| /* |
| * Copyright (C) 2008-2021 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_COMPATIBLE) |
| #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 "ByValInfo.h" |
| #include "CodeBlock.h" |
| #include "CommonSlowPaths.h" |
| #include "JITDisassembler.h" |
| #include "JITInlineCacheGenerator.h" |
| #include "JITMathIC.h" |
| #include "JITRightShiftGenerator.h" |
| #include "JSInterfaceJIT.h" |
| #include "PCToCodeOriginMap.h" |
| #include "UnusedPointer.h" |
| #include <wtf/UniqueRef.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 OpPutByVal; |
| struct OpPutByValDirect; |
| struct OpPutPrivateName; |
| struct OpPutToScope; |
| |
| template<PtrTag tag> |
| struct CallRecord { |
| MacroAssembler::Call from; |
| FunctionPtr<tag> callee; |
| |
| CallRecord() |
| { |
| } |
| |
| CallRecord(MacroAssembler::Call from, FunctionPtr<tag> callee) |
| : from(from) |
| , callee(callee) |
| { |
| } |
| }; |
| |
| using FarCallRecord = CallRecord<OperationPtrTag>; |
| using NearCallRecord = CallRecord<JSInternalPtrTag>; |
| |
| struct NearJumpRecord { |
| MacroAssembler::Jump from; |
| CodeLocationLabel<JITThunkPtrTag> target; |
| |
| NearJumpRecord() = default; |
| NearJumpRecord(MacroAssembler::Jump from, CodeLocationLabel<JITThunkPtrTag> target) |
| : from(from) |
| , target(target) |
| { } |
| }; |
| |
| struct JumpTable { |
| MacroAssembler::Jump from; |
| unsigned toBytecodeOffset; |
| |
| JumpTable(MacroAssembler::Jump f, unsigned t) |
| : from(f) |
| , toBytecodeOffset(t) |
| { |
| } |
| }; |
| |
| struct SlowCaseEntry { |
| MacroAssembler::Jump from; |
| BytecodeIndex to; |
| |
| SlowCaseEntry(MacroAssembler::Jump f, BytecodeIndex t) |
| : from(f) |
| , to(t) |
| { |
| } |
| }; |
| |
| struct SwitchRecord { |
| enum Type { |
| Immediate, |
| Character, |
| String |
| }; |
| |
| Type type; |
| |
| BytecodeIndex bytecodeIndex; |
| unsigned defaultOffset; |
| unsigned tableIndex; |
| |
| SwitchRecord(unsigned tableIndex, BytecodeIndex bytecodeIndex, unsigned defaultOffset, Type type) |
| : type(type) |
| , bytecodeIndex(bytecodeIndex) |
| , defaultOffset(defaultOffset) |
| , tableIndex(tableIndex) |
| { |
| } |
| }; |
| |
| struct ByValCompilationInfo { |
| ByValCompilationInfo() { } |
| |
| ByValCompilationInfo(ByValInfo* byValInfo, BytecodeIndex 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) |
| { |
| } |
| |
| ByValCompilationInfo(ByValInfo* byValInfo, BytecodeIndex bytecodeIndex, MacroAssembler::PatchableJump notIndexJump, MacroAssembler::Label doneTarget, MacroAssembler::Label nextHotPathTarget) |
| : byValInfo(byValInfo) |
| , bytecodeIndex(bytecodeIndex) |
| , notIndexJump(notIndexJump) |
| , doneTarget(doneTarget) |
| , nextHotPathTarget(nextHotPathTarget) |
| { |
| } |
| |
| ByValInfo* byValInfo; |
| BytecodeIndex 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::Label slowPathStart; |
| MacroAssembler::Label doneLocation; |
| CallLinkInfo* callLinkInfo; |
| }; |
| |
| void ctiPatchCallByReturnAddress(ReturnAddressPtr, FunctionPtr<CFunctionPtrTag> newCalleeFunction); |
| |
| class JIT_CLASS_ALIGNMENT JIT : private JSInterfaceJIT { |
| friend class JITSlowPathCall; |
| friend class JITStubCall; |
| friend class JITThunks; |
| |
| using MacroAssembler::Jump; |
| using MacroAssembler::JumpList; |
| using MacroAssembler::Label; |
| |
| static constexpr uintptr_t patchGetByIdDefaultStructure = unusedPointer; |
| static constexpr 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 constexpr int patchPutByIdDefaultOffset = 256; |
| |
| public: |
| JIT(VM&, CodeBlock* = nullptr, BytecodeIndex loopOSREntryBytecodeOffset = BytecodeIndex(0)); |
| ~JIT(); |
| |
| VM& vm() { return *JSInterfaceJIT::vm(); } |
| |
| void compileAndLinkWithoutFinalizing(JITCompilationEffort); |
| CompilationResult finalizeOnMainThread(); |
| size_t codeSize() const; |
| |
| void doMainThreadPreparationBeforeCompile(); |
| |
| static CompilationResult compile(VM& vm, CodeBlock* codeBlock, JITCompilationEffort effort, BytecodeIndex bytecodeOffset = BytecodeIndex(0)) |
| { |
| return JIT(vm, codeBlock, bytecodeOffset).privateCompile(effort); |
| } |
| |
| static void compilePutByVal(const ConcurrentJSLocker& locker, VM& vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeIndex = byValInfo->bytecodeIndex; |
| jit.privateCompilePutByVal<OpPutByVal>(locker, byValInfo, returnAddress, arrayMode); |
| } |
| |
| static void compileDirectPutByVal(const ConcurrentJSLocker& locker, VM& vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeIndex = byValInfo->bytecodeIndex; |
| jit.privateCompilePutByVal<OpPutByValDirect>(locker, byValInfo, returnAddress, arrayMode); |
| } |
| |
| template<typename Op> |
| static void compilePutByValWithCachedId(VM& vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, PutKind putKind, CacheableIdentifier propertyName) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeIndex = byValInfo->bytecodeIndex; |
| jit.privateCompilePutByValWithCachedId<Op>(byValInfo, returnAddress, putKind, propertyName); |
| } |
| |
| static void compilePutPrivateNameWithCachedId(VM& vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, CacheableIdentifier propertyName) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeIndex = byValInfo->bytecodeIndex; |
| jit.privateCompilePutPrivateNameWithCachedId(byValInfo, returnAddress, propertyName); |
| } |
| |
| static void compileHasIndexedProperty(VM& vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) |
| { |
| JIT jit(vm, codeBlock); |
| jit.m_bytecodeIndex = byValInfo->bytecodeIndex; |
| jit.privateCompileHasIndexedProperty(byValInfo, returnAddress, arrayMode); |
| } |
| |
| static unsigned frameRegisterCountFor(CodeBlock*); |
| static int stackPointerOffsetFor(CodeBlock*); |
| |
| JS_EXPORT_PRIVATE static HashMap<CString, Seconds> compileTimeStats(); |
| JS_EXPORT_PRIVATE static Seconds totalCompileTime(); |
| |
| private: |
| void privateCompileMainPass(); |
| void privateCompileLinkPass(); |
| void privateCompileSlowCases(); |
| void link(); |
| CompilationResult privateCompile(JITCompilationEffort); |
| |
| void privateCompileGetByVal(const ConcurrentJSLocker&, ByValInfo*, ReturnAddressPtr, JITArrayMode); |
| template<typename Op> |
| void privateCompilePutByVal(const ConcurrentJSLocker&, ByValInfo*, ReturnAddressPtr, JITArrayMode); |
| template<typename Op> |
| void privateCompilePutByValWithCachedId(ByValInfo*, ReturnAddressPtr, PutKind, CacheableIdentifier); |
| |
| void privateCompilePutPrivateNameWithCachedId(ByValInfo*, ReturnAddressPtr, CacheableIdentifier); |
| |
| 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_farCalls.append(FarCallRecord(functionCall, function.retagged<OperationPtrTag>())); |
| return functionCall; |
| } |
| |
| void appendCall(Address function) |
| { |
| call(function, OperationPtrTag); |
| } |
| |
| #if OS(WINDOWS) && CPU(X86_64) |
| Call appendCallWithSlowPathReturnType(const FunctionPtr<CFunctionPtrTag> function) |
| { |
| Call functionCall = callWithSlowPathReturnType(OperationPtrTag); |
| m_farCalls.append(FarCallRecord(functionCall, 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 advanceToNextCheckpoint(); |
| void emitJumpSlowToHotForCheckpoint(Jump); |
| |
| void addSlowCase(Jump); |
| void addSlowCase(const JumpList&); |
| void addSlowCase(); |
| void addJump(Jump, int); |
| void addJump(const JumpList&, int); |
| void emitJumpSlowToHot(Jump, int); |
| |
| template<typename Op> |
| void compileOpCall(const Instruction*, unsigned callLinkInfoIndex); |
| template<typename Op> |
| void compileOpCallSlowCase(const Instruction*, Vector<SlowCaseEntry>::iterator&, unsigned callLinkInfoIndex); |
| template<typename Op> |
| std::enable_if_t< |
| Op::opcodeID != op_call_varargs && Op::opcodeID != op_construct_varargs |
| && Op::opcodeID != op_tail_call_varargs && Op::opcodeID != op_tail_call_forward_arguments |
| , void> compileSetupFrame(const Op&, CallLinkInfo*); |
| |
| template<typename Op> |
| std::enable_if_t< |
| Op::opcodeID == op_call_varargs || Op::opcodeID == op_construct_varargs |
| || Op::opcodeID == op_tail_call_varargs || Op::opcodeID == op_tail_call_forward_arguments |
| , void> compileSetupFrame(const Op&, CallLinkInfo*); |
| |
| template<typename Op> |
| bool compileTailCall(const Op&, CallLinkInfo*, unsigned callLinkInfoIndex); |
| template<typename Op> |
| bool compileCallEval(const Op&); |
| void compileCallEvalSlowCase(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| template<typename Op> |
| void emitPutCallResult(const Op&); |
| |
| template<typename Op> void compileOpStrictEq(const Instruction*); |
| template<typename Op> void compileOpStrictEqJump(const Instruction*); |
| enum class CompileOpEqType { Eq, NEq }; |
| void compileOpEqJumpSlow(Vector<SlowCaseEntry>::iterator&, CompileOpEqType, int jumpTarget); |
| bool isOperandConstantDouble(VirtualRegister); |
| |
| 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(VirtualRegister owner, WriteBarrierMode); |
| void emitWriteBarrier(VirtualRegister owner, VirtualRegister value, WriteBarrierMode); |
| void emitWriteBarrier(JSCell* owner, VirtualRegister value, WriteBarrierMode); |
| void emitWriteBarrier(JSCell* owner); |
| |
| // This assumes that the value to profile is in regT0 and that regT3 is available for |
| // scratch. |
| #if USE(JSVALUE64) |
| void emitValueProfilingSite(ValueProfile&, GPRReg); |
| void emitValueProfilingSite(ValueProfile&, JSValueRegs); |
| template<typename Metadata> void emitValueProfilingSite(Metadata&, GPRReg); |
| template<typename Metadata> void emitValueProfilingSite(Metadata&, JSValueRegs); |
| #else |
| void emitValueProfilingSite(ValueProfile&, JSValueRegs); |
| template<typename Metadata> void emitValueProfilingSite(Metadata&, JSValueRegs); |
| #endif |
| |
| void emitValueProfilingSiteIfProfiledOpcode(...); |
| template<typename Op> |
| std::enable_if_t<std::is_same<decltype(Op::Metadata::m_profile), ValueProfile>::value, void> |
| emitValueProfilingSiteIfProfiledOpcode(Op bytecode); |
| |
| void emitArrayProfilingSiteWithCell(RegisterID cell, RegisterID indexingType, ArrayProfile*); |
| 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(const Instruction* instruction, PatchableJump& badType, ByValInfo* byValInfo) { return emitContiguousLoad(instruction, badType, byValInfo, Int32Shape); } |
| JumpList emitDoubleLoad(const Instruction*, PatchableJump& badType, ByValInfo*); |
| JumpList emitContiguousLoad(const Instruction*, PatchableJump& badType, ByValInfo*, IndexingType expectedShape = ContiguousShape); |
| JumpList emitArrayStorageLoad(const Instruction*, PatchableJump& badType, ByValInfo*); |
| JumpList emitLoadForArrayMode(const Instruction*, JITArrayMode, PatchableJump& badType, ByValInfo*); |
| |
| // 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. |
| template<typename Op> |
| JumpList emitInt32PutByVal(Op bytecode, PatchableJump& badType, ByValInfo* byValInfo) |
| { |
| return emitGenericContiguousPutByVal(bytecode, badType, byValInfo, Int32Shape); |
| } |
| template<typename Op> |
| JumpList emitDoublePutByVal(Op bytecode, PatchableJump& badType, ByValInfo* byValInfo) |
| { |
| return emitGenericContiguousPutByVal(bytecode, badType, byValInfo, DoubleShape); |
| } |
| template<typename Op> |
| JumpList emitContiguousPutByVal(Op bytecode, PatchableJump& badType, ByValInfo* byValInfo) |
| { |
| return emitGenericContiguousPutByVal(bytecode, badType, byValInfo); |
| } |
| template<typename Op> |
| JumpList emitGenericContiguousPutByVal(Op, PatchableJump& badType, ByValInfo*, IndexingType indexingShape = ContiguousShape); |
| template<typename Op> |
| JumpList emitArrayStoragePutByVal(Op, PatchableJump& badType, ByValInfo*); |
| template<typename Op> |
| JumpList emitIntTypedArrayPutByVal(Op, PatchableJump& badType, ByValInfo*, TypedArrayType); |
| template<typename Op> |
| JumpList emitFloatTypedArrayPutByVal(Op, PatchableJump& badType, ByValInfo*, TypedArrayType); |
| |
| template<typename Op> |
| ECMAMode ecmaMode(Op); |
| |
| // Determines the type of private field access for a bytecode. |
| template<typename Op> |
| PrivateFieldPutKind privateFieldPutKind(Op); |
| |
| // Identifier check helper for GetByVal and PutByVal. |
| void emitByValIdentifierCheck(RegisterID cell, RegisterID scratch, CacheableIdentifier, JumpList& slowCases); |
| |
| JITPutByIdGenerator emitPutPrivateNameWithCachedId(OpPutPrivateName, CacheableIdentifier, JumpList& doneCases, JumpList& slowCases); |
| |
| template<typename Op> |
| JITPutByIdGenerator emitPutByValWithCachedId(Op, PutKind, CacheableIdentifier, JumpList& doneCases, JumpList& slowCases); |
| |
| enum FinalObjectMode { MayBeFinal, KnownNotFinal }; |
| |
| void emitGetVirtualRegister(VirtualRegister src, JSValueRegs dst); |
| void emitPutVirtualRegister(VirtualRegister dst, JSValueRegs src); |
| |
| int32_t getOperandConstantInt(VirtualRegister src); |
| double getOperandConstantDouble(VirtualRegister src); |
| |
| #if USE(JSVALUE32_64) |
| bool getOperandConstantInt(VirtualRegister op1, VirtualRegister op2, VirtualRegister& op, int32_t& constant); |
| |
| void emitLoadDouble(VirtualRegister, FPRegisterID value); |
| void emitLoadTag(VirtualRegister, RegisterID tag); |
| void emitLoadPayload(VirtualRegister, RegisterID payload); |
| |
| void emitLoad(const JSValue& v, RegisterID tag, RegisterID payload); |
| void emitLoad(VirtualRegister, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); |
| void emitLoad2(VirtualRegister, RegisterID tag1, RegisterID payload1, VirtualRegister, RegisterID tag2, RegisterID payload2); |
| |
| void emitStore(VirtualRegister, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); |
| void emitStore(VirtualRegister, const JSValue constant, RegisterID base = callFrameRegister); |
| void emitStoreInt32(VirtualRegister, RegisterID payload, bool indexIsInt32 = false); |
| void emitStoreInt32(VirtualRegister, TrustedImm32 payload, bool indexIsInt32 = false); |
| void emitStoreCell(VirtualRegister, RegisterID payload, bool indexIsCell = false); |
| void emitStoreBool(VirtualRegister, RegisterID payload, bool indexIsBool = false); |
| void emitStoreDouble(VirtualRegister, FPRegisterID value); |
| |
| void emitJumpSlowCaseIfNotJSCell(VirtualRegister); |
| void emitJumpSlowCaseIfNotJSCell(VirtualRegister, RegisterID tag); |
| void emitJumpSlowCaseIfNotJSCell(RegisterID); |
| |
| void compileGetByIdHotPath(const Identifier*); |
| |
| // Arithmetic opcode helpers |
| template <typename Op> |
| void emitBinaryDoubleOp(const Instruction *, OperandTypes, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters = true, bool op2IsInRegisters = true); |
| |
| #else // USE(JSVALUE32_64) |
| void emitGetVirtualRegister(VirtualRegister src, RegisterID dst); |
| void emitGetVirtualRegisters(VirtualRegister src1, RegisterID dst1, VirtualRegister src2, RegisterID dst2); |
| void emitPutVirtualRegister(VirtualRegister dst, RegisterID from = regT0); |
| void emitStoreCell(VirtualRegister dst, RegisterID payload, bool /* only used in JSValue32_64 */ = false) |
| { |
| emitPutVirtualRegister(dst, payload); |
| } |
| |
| Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID); |
| void emitJumpSlowCaseIfJSCell(RegisterID); |
| void emitJumpSlowCaseIfNotJSCell(RegisterID); |
| void emitJumpSlowCaseIfNotJSCell(RegisterID, VirtualRegister); |
| Jump emitJumpIfNotInt(RegisterID, RegisterID, RegisterID scratch); |
| PatchableJump emitPatchableJumpIfNotInt(RegisterID); |
| void emitJumpSlowCaseIfNotInt(RegisterID); |
| void emitJumpSlowCaseIfNotNumber(RegisterID); |
| void emitJumpSlowCaseIfNotInt(RegisterID, RegisterID, RegisterID scratch); |
| |
| void compileGetByIdHotPath(VirtualRegister baseReg, const Identifier*); |
| |
| #endif // USE(JSVALUE32_64) |
| |
| template<typename Op> |
| void emit_compareAndJump(const Instruction*, RelationalCondition); |
| void emit_compareAndJumpImpl(VirtualRegister op1, VirtualRegister op2, unsigned target, RelationalCondition); |
| template<typename Op> |
| void emit_compareUnsigned(const Instruction*, RelationalCondition); |
| void emit_compareUnsignedImpl(VirtualRegister dst, VirtualRegister op1, VirtualRegister op2, RelationalCondition); |
| template<typename Op> |
| void emit_compareUnsignedAndJump(const Instruction*, RelationalCondition); |
| void emit_compareUnsignedAndJumpImpl(VirtualRegister op1, VirtualRegister op2, unsigned target, RelationalCondition); |
| template<typename Op, typename SlowOperation> |
| void emit_compareAndJumpSlow(const Instruction*, DoubleCondition, SlowOperation, bool invert, Vector<SlowCaseEntry>::iterator&); |
| template<typename SlowOperation> |
| void emit_compareAndJumpSlowImpl(VirtualRegister op1, VirtualRegister op2, unsigned target, size_t instructionSize, DoubleCondition, SlowOperation, bool invert, Vector<SlowCaseEntry>::iterator&); |
| |
| void assertStackPointerOffset(); |
| |
| void emit_op_add(const Instruction*); |
| void emit_op_bitand(const Instruction*); |
| void emit_op_bitor(const Instruction*); |
| void emit_op_bitxor(const Instruction*); |
| void emit_op_bitnot(const Instruction*); |
| void emit_op_call(const Instruction*); |
| void emit_op_tail_call(const Instruction*); |
| void emit_op_call_eval(const Instruction*); |
| void emit_op_call_varargs(const Instruction*); |
| void emit_op_tail_call_varargs(const Instruction*); |
| void emit_op_tail_call_forward_arguments(const Instruction*); |
| void emit_op_construct_varargs(const Instruction*); |
| void emit_op_catch(const Instruction*); |
| void emit_op_construct(const Instruction*); |
| void emit_op_create_this(const Instruction*); |
| void emit_op_to_this(const Instruction*); |
| void emit_op_get_argument(const Instruction*); |
| void emit_op_argument_count(const Instruction*); |
| void emit_op_get_rest_length(const Instruction*); |
| void emit_op_check_tdz(const Instruction*); |
| void emit_op_identity_with_profile(const Instruction*); |
| void emit_op_debug(const Instruction*); |
| void emit_op_del_by_id(const Instruction*); |
| void emitSlow_op_del_by_id(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emit_op_del_by_val(const Instruction*); |
| void emitSlow_op_del_by_val(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emit_op_div(const Instruction*); |
| void emit_op_end(const Instruction*); |
| void emit_op_enter(const Instruction*); |
| void emit_op_get_scope(const Instruction*); |
| void emit_op_eq(const Instruction*); |
| void emit_op_eq_null(const Instruction*); |
| void emit_op_below(const Instruction*); |
| void emit_op_beloweq(const Instruction*); |
| void emit_op_try_get_by_id(const Instruction*); |
| void emit_op_get_by_id(const Instruction*); |
| void emit_op_get_by_id_with_this(const Instruction*); |
| void emit_op_get_by_id_direct(const Instruction*); |
| void emit_op_get_by_val(const Instruction*); |
| void emit_op_get_private_name(const Instruction*); |
| void emit_op_set_private_brand(const Instruction*); |
| void emit_op_check_private_brand(const Instruction*); |
| void emit_op_get_argument_by_val(const Instruction*); |
| void emit_op_get_prototype_of(const Instruction*); |
| void emit_op_in_by_id(const Instruction*); |
| void emit_op_in_by_val(const Instruction*); |
| void emit_op_has_private_name(const Instruction*); |
| void emit_op_has_private_brand(const Instruction*); |
| void emit_op_init_lazy_reg(const Instruction*); |
| void emit_op_overrides_has_instance(const Instruction*); |
| void emit_op_instanceof(const Instruction*); |
| void emit_op_instanceof_custom(const Instruction*); |
| void emit_op_is_empty(const Instruction*); |
| void emit_op_typeof_is_undefined(const Instruction*); |
| void emit_op_is_undefined_or_null(const Instruction*); |
| void emit_op_is_boolean(const Instruction*); |
| void emit_op_is_number(const Instruction*); |
| #if USE(BIGINT32) |
| void emit_op_is_big_int(const Instruction*); |
| #else |
| NO_RETURN void emit_op_is_big_int(const Instruction*); |
| #endif |
| void emit_op_is_object(const Instruction*); |
| void emit_op_is_cell_with_type(const Instruction*); |
| void emit_op_jeq_null(const Instruction*); |
| void emit_op_jfalse(const Instruction*); |
| void emit_op_jmp(const Instruction*); |
| void emit_op_jneq_null(const Instruction*); |
| void emit_op_jundefined_or_null(const Instruction*); |
| void emit_op_jnundefined_or_null(const Instruction*); |
| void emit_op_jneq_ptr(const Instruction*); |
| void emit_op_jless(const Instruction*); |
| void emit_op_jlesseq(const Instruction*); |
| void emit_op_jgreater(const Instruction*); |
| void emit_op_jgreatereq(const Instruction*); |
| void emit_op_jnless(const Instruction*); |
| void emit_op_jnlesseq(const Instruction*); |
| void emit_op_jngreater(const Instruction*); |
| void emit_op_jngreatereq(const Instruction*); |
| void emit_op_jeq(const Instruction*); |
| void emit_op_jneq(const Instruction*); |
| void emit_op_jstricteq(const Instruction*); |
| void emit_op_jnstricteq(const Instruction*); |
| void emit_op_jbelow(const Instruction*); |
| void emit_op_jbeloweq(const Instruction*); |
| void emit_op_jtrue(const Instruction*); |
| void emit_op_loop_hint(const Instruction*); |
| void emit_op_check_traps(const Instruction*); |
| void emit_op_nop(const Instruction*); |
| void emit_op_super_sampler_begin(const Instruction*); |
| void emit_op_super_sampler_end(const Instruction*); |
| void emit_op_lshift(const Instruction*); |
| void emit_op_mod(const Instruction*); |
| void emit_op_mov(const Instruction*); |
| void emit_op_mul(const Instruction*); |
| void emit_op_negate(const Instruction*); |
| void emit_op_neq(const Instruction*); |
| void emit_op_neq_null(const Instruction*); |
| void emit_op_new_array(const Instruction*); |
| void emit_op_new_array_with_size(const Instruction*); |
| void emit_op_new_func(const Instruction*); |
| void emit_op_new_func_exp(const Instruction*); |
| void emit_op_new_generator_func(const Instruction*); |
| void emit_op_new_generator_func_exp(const Instruction*); |
| void emit_op_new_async_func(const Instruction*); |
| void emit_op_new_async_func_exp(const Instruction*); |
| void emit_op_new_async_generator_func(const Instruction*); |
| void emit_op_new_async_generator_func_exp(const Instruction*); |
| void emit_op_new_object(const Instruction*); |
| void emit_op_new_regexp(const Instruction*); |
| void emit_op_not(const Instruction*); |
| void emit_op_nstricteq(const Instruction*); |
| void emit_op_dec(const Instruction*); |
| void emit_op_inc(const Instruction*); |
| void emit_op_profile_type(const Instruction*); |
| void emit_op_profile_control_flow(const Instruction*); |
| void emit_op_get_parent_scope(const Instruction*); |
| void emit_op_put_by_id(const Instruction*); |
| template<typename Op = OpPutByVal> |
| void emit_op_put_by_val(const Instruction*); |
| void emit_op_put_by_val_direct(const Instruction*); |
| void emit_op_put_private_name(const Instruction*); |
| void emit_op_put_getter_by_id(const Instruction*); |
| void emit_op_put_setter_by_id(const Instruction*); |
| void emit_op_put_getter_setter_by_id(const Instruction*); |
| void emit_op_put_getter_by_val(const Instruction*); |
| void emit_op_put_setter_by_val(const Instruction*); |
| void emit_op_ret(const Instruction*); |
| void emit_op_rshift(const Instruction*); |
| void emit_op_set_function_name(const Instruction*); |
| void emit_op_stricteq(const Instruction*); |
| void emit_op_sub(const Instruction*); |
| void emit_op_switch_char(const Instruction*); |
| void emit_op_switch_imm(const Instruction*); |
| void emit_op_switch_string(const Instruction*); |
| void emit_op_tear_off_arguments(const Instruction*); |
| void emit_op_throw(const Instruction*); |
| void emit_op_to_number(const Instruction*); |
| void emit_op_to_numeric(const Instruction*); |
| void emit_op_to_string(const Instruction*); |
| void emit_op_to_object(const Instruction*); |
| void emit_op_to_primitive(const Instruction*); |
| void emit_op_unexpected_load(const Instruction*); |
| void emit_op_unsigned(const Instruction*); |
| void emit_op_urshift(const Instruction*); |
| template <typename OpCodeType> |
| void emit_op_has_structure_propertyImpl(const Instruction*); |
| void emit_op_has_enumerable_indexed_property(const Instruction*); |
| void emit_op_has_enumerable_structure_property(const Instruction*); |
| void emit_op_has_own_structure_property(const Instruction*); |
| void emit_op_in_structure_property(const Instruction*); |
| void emit_op_get_direct_pname(const Instruction*); |
| void emit_op_enumerator_structure_pname(const Instruction*); |
| void emit_op_enumerator_generic_pname(const Instruction*); |
| void emit_op_get_internal_field(const Instruction*); |
| void emit_op_put_internal_field(const Instruction*); |
| void emit_op_log_shadow_chicken_prologue(const Instruction*); |
| void emit_op_log_shadow_chicken_tail(const Instruction*); |
| void emit_op_to_property_key(const Instruction*); |
| |
| void emitSlow_op_add(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_tail_call(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call_eval(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call_varargs(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_tail_call_varargs(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_tail_call_forward_arguments(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_construct_varargs(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_construct(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_eq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_callee(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_try_get_by_id(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id_with_this(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id_direct(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_val(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_private_name(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_set_private_brand(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_check_private_brand(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_argument_by_val(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_in_by_id(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_in_by_val(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_has_private_name(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_has_private_brand(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_instanceof(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_instanceof_custom(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jless(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jlesseq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jgreater(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jgreatereq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jnless(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jnlesseq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jngreater(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jngreatereq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jeq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jneq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jstricteq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jnstricteq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jtrue(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_loop_hint(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_check_traps(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_mod(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_mul(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_negate(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_neq(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_new_object(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_by_id(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_by_val(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_private_name(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_sub(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_has_enumerable_indexed_property(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| |
| void emit_op_resolve_scope(const Instruction*); |
| void emit_op_get_from_scope(const Instruction*); |
| void emit_op_put_to_scope(const Instruction*); |
| void emit_op_get_from_arguments(const Instruction*); |
| void emit_op_put_to_arguments(const Instruction*); |
| #if !ENABLE(EXTRA_CTI_THUNKS) |
| void emitSlow_op_get_from_scope(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| #endif |
| void emitSlow_op_put_to_scope(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| |
| void emitSlowCaseCall(const Instruction*, Vector<SlowCaseEntry>::iterator&, SlowPathFunction); |
| |
| void emit_op_iterator_open(const Instruction*); |
| void emitSlow_op_iterator_open(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emit_op_iterator_next(const Instruction*); |
| void emitSlow_op_iterator_next(const Instruction*, Vector<SlowCaseEntry>::iterator&); |
| |
| void emitRightShift(const Instruction*, bool isUnsigned); |
| void emitRightShiftSlowCase(const Instruction*, Vector<SlowCaseEntry>::iterator&, bool isUnsigned); |
| |
| void emitHasPrivate(VirtualRegister dst, VirtualRegister base, VirtualRegister propertyOrBrand, AccessType); |
| void emitHasPrivateSlow(VirtualRegister dst, AccessType); |
| |
| template<typename Op> |
| void emitNewFuncCommon(const Instruction*); |
| template<typename Op> |
| void emitNewFuncExprCommon(const Instruction*); |
| void emitVarInjectionCheck(bool needsVarInjectionChecks); |
| void emitVarReadOnlyCheck(ResolveType); |
| void emitResolveClosure(VirtualRegister dst, VirtualRegister scope, bool needsVarInjectionChecks, unsigned depth); |
| void emitLoadWithStructureCheck(VirtualRegister 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(VirtualRegister scope, uintptr_t operand); |
| void emitNotifyWrite(WatchpointSet*); |
| void emitNotifyWrite(GPRReg pointerToSet); |
| void emitPutGlobalVariable(JSValue* operand, VirtualRegister value, WatchpointSet*); |
| void emitPutGlobalVariableIndirect(JSValue** addressOfOperand, VirtualRegister value, WatchpointSet**); |
| void emitPutClosureVar(VirtualRegister scope, uintptr_t operand, VirtualRegister value, WatchpointSet*); |
| |
| void emitInitRegister(VirtualRegister); |
| |
| void emitPutIntToCallFrameHeader(RegisterID from, VirtualRegister); |
| |
| JSValue getConstantOperand(VirtualRegister); |
| bool isOperandConstantInt(VirtualRegister); |
| bool isOperandConstantChar(VirtualRegister); |
| |
| template <typename Op, typename Generator, typename ProfiledFunction, typename NonProfiledFunction> |
| void emitMathICFast(JITUnaryMathIC<Generator>*, const Instruction*, ProfiledFunction, NonProfiledFunction); |
| template <typename Op, typename Generator, typename ProfiledFunction, typename NonProfiledFunction> |
| void emitMathICFast(JITBinaryMathIC<Generator>*, const Instruction*, ProfiledFunction, NonProfiledFunction); |
| |
| template <typename Op, typename Generator, typename ProfiledRepatchFunction, typename ProfiledFunction, typename RepatchFunction> |
| void emitMathICSlow(JITBinaryMathIC<Generator>*, const Instruction*, ProfiledRepatchFunction, ProfiledFunction, RepatchFunction); |
| template <typename Op, typename Generator, typename ProfiledRepatchFunction, typename ProfiledFunction, typename RepatchFunction> |
| void emitMathICSlow(JITUnaryMathIC<Generator>*, const Instruction*, ProfiledRepatchFunction, ProfiledFunction, RepatchFunction); |
| |
| #if ENABLE(EXTRA_CTI_THUNKS) |
| // Thunk generators. |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_del_by_id_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_del_by_val_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_get_by_id_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_get_by_id_with_this_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_get_by_val_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_get_from_scopeGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_get_private_name_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_put_by_id_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_put_by_val_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_put_private_name_prepareCallGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_put_to_scopeGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> slow_op_resolve_scopeGenerator(VM&); |
| |
| static MacroAssemblerCodeRef<JITThunkPtrTag> op_check_traps_handlerGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> op_enter_handlerGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> op_ret_handlerGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> op_throw_handlerGenerator(VM&); |
| |
| static constexpr bool thunkIsUsedForOpGetFromScope(ResolveType resolveType) |
| { |
| // GlobalVar because it is more efficient to emit inline than use a thunk. |
| // ResolvedClosureVar and ModuleVar because we don't use these types with op_get_from_scope. |
| return !(resolveType == GlobalVar || resolveType == ResolvedClosureVar || resolveType == ModuleVar); |
| } |
| |
| #define DECLARE_GET_FROM_SCOPE_GENERATOR(resolveType) \ |
| static MacroAssemblerCodeRef<JITThunkPtrTag> op_get_from_scope_##resolveType##Generator(VM&); |
| FOR_EACH_RESOLVE_TYPE(DECLARE_GET_FROM_SCOPE_GENERATOR) |
| #undef DECLARE_GET_FROM_SCOPE_GENERATOR |
| |
| MacroAssemblerCodeRef<JITThunkPtrTag> generateOpGetFromScopeThunk(ResolveType, const char* thunkName); |
| |
| static constexpr bool thunkIsUsedForOpResolveScope(ResolveType resolveType) |
| { |
| // ModuleVar because it is more efficient to emit inline than use a thunk. |
| // ResolvedClosureVar because we don't use these types with op_resolve_scope. |
| return !(resolveType == ResolvedClosureVar || resolveType == ModuleVar); |
| } |
| |
| #define DECLARE_RESOLVE_SCOPE_GENERATOR(resolveType) \ |
| static MacroAssemblerCodeRef<JITThunkPtrTag> op_resolve_scope_##resolveType##Generator(VM&); |
| FOR_EACH_RESOLVE_TYPE(DECLARE_RESOLVE_SCOPE_GENERATOR) |
| #undef DECLARE_RESOLVE_SCOPE_GENERATOR |
| |
| MacroAssemblerCodeRef<JITThunkPtrTag> generateOpResolveScopeThunk(ResolveType, const char* thunkName); |
| |
| static MacroAssemblerCodeRef<JITThunkPtrTag> valueIsFalseyGenerator(VM&); |
| static MacroAssemblerCodeRef<JITThunkPtrTag> valueIsTruthyGenerator(VM&); |
| |
| #endif // ENABLE(EXTRA_CTI_THUNKS) |
| |
| 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&, VirtualRegister); |
| void linkAllSlowCasesForBytecodeIndex(Vector<SlowCaseEntry>& slowCases, |
| Vector<SlowCaseEntry>::iterator&, BytecodeIndex bytecodeOffset); |
| |
| void linkAllSlowCases(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| linkAllSlowCasesForBytecodeIndex(m_slowCases, iter, m_bytecodeIndex); |
| } |
| |
| bool hasAnySlowCases(Vector<SlowCaseEntry>& slowCases, Vector<SlowCaseEntry>::iterator&, BytecodeIndex bytecodeOffset); |
| bool hasAnySlowCases(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| return hasAnySlowCases(m_slowCases, iter, m_bytecodeIndex); |
| } |
| |
| MacroAssembler::Call appendCallWithExceptionCheck(const FunctionPtr<CFunctionPtrTag>); |
| void appendCallWithExceptionCheck(Address); |
| #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>, VirtualRegister result); |
| void appendCallWithExceptionCheckSetJSValueResult(Address, VirtualRegister result); |
| template<typename Metadata> |
| MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResultWithProfile(Metadata&, const FunctionPtr<CFunctionPtrTag>, VirtualRegister result); |
| template<typename Metadata> |
| void appendCallWithExceptionCheckSetJSValueResultWithProfile(Metadata&, Address, VirtualRegister result); |
| |
| template<typename OperationType, typename... Args> |
| std::enable_if_t<FunctionTraits<OperationType>::hasResult, MacroAssembler::Call> |
| callOperation(OperationType operation, VirtualRegister result, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheckSetJSValueResult(operation, result); |
| } |
| |
| template<typename OperationType, typename... Args> |
| std::enable_if_t<FunctionTraits<OperationType>::hasResult, void> |
| callOperation(Address target, VirtualRegister result, Args... args) |
| { |
| setupArgumentsForIndirectCall<OperationType>(target, args...); |
| return appendCallWithExceptionCheckSetJSValueResult(Address(GPRInfo::nonArgGPR0, target.offset), result); |
| } |
| |
| #if OS(WINDOWS) && CPU(X86_64) |
| template<typename Type> |
| struct is64BitType { |
| static constexpr bool value = sizeof(Type) <= 8; |
| }; |
| |
| template<> |
| struct is64BitType<void> { |
| static constexpr bool value = true; |
| }; |
| |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperation(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| // x64 Windows cannot use standard call when the return type is larger than 64 bits. |
| if constexpr (is64BitType<typename FunctionTraits<OperationType>::ResultType>::value) |
| return appendCallWithExceptionCheck(operation); |
| return appendCallWithExceptionCheckAndSlowPathReturnType(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> |
| void callOperation(Address target, Args... args) |
| { |
| #if OS(WINDOWS) && CPU(X86_64) |
| // x64 Windows cannot use standard call when the return type is larger than 64 bits. |
| static_assert(is64BitType<typename FunctionTraits<OperationType>::ResultType>::value); |
| #endif |
| setupArgumentsForIndirectCall<OperationType>(target, args...); |
| appendCallWithExceptionCheck(Address(GPRInfo::nonArgGPR0, target.offset)); |
| } |
| |
| template<typename Metadata, typename OperationType, typename... Args> |
| std::enable_if_t<FunctionTraits<OperationType>::hasResult, MacroAssembler::Call> |
| callOperationWithProfile(Metadata& metadata, OperationType operation, VirtualRegister result, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithExceptionCheckSetJSValueResultWithProfile(metadata, operation, result); |
| } |
| |
| template<typename OperationType, typename Metadata, typename... Args> |
| std::enable_if_t<FunctionTraits<OperationType>::hasResult, void> |
| callOperationWithProfile(Metadata& metadata, Address target, VirtualRegister result, Args... args) |
| { |
| setupArgumentsForIndirectCall<OperationType>(target, args...); |
| return appendCallWithExceptionCheckSetJSValueResultWithProfile(metadata, Address(GPRInfo::nonArgGPR0, target.offset), 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; |
| } |
| |
| #if OS(WINDOWS) && CPU(X86_64) |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperationNoExceptionCheck(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| updateTopCallFrame(); |
| // x64 Windows cannot use standard call when the return type is larger than 64 bits. |
| if constexpr (is64BitType<typename FunctionTraits<OperationType>::ResultType>::value) |
| return appendCall(operation); |
| return appendCallWithSlowPathReturnType(operation); |
| } |
| #else // OS(WINDOWS) && CPU(X86_64) |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperationNoExceptionCheck(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| updateTopCallFrame(); |
| return appendCall(operation); |
| } |
| #endif // OS(WINDOWS) && CPU(X86_64) |
| |
| template<typename OperationType, typename... Args> |
| MacroAssembler::Call callOperationWithCallFrameRollbackOnException(OperationType operation, Args... args) |
| { |
| setupArguments<OperationType>(args...); |
| return appendCallWithCallFrameRollbackOnException(operation); |
| } |
| |
| enum class ProfilingPolicy { |
| ShouldEmitProfiling, |
| NoProfiling |
| }; |
| |
| template<typename Op, typename SnippetGenerator> |
| void emitBitBinaryOpFastPath(const Instruction* currentInstruction, ProfilingPolicy shouldEmitProfiling = ProfilingPolicy::NoProfiling); |
| |
| void emitRightShiftFastPath(const Instruction* currentInstruction, OpcodeID); |
| |
| template<typename Op> |
| void emitRightShiftFastPath(const Instruction* currentInstruction, JITRightShiftGenerator::ShiftType); |
| |
| void updateTopCallFrame(); |
| |
| Call emitNakedNearCall(CodePtr<NoPtrTag> function = { }); |
| Call emitNakedNearTailCall(CodePtr<NoPtrTag> function = { }); |
| Jump emitNakedNearJump(CodePtr<JITThunkPtrTag> function = { }); |
| |
| // Loads the character value of a single character string into dst. |
| void emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures); |
| |
| int jumpTarget(const Instruction*, int target); |
| |
| #if ENABLE(DFG_JIT) |
| void emitEnterOptimizationCheck(); |
| #else |
| void emitEnterOptimizationCheck() { } |
| #endif |
| |
| #ifndef NDEBUG |
| void printBytecodeOperandTypes(VirtualRegister src1, VirtualRegister 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(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 a value from the metadata table and you need it to |
| // be consistent across the fast and slow path, then you want to use this. |
| // It will give the slow path the same value read by the fast path. |
| GetPutInfo copiedGetPutInfo(OpPutToScope); |
| template<typename BinaryOp> |
| BinaryArithProfile copiedArithProfile(BinaryOp); |
| |
| Interpreter* m_interpreter; |
| |
| Vector<FarCallRecord> m_farCalls; |
| Vector<NearCallRecord> m_nearCalls; |
| Vector<NearJumpRecord> m_nearJumps; |
| Vector<Label> m_labels; |
| HashMap<BytecodeIndex, Label> m_checkpointLabels; |
| Vector<JITGetByIdGenerator> m_getByIds; |
| Vector<JITGetByValGenerator> m_getByVals; |
| Vector<JITGetByIdWithThisGenerator> m_getByIdsWithThis; |
| Vector<JITPutByIdGenerator> m_putByIds; |
| Vector<JITInByIdGenerator> m_inByIds; |
| Vector<JITInByValGenerator> m_inByVals; |
| Vector<JITDelByIdGenerator> m_delByIds; |
| Vector<JITDelByValGenerator> m_delByVals; |
| Vector<JITInstanceOfGenerator> m_instanceOfs; |
| Vector<JITPrivateBrandAccessGenerator> m_privateBrandAccesses; |
| Vector<ByValCompilationInfo> m_byValCompilationInfo; |
| Vector<CallCompilationInfo> m_callCompilationInfo; |
| Vector<JumpTable> m_jmpTable; |
| |
| BytecodeIndex m_bytecodeIndex; |
| Vector<SlowCaseEntry> m_slowCases; |
| Vector<SwitchRecord> m_switches; |
| |
| HashMap<unsigned, unsigned> m_copiedGetPutInfos; |
| HashMap<uint64_t, BinaryArithProfile> m_copiedArithProfiles; |
| |
| JumpList m_exceptionChecks; |
| JumpList m_exceptionChecksWithCallFrameRollback; |
| #if !ENABLE(EXTRA_CTI_THUNKS) |
| Label m_exceptionHandler; |
| #endif |
| |
| unsigned m_getByIdIndex { UINT_MAX }; |
| unsigned m_getByValIndex { UINT_MAX }; |
| unsigned m_getByIdWithThisIndex { UINT_MAX }; |
| unsigned m_putByIdIndex { UINT_MAX }; |
| unsigned m_inByIdIndex { UINT_MAX }; |
| unsigned m_inByValIndex { UINT_MAX }; |
| unsigned m_delByValIndex { UINT_MAX }; |
| unsigned m_delByIdIndex { UINT_MAX }; |
| unsigned m_instanceOfIndex { UINT_MAX }; |
| unsigned m_privateBrandAccessIndex { UINT_MAX }; |
| unsigned m_byValInstructionIndex { UINT_MAX }; |
| unsigned m_callLinkInfoIndex { UINT_MAX }; |
| unsigned m_bytecodeCountHavingSlowCase { 0 }; |
| |
| Label m_arityCheck; |
| std::unique_ptr<LinkBuffer> m_linkBuffer; |
| |
| std::unique_ptr<JITDisassembler> m_disassembler; |
| RefPtr<Profiler::Compilation> m_compilation; |
| |
| PCToCodeOriginMapBuilder m_pcToCodeOriginMapBuilder; |
| std::unique_ptr<PCToCodeOriginMap> m_pcToCodeOriginMap; |
| |
| HashMap<const Instruction*, void*> m_instructionToMathIC; |
| HashMap<const Instruction*, UniqueRef<MathICGenerationState>> m_instructionToMathICGenerationState; |
| |
| bool m_canBeOptimized; |
| bool m_canBeOptimizedOrInlined; |
| bool m_shouldEmitProfiling; |
| BytecodeIndex m_loopOSREntryBytecodeIndex; |
| |
| RefPtr<DirectJITCode> m_jitCode; |
| }; |
| |
| } // namespace JSC |
| |
| |
| #endif // ENABLE(JIT) |
