| /* |
| * Copyright (C) 2008-2018 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. |
| */ |
| |
| #pragma once |
| |
| #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 stabilize this. |
| #if COMPILER(GCC_OR_CLANG) |
| #define JIT_CLASS_ALIGNMENT alignas(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<int>(expected), static_cast<int>(actual)); |
| |
| #include "CodeBlock.h" |
| #include "CommonSlowPaths.h" |
| #include "JITDisassembler.h" |
| #include "JITInlineCacheGenerator.h" |
| #include "JITMathIC.h" |
| #include "JSInterfaceJIT.h" |
| #include "PCToCodeOriginMap.h" |
| #include "UnusedPointer.h" |
| |
| namespace JSC { |
| |
| enum OpcodeID : unsigned; |
| |
| class ArrayAllocationProfile; |
| class CallLinkInfo; |
| class CodeBlock; |
| class FunctionExecutable; |
| class JIT; |
| class Identifier; |
| class Interpreter; |
| class BlockDirectory; |
| class Register; |
| class StructureChain; |
| class StructureStubInfo; |
| |
| struct Instruction; |
| struct OperandTypes; |
| struct SimpleJumpTable; |
| struct StringJumpTable; |
| |
| struct CallRecord { |
| MacroAssembler::Call from; |
| unsigned bytecodeOffset; |
| FunctionPtr<OperationPtrTag> callee; |
| |
| CallRecord() |
| { |
| } |
| |
| CallRecord(MacroAssembler::Call from, unsigned bytecodeOffset, FunctionPtr<OperationPtrTag> callee) |
| : from(from) |
| , bytecodeOffset(bytecodeOffset) |
| , callee(callee) |
| { |
| } |
| }; |
| |
| struct JumpTable { |
| MacroAssembler::Jump from; |
| unsigned toBytecodeOffset; |
| |
| JumpTable(MacroAssembler::Jump f, unsigned t) |
| : from(f) |
| , toBytecodeOffset(t) |
| { |
| } |
| }; |
| |
| struct SlowCaseEntry { |
| MacroAssembler::Jump from; |
| unsigned to; |
| |
| SlowCaseEntry(MacroAssembler::Jump f, unsigned t) |
| : from(f) |
| , to(t) |
| { |
| } |
| }; |
| |
| 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(ByValInfo* byValInfo, unsigned bytecodeIndex, MacroAssembler::PatchableJump notIndexJump, MacroAssembler::PatchableJump badTypeJump, JITArrayMode arrayMode, ArrayProfile* arrayProfile, MacroAssembler::Label doneTarget, MacroAssembler::Label nextHotPathTarget) |
| : byValInfo(byValInfo) |
| , bytecodeIndex(bytecodeIndex) |
| , notIndexJump(notIndexJump) |
| , badTypeJump(badTypeJump) |
| , arrayMode(arrayMode) |
| , arrayProfile(arrayProfile) |
| , doneTarget(doneTarget) |
| , nextHotPathTarget(nextHotPathTarget) |
| { |
| } |
| |
| ByValInfo* byValInfo; |
| unsigned bytecodeIndex; |
| MacroAssembler::PatchableJump notIndexJump; |
| MacroAssembler::PatchableJump badTypeJump; |
| JITArrayMode arrayMode; |
| ArrayProfile* arrayProfile; |
| MacroAssembler::Label doneTarget; |
| MacroAssembler::Label nextHotPathTarget; |
| MacroAssembler::Label slowPathTarget; |
| MacroAssembler::Call returnAddress; |
| }; |
| |
| struct CallCompilationInfo { |
| MacroAssembler::DataLabelPtr hotPathBegin; |
| MacroAssembler::Call hotPathOther; |
| MacroAssembler::Call callReturnLocation; |
| CallLinkInfo* callLinkInfo; |
| }; |
| |
| void ctiPatchCallByReturnAddress(ReturnAddressPtr, FunctionPtr<CFunctionPtrTag> newCalleeFunction); |
| |
| class JIT_CLASS_ALIGNMENT 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: |
| JIT(VM*, CodeBlock* = 0, unsigned loopOSREntryBytecodeOffset = 0); |
| ~JIT(); |
| |
| void compileWithoutLinking(JITCompilationEffort); |
| CompilationResult link(); |
| |
| void doMainThreadPreparationBeforeCompile(); |
| |
| static CompilationResult compile(VM* vm, CodeBlock* codeBlock, JITCompilationEffort effort, unsigned bytecodeOffset = 0) |
| { |
| return JIT(vm, codeBlock, bytecodeOffset).privateCompile(effort); |
| } |
| |
| 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 compileGetByValWithCachedId(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, const Identifier& propertyName) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeOffset = byValInfo->bytecodeIndex; |
| jit.privateCompileGetByValWithCachedId(byValInfo, returnAddress, propertyName); |
| } |
| |
| 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 void compilePutByValWithCachedId(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, PutKind putKind, const Identifier& propertyName) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeOffset = byValInfo->bytecodeIndex; |
| jit.privateCompilePutByValWithCachedId(byValInfo, returnAddress, putKind, propertyName); |
| } |
| |
| static void compileHasIndexedProperty(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeOffset = byValInfo->bytecodeIndex; |
| jit.privateCompileHasIndexedProperty(byValInfo, returnAddress, arrayMode); |
| } |
| |
| static unsigned frameRegisterCountFor(CodeBlock*); |
| static int stackPointerOffsetFor(CodeBlock*); |
| |
| JS_EXPORT_PRIVATE static HashMap<CString, Seconds> compileTimeStats(); |
| |
| private: |
| void privateCompileMainPass(); |
| void privateCompileLinkPass(); |
| void privateCompileSlowCases(); |
| CompilationResult privateCompile(JITCompilationEffort); |
| |
| void privateCompileGetByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode); |
| void privateCompileGetByValWithCachedId(ByValInfo*, ReturnAddressPtr, const Identifier&); |
| void privateCompilePutByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode); |
| void privateCompilePutByValWithCachedId(ByValInfo*, ReturnAddressPtr, PutKind, const Identifier&); |
| |
| void privateCompileHasIndexedProperty(ByValInfo*, ReturnAddressPtr, JITArrayMode); |
| |
| void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress); |
| |
| // Add a call out from JIT code, without an exception check. |
| Call appendCall(const FunctionPtr<CFunctionPtrTag> function) |
| { |
| Call functionCall = call(OperationPtrTag); |
| m_calls.append(CallRecord(functionCall, m_bytecodeOffset, function.retagged<OperationPtrTag>())); |
| return functionCall; |
| } |
| |
| #if OS(WINDOWS) && CPU(X86_64) |
| Call appendCallWithSlowPathReturnType(const FunctionPtr<CFunctionPtrTag> function) |
| { |
| Call functionCall = callWithSlowPathReturnType(OperationPtrTag); |
| m_calls.append(CallRecord(functionCall, m_bytecodeOffset, function.retagged<OperationPtrTag>())); |
| return functionCall; |
| } |
| #endif |
| |
| void exceptionCheck(Jump jumpToHandler) |
| { |
| m_exceptionChecks.append(jumpToHandler); |
| } |
| |
| void exceptionCheck() |
| { |
| m_exceptionChecks.append(emitExceptionCheck(*vm())); |
| } |
| |
| void exceptionCheckWithCallFrameRollback() |
| { |
| m_exceptionChecksWithCallFrameRollback.append(emitExceptionCheck(*vm())); |
| } |
| |
| void privateCompileExceptionHandlers(); |
| |
| void addSlowCase(Jump); |
| void addSlowCase(const 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 compileSetupVarargsFrame(OpcodeID, Instruction*, CallLinkInfo*); |
| void compileCallEval(Instruction*); |
| void compileCallEvalSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitPutCallResult(Instruction*); |
| |
| enum class CompileOpStrictEqType { StrictEq, NStrictEq }; |
| void compileOpStrictEq(Instruction*, CompileOpStrictEqType); |
| void compileOpStrictEqJump(Instruction*, CompileOpStrictEqType); |
| enum class CompileOpEqType { Eq, NEq }; |
| void compileOpEqJumpSlow(Vector<SlowCaseEntry>::iterator&, CompileOpEqType, int jumpTarget); |
| bool isOperandConstantDouble(int src); |
| |
| void emitLoadDouble(int index, FPRegisterID value); |
| void emitLoadInt32ToDouble(int index, FPRegisterID value); |
| Jump emitJumpIfCellObject(RegisterID cellReg); |
| Jump emitJumpIfCellNotObject(RegisterID cellReg); |
| |
| enum WriteBarrierMode { UnconditionalWriteBarrier, ShouldFilterBase, 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. |
| void emitWriteBarrier(unsigned owner, unsigned value, WriteBarrierMode); |
| void emitWriteBarrier(JSCell* owner, unsigned value, WriteBarrierMode); |
| void emitWriteBarrier(JSCell* owner); |
| |
| // This assumes that the value to profile is in regT0 and that regT3 is available for |
| // scratch. |
| void emitValueProfilingSite(ValueProfile&); |
| void emitValueProfilingSite(unsigned bytecodeOffset); |
| void emitValueProfilingSite(); |
| void emitArrayProfilingSiteWithCell(RegisterID cell, RegisterID indexingType, ArrayProfile*); |
| void emitArrayProfilingSiteForBytecodeIndexWithCell(RegisterID cell, RegisterID indexingType, 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 emitInt32Load(Instruction* instruction, PatchableJump& badType) { return emitContiguousLoad(instruction, badType, Int32Shape); } |
| JumpList emitDoubleLoad(Instruction*, PatchableJump& badType); |
| JumpList emitContiguousLoad(Instruction*, PatchableJump& badType, IndexingType expectedShape = ContiguousShape); |
| JumpList emitArrayStorageLoad(Instruction*, PatchableJump& badType); |
| JumpList emitLoadForArrayMode(Instruction*, JITArrayMode, PatchableJump& badType); |
| |
| 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 emitDirectArgumentsGetByVal(Instruction*, PatchableJump& badType); |
| JumpList emitScopedArgumentsGetByVal(Instruction*, PatchableJump& badType); |
| JumpList emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType); |
| JumpList emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType); |
| |
| // Property is in regT1, 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); |
| |
| // Identifier check helper for GetByVal and PutByVal. |
| void emitByValIdentifierCheck(ByValInfo*, RegisterID cell, RegisterID scratch, const Identifier&, JumpList& slowCases); |
| |
| JITGetByIdGenerator emitGetByValWithCachedId(ByValInfo*, Instruction*, const Identifier&, Jump& fastDoneCase, Jump& slowDoneCase, JumpList& slowCases); |
| JITPutByIdGenerator emitPutByValWithCachedId(ByValInfo*, Instruction*, PutKind, const Identifier&, JumpList& doneCases, JumpList& slowCases); |
| |
| enum FinalObjectMode { MayBeFinal, KnownNotFinal }; |
| |
| void emitGetVirtualRegister(int src, JSValueRegs dst); |
| void emitPutVirtualRegister(int dst, JSValueRegs src); |
| |
| int32_t getOperandConstantInt(int src); |
| double getOperandConstantDouble(int src); |
| |
| #if USE(JSVALUE32_64) |
| bool getOperandConstantInt(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*); |
| |
| // Arithmetic opcode helpers |
| 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); |
| } |
| |
| Jump emitJumpIfJSCell(RegisterID); |
| Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID); |
| void emitJumpSlowCaseIfJSCell(RegisterID); |
| void emitJumpSlowCaseIfNotJSCell(RegisterID); |
| void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg); |
| Jump emitJumpIfInt(RegisterID); |
| Jump emitJumpIfNotInt(RegisterID); |
| Jump emitJumpIfNotInt(RegisterID, RegisterID, RegisterID scratch); |
| PatchableJump emitPatchableJumpIfNotInt(RegisterID); |
| void emitJumpSlowCaseIfNotInt(RegisterID); |
| void emitJumpSlowCaseIfNotNumber(RegisterID); |
| void emitJumpSlowCaseIfNotInt(RegisterID, RegisterID, RegisterID scratch); |
| |
| void emitTagBool(RegisterID); |
| |
| void compileGetByIdHotPath(int baseVReg, const Identifier*); |
| |
| #endif // USE(JSVALUE32_64) |
| |
| void emit_compareAndJump(OpcodeID, int op1, int op2, unsigned target, RelationalCondition); |
| void emit_compareUnsigned(int dst, int op1, int op2, RelationalCondition); |
| void emit_compareUnsignedAndJump(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<SlowCaseEntry>::iterator&); |
| |
| void assertStackPointerOffset(); |
| |
| 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_tail_call(Instruction*); |
| void emit_op_call_eval(Instruction*); |
| void emit_op_call_varargs(Instruction*); |
| void emit_op_tail_call_varargs(Instruction*); |
| void emit_op_tail_call_forward_arguments(Instruction*); |
| void emit_op_construct_varargs(Instruction*); |
| void emit_op_catch(Instruction*); |
| void emit_op_construct(Instruction*); |
| void emit_op_create_this(Instruction*); |
| void emit_op_to_this(Instruction*); |
| void emit_op_get_argument(Instruction*); |
| void emit_op_argument_count(Instruction*); |
| void emit_op_get_rest_length(Instruction*); |
| void emit_op_check_tdz(Instruction*); |
| void emit_op_identity_with_profile(Instruction*); |
| void emit_op_debug(Instruction*); |
| void emit_op_del_by_id(Instruction*); |
| void emit_op_del_by_val(Instruction*); |
| void emit_op_div(Instruction*); |
| void emit_op_end(Instruction*); |
| void emit_op_enter(Instruction*); |
| void emit_op_get_scope(Instruction*); |
| void emit_op_eq(Instruction*); |
| void emit_op_eq_null(Instruction*); |
| void emit_op_below(Instruction*); |
| void emit_op_beloweq(Instruction*); |
| void emit_op_try_get_by_id(Instruction*); |
| void emit_op_get_by_id(Instruction*); |
| void emit_op_get_by_id_with_this(Instruction*); |
| void emit_op_get_by_id_direct(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_init_lazy_reg(Instruction*); |
| void emit_op_overrides_has_instance(Instruction*); |
| void emit_op_instanceof(Instruction*); |
| void emit_op_instanceof_custom(Instruction*); |
| void emit_op_is_empty(Instruction*); |
| void emit_op_is_undefined(Instruction*); |
| void emit_op_is_boolean(Instruction*); |
| void emit_op_is_number(Instruction*); |
| void emit_op_is_object(Instruction*); |
| void emit_op_is_cell_with_type(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_jeq(Instruction*); |
| void emit_op_jneq(Instruction*); |
| void emit_op_jstricteq(Instruction*); |
| void emit_op_jnstricteq(Instruction*); |
| void emit_op_jbelow(Instruction*); |
| void emit_op_jbeloweq(Instruction*); |
| void emit_op_jtrue(Instruction*); |
| void emit_op_loop_hint(Instruction*); |
| void emit_op_check_traps(Instruction*); |
| void emit_op_nop(Instruction*); |
| void emit_op_super_sampler_begin(Instruction*); |
| void emit_op_super_sampler_end(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_func(Instruction*); |
| void emit_op_new_func_exp(Instruction*); |
| void emit_op_new_generator_func(Instruction*); |
| void emit_op_new_generator_func_exp(Instruction*); |
| void emit_op_new_async_func(Instruction*); |
| void emit_op_new_async_func_exp(Instruction*); |
| void emit_op_new_async_generator_func(Instruction*); |
| void emit_op_new_async_generator_func_exp(Instruction*); |
| void emit_op_new_object(Instruction*); |
| void emit_op_new_regexp(Instruction*); |
| void emit_op_not(Instruction*); |
| void emit_op_nstricteq(Instruction*); |
| void emit_op_dec(Instruction*); |
| void emit_op_inc(Instruction*); |
| void emit_op_profile_type(Instruction*); |
| void emit_op_profile_control_flow(Instruction*); |
| void emit_op_get_parent_scope(Instruction*); |
| void emit_op_put_by_id(Instruction*); |
| void emit_op_put_by_val(Instruction*); |
| void emit_op_put_getter_by_id(Instruction*); |
| void emit_op_put_setter_by_id(Instruction*); |
| void emit_op_put_getter_setter_by_id(Instruction*); |
| void emit_op_put_getter_by_val(Instruction*); |
| void emit_op_put_setter_by_val(Instruction*); |
| void emit_op_ret(Instruction*); |
| void emit_op_rshift(Instruction*); |
| void emit_op_set_function_name(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_arguments(Instruction*); |
| void emit_op_throw(Instruction*); |
| void emit_op_to_number(Instruction*); |
| void emit_op_to_string(Instruction*); |
| void emit_op_to_object(Instruction*); |
| void emit_op_to_primitive(Instruction*); |
| void emit_op_unexpected_load(Instruction*); |
| void emit_op_unsigned(Instruction*); |
| void emit_op_urshift(Instruction*); |
| void emit_op_has_structure_property(Instruction*); |
| void emit_op_has_indexed_property(Instruction*); |
| void emit_op_get_direct_pname(Instruction*); |
| void emit_op_enumerator_structure_pname(Instruction*); |
| void emit_op_enumerator_generic_pname(Instruction*); |
| void emit_op_log_shadow_chicken_prologue(Instruction*); |
| void emit_op_log_shadow_chicken_tail(Instruction*); |
| |
| void emitSlow_op_add(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_tail_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_tail_call_varargs(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_tail_call_forward_arguments(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_construct_varargs(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_construct(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_eq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_callee(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_try_get_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id_with_this(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id_direct(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_instanceof(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_instanceof_custom(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_jeq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jneq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jstricteq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jnstricteq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jtrue(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_loop_hint(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_check_traps(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_put_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_sub(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_has_indexed_property(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 emit_op_get_from_arguments(Instruction*); |
| void emit_op_put_to_arguments(Instruction*); |
| void emitSlow_op_get_from_scope(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_to_scope(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| |
| void emitSlowCaseCall(Instruction*, Vector<SlowCaseEntry>::iterator&, SlowPathFunction); |
| |
| void emitRightShift(Instruction*, bool isUnsigned); |
| void emitRightShiftSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator&, bool isUnsigned); |
| |
| void emitNewFuncCommon(Instruction*); |
| void emitNewFuncExprCommon(Instruction*); |
| void emitVarInjectionCheck(bool needsVarInjectionChecks); |
| void emitResolveClosure(int dst, int scope, bool needsVarInjectionChecks, unsigned depth); |
| void emitLoadWithStructureCheck(int scope, Structure** structureSlot); |
| #if USE(JSVALUE64) |
| void emitGetVarFromPointer(JSValue* operand, GPRReg); |
| void emitGetVarFromIndirectPointer(JSValue** operand, GPRReg); |
| #else |
| void emitGetVarFromIndirectPointer(JSValue** operand, GPRReg tag, GPRReg payload); |
| void emitGetVarFromPointer(JSValue* operand, GPRReg tag, GPRReg payload); |
| #endif |
| void emitGetClosureVar(int scope, uintptr_t operand); |
| void emitNotifyWrite(WatchpointSet*); |
| void emitNotifyWrite(GPRReg pointerToSet); |
| void emitPutGlobalVariable(JSValue* operand, int value, WatchpointSet*); |
| void emitPutGlobalVariableIndirect(JSValue** addressOfOperand, int value, WatchpointSet**); |
| void emitPutClosureVar(int scope, uintptr_t operand, int value, WatchpointSet*); |
| |
| void emitInitRegister(int dst); |
| |
| void emitPutIntToCallFrameHeader(RegisterID from, int entry); |
| |
| JSValue getConstantOperand(int src); |
| bool isOperandConstantInt(int src); |
| bool isOperandConstantChar(int src); |
| |
| template <typename Generator, typename ProfiledFunction, typename NonProfiledFunction> |
| void emitMathICFast(JITUnaryMathIC<Generator>*, Instruction*, ProfiledFunction, NonProfiledFunction); |
| template <typename Generator, typename ProfiledFunction, typename NonProfiledFunction> |
| void emitMathICFast(JITBinaryMathIC<Generator>*, Instruction*, ProfiledFunction, NonProfiledFunction); |
| |
| template <typename Generator, typename ProfiledRepatchFunction, typename ProfiledFunction, typename RepatchFunction> |
| void emitMathICSlow(JITBinaryMathIC<Generator>*, Instruction*, ProfiledRepatchFunction, ProfiledFunction, RepatchFunction); |
| template <typename Generator, typename ProfiledRepatchFunction, typename ProfiledFunction, typename RepatchFunction> |
| void emitMathICSlow(JITUnaryMathIC<Generator>*, Instruction*, ProfiledRepatchFunction, ProfiledFunction, RepatchFunction); |
| |
| Jump getSlowCase(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| return iter++->from; |
| } |
| void linkSlowCase(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| if (iter->from.isSet()) |
| iter->from.link(this); |
| ++iter; |
| } |
| void linkDummySlowCase(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| ASSERT(!iter->from.isSet()); |
| ++iter; |
| } |
| void linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator&, int virtualRegisterIndex); |
| void linkAllSlowCasesForBytecodeOffset(Vector<SlowCaseEntry>& slowCases, |
| Vector<SlowCaseEntry>::iterator&, unsigned bytecodeOffset); |
| |
| void linkAllSlowCases(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| linkAllSlowCasesForBytecodeOffset(m_slowCases, iter, m_bytecodeOffset); |
| } |
| |
| MacroAssembler::Call appendCallWithExceptionCheck(const FunctionPtr<CFunctionPtrTag>); |
| #if OS(WINDOWS) && CPU(X86_64) |
| MacroAssembler::Call appendCallWithExceptionCheckAndSlowPathReturnType(const FunctionPtr<CFunctionPtrTag>); |
| #endif |
| MacroAssembler::Call appendCallWithCallFrameRollbackOnException(const FunctionPtr<CFunctionPtrTag>); |
| MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResult(const FunctionPtr<CFunctionPtrTag>, int); |
| MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResultWithProfile(const FunctionPtr<CFunctionPtrTag>, int); |
| |
| template<typename OperationType, typename... Args> |
| std::enable_if_t<FunctionTraits<OperationType>::hasResult, MacroAssembler::Call> |
| callOperation(OperationType operation, int result, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheckSetJSValueResult(operation, result); |
| } |
| |
| #if OS(WINDOWS) && CPU(X86_64) |
| template<typename OperationType, typename... Args> |
| std::enable_if_t<std::is_same<typename FunctionTraits<OperationType>::ResultType, SlowPathReturnType>::value, MacroAssembler::Call> |
| callOperation(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheckAndSlowPathReturnType(operation); |
| } |
| |
| template<typename Type> |
| static constexpr bool is64BitType() { return sizeof(Type) <= 8; } |
| |
| template<> |
| static constexpr bool is64BitType<void>() { return true; } |
| |
| template<typename OperationType, typename... Args> |
| std::enable_if_t<!std::is_same<typename FunctionTraits<OperationType>::ResultType, SlowPathReturnType>::value, MacroAssembler::Call> |
| callOperation(OperationType operation, Args... args) |
| { |
| static_assert(is64BitType<typename FunctionTraits<OperationType>::ResultType>(), "Win64 cannot use standard call when return type is larger than 64 bits."); |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheck(operation); |
| } |
| #else // OS(WINDOWS) && CPU(X86_64) |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperation(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheck(operation); |
| } |
| #endif // OS(WINDOWS) && CPU(X86_64) |
| |
| template<typename OperationType, typename... Args> |
| std::enable_if_t<FunctionTraits<OperationType>::hasResult, MacroAssembler::Call> |
| callOperationWithProfile(OperationType operation, int result, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, result); |
| } |
| |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperationWithResult(OperationType operation, JSValueRegs resultRegs, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| auto result = appendCallWithExceptionCheck(operation); |
| setupResults(resultRegs); |
| return result; |
| } |
| |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperationNoExceptionCheck(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| updateTopCallFrame(); |
| return appendCall(operation); |
| } |
| |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperationWithCallFrameRollbackOnException(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithCallFrameRollbackOnException(operation); |
| } |
| |
| template<typename SnippetGenerator> |
| void emitBitBinaryOpFastPath(Instruction* currentInstruction); |
| |
| void emitRightShiftFastPath(Instruction* currentInstruction, OpcodeID); |
| |
| Jump checkStructure(RegisterID reg, Structure* structure); |
| |
| void updateTopCallFrame(); |
| |
| Call emitNakedCall(CodePtr<NoPtrTag> function = CodePtr<NoPtrTag>()); |
| Call emitNakedTailCall(CodePtr<NoPtrTag> function = CodePtr<NoPtrTag>()); |
| |
| // 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 |
| |
| static bool reportCompileTimes(); |
| static bool computeCompileTimes(); |
| |
| // If you need to check the value of an instruction multiple times and the instruction is |
| // part of a LLInt inline cache, then you want to use this. It will give you the value of |
| // the instruction at the start of JITing. |
| Instruction* copiedInstruction(Instruction*); |
| |
| Interpreter* m_interpreter; |
| |
| PoisonedRefCountedArray<CodeBlockPoison, Instruction> m_instructions; |
| |
| Vector<CallRecord> m_calls; |
| Vector<Label> m_labels; |
| Vector<JITGetByIdGenerator> m_getByIds; |
| Vector<JITGetByIdWithThisGenerator> m_getByIdsWithThis; |
| Vector<JITPutByIdGenerator> m_putByIds; |
| Vector<ByValCompilationInfo> m_byValCompilationInfo; |
| Vector<CallCompilationInfo> m_callCompilationInfo; |
| Vector<JumpTable> m_jmpTable; |
| |
| unsigned m_bytecodeOffset; |
| Vector<SlowCaseEntry> m_slowCases; |
| Vector<SwitchRecord> m_switches; |
| |
| JumpList m_exceptionChecks; |
| JumpList m_exceptionChecksWithCallFrameRollback; |
| Label m_exceptionHandler; |
| |
| unsigned m_getByIdIndex; |
| unsigned m_getByIdWithThisIndex; |
| unsigned m_putByIdIndex; |
| unsigned m_byValInstructionIndex; |
| unsigned m_callLinkInfoIndex; |
| |
| Label m_arityCheck; |
| std::unique_ptr<LinkBuffer> m_linkBuffer; |
| |
| std::unique_ptr<JITDisassembler> m_disassembler; |
| RefPtr<Profiler::Compilation> m_compilation; |
| static CodeRef<JITThunkPtrTag> stringGetByValStubGenerator(VM*); |
| |
| PCToCodeOriginMapBuilder m_pcToCodeOriginMapBuilder; |
| |
| HashMap<Instruction*, void*> m_instructionToMathIC; |
| HashMap<Instruction*, MathICGenerationState> m_instructionToMathICGenerationState; |
| |
| bool m_canBeOptimized; |
| bool m_canBeOptimizedOrInlined; |
| bool m_shouldEmitProfiling; |
| bool m_shouldUseIndexMasking; |
| unsigned m_loopOSREntryBytecodeOffset { 0 }; |
| }; |
| |
| } // namespace JSC |
| |
| #endif // ENABLE(JIT) |
