/*
* Copyright (C) 2008, 2012, 2013 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)
// 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(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 "JITDisassembler.h"
#include "JITInlineCacheGenerator.h"
#include "JSInterfaceJIT.h"
#include "LegacyProfiler.h"
#include "Opcode.h"
#include "ResultType.h"
#include "SamplingTool.h"
#include "UnusedPointer.h"
namespace JSC {
class ArrayAllocationProfile;
class CodeBlock;
class FunctionExecutable;
class JIT;
class JSPropertyNameIterator;
class Identifier;
class Interpreter;
class JSScope;
class JSStack;
class MarkedAllocator;
class Register;
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 ByValCompilationInfo {
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;
};
struct StructureStubCompilationInfo {
MacroAssembler::DataLabelPtr hotPathBegin;
MacroAssembler::Call hotPathOther;
MacroAssembler::Call callReturnLocation;
CallLinkInfo::CallType callType;
unsigned bytecodeIndex;
};
// 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 JITSlowPathCall;
friend class JITStubCall;
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 CompilationResult compile(VM* vm, CodeBlock* codeBlock, JITCompilationEffort effort)
{
return JIT(vm, codeBlock).privateCompile(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 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 void compileDirectPutByVal(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 linkFor(ExecState*, JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, CodePtr, CallLinkInfo*, VM*, CodeSpecializationKind);
static void linkSlowCall(CodeBlock* callerCodeBlock, CallLinkInfo*);
static unsigned frameRegisterCountFor(CodeBlock* codeBlock)
{
return codeBlock->m_numCalleeRegisters;
}
private:
JIT(VM*, CodeBlock* = 0);
void privateCompileMainPass();
void privateCompileLinkPass();
void privateCompileSlowCases();
CompilationResult privateCompile(JITCompilationEffort);
void privateCompileClosureCall(CallLinkInfo*, CodeBlock* calleeCodeBlock, Structure*, ExecutableBase*, MacroAssemblerCodePtr);
void privateCompileGetByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode);
void privateCompilePutByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode);
Label privateCompileCTINativeCall(VM*, bool isConstruct = false);
CodeRef privateCompileCTINativeCall(VM*, NativeFunction);
void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress);
// Add a call out from JIT code, without an exception check.
Call appendCall(const FunctionPtr& function)
{
Call functionCall = call();
m_calls.append(CallRecord(functionCall, m_bytecodeOffset, function.value()));
return functionCall;
}
void exceptionCheck(Jump jumpToHandler)
{
m_exceptionChecks.append(jumpToHandler);
}
void exceptionCheck()
{
m_exceptionChecks.append(emitExceptionCheck());
}
void exceptionCheckWithCallFrameRollback()
{
m_exceptionChecksWithCallFrameRollback.append(emitExceptionCheck());
}
void privateCompileExceptionHandlers();
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(Instruction*);
void compileCallEvalSlowCase(Instruction*, Vector::iterator&);
void emitPutCallResult(Instruction*);
enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq };
void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type);
bool isOperandConstantImmediateDouble(int 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, ShouldFilterValue, ShouldFilterBaseAndValue };
// value register in write barrier is used before any scratch registers
// so may safely be the same as either of the scratch registers.
Jump checkMarkWord(RegisterID owner, RegisterID scratch1, RegisterID scratch2);
Jump checkMarkWord(JSCell* owner);
void emitWriteBarrier(unsigned owner, unsigned value, WriteBarrierMode);
void emitWriteBarrier(JSCell* owner, unsigned value, WriteBarrierMode);
/*
void emitWriteBarrier(RegisterID owner, RegisterID valueTag, RegisterID scratch1, RegisterID scratch2, WriteBarrierMode);
void emitWriteBarrier(JSCell* owner, RegisterID value, WriteBarrierMode);
*/
template // 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(int op1, int op2, int& 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 emitStoreCell(int index, RegisterID payload, bool indexIsCell = false);
void emitStoreBool(int index, RegisterID payload, bool indexIsBool = false);
void emitStoreDouble(int index, FPRegisterID value);
void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex);
void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex, RegisterID tag);
void compileGetByIdHotPath(const Identifier*);
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(int dst, int op, int32_t constant, ResultType opType);
void emitSub32Constant(int dst, int op, int32_t constant, ResultType opType);
void emitBinaryDoubleOp(OpcodeID, int dst, int op1, int op2, OperandTypes, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters = true, bool op2IsInRegisters = true);
#else // USE(JSVALUE32_64)
void emitGetVirtualRegister(int src, RegisterID dst);
void emitGetVirtualRegister(VirtualRegister src, RegisterID dst);
void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2);
void emitGetVirtualRegisters(VirtualRegister src1, RegisterID dst1, VirtualRegister src2, RegisterID dst2);
void emitPutVirtualRegister(int dst, RegisterID from = regT0);
void emitPutVirtualRegister(VirtualRegister dst, RegisterID from = regT0);
void emitStoreCell(int dst, RegisterID payload, bool /* only used in JSValue32_64 */ = false)
{
emitPutVirtualRegister(dst, payload);
}
void emitStoreCell(VirtualRegister dst, RegisterID payload)
{
emitPutVirtualRegister(dst, payload);
}
int32_t getConstantOperandImmediateInt(int src);
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, int dst, int src1, int src2, OperandTypes opi);
void compileBinaryArithOpSlowCase(Instruction*, OpcodeID, Vector::iterator&, int dst, int src1, int src2, OperandTypes, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase);
void compileGetByIdHotPath(int baseVReg, const Identifier*);
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)
void emit_compareAndJump(OpcodeID, int op1, int op2, unsigned target, RelationalCondition);
void emit_compareAndJumpSlow(int op1, int op2, unsigned target, DoubleCondition, size_t (JIT_OPERATION *operation)(ExecState*, EncodedJSValue, EncodedJSValue), bool invert, Vector::iterator&);
void emit_op_touch_entry(Instruction*);
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_captured_mov(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_captured_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_unsigned(Instruction*);
void emit_op_urshift(Instruction*);
void emitSlow_op_add(Instruction*, Vector::iterator&);
void emitSlow_op_bitand(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_captured_mov(Instruction*, Vector::iterator&);
void emitSlow_op_construct(Instruction*, Vector::iterator&);
void emitSlow_op_to_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_callee(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_hint(Instruction*, Vector::iterator&);
void emitSlow_op_lshift(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_dec(Instruction*, Vector::iterator&);
void emitSlow_op_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_rshift(Instruction*, Vector::iterator&);
void emitSlow_op_stricteq(Instruction*, Vector::iterator&);
void emitSlow_op_sub(Instruction*, Vector::iterator&);
void emitSlow_op_to_number(Instruction*, Vector::iterator&);
void emitSlow_op_to_primitive(Instruction*, Vector::iterator&);
void emitSlow_op_unsigned(Instruction*, Vector::iterator&);
void emitSlow_op_urshift(Instruction*, Vector::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::iterator&);
void emitSlow_op_get_from_scope(Instruction*, Vector::iterator&);
void emitSlow_op_put_to_scope(Instruction*, Vector::iterator&);
void emitRightShift(Instruction*, bool isUnsigned);
void emitRightShiftSlowCase(Instruction*, Vector::iterator&, bool isUnsigned);
void emitVarInjectionCheck(bool needsVarInjectionChecks);
void emitResolveClosure(int dst, bool needsVarInjectionChecks, unsigned depth);
void emitLoadWithStructureCheck(int scope, Structure** structureSlot);
void emitGetGlobalProperty(uintptr_t* operandSlot);
void emitGetGlobalVar(uintptr_t operand);
void emitGetClosureVar(int scope, uintptr_t operand);
void emitPutGlobalProperty(uintptr_t* operandSlot, int value);
#if USE(JSVALUE64)
void emitNotifyWrite(RegisterID value, RegisterID scratch, VariableWatchpointSet*);
#else
void emitNotifyWrite(RegisterID tag, RegisterID payload, RegisterID scratch, VariableWatchpointSet*);
#endif
void emitPutGlobalVar(uintptr_t operand, int value, VariableWatchpointSet*);
void emitPutClosureVar(int scope, uintptr_t operand, int value);
void emitInitRegister(int 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(int src);
bool isOperandConstantImmediateInt(int src);
bool isOperandConstantImmediateChar(int src);
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);
MacroAssembler::Call appendCallWithExceptionCheck(const FunctionPtr&);
MacroAssembler::Call appendCallWithCallFrameRollbackOnException(const FunctionPtr&);
MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResult(const FunctionPtr&, int);
MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResultWithProfile(const FunctionPtr&, int);
enum WithProfileTag { WithProfile };
MacroAssembler::Call callOperation(C_JITOperation_E);
MacroAssembler::Call callOperation(C_JITOperation_EO, GPRReg);
MacroAssembler::Call callOperation(C_JITOperation_ESt, Structure*);
MacroAssembler::Call callOperation(C_JITOperation_EZ, int32_t);
MacroAssembler::Call callOperation(F_JITOperation_EJZ, GPRReg, int32_t);
MacroAssembler::Call callOperation(J_JITOperation_E, int);
MacroAssembler::Call callOperation(J_JITOperation_EAapJ, int, ArrayAllocationProfile*, GPRReg);
MacroAssembler::Call callOperation(J_JITOperation_EAapJcpZ, int, ArrayAllocationProfile*, GPRReg, int32_t);
MacroAssembler::Call callOperation(J_JITOperation_EAapJcpZ, int, ArrayAllocationProfile*, const JSValue*, int32_t);
MacroAssembler::Call callOperation(J_JITOperation_EC, int, JSCell*);
MacroAssembler::Call callOperation(V_JITOperation_EC, JSCell*);
MacroAssembler::Call callOperation(J_JITOperation_EJ, int, GPRReg);
#if USE(JSVALUE64)
MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, StringImpl*);
#else
MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, GPRReg, StringImpl*);
#endif
MacroAssembler::Call callOperation(J_JITOperation_EJIdc, int, GPRReg, const Identifier*);
MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg);
#if USE(JSVALUE64)
MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_EJJ, int, GPRReg, GPRReg);
#else
MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_EJJ, int, GPRReg, GPRReg, GPRReg, GPRReg);
#endif
MacroAssembler::Call callOperation(J_JITOperation_EP, int, void*);
MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_EPc, int, Instruction*);
MacroAssembler::Call callOperation(J_JITOperation_EZ, int, int32_t);
MacroAssembler::Call callOperation(P_JITOperation_EJS, GPRReg, size_t);
MacroAssembler::Call callOperation(P_JITOperation_EZ, int32_t);
MacroAssembler::Call callOperation(S_JITOperation_ECC, RegisterID, RegisterID);
MacroAssembler::Call callOperation(S_JITOperation_EJ, RegisterID);
MacroAssembler::Call callOperation(S_JITOperation_EJJ, RegisterID, RegisterID);
MacroAssembler::Call callOperation(S_JITOperation_EOJss, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_E);
MacroAssembler::Call callOperation(V_JITOperation_EC, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_ECC, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_ECICC, RegisterID, const Identifier*, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_EIdJZ, const Identifier*, RegisterID, int32_t);
MacroAssembler::Call callOperation(V_JITOperation_EJ, RegisterID);
#if USE(JSVALUE64)
MacroAssembler::Call callOperationNoExceptionCheck(V_JITOperation_EJ, RegisterID);
#else
MacroAssembler::Call callOperationNoExceptionCheck(V_JITOperation_EJ, RegisterID, RegisterID);
#endif
MacroAssembler::Call callOperation(V_JITOperation_EJIdJJ, RegisterID, const Identifier*, RegisterID, RegisterID);
#if USE(JSVALUE64)
MacroAssembler::Call callOperation(F_JITOperation_EFJJ, RegisterID, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_ESsiJJI, StructureStubInfo*, RegisterID, RegisterID, StringImpl*);
#else
MacroAssembler::Call callOperation(V_JITOperation_ESsiJJI, StructureStubInfo*, RegisterID, RegisterID, RegisterID, RegisterID, StringImpl*);
#endif
MacroAssembler::Call callOperation(V_JITOperation_EJJJ, RegisterID, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_EJZJ, RegisterID, int32_t, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_EJZ, RegisterID, int32_t);
MacroAssembler::Call callOperation(V_JITOperation_EPc, Instruction*);
MacroAssembler::Call callOperation(V_JITOperation_EZ, int32_t);
MacroAssembler::Call callOperationWithCallFrameRollbackOnException(J_JITOperation_E);
MacroAssembler::Call callOperationWithCallFrameRollbackOnException(V_JITOperation_ECb, CodeBlock*);
MacroAssembler::Call callOperationWithCallFrameRollbackOnException(Z_JITOperation_E);
#if USE(JSVALUE32_64)
MacroAssembler::Call callOperation(F_JITOperation_EFJJ, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID);
MacroAssembler::Call callOperation(F_JITOperation_EJZ, GPRReg, GPRReg, int32_t);
MacroAssembler::Call callOperation(J_JITOperation_EAapJ, int, ArrayAllocationProfile*, GPRReg, GPRReg);
MacroAssembler::Call callOperation(J_JITOperation_EJ, int, GPRReg, GPRReg);
MacroAssembler::Call callOperation(J_JITOperation_EJIdc, int, GPRReg, GPRReg, const Identifier*);
MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg, GPRReg, GPRReg);
MacroAssembler::Call callOperation(P_JITOperation_EJS, GPRReg, GPRReg, size_t);
MacroAssembler::Call callOperation(S_JITOperation_EJ, RegisterID, RegisterID);
MacroAssembler::Call callOperation(S_JITOperation_EJJ, RegisterID, RegisterID, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_EIdJZ, const Identifier*, RegisterID, RegisterID, int32_t);
MacroAssembler::Call callOperation(V_JITOperation_EJ, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_EJJJ, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID);
MacroAssembler::Call callOperation(V_JITOperation_EJZ, RegisterID, RegisterID, int32_t);
MacroAssembler::Call callOperation(V_JITOperation_EJZJ, RegisterID, RegisterID, int32_t, RegisterID, RegisterID);
#endif
Jump checkStructure(RegisterID reg, Structure* structure);
void updateTopCallFrame();
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(int src1, int 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;
Vector m_calls;
Vector