MacroAssembler::Call from;

unsigned bytecodeOffset;

void* to;

CallRecord()

{

}

CallRecord(MacroAssembler::Call from, unsigned bytecodeOffset, void* to = 0)

: from(from)

, bytecodeOffset(bytecodeOffset)

, to(to)

{

}

MacroAssembler::Jump from;

unsigned toBytecodeOffset;

JumpTable(MacroAssembler::Jump f, unsigned t)

: from(f)

, toBytecodeOffset(t)

{

}

MacroAssembler::Jump from;

unsigned to;

unsigned hint;

SlowCaseEntry(MacroAssembler::Jump f, unsigned t, unsigned h = 0)

: from(f)

, to(t)

, hint(h)

{

}

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;

}

enum Type { GetById, PutById } m_type;

unsigned bytecodeIndex;

MacroAssembler::Call callReturnLocation;

MacroAssembler::Label hotPathBegin;

MacroAssembler::DataLabelPtr getStructureToCompare;

MacroAssembler::PatchableJump getStructureCheck;

MacroAssembler::ConvertibleLoadLabel propertyStorageLoad;

#if USE(JSVALUE64)

MacroAssembler::DataLabelCompact getDisplacementLabel;

#else

MacroAssembler::DataLabelCompact getDisplacementLabel1;

MacroAssembler::DataLabelCompact getDisplacementLabel2;

#endif

MacroAssembler::Label getPutResult;

MacroAssembler::Label getColdPathBegin;

MacroAssembler::DataLabelPtr putStructureToCompare;

#if USE(JSVALUE64)

MacroAssembler::DataLabel32 putDisplacementLabel;

#else

MacroAssembler::DataLabel32 putDisplacementLabel1;

MacroAssembler::DataLabel32 putDisplacementLabel2;

#endif

#if !ASSERT_DISABLED

PropertyStubCompilationInfo()

: bytecodeIndex(std::numeric_limits<unsigned>::max())

{

}

#endif

PropertyStubCompilationInfo(

PropertyStubGetById_T, unsigned bytecodeIndex, MacroAssembler::Label hotPathBegin,

MacroAssembler::DataLabelPtr structureToCompare,

MacroAssembler::PatchableJump structureCheck,

MacroAssembler::ConvertibleLoadLabel propertyStorageLoad,

#if USE(JSVALUE64)

MacroAssembler::DataLabelCompact displacementLabel,

#else

MacroAssembler::DataLabelCompact displacementLabel1,

MacroAssembler::DataLabelCompact displacementLabel2,

#endif

MacroAssembler::Label putResult)

: m_type(GetById)

, bytecodeIndex(bytecodeIndex)

, hotPathBegin(hotPathBegin)

, getStructureToCompare(structureToCompare)

, getStructureCheck(structureCheck)

, propertyStorageLoad(propertyStorageLoad)

#if USE(JSVALUE64)

, getDisplacementLabel(displacementLabel)

#else

, getDisplacementLabel1(displacementLabel1)

, getDisplacementLabel2(displacementLabel2)

#endif

, getPutResult(putResult)

{

}

PropertyStubCompilationInfo(

PropertyStubPutById_T, unsigned bytecodeIndex, MacroAssembler::Label hotPathBegin,

MacroAssembler::DataLabelPtr structureToCompare,

MacroAssembler::ConvertibleLoadLabel propertyStorageLoad,

#if USE(JSVALUE64)

MacroAssembler::DataLabel32 displacementLabel

#else

MacroAssembler::DataLabel32 displacementLabel1,

MacroAssembler::DataLabel32 displacementLabel2

#endif

)

: m_type(PutById)

, bytecodeIndex(bytecodeIndex)

, hotPathBegin(hotPathBegin)

, propertyStorageLoad(propertyStorageLoad)

, putStructureToCompare(structureToCompare)

#if USE(JSVALUE64)

, putDisplacementLabel(displacementLabel)

#else

, putDisplacementLabel1(displacementLabel1)

, putDisplacementLabel2(displacementLabel2)

#endif

{

}

void slowCaseInfo(PropertyStubGetById_T, MacroAssembler::Label coldPathBegin, MacroAssembler::Call call)

{

ASSERT(m_type == GetById);

callReturnLocation = call;

getColdPathBegin = coldPathBegin;

}

void slowCaseInfo(PropertyStubPutById_T, MacroAssembler::Call call)

{

ASSERT(m_type == PutById);

callReturnLocation = call;

}

void copyToStubInfo(StructureStubInfo& info, LinkBuffer &patchBuffer);

ByValCompilationInfo() { }

ByValCompilationInfo(unsigned bytecodeIndex, MacroAssembler::PatchableJump badTypeJump, JITArrayMode arrayMode, MacroAssembler::Label doneTarget)

: bytecodeIndex(bytecodeIndex)

, badTypeJump(badTypeJump)

, arrayMode(arrayMode)

, doneTarget(doneTarget)

{

}

unsigned bytecodeIndex;

MacroAssembler::PatchableJump badTypeJump;

JITArrayMode arrayMode;

MacroAssembler::Label doneTarget;

MacroAssembler::Label slowPathTarget;

MacroAssembler::Call returnAddress;

MacroAssembler::DataLabelPtr hotPathBegin;

MacroAssembler::Call hotPathOther;

MacroAssembler::Call callReturnLocation;

CallLinkInfo::CallType callType;

unsigned bytecodeIndex;

friend class JITSlowPathCall;

friend class JITStubCall;

friend struct PropertyStubCompilationInfo;

using MacroAssembler::Jump;

using MacroAssembler::JumpList;

using MacroAssembler::Label;

static const uintptr_t patchGetByIdDefaultStructure = unusedPointer;

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 PassRefPtr<JITCode> compile(VM* vm, CodeBlock* codeBlock, JITCompilationEffort effort, CodePtr* functionEntryArityCheck = 0)

{

return JIT(vm, codeBlock).privateCompile(functionEntryArityCheck, effort);

}

static void compileClosureCall(VM* vm, CallLinkInfo* callLinkInfo, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr)

{

JIT jit(vm, callerCodeBlock);

jit.m_bytecodeOffset = callLinkInfo->codeOrigin.bytecodeIndex;

jit.privateCompileClosureCall(callLinkInfo, calleeCodeBlock, expectedStructure, expectedExecutable, codePtr);

}

static void compileGetByIdProto(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = stubInfo->codeOrigin.bytecodeIndex;

jit.privateCompileGetByIdProto(stubInfo, structure, prototypeStructure, ident, slot, cachedOffset, returnAddress, callFrame);

}

static void compileGetByIdSelfList(VM* vm, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = stubInfo->codeOrigin.bytecodeIndex;

jit.privateCompileGetByIdSelfList(stubInfo, polymorphicStructures, currentIndex, structure, ident, slot, cachedOffset);

}

static void compileGetByIdProtoList(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = stubInfo->codeOrigin.bytecodeIndex;

jit.privateCompileGetByIdProtoList(stubInfo, prototypeStructureList, currentIndex, structure, prototypeStructure, ident, slot, cachedOffset, callFrame);

}

static void compileGetByIdChainList(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = stubInfo->codeOrigin.bytecodeIndex;

jit.privateCompileGetByIdChainList(stubInfo, prototypeStructureList, currentIndex, structure, chain, count, ident, slot, cachedOffset, callFrame);

}

static void compileGetByIdChain(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = stubInfo->codeOrigin.bytecodeIndex;

jit.privateCompileGetByIdChain(stubInfo, structure, chain, count, ident, slot, cachedOffset, returnAddress, callFrame);

}

static void compilePutByIdTransition(VM* vm, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, PropertyOffset cachedOffset, StructureChain* chain, ReturnAddressPtr returnAddress, bool direct)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = stubInfo->codeOrigin.bytecodeIndex;

jit.privateCompilePutByIdTransition(stubInfo, oldStructure, newStructure, cachedOffset, chain, returnAddress, direct);

}

static void compileGetByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = byValInfo->bytecodeIndex;

jit.privateCompileGetByVal(byValInfo, returnAddress, arrayMode);

}

static void compilePutByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = byValInfo->bytecodeIndex;

jit.privateCompilePutByVal(byValInfo, returnAddress, arrayMode);

}

static CodeRef compileCTINativeCall(VM* vm, NativeFunction func)

{

if (!vm->canUseJIT()) {

#if ENABLE(LLINT)

return CodeRef::createLLIntCodeRef(llint_native_call_trampoline);

#else

return CodeRef();

#endif

}

JIT jit(vm, 0);

return jit.privateCompileCTINativeCall(vm, func);

}

static void resetPatchGetById(RepatchBuffer&, StructureStubInfo*);

static void resetPatchPutById(RepatchBuffer&, StructureStubInfo*);

static void patchGetByIdSelf(CodeBlock*, StructureStubInfo*, Structure*, PropertyOffset cachedOffset, ReturnAddressPtr);

static void patchPutByIdReplace(CodeBlock*, StructureStubInfo*, Structure*, PropertyOffset cachedOffset, ReturnAddressPtr, bool direct);

static void compilePatchGetArrayLength(VM* vm, CodeBlock* codeBlock, ReturnAddressPtr returnAddress)

{

JIT jit(vm, codeBlock);

#if ENABLE(DFG_JIT)

// Force profiling to be enabled during stub generation.

jit.m_canBeOptimized = true;

jit.m_canBeOptimizedOrInlined = true;

jit.m_shouldEmitProfiling = true;

#endif // ENABLE(DFG_JIT)

return jit.privateCompilePatchGetArrayLength(returnAddress);

}

static void linkFor(ExecState*, JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, CodePtr, CallLinkInfo*, VM*, CodeSpecializationKind);

static void linkSlowCall(CodeBlock* callerCodeBlock, CallLinkInfo*);

private:

JIT(VM*, CodeBlock* = 0);

void privateCompileMainPass();

void privateCompileLinkPass();

void privateCompileSlowCases();

PassRefPtr<JITCode> privateCompile(CodePtr* functionEntryArityCheck, JITCompilationEffort);

void privateCompileClosureCall(CallLinkInfo*, CodeBlock* calleeCodeBlock, Structure*, ExecutableBase*, MacroAssemblerCodePtr);

void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, ReturnAddressPtr, CallFrame*);

void privateCompileGetByIdSelfList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset);

void privateCompileGetByIdProtoList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, CallFrame*);

void privateCompileGetByIdChainList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, StructureChain*, size_t count, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, CallFrame*);

void privateCompileGetByIdChain(StructureStubInfo*, Structure*, StructureChain*, size_t count, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, ReturnAddressPtr, CallFrame*);

void privateCompilePutByIdTransition(StructureStubInfo*, Structure*, Structure*, PropertyOffset cachedOffset, StructureChain*, ReturnAddressPtr, bool direct);

void privateCompileGetByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode);

void privateCompilePutByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode);

Label privateCompileCTINativeCall(VM*, bool isConstruct = false);

CodeRef privateCompileCTINativeCall(VM*, 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<SlowCaseEntry>::iterator&, unsigned callLinkInfoIndex);

void compileLoadVarargs(Instruction*);

void compileCallEval(Instruction*);

void compileCallEvalSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitPutCallResult(Instruction*);

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 addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, RegisterID scratch);

void addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, JumpList& failureCases, RegisterID scratch);

void testPrototype(JSValue, JumpList& failureCases, StructureStubInfo*);

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<typename StructureType> // StructureType can be RegisterID or ImmPtr.

void emitAllocateJSObject(RegisterID allocator, StructureType, RegisterID result, RegisterID scratch);

#if ENABLE(VALUE_PROFILER)

// This assumes that the value to profile is in regT0 and that regT3 is available for

// scratch.

void emitValueProfilingSite(ValueProfile*, RegisterID);

void emitValueProfilingSite(unsigned bytecodeOffset, RegisterID);

void emitValueProfilingSite(RegisterID);

#else

void emitValueProfilingSite(unsigned, RegisterID) { }

void emitValueProfilingSite(RegisterID) { }

#endif

void emitArrayProfilingSite(RegisterID structureAndIndexingType, RegisterID scratch, ArrayProfile*);

void emitArrayProfilingSiteForBytecodeIndex(RegisterID structureAndIndexingType, RegisterID scratch, unsigned bytecodeIndex);

void emitArrayProfileStoreToHoleSpecialCase(ArrayProfile*);

void emitArrayProfileOutOfBoundsSpecialCase(ArrayProfile*);

JITArrayMode chooseArrayMode(ArrayProfile*);

// Property is in regT1, base is in regT0. regT2 contains indexing type.

// Property is int-checked and zero extended. Base is cell checked.

// Structure is already profiled. Returns the slow cases. Fall-through

// case contains result in regT0, and it is not yet profiled.

JumpList emitInt32GetByVal(Instruction* instruction, PatchableJump& badType) { return emitContiguousGetByVal(instruction, badType, Int32Shape); }

JumpList emitDoubleGetByVal(Instruction*, PatchableJump& badType);

JumpList emitContiguousGetByVal(Instruction*, PatchableJump& badType, IndexingType expectedShape = ContiguousShape);

JumpList emitArrayStorageGetByVal(Instruction*, PatchableJump& badType);

JumpList emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType);

JumpList emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType);

// Property is in regT0, base is in regT0. regT2 contains indecing type.

// The value to store is not yet loaded. Property is int-checked and

// zero-extended. Base is cell checked. Structure is already profiled.

// returns the slow cases.

JumpList emitInt32PutByVal(Instruction* currentInstruction, PatchableJump& badType)

{

return emitGenericContiguousPutByVal(currentInstruction, badType, Int32Shape);

}

JumpList emitDoublePutByVal(Instruction* currentInstruction, PatchableJump& badType)

{

return emitGenericContiguousPutByVal(currentInstruction, badType, DoubleShape);

}

JumpList emitContiguousPutByVal(Instruction* currentInstruction, PatchableJump& badType)

{

return emitGenericContiguousPutByVal(currentInstruction, badType);

}

JumpList emitGenericContiguousPutByVal(Instruction*, PatchableJump& badType, IndexingType indexingShape = ContiguousShape);

JumpList emitArrayStoragePutByVal(Instruction*, PatchableJump& badType);

JumpList emitIntTypedArrayPutByVal(Instruction*, PatchableJump& badType, TypedArrayType);

JumpList emitFloatTypedArrayPutByVal(Instruction*, PatchableJump& badType, TypedArrayType);

enum FinalObjectMode { MayBeFinal, KnownNotFinal };

#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(const Identifier*);

void compileGetByIdSlowCase(int resultVReg, int baseVReg, const Identifier*, Vector<SlowCaseEntry>::iterator&);

void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, PropertyOffset cachedOffset);

void compileGetDirectOffset(JSObject* base, RegisterID resultTag, RegisterID resultPayload, PropertyOffset cachedOffset);

void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, RegisterID offset, FinalObjectMode = MayBeFinal);

void compilePutDirectOffset(RegisterID base, RegisterID valueTag, RegisterID valuePayload, PropertyOffset 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(ARM_TRADITIONAL)

// sequenceOpCall

static const int sequenceOpCallInstructionSpace = 12;

static const int sequenceOpCallConstantSpace = 2;

// sequenceGetByIdHotPath

static const int sequenceGetByIdHotPathInstructionSpace = 36;

static const int sequenceGetByIdHotPathConstantSpace = 4;

// sequenceGetByIdSlowCase

static const int sequenceGetByIdSlowCaseInstructionSpace = 80;

static const int sequenceGetByIdSlowCaseConstantSpace = 4;

// sequencePutById

static const int sequencePutByIdInstructionSpace = 36;

static const int sequencePutByIdConstantSpace = 4;

#elif CPU(SH4)

// sequenceOpCall

static const int sequenceOpCallInstructionSpace = 12;

static const int sequenceOpCallConstantSpace = 2;

// sequenceGetByIdHotPath

static const int sequenceGetByIdHotPathInstructionSpace = 36;

static const int sequenceGetByIdHotPathConstantSpace = 5;

// sequenceGetByIdSlowCase

static const int sequenceGetByIdSlowCaseInstructionSpace = 38;

static const int sequenceGetByIdSlowCaseConstantSpace = 4;

// sequencePutById

static const int sequencePutByIdInstructionSpace = 36;

static const int sequencePutByIdConstantSpace = 5;

#endif

#else // USE(JSVALUE32_64)

/* This function is deprecated. */

void emitGetJITStubArg(unsigned argumentNumber, RegisterID dst);

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);

void emitJumpSlowCaseIfNotJSCell(RegisterID);

void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg);

Jump emitJumpIfImmediateInteger(RegisterID);

Jump emitJumpIfNotImmediateInteger(RegisterID);

Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID);

void emitJumpSlowCaseIfNotImmediateInteger(RegisterID);

void emitJumpSlowCaseIfNotImmediateNumber(RegisterID);

void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID);

void emitFastArithReTagImmediate(RegisterID src, RegisterID dest);

void emitTagAsBoolImmediate(RegisterID reg);

void compileBinaryArithOp(OpcodeID, unsigned dst, unsigned src1, unsigned src2, OperandTypes opi);

void compileBinaryArithOpSlowCase(Instruction*, OpcodeID, Vector<SlowCaseEntry>::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase);

void compileGetByIdHotPath(int baseVReg, const Identifier*);

void compileGetByIdSlowCase(int resultVReg, int baseVReg, const Identifier*, Vector<SlowCaseEntry>::iterator&);

void compileGetDirectOffset(RegisterID base, RegisterID result, PropertyOffset cachedOffset);

void compileGetDirectOffset(JSObject* base, RegisterID result, PropertyOffset cachedOffset);

void compileGetDirectOffset(RegisterID base, RegisterID result, RegisterID offset, RegisterID scratch, FinalObjectMode = MayBeFinal);

void compilePutDirectOffset(RegisterID base, RegisterID value, PropertyOffset cachedOffset);

#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)

#define END_UNINTERRUPTED_SEQUENCE(name)

#define END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, dst)

#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<SlowCaseEntry>::iterator&);

void emit_op_add(Instruction*);

void emit_op_bitand(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_catch(Instruction*);

void emit_op_construct(Instruction*);

void emit_op_get_callee(Instruction*);

void emit_op_create_this(Instruction*);

void emit_op_to_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_init_lazy_reg(Instruction*);

void emit_op_check_has_instance(Instruction*);

void emit_op_instanceof(Instruction*);

void emit_op_is_undefined(Instruction*);

void emit_op_is_boolean(Instruction*);

void emit_op_is_number(Instruction*);

void emit_op_is_string(Instruction*);

void emit_op_jeq_null(Instruction*);

void emit_op_jfalse(Instruction*);

void emit_op_jmp(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_jtrue(Instruction*);

void emit_op_loop_hint(Instruction*);

void emit_op_lshift(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_with_size(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_dec(Instruction*);

void emit_op_inc(Instruction*);

void emit_op_profile_did_call(Instruction*);

void emit_op_profile_will_call(Instruction*);

void emit_op_push_name_scope(Instruction*);

void emit_op_push_with_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_setter(Instruction*);

void emit_op_init_global_const(Instruction*);

void emit_op_ret(Instruction*);

void emit_op_ret_object_or_this(Instruction*);

void emit_op_rshift(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_static_error(Instruction*);

void emit_op_to_number(Instruction*);

void emit_op_to_primitive(Instruction*);

void emit_op_unexpected_load(Instruction*);

void emit_op_urshift(Instruction*);

void emitSlow_op_add(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_bitand(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_bitor(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_bitxor(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_call(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_call_eval(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_call_varargs(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_construct(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_to_this(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_create_this(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_div(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_eq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_arguments_length(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_argument_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_by_pname(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_check_has_instance(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_instanceof(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jfalse(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jless(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jlesseq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jgreater(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jgreatereq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jnless(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jnlesseq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jngreater(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jngreatereq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jtrue(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_loop_hint(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_lshift(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_mod(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_mul(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_negate(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_neq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_new_object(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_not(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_nstricteq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_dec(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_inc(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_put_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_put_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_rshift(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_stricteq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_sub(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_to_number(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_to_primitive(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_urshift(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emit_op_resolve_scope(Instruction*);

void emit_op_get_from_scope(Instruction*);

void emit_op_put_to_scope(Instruction*);

void emitSlow_op_resolve_scope(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_from_scope(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_put_to_scope(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitRightShift(Instruction*, bool isUnsigned);

void emitRightShiftSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator&, bool isUnsigned);

void emitVarInjectionCheck(bool needsVarInjectionChecks);

void emitResolveClosure(unsigned dst, bool needsVarInjectionChecks, unsigned depth);

void emitLoadWithStructureCheck(unsigned scope, Structure** structureSlot);

void emitGetGlobalProperty(uintptr_t* operandSlot);

void emitGetGlobalVar(uintptr_t operand);

void emitGetClosureVar(unsigned scope, uintptr_t operand);

void emitPutGlobalProperty(uintptr_t* operandSlot, unsigned value);

void emitPutGlobalVar(uintptr_t operand, unsigned value);

void emitPutClosureVar(unsigned scope, uintptr_t operand, unsigned value);

void emitInitRegister(unsigned dst);

void emitPutIntToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry);

void emitGetFromCallFrameHeaderPtr(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister);

void emitGetFromCallFrameHeader32(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister);

#if USE(JSVALUE64)

void emitGetFromCallFrameHeader64(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister);

#endif

JSValue getConstantOperand(unsigned src);

bool isOperandConstantImmediateInt(unsigned src);

bool isOperandConstantImmediateChar(unsigned src);

bool atJumpTarget();

Jump getSlowCase(Vector<SlowCaseEntry>::iterator& iter)

{

return iter++->from;

}

void linkSlowCase(Vector<SlowCaseEntry>::iterator& iter)

{

iter->from.link(this);

++iter;

}

void linkDummySlowCase(Vector<SlowCaseEntry>::iterator& iter)

{

ASSERT(!iter->from.isSet());

++iter;

}

void linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator&, int virtualRegisterIndex);

Jump checkStructure(RegisterID reg, Structure* structure);

void restoreArgumentReferenceForTrampoline();

void updateTopCallFrame();

void reloadCallFrameFromTopCallFrame();

Call emitNakedCall(CodePtr function = CodePtr());

// Loads the character value of a single character string into dst.

void emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures);

#if ENABLE(DFG_JIT)

void emitEnterOptimizationCheck();

#else

void emitEnterOptimizationCheck() { }

#endif

#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 canBeOptimizedOrInlined() { return m_canBeOptimizedOrInlined; }

bool shouldEmitProfiling() { return m_shouldEmitProfiling; }

#else

bool canBeOptimized() { return false; }

bool canBeOptimizedOrInlined() { return false; }

// Enables use of value profiler with tiered compilation turned off,

// in which case all code gets profiled.

bool shouldEmitProfiling() { return false; }

#endif

Interpreter* m_interpreter;

VM* m_vm;

CodeBlock* m_codeBlock;

Vector<CallRecord> m_calls;

Vector<Label> m_labels;

Vector<PropertyStubCompilationInfo> m_propertyAccessCompilationInfo;

Vector<ByValCompilationInfo> m_byValCompilationInfo;

Vector<StructureStubCompilationInfo> m_callStructureStubCompilationInfo;

Vector<JumpTable> m_jmpTable;

unsigned m_bytecodeOffset;

Vector<SlowCaseEntry> m_slowCases;

Vector<SwitchRecord> m_switches;

unsigned m_propertyAccessInstructionIndex;

unsigned m_byValInstructionIndex;

unsigned m_callLinkInfoIndex;

#if USE(JSVALUE32_64)

unsigned m_jumpTargetIndex;

unsigned m_mappedBytecodeOffset;

int m_mappedVirtualRegisterIndex;

RegisterID m_mappedTag;

RegisterID m_mappedPayload;

#else

int m_lastResultBytecodeRegister;

#endif

unsigned m_jumpTargetsPosition;

#ifndef NDEBUG

#if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL

Label m_uninterruptedInstructionSequenceBegin;

int m_uninterruptedConstantSequenceBegin;

#endif

#endif

OwnPtr<JITDisassembler> m_disassembler;

RefPtr<Profiler::Compilation> m_compilation;

WeakRandom m_randomGenerator;

static CodeRef stringGetByValStubGenerator(VM*);

#if ENABLE(VALUE_PROFILER)

bool m_canBeOptimized;

bool m_canBeOptimizedOrInlined;

bool m_shouldEmitProfiling;

#endif