(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from = callFrameRegister); JSValue getConstantOperand(unsigned src); bool isOperandConstantImmediateInt(unsigned src); bool isOperandConstantImmediateChar(unsigned src); bool atJumpTarget(); Jump getSlowCase(Vector::iterator& iter) { return iter++->from; } void linkSlowCase(Vector::iterator& iter) { iter->from.link(this); ++iter; } void linkDummySlowCase(Vector::iterator& iter) { ASSERT(!iter->from.isSet()); ++iter; } void linkSlowCaseIfNotJSCell(Vector::iterator&, int virtualRegisterIndex); Jump checkStructure(RegisterID reg, Structure* structure); void restoreArgumentReference(); void restoreArgumentReferenceForTrampoline(); void updateTopCallFrame(); Call emitNakedCall(CodePtr function = CodePtr()); void preserveReturnAddressAfterCall(RegisterID); void restoreReturnAddressBeforeReturn(RegisterID); void restoreReturnAddressBeforeReturn(Address); // Loads the character value of a single character string into dst. void emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures); enum OptimizationCheckKind { LoopOptimizationCheck, RetOptimizationCheck }; #if ENABLE(DFG_JIT) void emitOptimizationCheck(OptimizationCheckKind); #else void emitOptimizationCheck(OptimizationCheckKind) { } #endif void emitTimeoutCheck(); #ifndef NDEBUG void printBytecodeOperandTypes(unsigned src1, unsigned src2); #endif #if ENABLE(SAMPLING_FLAGS) void setSamplingFlag(int32_t); void clearSamplingFlag(int32_t); #endif #if ENABLE(SAMPLING_COUNTERS) void emitCount(AbstractSamplingCounter&, int32_t = 1); #endif #if ENABLE(OPCODE_SAMPLING) void sampleInstruction(Instruction*, bool = false); #endif #if ENABLE(CODEBLOCK_SAMPLING) void sampleCodeBlock(CodeBlock*); #else void sampleCodeBlock(CodeBlock*) {} #endif #if ENABLE(DFG_JIT) bool canBeOptimized() { return m_canBeOptimized; } bool shouldEmitProfiling() { return m_canBeOptimized; } #else bool canBeOptimized() { return false; } // Enables use of value profiler with tiered compilation turned off, // in which case all code gets profiled. bool shouldEmitProfiling() { return true; } #endif Interpreter* m_interpreter; JSGlobalData* m_globalData; CodeBlock* m_codeBlock; Vector m_calls; Vector