| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_CODE_STUBS_H_ |
| #define V8_CODE_STUBS_H_ |
| |
| #include "src/allocation.h" |
| #include "src/assembler.h" |
| #include "src/codegen.h" |
| #include "src/globals.h" |
| #include "src/ic/ic-state.h" |
| #include "src/interface-descriptors.h" |
| #include "src/macro-assembler.h" |
| #include "src/ostreams.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // List of code stubs used on all platforms. |
| #define CODE_STUB_LIST_ALL_PLATFORMS(V) \ |
| /* PlatformCodeStubs */ \ |
| V(ArgumentsAccess) \ |
| V(ArrayConstructor) \ |
| V(BinaryOpICWithAllocationSite) \ |
| V(CallApiFunction) \ |
| V(CallApiGetter) \ |
| V(CallConstruct) \ |
| V(CallFunction) \ |
| V(CallIC) \ |
| V(CallIC_Array) \ |
| V(CEntry) \ |
| V(CompareIC) \ |
| V(DoubleToI) \ |
| V(FunctionPrototype) \ |
| V(Instanceof) \ |
| V(InternalArrayConstructor) \ |
| V(JSEntry) \ |
| V(KeyedLoadICTrampoline) \ |
| V(LoadICTrampoline) \ |
| V(LoadIndexedInterceptor) \ |
| V(LoadIndexedString) \ |
| V(MathPow) \ |
| V(ProfileEntryHook) \ |
| V(RecordWrite) \ |
| V(RegExpExec) \ |
| V(StoreArrayLiteralElement) \ |
| V(StoreBufferOverflow) \ |
| V(StoreElement) \ |
| V(StringCompare) \ |
| V(StubFailureTrampoline) \ |
| V(SubString) \ |
| V(ToNumber) \ |
| /* HydrogenCodeStubs */ \ |
| V(AllocateHeapNumber) \ |
| V(ArrayNArgumentsConstructor) \ |
| V(ArrayNoArgumentConstructor) \ |
| V(ArraySingleArgumentConstructor) \ |
| V(BinaryOpIC) \ |
| V(BinaryOpWithAllocationSite) \ |
| V(CompareNilIC) \ |
| V(CreateAllocationSite) \ |
| V(ElementsTransitionAndStore) \ |
| V(FastCloneShallowArray) \ |
| V(FastCloneShallowObject) \ |
| V(FastNewClosure) \ |
| V(FastNewContext) \ |
| V(InternalArrayNArgumentsConstructor) \ |
| V(InternalArrayNoArgumentConstructor) \ |
| V(InternalArraySingleArgumentConstructor) \ |
| V(KeyedLoadGeneric) \ |
| V(LoadScriptContextField) \ |
| V(LoadDictionaryElement) \ |
| V(LoadFastElement) \ |
| V(MegamorphicLoad) \ |
| V(NameDictionaryLookup) \ |
| V(NumberToString) \ |
| V(RegExpConstructResult) \ |
| V(StoreFastElement) \ |
| V(StoreScriptContextField) \ |
| V(StringAdd) \ |
| V(ToBoolean) \ |
| V(TransitionElementsKind) \ |
| V(VectorKeyedLoad) \ |
| V(VectorLoad) \ |
| /* IC Handler stubs */ \ |
| V(LoadConstant) \ |
| V(LoadField) \ |
| V(KeyedLoadSloppyArguments) \ |
| V(StoreField) \ |
| V(StoreGlobal) \ |
| V(StoreTransition) \ |
| V(StringLength) |
| |
| // List of code stubs only used on ARM 32 bits platforms. |
| #if V8_TARGET_ARCH_ARM |
| #define CODE_STUB_LIST_ARM(V) V(DirectCEntry) |
| |
| #else |
| #define CODE_STUB_LIST_ARM(V) |
| #endif |
| |
| // List of code stubs only used on ARM 64 bits platforms. |
| #if V8_TARGET_ARCH_ARM64 |
| #define CODE_STUB_LIST_ARM64(V) \ |
| V(DirectCEntry) \ |
| V(RestoreRegistersState) \ |
| V(StoreRegistersState) |
| |
| #else |
| #define CODE_STUB_LIST_ARM64(V) |
| #endif |
| |
| // List of code stubs only used on MIPS platforms. |
| #if V8_TARGET_ARCH_MIPS |
| #define CODE_STUB_LIST_MIPS(V) \ |
| V(DirectCEntry) \ |
| V(RestoreRegistersState) \ |
| V(StoreRegistersState) |
| #elif V8_TARGET_ARCH_MIPS64 |
| #define CODE_STUB_LIST_MIPS(V) \ |
| V(DirectCEntry) \ |
| V(RestoreRegistersState) \ |
| V(StoreRegistersState) |
| #else |
| #define CODE_STUB_LIST_MIPS(V) |
| #endif |
| |
| // Combined list of code stubs. |
| #define CODE_STUB_LIST(V) \ |
| CODE_STUB_LIST_ALL_PLATFORMS(V) \ |
| CODE_STUB_LIST_ARM(V) \ |
| CODE_STUB_LIST_ARM64(V) \ |
| CODE_STUB_LIST_MIPS(V) |
| |
| // Stub is base classes of all stubs. |
| class CodeStub BASE_EMBEDDED { |
| public: |
| enum Major { |
| // TODO(mvstanton): eliminate the NoCache key by getting rid |
| // of the non-monomorphic-cache. |
| NoCache = 0, // marker for stubs that do custom caching] |
| #define DEF_ENUM(name) name, |
| CODE_STUB_LIST(DEF_ENUM) |
| #undef DEF_ENUM |
| NUMBER_OF_IDS |
| }; |
| |
| // Retrieve the code for the stub. Generate the code if needed. |
| Handle<Code> GetCode(); |
| |
| // Retrieve the code for the stub, make and return a copy of the code. |
| Handle<Code> GetCodeCopy(const Code::FindAndReplacePattern& pattern); |
| |
| static Major MajorKeyFromKey(uint32_t key) { |
| return static_cast<Major>(MajorKeyBits::decode(key)); |
| } |
| static uint32_t MinorKeyFromKey(uint32_t key) { |
| return MinorKeyBits::decode(key); |
| } |
| |
| // Gets the major key from a code object that is a code stub or binary op IC. |
| static Major GetMajorKey(Code* code_stub) { |
| return MajorKeyFromKey(code_stub->stub_key()); |
| } |
| |
| static uint32_t NoCacheKey() { return MajorKeyBits::encode(NoCache); } |
| |
| static const char* MajorName(Major major_key, bool allow_unknown_keys); |
| |
| explicit CodeStub(Isolate* isolate) : minor_key_(0), isolate_(isolate) {} |
| virtual ~CodeStub() {} |
| |
| static void GenerateStubsAheadOfTime(Isolate* isolate); |
| static void GenerateFPStubs(Isolate* isolate); |
| |
| // Some stubs put untagged junk on the stack that cannot be scanned by the |
| // GC. This means that we must be statically sure that no GC can occur while |
| // they are running. If that is the case they should override this to return |
| // true, which will cause an assertion if we try to call something that can |
| // GC or if we try to put a stack frame on top of the junk, which would not |
| // result in a traversable stack. |
| virtual bool SometimesSetsUpAFrame() { return true; } |
| |
| // Lookup the code in the (possibly custom) cache. |
| bool FindCodeInCache(Code** code_out); |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() = 0; |
| |
| virtual void InitializeDescriptor(CodeStubDescriptor* descriptor) {} |
| |
| static void InitializeDescriptor(Isolate* isolate, uint32_t key, |
| CodeStubDescriptor* desc); |
| |
| static MaybeHandle<Code> GetCode(Isolate* isolate, uint32_t key); |
| |
| // Returns information for computing the number key. |
| virtual Major MajorKey() const = 0; |
| uint32_t MinorKey() const { return minor_key_; } |
| |
| virtual InlineCacheState GetICState() const { return UNINITIALIZED; } |
| virtual ExtraICState GetExtraICState() const { return kNoExtraICState; } |
| virtual Code::StubType GetStubType() { |
| return Code::NORMAL; |
| } |
| |
| friend std::ostream& operator<<(std::ostream& os, const CodeStub& s) { |
| s.PrintName(os); |
| return os; |
| } |
| |
| Isolate* isolate() const { return isolate_; } |
| |
| protected: |
| CodeStub(uint32_t key, Isolate* isolate) |
| : minor_key_(MinorKeyFromKey(key)), isolate_(isolate) {} |
| |
| // Generates the assembler code for the stub. |
| virtual Handle<Code> GenerateCode() = 0; |
| |
| // Returns whether the code generated for this stub needs to be allocated as |
| // a fixed (non-moveable) code object. |
| virtual bool NeedsImmovableCode() { return false; } |
| |
| virtual void PrintName(std::ostream& os) const; // NOLINT |
| virtual void PrintBaseName(std::ostream& os) const; // NOLINT |
| virtual void PrintState(std::ostream& os) const { ; } // NOLINT |
| |
| // Computes the key based on major and minor. |
| uint32_t GetKey() { |
| DCHECK(static_cast<int>(MajorKey()) < NUMBER_OF_IDS); |
| return MinorKeyBits::encode(MinorKey()) | MajorKeyBits::encode(MajorKey()); |
| } |
| |
| uint32_t minor_key_; |
| |
| private: |
| // Perform bookkeeping required after code generation when stub code is |
| // initially generated. |
| void RecordCodeGeneration(Handle<Code> code); |
| |
| // Finish the code object after it has been generated. |
| virtual void FinishCode(Handle<Code> code) { } |
| |
| // Activate newly generated stub. Is called after |
| // registering stub in the stub cache. |
| virtual void Activate(Code* code) { } |
| |
| // BinaryOpStub needs to override this. |
| virtual Code::Kind GetCodeKind() const; |
| |
| // Add the code to a specialized cache, specific to an individual |
| // stub type. Please note, this method must add the code object to a |
| // roots object, otherwise we will remove the code during GC. |
| virtual void AddToSpecialCache(Handle<Code> new_object) { } |
| |
| // Find code in a specialized cache, work is delegated to the specific stub. |
| virtual bool FindCodeInSpecialCache(Code** code_out) { |
| return false; |
| } |
| |
| // If a stub uses a special cache override this. |
| virtual bool UseSpecialCache() { return false; } |
| |
| // We use this dispatch to statically instantiate the correct code stub for |
| // the given stub key and call the passed function with that code stub. |
| typedef void (*DispatchedCall)(CodeStub* stub, void** value_out); |
| static void Dispatch(Isolate* isolate, uint32_t key, void** value_out, |
| DispatchedCall call); |
| |
| static void GetCodeDispatchCall(CodeStub* stub, void** value_out); |
| |
| STATIC_ASSERT(NUMBER_OF_IDS < (1 << kStubMajorKeyBits)); |
| class MajorKeyBits: public BitField<uint32_t, 0, kStubMajorKeyBits> {}; |
| class MinorKeyBits: public BitField<uint32_t, |
| kStubMajorKeyBits, kStubMinorKeyBits> {}; // NOLINT |
| |
| friend class BreakPointIterator; |
| |
| Isolate* isolate_; |
| }; |
| |
| |
| #define DEFINE_CODE_STUB_BASE(NAME, SUPER) \ |
| public: \ |
| NAME(uint32_t key, Isolate* isolate) : SUPER(key, isolate) {} \ |
| \ |
| private: \ |
| DISALLOW_COPY_AND_ASSIGN(NAME) |
| |
| |
| #define DEFINE_CODE_STUB(NAME, SUPER) \ |
| protected: \ |
| virtual inline Major MajorKey() const OVERRIDE { \ |
| return NAME; \ |
| }; \ |
| DEFINE_CODE_STUB_BASE(NAME##Stub, SUPER) |
| |
| |
| #define DEFINE_PLATFORM_CODE_STUB(NAME, SUPER) \ |
| private: \ |
| virtual void Generate(MacroAssembler* masm) OVERRIDE; \ |
| DEFINE_CODE_STUB(NAME, SUPER) |
| |
| |
| #define DEFINE_HYDROGEN_CODE_STUB(NAME, SUPER) \ |
| public: \ |
| virtual void InitializeDescriptor(CodeStubDescriptor* descriptor) OVERRIDE; \ |
| virtual Handle<Code> GenerateCode() OVERRIDE; \ |
| DEFINE_CODE_STUB(NAME, SUPER) |
| |
| #define DEFINE_HANDLER_CODE_STUB(NAME, SUPER) \ |
| public: \ |
| virtual Handle<Code> GenerateCode() OVERRIDE; \ |
| DEFINE_CODE_STUB(NAME, SUPER) |
| |
| #define DEFINE_CALL_INTERFACE_DESCRIPTOR(NAME) \ |
| public: \ |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { \ |
| return NAME##Descriptor(isolate()); \ |
| } |
| |
| // There are some code stubs we just can't describe right now with a |
| // CallInterfaceDescriptor. Isolate behavior for those cases with this macro. |
| // An attempt to retrieve a descriptor will fail. |
| #define DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR() \ |
| public: \ |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { \ |
| UNREACHABLE(); \ |
| return CallInterfaceDescriptor(); \ |
| } |
| |
| |
| class PlatformCodeStub : public CodeStub { |
| public: |
| // Retrieve the code for the stub. Generate the code if needed. |
| virtual Handle<Code> GenerateCode() OVERRIDE; |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::STUB; } |
| |
| protected: |
| explicit PlatformCodeStub(Isolate* isolate) : CodeStub(isolate) {} |
| |
| // Generates the assembler code for the stub. |
| virtual void Generate(MacroAssembler* masm) = 0; |
| |
| DEFINE_CODE_STUB_BASE(PlatformCodeStub, CodeStub); |
| }; |
| |
| |
| enum StubFunctionMode { NOT_JS_FUNCTION_STUB_MODE, JS_FUNCTION_STUB_MODE }; |
| enum HandlerArgumentsMode { DONT_PASS_ARGUMENTS, PASS_ARGUMENTS }; |
| |
| |
| class CodeStubDescriptor { |
| public: |
| explicit CodeStubDescriptor(CodeStub* stub); |
| |
| CodeStubDescriptor(Isolate* isolate, uint32_t stub_key); |
| |
| void Initialize(Address deoptimization_handler = NULL, |
| int hint_stack_parameter_count = -1, |
| StubFunctionMode function_mode = NOT_JS_FUNCTION_STUB_MODE); |
| void Initialize(Register stack_parameter_count, |
| Address deoptimization_handler = NULL, |
| int hint_stack_parameter_count = -1, |
| StubFunctionMode function_mode = NOT_JS_FUNCTION_STUB_MODE, |
| HandlerArgumentsMode handler_mode = DONT_PASS_ARGUMENTS); |
| |
| void SetMissHandler(ExternalReference handler) { |
| miss_handler_ = handler; |
| has_miss_handler_ = true; |
| // Our miss handler infrastructure doesn't currently support |
| // variable stack parameter counts. |
| DCHECK(!stack_parameter_count_.is_valid()); |
| } |
| |
| void set_call_descriptor(CallInterfaceDescriptor d) { call_descriptor_ = d; } |
| CallInterfaceDescriptor call_descriptor() const { return call_descriptor_; } |
| |
| int GetEnvironmentParameterCount() const { |
| return call_descriptor().GetEnvironmentParameterCount(); |
| } |
| |
| Representation GetEnvironmentParameterRepresentation(int index) const { |
| return call_descriptor().GetEnvironmentParameterRepresentation(index); |
| } |
| |
| ExternalReference miss_handler() const { |
| DCHECK(has_miss_handler_); |
| return miss_handler_; |
| } |
| |
| bool has_miss_handler() const { |
| return has_miss_handler_; |
| } |
| |
| bool IsEnvironmentParameterCountRegister(int index) const { |
| return call_descriptor().GetEnvironmentParameterRegister(index).is( |
| stack_parameter_count_); |
| } |
| |
| int GetHandlerParameterCount() const { |
| int params = call_descriptor().GetEnvironmentParameterCount(); |
| if (handler_arguments_mode_ == PASS_ARGUMENTS) { |
| params += 1; |
| } |
| return params; |
| } |
| |
| int hint_stack_parameter_count() const { return hint_stack_parameter_count_; } |
| Register stack_parameter_count() const { return stack_parameter_count_; } |
| StubFunctionMode function_mode() const { return function_mode_; } |
| Address deoptimization_handler() const { return deoptimization_handler_; } |
| |
| private: |
| CallInterfaceDescriptor call_descriptor_; |
| Register stack_parameter_count_; |
| // If hint_stack_parameter_count_ > 0, the code stub can optimize the |
| // return sequence. Default value is -1, which means it is ignored. |
| int hint_stack_parameter_count_; |
| StubFunctionMode function_mode_; |
| |
| Address deoptimization_handler_; |
| HandlerArgumentsMode handler_arguments_mode_; |
| |
| ExternalReference miss_handler_; |
| bool has_miss_handler_; |
| }; |
| |
| |
| class HydrogenCodeStub : public CodeStub { |
| public: |
| enum InitializationState { |
| UNINITIALIZED, |
| INITIALIZED |
| }; |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::STUB; } |
| |
| template<class SubClass> |
| static Handle<Code> GetUninitialized(Isolate* isolate) { |
| SubClass::GenerateAheadOfTime(isolate); |
| return SubClass().GetCode(isolate); |
| } |
| |
| // Retrieve the code for the stub. Generate the code if needed. |
| virtual Handle<Code> GenerateCode() = 0; |
| |
| bool IsUninitialized() const { return IsMissBits::decode(minor_key_); } |
| |
| Handle<Code> GenerateLightweightMissCode(ExternalReference miss); |
| |
| template<class StateType> |
| void TraceTransition(StateType from, StateType to); |
| |
| protected: |
| explicit HydrogenCodeStub(Isolate* isolate, |
| InitializationState state = INITIALIZED) |
| : CodeStub(isolate) { |
| minor_key_ = IsMissBits::encode(state == UNINITIALIZED); |
| } |
| |
| void set_sub_minor_key(uint32_t key) { |
| minor_key_ = SubMinorKeyBits::update(minor_key_, key); |
| } |
| |
| uint32_t sub_minor_key() const { return SubMinorKeyBits::decode(minor_key_); } |
| |
| static const int kSubMinorKeyBits = kStubMinorKeyBits - 1; |
| |
| private: |
| class IsMissBits : public BitField<bool, kSubMinorKeyBits, 1> {}; |
| class SubMinorKeyBits : public BitField<int, 0, kSubMinorKeyBits> {}; |
| |
| void GenerateLightweightMiss(MacroAssembler* masm, ExternalReference miss); |
| |
| DEFINE_CODE_STUB_BASE(HydrogenCodeStub, CodeStub); |
| }; |
| |
| |
| // Helper interface to prepare to/restore after making runtime calls. |
| class RuntimeCallHelper { |
| public: |
| virtual ~RuntimeCallHelper() {} |
| |
| virtual void BeforeCall(MacroAssembler* masm) const = 0; |
| |
| virtual void AfterCall(MacroAssembler* masm) const = 0; |
| |
| protected: |
| RuntimeCallHelper() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(RuntimeCallHelper); |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #if V8_TARGET_ARCH_IA32 |
| #include "src/ia32/code-stubs-ia32.h" |
| #elif V8_TARGET_ARCH_X64 |
| #include "src/x64/code-stubs-x64.h" |
| #elif V8_TARGET_ARCH_ARM64 |
| #include "src/arm64/code-stubs-arm64.h" |
| #elif V8_TARGET_ARCH_ARM |
| #include "src/arm/code-stubs-arm.h" |
| #elif V8_TARGET_ARCH_MIPS |
| #include "src/mips/code-stubs-mips.h" |
| #elif V8_TARGET_ARCH_MIPS64 |
| #include "src/mips64/code-stubs-mips64.h" |
| #elif V8_TARGET_ARCH_X87 |
| #include "src/x87/code-stubs-x87.h" |
| #else |
| #error Unsupported target architecture. |
| #endif |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| // RuntimeCallHelper implementation used in stubs: enters/leaves a |
| // newly created internal frame before/after the runtime call. |
| class StubRuntimeCallHelper : public RuntimeCallHelper { |
| public: |
| StubRuntimeCallHelper() {} |
| |
| virtual void BeforeCall(MacroAssembler* masm) const; |
| |
| virtual void AfterCall(MacroAssembler* masm) const; |
| }; |
| |
| |
| // Trivial RuntimeCallHelper implementation. |
| class NopRuntimeCallHelper : public RuntimeCallHelper { |
| public: |
| NopRuntimeCallHelper() {} |
| |
| virtual void BeforeCall(MacroAssembler* masm) const {} |
| |
| virtual void AfterCall(MacroAssembler* masm) const {} |
| }; |
| |
| |
| class NumberToStringStub FINAL : public HydrogenCodeStub { |
| public: |
| explicit NumberToStringStub(Isolate* isolate) : HydrogenCodeStub(isolate) {} |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kNumber = 0; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(NumberToString); |
| DEFINE_HYDROGEN_CODE_STUB(NumberToString, HydrogenCodeStub); |
| }; |
| |
| |
| class FastNewClosureStub : public HydrogenCodeStub { |
| public: |
| FastNewClosureStub(Isolate* isolate, StrictMode strict_mode, |
| FunctionKind kind) |
| : HydrogenCodeStub(isolate) { |
| DCHECK(IsValidFunctionKind(kind)); |
| set_sub_minor_key(StrictModeBits::encode(strict_mode) | |
| FunctionKindBits::encode(kind)); |
| } |
| |
| StrictMode strict_mode() const { |
| return StrictModeBits::decode(sub_minor_key()); |
| } |
| |
| FunctionKind kind() const { |
| return FunctionKindBits::decode(sub_minor_key()); |
| } |
| bool is_arrow() const { return IsArrowFunction(kind()); } |
| bool is_generator() const { return IsGeneratorFunction(kind()); } |
| bool is_concise_method() const { return IsConciseMethod(kind()); } |
| bool is_default_constructor() const { return IsDefaultConstructor(kind()); } |
| bool is_default_constructor_call_super() const { |
| return IsDefaultConstructorCallSuper(kind()); |
| } |
| |
| private: |
| class StrictModeBits : public BitField<StrictMode, 0, 1> {}; |
| class FunctionKindBits : public BitField<FunctionKind, 1, 5> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(FastNewClosure); |
| DEFINE_HYDROGEN_CODE_STUB(FastNewClosure, HydrogenCodeStub); |
| }; |
| |
| |
| class FastNewContextStub FINAL : public HydrogenCodeStub { |
| public: |
| static const int kMaximumSlots = 64; |
| |
| FastNewContextStub(Isolate* isolate, int slots) : HydrogenCodeStub(isolate) { |
| DCHECK(slots > 0 && slots <= kMaximumSlots); |
| set_sub_minor_key(SlotsBits::encode(slots)); |
| } |
| |
| int slots() const { return SlotsBits::decode(sub_minor_key()); } |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kFunction = 0; |
| |
| private: |
| class SlotsBits : public BitField<int, 0, 8> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(FastNewContext); |
| DEFINE_HYDROGEN_CODE_STUB(FastNewContext, HydrogenCodeStub); |
| }; |
| |
| |
| class FastCloneShallowArrayStub : public HydrogenCodeStub { |
| public: |
| FastCloneShallowArrayStub(Isolate* isolate, |
| AllocationSiteMode allocation_site_mode) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(AllocationSiteModeBits::encode(allocation_site_mode)); |
| } |
| |
| AllocationSiteMode allocation_site_mode() const { |
| return AllocationSiteModeBits::decode(sub_minor_key()); |
| } |
| |
| private: |
| class AllocationSiteModeBits: public BitField<AllocationSiteMode, 0, 1> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(FastCloneShallowArray); |
| DEFINE_HYDROGEN_CODE_STUB(FastCloneShallowArray, HydrogenCodeStub); |
| }; |
| |
| |
| class FastCloneShallowObjectStub : public HydrogenCodeStub { |
| public: |
| // Maximum number of properties in copied object. |
| static const int kMaximumClonedProperties = 6; |
| |
| FastCloneShallowObjectStub(Isolate* isolate, int length) |
| : HydrogenCodeStub(isolate) { |
| DCHECK_GE(length, 0); |
| DCHECK_LE(length, kMaximumClonedProperties); |
| set_sub_minor_key(LengthBits::encode(length)); |
| } |
| |
| int length() const { return LengthBits::decode(sub_minor_key()); } |
| |
| private: |
| class LengthBits : public BitField<int, 0, 4> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(FastCloneShallowObject); |
| DEFINE_HYDROGEN_CODE_STUB(FastCloneShallowObject, HydrogenCodeStub); |
| }; |
| |
| |
| class CreateAllocationSiteStub : public HydrogenCodeStub { |
| public: |
| explicit CreateAllocationSiteStub(Isolate* isolate) |
| : HydrogenCodeStub(isolate) { } |
| |
| static void GenerateAheadOfTime(Isolate* isolate); |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(CreateAllocationSite); |
| DEFINE_HYDROGEN_CODE_STUB(CreateAllocationSite, HydrogenCodeStub); |
| }; |
| |
| |
| class InstanceofStub: public PlatformCodeStub { |
| public: |
| enum Flags { |
| kNoFlags = 0, |
| kArgsInRegisters = 1 << 0, |
| kCallSiteInlineCheck = 1 << 1, |
| kReturnTrueFalseObject = 1 << 2 |
| }; |
| |
| InstanceofStub(Isolate* isolate, Flags flags) : PlatformCodeStub(isolate) { |
| minor_key_ = FlagBits::encode(flags); |
| } |
| |
| static Register left() { return InstanceofDescriptor::left(); } |
| static Register right() { return InstanceofDescriptor::right(); } |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (HasArgsInRegisters()) { |
| return InstanceofDescriptor(isolate()); |
| } |
| return ContextOnlyDescriptor(isolate()); |
| } |
| |
| private: |
| Flags flags() const { return FlagBits::decode(minor_key_); } |
| |
| bool HasArgsInRegisters() const { return (flags() & kArgsInRegisters) != 0; } |
| |
| bool HasCallSiteInlineCheck() const { |
| return (flags() & kCallSiteInlineCheck) != 0; |
| } |
| |
| bool ReturnTrueFalseObject() const { |
| return (flags() & kReturnTrueFalseObject) != 0; |
| } |
| |
| virtual void PrintName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| class FlagBits : public BitField<Flags, 0, 3> {}; |
| |
| DEFINE_PLATFORM_CODE_STUB(Instanceof, PlatformCodeStub); |
| }; |
| |
| |
| enum AllocationSiteOverrideMode { |
| DONT_OVERRIDE, |
| DISABLE_ALLOCATION_SITES, |
| LAST_ALLOCATION_SITE_OVERRIDE_MODE = DISABLE_ALLOCATION_SITES |
| }; |
| |
| |
| class ArrayConstructorStub: public PlatformCodeStub { |
| public: |
| enum ArgumentCountKey { ANY, NONE, ONE, MORE_THAN_ONE }; |
| |
| ArrayConstructorStub(Isolate* isolate, int argument_count); |
| |
| explicit ArrayConstructorStub(Isolate* isolate); |
| |
| private: |
| ArgumentCountKey argument_count() const { |
| return ArgumentCountBits::decode(minor_key_); |
| } |
| |
| void GenerateDispatchToArrayStub(MacroAssembler* masm, |
| AllocationSiteOverrideMode mode); |
| |
| virtual void PrintName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| class ArgumentCountBits : public BitField<ArgumentCountKey, 0, 2> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ArrayConstructor); |
| DEFINE_PLATFORM_CODE_STUB(ArrayConstructor, PlatformCodeStub); |
| }; |
| |
| |
| class InternalArrayConstructorStub: public PlatformCodeStub { |
| public: |
| explicit InternalArrayConstructorStub(Isolate* isolate); |
| |
| private: |
| void GenerateCase(MacroAssembler* masm, ElementsKind kind); |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(InternalArrayConstructor); |
| DEFINE_PLATFORM_CODE_STUB(InternalArrayConstructor, PlatformCodeStub); |
| }; |
| |
| |
| class MathPowStub: public PlatformCodeStub { |
| public: |
| enum ExponentType { INTEGER, DOUBLE, TAGGED, ON_STACK }; |
| |
| MathPowStub(Isolate* isolate, ExponentType exponent_type) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = ExponentTypeBits::encode(exponent_type); |
| } |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (exponent_type() == TAGGED) { |
| return MathPowTaggedDescriptor(isolate()); |
| } else if (exponent_type() == INTEGER) { |
| return MathPowIntegerDescriptor(isolate()); |
| } |
| // A CallInterfaceDescriptor doesn't specify double registers (yet). |
| return ContextOnlyDescriptor(isolate()); |
| } |
| |
| private: |
| ExponentType exponent_type() const { |
| return ExponentTypeBits::decode(minor_key_); |
| } |
| |
| class ExponentTypeBits : public BitField<ExponentType, 0, 2> {}; |
| |
| DEFINE_PLATFORM_CODE_STUB(MathPow, PlatformCodeStub); |
| }; |
| |
| |
| class CallICStub: public PlatformCodeStub { |
| public: |
| CallICStub(Isolate* isolate, const CallICState& state) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = state.GetExtraICState(); |
| } |
| |
| static int ExtractArgcFromMinorKey(int minor_key) { |
| CallICState state(static_cast<ExtraICState>(minor_key)); |
| return state.arg_count(); |
| } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::CALL_IC; } |
| |
| virtual InlineCacheState GetICState() const OVERRIDE { return DEFAULT; } |
| |
| virtual ExtraICState GetExtraICState() const FINAL OVERRIDE { |
| return static_cast<ExtraICState>(minor_key_); |
| } |
| |
| protected: |
| bool CallAsMethod() const { |
| return state().call_type() == CallICState::METHOD; |
| } |
| |
| int arg_count() const { return state().arg_count(); } |
| |
| CallICState state() const { |
| return CallICState(static_cast<ExtraICState>(minor_key_)); |
| } |
| |
| // Code generation helpers. |
| void GenerateMiss(MacroAssembler* masm); |
| |
| private: |
| virtual void PrintState(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunctionWithFeedback); |
| DEFINE_PLATFORM_CODE_STUB(CallIC, PlatformCodeStub); |
| }; |
| |
| |
| class CallIC_ArrayStub: public CallICStub { |
| public: |
| CallIC_ArrayStub(Isolate* isolate, const CallICState& state_in) |
| : CallICStub(isolate, state_in) {} |
| |
| virtual InlineCacheState GetICState() const FINAL OVERRIDE { |
| return MONOMORPHIC; |
| } |
| |
| private: |
| virtual void PrintState(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| DEFINE_PLATFORM_CODE_STUB(CallIC_Array, CallICStub); |
| }; |
| |
| |
| // TODO(verwaest): Translate to hydrogen code stub. |
| class FunctionPrototypeStub : public PlatformCodeStub { |
| public: |
| explicit FunctionPrototypeStub(Isolate* isolate) |
| : PlatformCodeStub(isolate) {} |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; } |
| |
| // TODO(mvstanton): only the receiver register is accessed. When this is |
| // translated to a hydrogen code stub, a new CallInterfaceDescriptor |
| // should be created that just uses that register for more efficient code. |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (FLAG_vector_ics) { |
| return VectorLoadICDescriptor(isolate()); |
| } |
| return LoadDescriptor(isolate()); |
| } |
| |
| DEFINE_PLATFORM_CODE_STUB(FunctionPrototype, PlatformCodeStub); |
| }; |
| |
| |
| // TODO(mvstanton): Translate to hydrogen code stub. |
| class LoadIndexedInterceptorStub : public PlatformCodeStub { |
| public: |
| explicit LoadIndexedInterceptorStub(Isolate* isolate) |
| : PlatformCodeStub(isolate) {} |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(Load); |
| DEFINE_PLATFORM_CODE_STUB(LoadIndexedInterceptor, PlatformCodeStub); |
| }; |
| |
| |
| class LoadIndexedStringStub : public PlatformCodeStub { |
| public: |
| explicit LoadIndexedStringStub(Isolate* isolate) |
| : PlatformCodeStub(isolate) {} |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(Load); |
| DEFINE_PLATFORM_CODE_STUB(LoadIndexedString, PlatformCodeStub); |
| }; |
| |
| |
| class HandlerStub : public HydrogenCodeStub { |
| public: |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; } |
| virtual ExtraICState GetExtraICState() const OVERRIDE { return kind(); } |
| virtual InlineCacheState GetICState() const OVERRIDE { return MONOMORPHIC; } |
| |
| virtual void InitializeDescriptor(CodeStubDescriptor* descriptor) OVERRIDE; |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE; |
| |
| protected: |
| explicit HandlerStub(Isolate* isolate) : HydrogenCodeStub(isolate) {} |
| |
| virtual Code::Kind kind() const = 0; |
| |
| DEFINE_CODE_STUB_BASE(HandlerStub, HydrogenCodeStub); |
| }; |
| |
| |
| class LoadFieldStub: public HandlerStub { |
| public: |
| LoadFieldStub(Isolate* isolate, FieldIndex index) : HandlerStub(isolate) { |
| int property_index_key = index.GetFieldAccessStubKey(); |
| set_sub_minor_key(LoadFieldByIndexBits::encode(property_index_key)); |
| } |
| |
| FieldIndex index() const { |
| int property_index_key = LoadFieldByIndexBits::decode(sub_minor_key()); |
| return FieldIndex::FromFieldAccessStubKey(property_index_key); |
| } |
| |
| protected: |
| virtual Code::Kind kind() const { return Code::LOAD_IC; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| private: |
| class LoadFieldByIndexBits : public BitField<int, 0, 13> {}; |
| |
| DEFINE_HANDLER_CODE_STUB(LoadField, HandlerStub); |
| }; |
| |
| |
| class KeyedLoadSloppyArgumentsStub : public HandlerStub { |
| public: |
| explicit KeyedLoadSloppyArgumentsStub(Isolate* isolate) |
| : HandlerStub(isolate) {} |
| |
| protected: |
| virtual Code::Kind kind() const OVERRIDE { return Code::KEYED_LOAD_IC; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| private: |
| DEFINE_HANDLER_CODE_STUB(KeyedLoadSloppyArguments, HandlerStub); |
| }; |
| |
| |
| class LoadConstantStub : public HandlerStub { |
| public: |
| LoadConstantStub(Isolate* isolate, int constant_index) |
| : HandlerStub(isolate) { |
| set_sub_minor_key(ConstantIndexBits::encode(constant_index)); |
| } |
| |
| int constant_index() const { |
| return ConstantIndexBits::decode(sub_minor_key()); |
| } |
| |
| protected: |
| virtual Code::Kind kind() const OVERRIDE { return Code::LOAD_IC; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| private: |
| class ConstantIndexBits : public BitField<int, 0, kSubMinorKeyBits> {}; |
| |
| DEFINE_HANDLER_CODE_STUB(LoadConstant, HandlerStub); |
| }; |
| |
| |
| class StringLengthStub: public HandlerStub { |
| public: |
| explicit StringLengthStub(Isolate* isolate) : HandlerStub(isolate) {} |
| |
| protected: |
| virtual Code::Kind kind() const OVERRIDE { return Code::LOAD_IC; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| DEFINE_HANDLER_CODE_STUB(StringLength, HandlerStub); |
| }; |
| |
| |
| class StoreFieldStub : public HandlerStub { |
| public: |
| StoreFieldStub(Isolate* isolate, FieldIndex index, |
| Representation representation) |
| : HandlerStub(isolate) { |
| int property_index_key = index.GetFieldAccessStubKey(); |
| uint8_t repr = PropertyDetails::EncodeRepresentation(representation); |
| set_sub_minor_key(StoreFieldByIndexBits::encode(property_index_key) | |
| RepresentationBits::encode(repr)); |
| } |
| |
| FieldIndex index() const { |
| int property_index_key = StoreFieldByIndexBits::decode(sub_minor_key()); |
| return FieldIndex::FromFieldAccessStubKey(property_index_key); |
| } |
| |
| Representation representation() { |
| uint8_t repr = RepresentationBits::decode(sub_minor_key()); |
| return PropertyDetails::DecodeRepresentation(repr); |
| } |
| |
| protected: |
| virtual Code::Kind kind() const OVERRIDE { return Code::STORE_IC; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| private: |
| class StoreFieldByIndexBits : public BitField<int, 0, 13> {}; |
| class RepresentationBits : public BitField<uint8_t, 13, 4> {}; |
| |
| DEFINE_HANDLER_CODE_STUB(StoreField, HandlerStub); |
| }; |
| |
| |
| class StoreTransitionStub : public HandlerStub { |
| public: |
| enum StoreMode { |
| StoreMapOnly, |
| StoreMapAndValue, |
| ExtendStorageAndStoreMapAndValue |
| }; |
| |
| explicit StoreTransitionStub(Isolate* isolate) : HandlerStub(isolate) { |
| set_sub_minor_key(StoreModeBits::encode(StoreMapOnly)); |
| } |
| |
| StoreTransitionStub(Isolate* isolate, FieldIndex index, |
| Representation representation, StoreMode store_mode) |
| : HandlerStub(isolate) { |
| DCHECK(store_mode != StoreMapOnly); |
| int property_index_key = index.GetFieldAccessStubKey(); |
| uint8_t repr = PropertyDetails::EncodeRepresentation(representation); |
| set_sub_minor_key(StoreFieldByIndexBits::encode(property_index_key) | |
| RepresentationBits::encode(repr) | |
| StoreModeBits::encode(store_mode)); |
| } |
| |
| FieldIndex index() const { |
| DCHECK(store_mode() != StoreMapOnly); |
| int property_index_key = StoreFieldByIndexBits::decode(sub_minor_key()); |
| return FieldIndex::FromFieldAccessStubKey(property_index_key); |
| } |
| |
| Representation representation() { |
| DCHECK(store_mode() != StoreMapOnly); |
| uint8_t repr = RepresentationBits::decode(sub_minor_key()); |
| return PropertyDetails::DecodeRepresentation(repr); |
| } |
| |
| StoreMode store_mode() const { |
| return StoreModeBits::decode(sub_minor_key()); |
| } |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE; |
| |
| protected: |
| virtual Code::Kind kind() const OVERRIDE { return Code::STORE_IC; } |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| private: |
| class StoreFieldByIndexBits : public BitField<int, 0, 13> {}; |
| class RepresentationBits : public BitField<uint8_t, 13, 4> {}; |
| class StoreModeBits : public BitField<StoreMode, 17, 2> {}; |
| |
| DEFINE_HANDLER_CODE_STUB(StoreTransition, HandlerStub); |
| }; |
| |
| |
| class StoreGlobalStub : public HandlerStub { |
| public: |
| StoreGlobalStub(Isolate* isolate, bool is_constant, bool check_global) |
| : HandlerStub(isolate) { |
| set_sub_minor_key(IsConstantBits::encode(is_constant) | |
| CheckGlobalBits::encode(check_global)); |
| } |
| |
| static Handle<HeapObject> global_placeholder(Isolate* isolate) { |
| return isolate->factory()->uninitialized_value(); |
| } |
| |
| Handle<Code> GetCodeCopyFromTemplate(Handle<GlobalObject> global, |
| Handle<PropertyCell> cell) { |
| if (check_global()) { |
| Code::FindAndReplacePattern pattern; |
| pattern.Add(Handle<Map>(global_placeholder(isolate())->map()), global); |
| pattern.Add(isolate()->factory()->meta_map(), Handle<Map>(global->map())); |
| pattern.Add(isolate()->factory()->global_property_cell_map(), cell); |
| return CodeStub::GetCodeCopy(pattern); |
| } else { |
| Code::FindAndReplacePattern pattern; |
| pattern.Add(isolate()->factory()->global_property_cell_map(), cell); |
| return CodeStub::GetCodeCopy(pattern); |
| } |
| } |
| |
| virtual Code::Kind kind() const OVERRIDE { return Code::STORE_IC; } |
| |
| bool is_constant() const { return IsConstantBits::decode(sub_minor_key()); } |
| |
| bool check_global() const { return CheckGlobalBits::decode(sub_minor_key()); } |
| |
| void set_is_constant(bool value) { |
| set_sub_minor_key(IsConstantBits::update(sub_minor_key(), value)); |
| } |
| |
| Representation representation() { |
| return Representation::FromKind( |
| RepresentationBits::decode(sub_minor_key())); |
| } |
| |
| void set_representation(Representation r) { |
| set_sub_minor_key(RepresentationBits::update(sub_minor_key(), r.kind())); |
| } |
| |
| private: |
| class IsConstantBits: public BitField<bool, 0, 1> {}; |
| class RepresentationBits: public BitField<Representation::Kind, 1, 8> {}; |
| class CheckGlobalBits: public BitField<bool, 9, 1> {}; |
| |
| DEFINE_HANDLER_CODE_STUB(StoreGlobal, HandlerStub); |
| }; |
| |
| |
| class CallApiFunctionStub : public PlatformCodeStub { |
| public: |
| CallApiFunctionStub(Isolate* isolate, |
| bool is_store, |
| bool call_data_undefined, |
| int argc) : PlatformCodeStub(isolate) { |
| minor_key_ = IsStoreBits::encode(is_store) | |
| CallDataUndefinedBits::encode(call_data_undefined) | |
| ArgumentBits::encode(argc); |
| DCHECK(!is_store || argc == 1); |
| } |
| |
| private: |
| bool is_store() const { return IsStoreBits::decode(minor_key_); } |
| bool call_data_undefined() const { |
| return CallDataUndefinedBits::decode(minor_key_); |
| } |
| int argc() const { return ArgumentBits::decode(minor_key_); } |
| |
| class IsStoreBits: public BitField<bool, 0, 1> {}; |
| class CallDataUndefinedBits: public BitField<bool, 1, 1> {}; |
| class ArgumentBits: public BitField<int, 2, Code::kArgumentsBits> {}; |
| STATIC_ASSERT(Code::kArgumentsBits + 2 <= kStubMinorKeyBits); |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ApiFunction); |
| DEFINE_PLATFORM_CODE_STUB(CallApiFunction, PlatformCodeStub); |
| }; |
| |
| |
| class CallApiGetterStub : public PlatformCodeStub { |
| public: |
| explicit CallApiGetterStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ApiGetter); |
| DEFINE_PLATFORM_CODE_STUB(CallApiGetter, PlatformCodeStub); |
| }; |
| |
| |
| class BinaryOpICStub : public HydrogenCodeStub { |
| public: |
| BinaryOpICStub(Isolate* isolate, Token::Value op, |
| OverwriteMode mode = NO_OVERWRITE) |
| : HydrogenCodeStub(isolate, UNINITIALIZED) { |
| BinaryOpICState state(isolate, op, mode); |
| set_sub_minor_key(state.GetExtraICState()); |
| } |
| |
| BinaryOpICStub(Isolate* isolate, const BinaryOpICState& state) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(state.GetExtraICState()); |
| } |
| |
| static void GenerateAheadOfTime(Isolate* isolate); |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::BINARY_OP_IC; |
| } |
| |
| virtual InlineCacheState GetICState() const FINAL OVERRIDE { |
| return state().GetICState(); |
| } |
| |
| virtual ExtraICState GetExtraICState() const FINAL OVERRIDE { |
| return static_cast<ExtraICState>(sub_minor_key()); |
| } |
| |
| BinaryOpICState state() const { |
| return BinaryOpICState(isolate(), GetExtraICState()); |
| } |
| |
| virtual void PrintState(std::ostream& os) const FINAL OVERRIDE; // NOLINT |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kLeft = 0; |
| static const int kRight = 1; |
| |
| private: |
| static void GenerateAheadOfTime(Isolate* isolate, |
| const BinaryOpICState& state); |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp); |
| DEFINE_HYDROGEN_CODE_STUB(BinaryOpIC, HydrogenCodeStub); |
| }; |
| |
| |
| // TODO(bmeurer): Merge this into the BinaryOpICStub once we have proper tail |
| // call support for stubs in Hydrogen. |
| class BinaryOpICWithAllocationSiteStub FINAL : public PlatformCodeStub { |
| public: |
| BinaryOpICWithAllocationSiteStub(Isolate* isolate, |
| const BinaryOpICState& state) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = state.GetExtraICState(); |
| } |
| |
| static void GenerateAheadOfTime(Isolate* isolate); |
| |
| Handle<Code> GetCodeCopyFromTemplate(Handle<AllocationSite> allocation_site) { |
| Code::FindAndReplacePattern pattern; |
| pattern.Add(isolate()->factory()->undefined_map(), allocation_site); |
| return CodeStub::GetCodeCopy(pattern); |
| } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::BINARY_OP_IC; |
| } |
| |
| virtual InlineCacheState GetICState() const OVERRIDE { |
| return state().GetICState(); |
| } |
| |
| virtual ExtraICState GetExtraICState() const OVERRIDE { |
| return static_cast<ExtraICState>(minor_key_); |
| } |
| |
| virtual void PrintState(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| private: |
| BinaryOpICState state() const { |
| return BinaryOpICState(isolate(), static_cast<ExtraICState>(minor_key_)); |
| } |
| |
| static void GenerateAheadOfTime(Isolate* isolate, |
| const BinaryOpICState& state); |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOpWithAllocationSite); |
| DEFINE_PLATFORM_CODE_STUB(BinaryOpICWithAllocationSite, PlatformCodeStub); |
| }; |
| |
| |
| class BinaryOpWithAllocationSiteStub FINAL : public BinaryOpICStub { |
| public: |
| BinaryOpWithAllocationSiteStub(Isolate* isolate, |
| Token::Value op, |
| OverwriteMode mode) |
| : BinaryOpICStub(isolate, op, mode) {} |
| |
| BinaryOpWithAllocationSiteStub(Isolate* isolate, const BinaryOpICState& state) |
| : BinaryOpICStub(isolate, state) {} |
| |
| virtual Code::Kind GetCodeKind() const FINAL OVERRIDE { |
| return Code::STUB; |
| } |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kAllocationSite = 0; |
| static const int kLeft = 1; |
| static const int kRight = 2; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOpWithAllocationSite); |
| DEFINE_HYDROGEN_CODE_STUB(BinaryOpWithAllocationSite, BinaryOpICStub); |
| }; |
| |
| |
| enum StringAddFlags { |
| // Omit both parameter checks. |
| STRING_ADD_CHECK_NONE = 0, |
| // Check left parameter. |
| STRING_ADD_CHECK_LEFT = 1 << 0, |
| // Check right parameter. |
| STRING_ADD_CHECK_RIGHT = 1 << 1, |
| // Check both parameters. |
| STRING_ADD_CHECK_BOTH = STRING_ADD_CHECK_LEFT | STRING_ADD_CHECK_RIGHT |
| }; |
| |
| |
| class StringAddStub FINAL : public HydrogenCodeStub { |
| public: |
| StringAddStub(Isolate* isolate, StringAddFlags flags, |
| PretenureFlag pretenure_flag) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(StringAddFlagsBits::encode(flags) | |
| PretenureFlagBits::encode(pretenure_flag)); |
| } |
| |
| StringAddFlags flags() const { |
| return StringAddFlagsBits::decode(sub_minor_key()); |
| } |
| |
| PretenureFlag pretenure_flag() const { |
| return PretenureFlagBits::decode(sub_minor_key()); |
| } |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kLeft = 0; |
| static const int kRight = 1; |
| |
| private: |
| class StringAddFlagsBits: public BitField<StringAddFlags, 0, 2> {}; |
| class PretenureFlagBits: public BitField<PretenureFlag, 2, 1> {}; |
| |
| virtual void PrintBaseName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(StringAdd); |
| DEFINE_HYDROGEN_CODE_STUB(StringAdd, HydrogenCodeStub); |
| }; |
| |
| |
| class CompareICStub : public PlatformCodeStub { |
| public: |
| CompareICStub(Isolate* isolate, Token::Value op, CompareICState::State left, |
| CompareICState::State right, CompareICState::State state) |
| : PlatformCodeStub(isolate) { |
| DCHECK(Token::IsCompareOp(op)); |
| minor_key_ = OpBits::encode(op - Token::EQ) | LeftStateBits::encode(left) | |
| RightStateBits::encode(right) | StateBits::encode(state); |
| } |
| |
| void set_known_map(Handle<Map> map) { known_map_ = map; } |
| |
| virtual InlineCacheState GetICState() const OVERRIDE; |
| |
| Token::Value op() const { |
| return static_cast<Token::Value>(Token::EQ + OpBits::decode(minor_key_)); |
| } |
| |
| CompareICState::State left() const { |
| return LeftStateBits::decode(minor_key_); |
| } |
| CompareICState::State right() const { |
| return RightStateBits::decode(minor_key_); |
| } |
| CompareICState::State state() const { return StateBits::decode(minor_key_); } |
| |
| private: |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::COMPARE_IC; } |
| |
| void GenerateSmis(MacroAssembler* masm); |
| void GenerateNumbers(MacroAssembler* masm); |
| void GenerateInternalizedStrings(MacroAssembler* masm); |
| void GenerateStrings(MacroAssembler* masm); |
| void GenerateUniqueNames(MacroAssembler* masm); |
| void GenerateObjects(MacroAssembler* masm); |
| void GenerateMiss(MacroAssembler* masm); |
| void GenerateKnownObjects(MacroAssembler* masm); |
| void GenerateGeneric(MacroAssembler* masm); |
| |
| bool strict() const { return op() == Token::EQ_STRICT; } |
| Condition GetCondition() const; |
| |
| virtual void AddToSpecialCache(Handle<Code> new_object) OVERRIDE; |
| virtual bool FindCodeInSpecialCache(Code** code_out) OVERRIDE; |
| virtual bool UseSpecialCache() OVERRIDE { |
| return state() == CompareICState::KNOWN_OBJECT; |
| } |
| |
| class OpBits : public BitField<int, 0, 3> {}; |
| class LeftStateBits : public BitField<CompareICState::State, 3, 4> {}; |
| class RightStateBits : public BitField<CompareICState::State, 7, 4> {}; |
| class StateBits : public BitField<CompareICState::State, 11, 4> {}; |
| |
| Handle<Map> known_map_; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(BinaryOp); |
| DEFINE_PLATFORM_CODE_STUB(CompareIC, PlatformCodeStub); |
| }; |
| |
| |
| class CompareNilICStub : public HydrogenCodeStub { |
| public: |
| Type* GetType(Zone* zone, Handle<Map> map = Handle<Map>()); |
| Type* GetInputType(Zone* zone, Handle<Map> map); |
| |
| CompareNilICStub(Isolate* isolate, NilValue nil) : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(NilValueBits::encode(nil)); |
| } |
| |
| CompareNilICStub(Isolate* isolate, ExtraICState ic_state, |
| InitializationState init_state = INITIALIZED) |
| : HydrogenCodeStub(isolate, init_state) { |
| set_sub_minor_key(ic_state); |
| } |
| |
| static Handle<Code> GetUninitialized(Isolate* isolate, |
| NilValue nil) { |
| return CompareNilICStub(isolate, nil, UNINITIALIZED).GetCode(); |
| } |
| |
| virtual InlineCacheState GetICState() const OVERRIDE { |
| State state = this->state(); |
| if (state.Contains(GENERIC)) { |
| return MEGAMORPHIC; |
| } else if (state.Contains(MONOMORPHIC_MAP)) { |
| return MONOMORPHIC; |
| } else { |
| return PREMONOMORPHIC; |
| } |
| } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::COMPARE_NIL_IC; |
| } |
| |
| virtual ExtraICState GetExtraICState() const OVERRIDE { |
| return sub_minor_key(); |
| } |
| |
| void UpdateStatus(Handle<Object> object); |
| |
| bool IsMonomorphic() const { return state().Contains(MONOMORPHIC_MAP); } |
| |
| NilValue nil_value() const { return NilValueBits::decode(sub_minor_key()); } |
| |
| void ClearState() { |
| set_sub_minor_key(TypesBits::update(sub_minor_key(), 0)); |
| } |
| |
| virtual void PrintState(std::ostream& os) const OVERRIDE; // NOLINT |
| virtual void PrintBaseName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| private: |
| CompareNilICStub(Isolate* isolate, NilValue nil, |
| InitializationState init_state) |
| : HydrogenCodeStub(isolate, init_state) { |
| set_sub_minor_key(NilValueBits::encode(nil)); |
| } |
| |
| enum CompareNilType { |
| UNDEFINED, |
| NULL_TYPE, |
| MONOMORPHIC_MAP, |
| GENERIC, |
| NUMBER_OF_TYPES |
| }; |
| |
| // At most 6 different types can be distinguished, because the Code object |
| // only has room for a single byte to hold a set and there are two more |
| // boolean flags we need to store. :-P |
| STATIC_ASSERT(NUMBER_OF_TYPES <= 6); |
| |
| class State : public EnumSet<CompareNilType, byte> { |
| public: |
| State() : EnumSet<CompareNilType, byte>(0) { } |
| explicit State(byte bits) : EnumSet<CompareNilType, byte>(bits) { } |
| }; |
| friend std::ostream& operator<<(std::ostream& os, const State& s); |
| |
| State state() const { return State(TypesBits::decode(sub_minor_key())); } |
| |
| class NilValueBits : public BitField<NilValue, 0, 1> {}; |
| class TypesBits : public BitField<byte, 1, NUMBER_OF_TYPES> {}; |
| |
| friend class CompareNilIC; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(CompareNil); |
| DEFINE_HYDROGEN_CODE_STUB(CompareNilIC, HydrogenCodeStub); |
| }; |
| |
| |
| std::ostream& operator<<(std::ostream& os, const CompareNilICStub::State& s); |
| |
| |
| class CEntryStub : public PlatformCodeStub { |
| public: |
| CEntryStub(Isolate* isolate, int result_size, |
| SaveFPRegsMode save_doubles = kDontSaveFPRegs) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = SaveDoublesBits::encode(save_doubles == kSaveFPRegs); |
| DCHECK(result_size == 1 || result_size == 2); |
| #ifdef _WIN64 |
| minor_key_ = ResultSizeBits::update(minor_key_, result_size); |
| #endif // _WIN64 |
| } |
| |
| // The version of this stub that doesn't save doubles is generated ahead of |
| // time, so it's OK to call it from other stubs that can't cope with GC during |
| // their code generation. On machines that always have gp registers (x64) we |
| // can generate both variants ahead of time. |
| static void GenerateAheadOfTime(Isolate* isolate); |
| |
| private: |
| bool save_doubles() const { return SaveDoublesBits::decode(minor_key_); } |
| #ifdef _WIN64 |
| int result_size() const { return ResultSizeBits::decode(minor_key_); } |
| #endif // _WIN64 |
| |
| bool NeedsImmovableCode() OVERRIDE; |
| |
| class SaveDoublesBits : public BitField<bool, 0, 1> {}; |
| class ResultSizeBits : public BitField<int, 1, 3> {}; |
| |
| DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| DEFINE_PLATFORM_CODE_STUB(CEntry, PlatformCodeStub); |
| }; |
| |
| |
| class JSEntryStub : public PlatformCodeStub { |
| public: |
| JSEntryStub(Isolate* isolate, StackFrame::Type type) |
| : PlatformCodeStub(isolate) { |
| DCHECK(type == StackFrame::ENTRY || type == StackFrame::ENTRY_CONSTRUCT); |
| minor_key_ = StackFrameTypeBits::encode(type); |
| } |
| |
| private: |
| virtual void FinishCode(Handle<Code> code) OVERRIDE; |
| |
| virtual void PrintName(std::ostream& os) const OVERRIDE { // NOLINT |
| os << (type() == StackFrame::ENTRY ? "JSEntryStub" |
| : "JSConstructEntryStub"); |
| } |
| |
| StackFrame::Type type() const { |
| return StackFrameTypeBits::decode(minor_key_); |
| } |
| |
| class StackFrameTypeBits : public BitField<StackFrame::Type, 0, 5> {}; |
| |
| int handler_offset_; |
| |
| DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| DEFINE_PLATFORM_CODE_STUB(JSEntry, PlatformCodeStub); |
| }; |
| |
| |
| class ArgumentsAccessStub: public PlatformCodeStub { |
| public: |
| enum Type { |
| READ_ELEMENT, |
| NEW_SLOPPY_FAST, |
| NEW_SLOPPY_SLOW, |
| NEW_STRICT |
| }; |
| |
| ArgumentsAccessStub(Isolate* isolate, Type type) : PlatformCodeStub(isolate) { |
| minor_key_ = TypeBits::encode(type); |
| } |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (type() == READ_ELEMENT) { |
| return ArgumentsAccessReadDescriptor(isolate()); |
| } |
| return ContextOnlyDescriptor(isolate()); |
| } |
| |
| private: |
| Type type() const { return TypeBits::decode(minor_key_); } |
| |
| void GenerateReadElement(MacroAssembler* masm); |
| void GenerateNewStrict(MacroAssembler* masm); |
| void GenerateNewSloppyFast(MacroAssembler* masm); |
| void GenerateNewSloppySlow(MacroAssembler* masm); |
| |
| virtual void PrintName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| class TypeBits : public BitField<Type, 0, 2> {}; |
| |
| DEFINE_PLATFORM_CODE_STUB(ArgumentsAccess, PlatformCodeStub); |
| }; |
| |
| |
| class RegExpExecStub: public PlatformCodeStub { |
| public: |
| explicit RegExpExecStub(Isolate* isolate) : PlatformCodeStub(isolate) { } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ContextOnly); |
| DEFINE_PLATFORM_CODE_STUB(RegExpExec, PlatformCodeStub); |
| }; |
| |
| |
| class RegExpConstructResultStub FINAL : public HydrogenCodeStub { |
| public: |
| explicit RegExpConstructResultStub(Isolate* isolate) |
| : HydrogenCodeStub(isolate) { } |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kLength = 0; |
| static const int kIndex = 1; |
| static const int kInput = 2; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(RegExpConstructResult); |
| DEFINE_HYDROGEN_CODE_STUB(RegExpConstructResult, HydrogenCodeStub); |
| }; |
| |
| |
| class CallFunctionStub: public PlatformCodeStub { |
| public: |
| CallFunctionStub(Isolate* isolate, int argc, CallFunctionFlags flags) |
| : PlatformCodeStub(isolate) { |
| DCHECK(argc >= 0 && argc <= Code::kMaxArguments); |
| minor_key_ = ArgcBits::encode(argc) | FlagBits::encode(flags); |
| } |
| |
| static int ExtractArgcFromMinorKey(int minor_key) { |
| return ArgcBits::decode(minor_key); |
| } |
| |
| private: |
| int argc() const { return ArgcBits::decode(minor_key_); } |
| int flags() const { return FlagBits::decode(minor_key_); } |
| |
| bool CallAsMethod() const { |
| return flags() == CALL_AS_METHOD || flags() == WRAP_AND_CALL; |
| } |
| |
| bool NeedsChecks() const { return flags() != WRAP_AND_CALL; } |
| |
| virtual void PrintName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| // Minor key encoding in 32 bits with Bitfield <Type, shift, size>. |
| class FlagBits : public BitField<CallFunctionFlags, 0, 2> {}; |
| class ArgcBits : public BitField<unsigned, 2, Code::kArgumentsBits> {}; |
| STATIC_ASSERT(Code::kArgumentsBits + 2 <= kStubMinorKeyBits); |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunction); |
| DEFINE_PLATFORM_CODE_STUB(CallFunction, PlatformCodeStub); |
| }; |
| |
| |
| class CallConstructStub: public PlatformCodeStub { |
| public: |
| CallConstructStub(Isolate* isolate, CallConstructorFlags flags) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = FlagBits::encode(flags); |
| } |
| |
| virtual void FinishCode(Handle<Code> code) OVERRIDE { |
| code->set_has_function_cache(RecordCallTarget()); |
| } |
| |
| private: |
| CallConstructorFlags flags() const { return FlagBits::decode(minor_key_); } |
| |
| bool RecordCallTarget() const { |
| return (flags() & RECORD_CONSTRUCTOR_TARGET) != 0; |
| } |
| |
| virtual void PrintName(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| class FlagBits : public BitField<CallConstructorFlags, 0, 1> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(CallConstruct); |
| DEFINE_PLATFORM_CODE_STUB(CallConstruct, PlatformCodeStub); |
| }; |
| |
| |
| enum StringIndexFlags { |
| // Accepts smis or heap numbers. |
| STRING_INDEX_IS_NUMBER, |
| |
| // Accepts smis or heap numbers that are valid array indices |
| // (ECMA-262 15.4). Invalid indices are reported as being out of |
| // range. |
| STRING_INDEX_IS_ARRAY_INDEX |
| }; |
| |
| |
| enum ReceiverCheckMode { |
| // We don't know anything about the receiver. |
| RECEIVER_IS_UNKNOWN, |
| |
| // We know the receiver is a string. |
| RECEIVER_IS_STRING |
| }; |
| |
| |
| // Generates code implementing String.prototype.charCodeAt. |
| // |
| // Only supports the case when the receiver is a string and the index |
| // is a number (smi or heap number) that is a valid index into the |
| // string. Additional index constraints are specified by the |
| // flags. Otherwise, bails out to the provided labels. |
| // |
| // Register usage: |object| may be changed to another string in a way |
| // that doesn't affect charCodeAt/charAt semantics, |index| is |
| // preserved, |scratch| and |result| are clobbered. |
| class StringCharCodeAtGenerator { |
| public: |
| StringCharCodeAtGenerator(Register object, Register index, Register result, |
| Label* receiver_not_string, Label* index_not_number, |
| Label* index_out_of_range, |
| StringIndexFlags index_flags, |
| ReceiverCheckMode check_mode = RECEIVER_IS_UNKNOWN) |
| : object_(object), |
| index_(index), |
| result_(result), |
| receiver_not_string_(receiver_not_string), |
| index_not_number_(index_not_number), |
| index_out_of_range_(index_out_of_range), |
| index_flags_(index_flags), |
| check_mode_(check_mode) { |
| DCHECK(!result_.is(object_)); |
| DCHECK(!result_.is(index_)); |
| } |
| |
| // Generates the fast case code. On the fallthrough path |result| |
| // register contains the result. |
| void GenerateFast(MacroAssembler* masm); |
| |
| // Generates the slow case code. Must not be naturally |
| // reachable. Expected to be put after a ret instruction (e.g., in |
| // deferred code). Always jumps back to the fast case. |
| void GenerateSlow(MacroAssembler* masm, |
| const RuntimeCallHelper& call_helper); |
| |
| // Skip handling slow case and directly jump to bailout. |
| void SkipSlow(MacroAssembler* masm, Label* bailout) { |
| masm->bind(&index_not_smi_); |
| masm->bind(&call_runtime_); |
| masm->jmp(bailout); |
| } |
| |
| private: |
| Register object_; |
| Register index_; |
| Register result_; |
| |
| Label* receiver_not_string_; |
| Label* index_not_number_; |
| Label* index_out_of_range_; |
| |
| StringIndexFlags index_flags_; |
| ReceiverCheckMode check_mode_; |
| |
| Label call_runtime_; |
| Label index_not_smi_; |
| Label got_smi_index_; |
| Label exit_; |
| |
| DISALLOW_COPY_AND_ASSIGN(StringCharCodeAtGenerator); |
| }; |
| |
| |
| // Generates code for creating a one-char string from a char code. |
| class StringCharFromCodeGenerator { |
| public: |
| StringCharFromCodeGenerator(Register code, |
| Register result) |
| : code_(code), |
| result_(result) { |
| DCHECK(!code_.is(result_)); |
| } |
| |
| // Generates the fast case code. On the fallthrough path |result| |
| // register contains the result. |
| void GenerateFast(MacroAssembler* masm); |
| |
| // Generates the slow case code. Must not be naturally |
| // reachable. Expected to be put after a ret instruction (e.g., in |
| // deferred code). Always jumps back to the fast case. |
| void GenerateSlow(MacroAssembler* masm, |
| const RuntimeCallHelper& call_helper); |
| |
| // Skip handling slow case and directly jump to bailout. |
| void SkipSlow(MacroAssembler* masm, Label* bailout) { |
| masm->bind(&slow_case_); |
| masm->jmp(bailout); |
| } |
| |
| private: |
| Register code_; |
| Register result_; |
| |
| Label slow_case_; |
| Label exit_; |
| |
| DISALLOW_COPY_AND_ASSIGN(StringCharFromCodeGenerator); |
| }; |
| |
| |
| // Generates code implementing String.prototype.charAt. |
| // |
| // Only supports the case when the receiver is a string and the index |
| // is a number (smi or heap number) that is a valid index into the |
| // string. Additional index constraints are specified by the |
| // flags. Otherwise, bails out to the provided labels. |
| // |
| // Register usage: |object| may be changed to another string in a way |
| // that doesn't affect charCodeAt/charAt semantics, |index| is |
| // preserved, |scratch1|, |scratch2|, and |result| are clobbered. |
| class StringCharAtGenerator { |
| public: |
| StringCharAtGenerator(Register object, Register index, Register scratch, |
| Register result, Label* receiver_not_string, |
| Label* index_not_number, Label* index_out_of_range, |
| StringIndexFlags index_flags, |
| ReceiverCheckMode check_mode = RECEIVER_IS_UNKNOWN) |
| : char_code_at_generator_(object, index, scratch, receiver_not_string, |
| index_not_number, index_out_of_range, |
| index_flags, check_mode), |
| char_from_code_generator_(scratch, result) {} |
| |
| // Generates the fast case code. On the fallthrough path |result| |
| // register contains the result. |
| void GenerateFast(MacroAssembler* masm) { |
| char_code_at_generator_.GenerateFast(masm); |
| char_from_code_generator_.GenerateFast(masm); |
| } |
| |
| // Generates the slow case code. Must not be naturally |
| // reachable. Expected to be put after a ret instruction (e.g., in |
| // deferred code). Always jumps back to the fast case. |
| void GenerateSlow(MacroAssembler* masm, |
| const RuntimeCallHelper& call_helper) { |
| char_code_at_generator_.GenerateSlow(masm, call_helper); |
| char_from_code_generator_.GenerateSlow(masm, call_helper); |
| } |
| |
| // Skip handling slow case and directly jump to bailout. |
| void SkipSlow(MacroAssembler* masm, Label* bailout) { |
| char_code_at_generator_.SkipSlow(masm, bailout); |
| char_from_code_generator_.SkipSlow(masm, bailout); |
| } |
| |
| private: |
| StringCharCodeAtGenerator char_code_at_generator_; |
| StringCharFromCodeGenerator char_from_code_generator_; |
| |
| DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator); |
| }; |
| |
| |
| class LoadDictionaryElementStub : public HydrogenCodeStub { |
| public: |
| explicit LoadDictionaryElementStub(Isolate* isolate) |
| : HydrogenCodeStub(isolate) {} |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (FLAG_vector_ics) { |
| return VectorLoadICDescriptor(isolate()); |
| } |
| return LoadDescriptor(isolate()); |
| } |
| |
| DEFINE_HYDROGEN_CODE_STUB(LoadDictionaryElement, HydrogenCodeStub); |
| }; |
| |
| |
| class KeyedLoadGenericStub : public HydrogenCodeStub { |
| public: |
| explicit KeyedLoadGenericStub(Isolate* isolate) : HydrogenCodeStub(isolate) {} |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::KEYED_LOAD_IC; |
| } |
| virtual InlineCacheState GetICState() const OVERRIDE { return GENERIC; } |
| |
| // Since KeyedLoadGeneric stub doesn't miss (simply calls runtime), it |
| // doesn't need to use the VectorLoadICDescriptor for the case when |
| // flag --vector-ics is true. |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(Load); |
| |
| DEFINE_HYDROGEN_CODE_STUB(KeyedLoadGeneric, HydrogenCodeStub); |
| }; |
| |
| |
| class LoadICTrampolineStub : public PlatformCodeStub { |
| public: |
| LoadICTrampolineStub(Isolate* isolate, const LoadICState& state) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = state.GetExtraICState(); |
| } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; } |
| |
| virtual InlineCacheState GetICState() const FINAL OVERRIDE { return DEFAULT; } |
| |
| virtual ExtraICState GetExtraICState() const FINAL OVERRIDE { |
| return static_cast<ExtraICState>(minor_key_); |
| } |
| |
| private: |
| LoadICState state() const { |
| return LoadICState(static_cast<ExtraICState>(minor_key_)); |
| } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(VectorLoadICTrampoline); |
| DEFINE_PLATFORM_CODE_STUB(LoadICTrampoline, PlatformCodeStub); |
| }; |
| |
| |
| class KeyedLoadICTrampolineStub : public LoadICTrampolineStub { |
| public: |
| explicit KeyedLoadICTrampolineStub(Isolate* isolate) |
| : LoadICTrampolineStub(isolate, LoadICState(0)) {} |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::KEYED_LOAD_IC; |
| } |
| |
| DEFINE_PLATFORM_CODE_STUB(KeyedLoadICTrampoline, LoadICTrampolineStub); |
| }; |
| |
| |
| class MegamorphicLoadStub : public HydrogenCodeStub { |
| public: |
| MegamorphicLoadStub(Isolate* isolate, const LoadICState& state) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(state.GetExtraICState()); |
| } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; } |
| |
| virtual InlineCacheState GetICState() const FINAL OVERRIDE { |
| return MEGAMORPHIC; |
| } |
| |
| virtual ExtraICState GetExtraICState() const FINAL OVERRIDE { |
| return static_cast<ExtraICState>(sub_minor_key()); |
| } |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (FLAG_vector_ics) { |
| return VectorLoadICDescriptor(isolate()); |
| } |
| return LoadDescriptor(isolate()); |
| } |
| |
| DEFINE_HYDROGEN_CODE_STUB(MegamorphicLoad, HydrogenCodeStub); |
| }; |
| |
| |
| class VectorLoadStub : public HydrogenCodeStub { |
| public: |
| explicit VectorLoadStub(Isolate* isolate, const LoadICState& state) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(state.GetExtraICState()); |
| } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; } |
| |
| virtual InlineCacheState GetICState() const FINAL OVERRIDE { return DEFAULT; } |
| |
| virtual ExtraICState GetExtraICState() const FINAL OVERRIDE { |
| return static_cast<ExtraICState>(sub_minor_key()); |
| } |
| |
| private: |
| LoadICState state() const { return LoadICState(GetExtraICState()); } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(VectorLoadIC); |
| DEFINE_HYDROGEN_CODE_STUB(VectorLoad, HydrogenCodeStub); |
| }; |
| |
| |
| class VectorKeyedLoadStub : public VectorLoadStub { |
| public: |
| explicit VectorKeyedLoadStub(Isolate* isolate) |
| : VectorLoadStub(isolate, LoadICState(0)) {} |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::KEYED_LOAD_IC; |
| } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(VectorLoadIC); |
| DEFINE_HYDROGEN_CODE_STUB(VectorKeyedLoad, VectorLoadStub); |
| }; |
| |
| |
| class DoubleToIStub : public PlatformCodeStub { |
| public: |
| DoubleToIStub(Isolate* isolate, Register source, Register destination, |
| int offset, bool is_truncating, bool skip_fastpath = false) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = SourceRegisterBits::encode(source.code()) | |
| DestinationRegisterBits::encode(destination.code()) | |
| OffsetBits::encode(offset) | |
| IsTruncatingBits::encode(is_truncating) | |
| SkipFastPathBits::encode(skip_fastpath) | |
| SSE3Bits::encode(CpuFeatures::IsSupported(SSE3) ? 1 : 0); |
| } |
| |
| virtual bool SometimesSetsUpAFrame() OVERRIDE { return false; } |
| |
| private: |
| Register source() const { |
| return Register::from_code(SourceRegisterBits::decode(minor_key_)); |
| } |
| Register destination() const { |
| return Register::from_code(DestinationRegisterBits::decode(minor_key_)); |
| } |
| bool is_truncating() const { return IsTruncatingBits::decode(minor_key_); } |
| bool skip_fastpath() const { return SkipFastPathBits::decode(minor_key_); } |
| int offset() const { return OffsetBits::decode(minor_key_); } |
| |
| static const int kBitsPerRegisterNumber = 6; |
| STATIC_ASSERT((1L << kBitsPerRegisterNumber) >= Register::kNumRegisters); |
| class SourceRegisterBits: |
| public BitField<int, 0, kBitsPerRegisterNumber> {}; // NOLINT |
| class DestinationRegisterBits: |
| public BitField<int, kBitsPerRegisterNumber, |
| kBitsPerRegisterNumber> {}; // NOLINT |
| class IsTruncatingBits: |
| public BitField<bool, 2 * kBitsPerRegisterNumber, 1> {}; // NOLINT |
| class OffsetBits: |
| public BitField<int, 2 * kBitsPerRegisterNumber + 1, 3> {}; // NOLINT |
| class SkipFastPathBits: |
| public BitField<int, 2 * kBitsPerRegisterNumber + 4, 1> {}; // NOLINT |
| class SSE3Bits: |
| public BitField<int, 2 * kBitsPerRegisterNumber + 5, 1> {}; // NOLINT |
| |
| DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| DEFINE_PLATFORM_CODE_STUB(DoubleToI, PlatformCodeStub); |
| }; |
| |
| |
| class ScriptContextFieldStub : public HandlerStub { |
| public: |
| ScriptContextFieldStub(Isolate* isolate, |
| const ScriptContextTable::LookupResult* lookup_result) |
| : HandlerStub(isolate) { |
| DCHECK(Accepted(lookup_result)); |
| set_sub_minor_key(ContextIndexBits::encode(lookup_result->context_index) | |
| SlotIndexBits::encode(lookup_result->slot_index)); |
| } |
| |
| int context_index() const { |
| return ContextIndexBits::decode(sub_minor_key()); |
| } |
| |
| int slot_index() const { return SlotIndexBits::decode(sub_minor_key()); } |
| |
| static bool Accepted(const ScriptContextTable::LookupResult* lookup_result) { |
| return ContextIndexBits::is_valid(lookup_result->context_index) && |
| SlotIndexBits::is_valid(lookup_result->slot_index); |
| } |
| |
| private: |
| static const int kContextIndexBits = 13; |
| static const int kSlotIndexBits = 13; |
| class ContextIndexBits : public BitField<int, 0, kContextIndexBits> {}; |
| class SlotIndexBits |
| : public BitField<int, kContextIndexBits, kSlotIndexBits> {}; |
| |
| virtual Code::StubType GetStubType() OVERRIDE { return Code::FAST; } |
| |
| DEFINE_CODE_STUB_BASE(ScriptContextFieldStub, HandlerStub); |
| }; |
| |
| |
| class LoadScriptContextFieldStub : public ScriptContextFieldStub { |
| public: |
| LoadScriptContextFieldStub( |
| Isolate* isolate, const ScriptContextTable::LookupResult* lookup_result) |
| : ScriptContextFieldStub(isolate, lookup_result) {} |
| |
| private: |
| virtual Code::Kind kind() const OVERRIDE { return Code::LOAD_IC; } |
| |
| DEFINE_HANDLER_CODE_STUB(LoadScriptContextField, ScriptContextFieldStub); |
| }; |
| |
| |
| class StoreScriptContextFieldStub : public ScriptContextFieldStub { |
| public: |
| StoreScriptContextFieldStub( |
| Isolate* isolate, const ScriptContextTable::LookupResult* lookup_result) |
| : ScriptContextFieldStub(isolate, lookup_result) {} |
| |
| private: |
| virtual Code::Kind kind() const OVERRIDE { return Code::STORE_IC; } |
| |
| DEFINE_HANDLER_CODE_STUB(StoreScriptContextField, ScriptContextFieldStub); |
| }; |
| |
| |
| class LoadFastElementStub : public HydrogenCodeStub { |
| public: |
| LoadFastElementStub(Isolate* isolate, bool is_js_array, |
| ElementsKind elements_kind) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(ElementsKindBits::encode(elements_kind) | |
| IsJSArrayBits::encode(is_js_array)); |
| } |
| |
| bool is_js_array() const { return IsJSArrayBits::decode(sub_minor_key()); } |
| |
| ElementsKind elements_kind() const { |
| return ElementsKindBits::decode(sub_minor_key()); |
| } |
| |
| private: |
| class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| class IsJSArrayBits: public BitField<bool, 8, 1> {}; |
| |
| virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { |
| if (FLAG_vector_ics) { |
| return VectorLoadICDescriptor(isolate()); |
| } |
| return LoadDescriptor(isolate()); |
| } |
| |
| DEFINE_HYDROGEN_CODE_STUB(LoadFastElement, HydrogenCodeStub); |
| }; |
| |
| |
| class StoreFastElementStub : public HydrogenCodeStub { |
| public: |
| StoreFastElementStub(Isolate* isolate, bool is_js_array, |
| ElementsKind elements_kind, KeyedAccessStoreMode mode) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(ElementsKindBits::encode(elements_kind) | |
| IsJSArrayBits::encode(is_js_array) | |
| StoreModeBits::encode(mode)); |
| } |
| |
| bool is_js_array() const { return IsJSArrayBits::decode(sub_minor_key()); } |
| |
| ElementsKind elements_kind() const { |
| return ElementsKindBits::decode(sub_minor_key()); |
| } |
| |
| KeyedAccessStoreMode store_mode() const { |
| return StoreModeBits::decode(sub_minor_key()); |
| } |
| |
| private: |
| class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| class StoreModeBits: public BitField<KeyedAccessStoreMode, 8, 4> {}; |
| class IsJSArrayBits: public BitField<bool, 12, 1> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(Store); |
| DEFINE_HYDROGEN_CODE_STUB(StoreFastElement, HydrogenCodeStub); |
| }; |
| |
| |
| class TransitionElementsKindStub : public HydrogenCodeStub { |
| public: |
| TransitionElementsKindStub(Isolate* isolate, |
| ElementsKind from_kind, |
| ElementsKind to_kind, |
| bool is_js_array) : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(FromKindBits::encode(from_kind) | |
| ToKindBits::encode(to_kind) | |
| IsJSArrayBits::encode(is_js_array)); |
| } |
| |
| ElementsKind from_kind() const { |
| return FromKindBits::decode(sub_minor_key()); |
| } |
| |
| ElementsKind to_kind() const { return ToKindBits::decode(sub_minor_key()); } |
| |
| bool is_js_array() const { return IsJSArrayBits::decode(sub_minor_key()); } |
| |
| private: |
| class FromKindBits: public BitField<ElementsKind, 8, 8> {}; |
| class ToKindBits: public BitField<ElementsKind, 0, 8> {}; |
| class IsJSArrayBits: public BitField<bool, 16, 1> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(TransitionElementsKind); |
| DEFINE_HYDROGEN_CODE_STUB(TransitionElementsKind, HydrogenCodeStub); |
| }; |
| |
| |
| class AllocateHeapNumberStub FINAL : public HydrogenCodeStub { |
| public: |
| explicit AllocateHeapNumberStub(Isolate* isolate) |
| : HydrogenCodeStub(isolate) {} |
| |
| private: |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(AllocateHeapNumber); |
| DEFINE_HYDROGEN_CODE_STUB(AllocateHeapNumber, HydrogenCodeStub); |
| }; |
| |
| |
| class ArrayConstructorStubBase : public HydrogenCodeStub { |
| public: |
| ArrayConstructorStubBase(Isolate* isolate, |
| ElementsKind kind, |
| AllocationSiteOverrideMode override_mode) |
| : HydrogenCodeStub(isolate) { |
| // It only makes sense to override local allocation site behavior |
| // if there is a difference between the global allocation site policy |
| // for an ElementsKind and the desired usage of the stub. |
| DCHECK(override_mode != DISABLE_ALLOCATION_SITES || |
| AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE); |
| set_sub_minor_key(ElementsKindBits::encode(kind) | |
| AllocationSiteOverrideModeBits::encode(override_mode)); |
| } |
| |
| ElementsKind elements_kind() const { |
| return ElementsKindBits::decode(sub_minor_key()); |
| } |
| |
| AllocationSiteOverrideMode override_mode() const { |
| return AllocationSiteOverrideModeBits::decode(sub_minor_key()); |
| } |
| |
| static void GenerateStubsAheadOfTime(Isolate* isolate); |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kConstructor = 0; |
| static const int kAllocationSite = 1; |
| |
| protected: |
| std::ostream& BasePrintName(std::ostream& os, |
| const char* name) const; // NOLINT |
| |
| private: |
| // Ensure data fits within available bits. |
| STATIC_ASSERT(LAST_ALLOCATION_SITE_OVERRIDE_MODE == 1); |
| |
| class ElementsKindBits: public BitField<ElementsKind, 0, 8> {}; |
| class AllocationSiteOverrideModeBits: public |
| BitField<AllocationSiteOverrideMode, 8, 1> {}; // NOLINT |
| |
| DEFINE_CODE_STUB_BASE(ArrayConstructorStubBase, HydrogenCodeStub); |
| }; |
| |
| |
| class ArrayNoArgumentConstructorStub : public ArrayConstructorStubBase { |
| public: |
| ArrayNoArgumentConstructorStub( |
| Isolate* isolate, |
| ElementsKind kind, |
| AllocationSiteOverrideMode override_mode = DONT_OVERRIDE) |
| : ArrayConstructorStubBase(isolate, kind, override_mode) { |
| } |
| |
| private: |
| virtual void PrintName(std::ostream& os) const OVERRIDE { // NOLINT |
| BasePrintName(os, "ArrayNoArgumentConstructorStub"); |
| } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ArrayConstructorConstantArgCount); |
| DEFINE_HYDROGEN_CODE_STUB(ArrayNoArgumentConstructor, |
| ArrayConstructorStubBase); |
| }; |
| |
| |
| class ArraySingleArgumentConstructorStub : public ArrayConstructorStubBase { |
| public: |
| ArraySingleArgumentConstructorStub( |
| Isolate* isolate, |
| ElementsKind kind, |
| AllocationSiteOverrideMode override_mode = DONT_OVERRIDE) |
| : ArrayConstructorStubBase(isolate, kind, override_mode) { |
| } |
| |
| private: |
| virtual void PrintName(std::ostream& os) const OVERRIDE { // NOLINT |
| BasePrintName(os, "ArraySingleArgumentConstructorStub"); |
| } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ArrayConstructor); |
| DEFINE_HYDROGEN_CODE_STUB(ArraySingleArgumentConstructor, |
| ArrayConstructorStubBase); |
| }; |
| |
| |
| class ArrayNArgumentsConstructorStub : public ArrayConstructorStubBase { |
| public: |
| ArrayNArgumentsConstructorStub( |
| Isolate* isolate, |
| ElementsKind kind, |
| AllocationSiteOverrideMode override_mode = DONT_OVERRIDE) |
| : ArrayConstructorStubBase(isolate, kind, override_mode) { |
| } |
| |
| private: |
| virtual void PrintName(std::ostream& os) const OVERRIDE { // NOLINT |
| BasePrintName(os, "ArrayNArgumentsConstructorStub"); |
| } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ArrayConstructor); |
| DEFINE_HYDROGEN_CODE_STUB(ArrayNArgumentsConstructor, |
| ArrayConstructorStubBase); |
| }; |
| |
| |
| class InternalArrayConstructorStubBase : public HydrogenCodeStub { |
| public: |
| InternalArrayConstructorStubBase(Isolate* isolate, ElementsKind kind) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(ElementsKindBits::encode(kind)); |
| } |
| |
| static void GenerateStubsAheadOfTime(Isolate* isolate); |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| static const int kConstructor = 0; |
| |
| ElementsKind elements_kind() const { |
| return ElementsKindBits::decode(sub_minor_key()); |
| } |
| |
| private: |
| class ElementsKindBits : public BitField<ElementsKind, 0, 8> {}; |
| |
| DEFINE_CODE_STUB_BASE(InternalArrayConstructorStubBase, HydrogenCodeStub); |
| }; |
| |
| |
| class InternalArrayNoArgumentConstructorStub : public |
| InternalArrayConstructorStubBase { |
| public: |
| InternalArrayNoArgumentConstructorStub(Isolate* isolate, |
| ElementsKind kind) |
| : InternalArrayConstructorStubBase(isolate, kind) { } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(InternalArrayConstructorConstantArgCount); |
| DEFINE_HYDROGEN_CODE_STUB(InternalArrayNoArgumentConstructor, |
| InternalArrayConstructorStubBase); |
| }; |
| |
| |
| class InternalArraySingleArgumentConstructorStub : public |
| InternalArrayConstructorStubBase { |
| public: |
| InternalArraySingleArgumentConstructorStub(Isolate* isolate, |
| ElementsKind kind) |
| : InternalArrayConstructorStubBase(isolate, kind) { } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(InternalArrayConstructor); |
| DEFINE_HYDROGEN_CODE_STUB(InternalArraySingleArgumentConstructor, |
| InternalArrayConstructorStubBase); |
| }; |
| |
| |
| class InternalArrayNArgumentsConstructorStub : public |
| InternalArrayConstructorStubBase { |
| public: |
| InternalArrayNArgumentsConstructorStub(Isolate* isolate, ElementsKind kind) |
| : InternalArrayConstructorStubBase(isolate, kind) { } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(InternalArrayConstructor); |
| DEFINE_HYDROGEN_CODE_STUB(InternalArrayNArgumentsConstructor, |
| InternalArrayConstructorStubBase); |
| }; |
| |
| |
| class StoreElementStub : public PlatformCodeStub { |
| public: |
| StoreElementStub(Isolate* isolate, ElementsKind elements_kind) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = ElementsKindBits::encode(elements_kind); |
| } |
| |
| private: |
| ElementsKind elements_kind() const { |
| return ElementsKindBits::decode(minor_key_); |
| } |
| |
| class ElementsKindBits : public BitField<ElementsKind, 0, 8> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(Store); |
| DEFINE_PLATFORM_CODE_STUB(StoreElement, PlatformCodeStub); |
| }; |
| |
| |
| class ToBooleanStub: public HydrogenCodeStub { |
| public: |
| enum Type { |
| UNDEFINED, |
| BOOLEAN, |
| NULL_TYPE, |
| SMI, |
| SPEC_OBJECT, |
| STRING, |
| SYMBOL, |
| HEAP_NUMBER, |
| NUMBER_OF_TYPES |
| }; |
| |
| enum ResultMode { |
| RESULT_AS_SMI, // For Smi(1) on truthy value, Smi(0) otherwise. |
| RESULT_AS_ODDBALL, // For {true} on truthy value, {false} otherwise. |
| RESULT_AS_INVERSE_ODDBALL // For {false} on truthy value, {true} otherwise. |
| }; |
| |
| // At most 8 different types can be distinguished, because the Code object |
| // only has room for a single byte to hold a set of these types. :-P |
| STATIC_ASSERT(NUMBER_OF_TYPES <= 8); |
| |
| class Types : public EnumSet<Type, byte> { |
| public: |
| Types() : EnumSet<Type, byte>(0) {} |
| explicit Types(byte bits) : EnumSet<Type, byte>(bits) {} |
| |
| byte ToByte() const { return ToIntegral(); } |
| bool UpdateStatus(Handle<Object> object); |
| bool NeedsMap() const; |
| bool CanBeUndetectable() const; |
| bool IsGeneric() const { return ToIntegral() == Generic().ToIntegral(); } |
| |
| static Types Generic() { return Types((1 << NUMBER_OF_TYPES) - 1); } |
| }; |
| |
| ToBooleanStub(Isolate* isolate, ResultMode mode, Types types = Types()) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(TypesBits::encode(types.ToByte()) | |
| ResultModeBits::encode(mode)); |
| } |
| |
| ToBooleanStub(Isolate* isolate, ExtraICState state) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(TypesBits::encode(static_cast<byte>(state)) | |
| ResultModeBits::encode(RESULT_AS_SMI)); |
| } |
| |
| bool UpdateStatus(Handle<Object> object); |
| Types types() const { return Types(TypesBits::decode(sub_minor_key())); } |
| ResultMode mode() const { return ResultModeBits::decode(sub_minor_key()); } |
| |
| virtual Code::Kind GetCodeKind() const OVERRIDE { |
| return Code::TO_BOOLEAN_IC; |
| } |
| virtual void PrintState(std::ostream& os) const OVERRIDE; // NOLINT |
| |
| virtual bool SometimesSetsUpAFrame() OVERRIDE { return false; } |
| |
| static Handle<Code> GetUninitialized(Isolate* isolate) { |
| return ToBooleanStub(isolate, UNINITIALIZED).GetCode(); |
| } |
| |
| virtual ExtraICState GetExtraICState() const OVERRIDE { |
| return types().ToIntegral(); |
| } |
| |
| virtual InlineCacheState GetICState() const OVERRIDE { |
| if (types().IsEmpty()) { |
| return ::v8::internal::UNINITIALIZED; |
| } else { |
| return MONOMORPHIC; |
| } |
| } |
| |
| private: |
| ToBooleanStub(Isolate* isolate, InitializationState init_state) |
| : HydrogenCodeStub(isolate, init_state) { |
| set_sub_minor_key(ResultModeBits::encode(RESULT_AS_SMI)); |
| } |
| |
| class TypesBits : public BitField<byte, 0, NUMBER_OF_TYPES> {}; |
| class ResultModeBits : public BitField<ResultMode, NUMBER_OF_TYPES, 2> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ToBoolean); |
| DEFINE_HYDROGEN_CODE_STUB(ToBoolean, HydrogenCodeStub); |
| }; |
| |
| |
| std::ostream& operator<<(std::ostream& os, const ToBooleanStub::Types& t); |
| |
| |
| class ElementsTransitionAndStoreStub : public HydrogenCodeStub { |
| public: |
| ElementsTransitionAndStoreStub(Isolate* isolate, ElementsKind from_kind, |
| ElementsKind to_kind, bool is_jsarray, |
| KeyedAccessStoreMode store_mode) |
| : HydrogenCodeStub(isolate) { |
| set_sub_minor_key(FromBits::encode(from_kind) | ToBits::encode(to_kind) | |
| IsJSArrayBits::encode(is_jsarray) | |
| StoreModeBits::encode(store_mode)); |
| } |
| |
| ElementsKind from_kind() const { return FromBits::decode(sub_minor_key()); } |
| ElementsKind to_kind() const { return ToBits::decode(sub_minor_key()); } |
| bool is_jsarray() const { return IsJSArrayBits::decode(sub_minor_key()); } |
| KeyedAccessStoreMode store_mode() const { |
| return StoreModeBits::decode(sub_minor_key()); |
| } |
| |
| // Parameters accessed via CodeStubGraphBuilder::GetParameter() |
| enum ParameterIndices { |
| kValueIndex, |
| kMapIndex, |
| kKeyIndex, |
| kObjectIndex, |
| kParameterCount |
| }; |
| |
| static const Register ValueRegister() { |
| return ElementTransitionAndStoreDescriptor::ValueRegister(); |
| } |
| static const Register MapRegister() { |
| return ElementTransitionAndStoreDescriptor::MapRegister(); |
| } |
| static const Register KeyRegister() { |
| return ElementTransitionAndStoreDescriptor::NameRegister(); |
| } |
| static const Register ObjectRegister() { |
| return ElementTransitionAndStoreDescriptor::ReceiverRegister(); |
| } |
| |
| private: |
| class FromBits : public BitField<ElementsKind, 0, 8> {}; |
| class ToBits : public BitField<ElementsKind, 8, 8> {}; |
| class IsJSArrayBits : public BitField<bool, 16, 1> {}; |
| class StoreModeBits : public BitField<KeyedAccessStoreMode, 17, 4> {}; |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ElementTransitionAndStore); |
| DEFINE_HYDROGEN_CODE_STUB(ElementsTransitionAndStore, HydrogenCodeStub); |
| }; |
| |
| |
| class StoreArrayLiteralElementStub : public PlatformCodeStub { |
| public: |
| explicit StoreArrayLiteralElementStub(Isolate* isolate) |
| : PlatformCodeStub(isolate) { } |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(StoreArrayLiteralElement); |
| DEFINE_PLATFORM_CODE_STUB(StoreArrayLiteralElement, PlatformCodeStub); |
| }; |
| |
| |
| class StubFailureTrampolineStub : public PlatformCodeStub { |
| public: |
| StubFailureTrampolineStub(Isolate* isolate, StubFunctionMode function_mode) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = FunctionModeField::encode(function_mode); |
| } |
| |
| static void GenerateAheadOfTime(Isolate* isolate); |
| |
| private: |
| StubFunctionMode function_mode() const { |
| return FunctionModeField::decode(minor_key_); |
| } |
| |
| class FunctionModeField : public BitField<StubFunctionMode, 0, 1> {}; |
| |
| DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| DEFINE_PLATFORM_CODE_STUB(StubFailureTrampoline, PlatformCodeStub); |
| }; |
| |
| |
| class ProfileEntryHookStub : public PlatformCodeStub { |
| public: |
| explicit ProfileEntryHookStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
| |
| // The profile entry hook function is not allowed to cause a GC. |
| virtual bool SometimesSetsUpAFrame() OVERRIDE { return false; } |
| |
| // Generates a call to the entry hook if it's enabled. |
| static void MaybeCallEntryHook(MacroAssembler* masm); |
| |
| private: |
| static void EntryHookTrampoline(intptr_t function, |
| intptr_t stack_pointer, |
| Isolate* isolate); |
| |
| // ProfileEntryHookStub is called at the start of a function, so it has the |
| // same register set. |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunction) |
| DEFINE_PLATFORM_CODE_STUB(ProfileEntryHook, PlatformCodeStub); |
| }; |
| |
| |
| class StoreBufferOverflowStub : public PlatformCodeStub { |
| public: |
| StoreBufferOverflowStub(Isolate* isolate, SaveFPRegsMode save_fp) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = SaveDoublesBits::encode(save_fp == kSaveFPRegs); |
| } |
| |
| static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); |
| virtual bool SometimesSetsUpAFrame() OVERRIDE { return false; } |
| |
| private: |
| bool save_doubles() const { return SaveDoublesBits::decode(minor_key_); } |
| |
| class SaveDoublesBits : public BitField<bool, 0, 1> {}; |
| |
| DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR(); |
| DEFINE_PLATFORM_CODE_STUB(StoreBufferOverflow, PlatformCodeStub); |
| }; |
| |
| |
| class SubStringStub : public PlatformCodeStub { |
| public: |
| explicit SubStringStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ContextOnly); |
| DEFINE_PLATFORM_CODE_STUB(SubString, PlatformCodeStub); |
| }; |
| |
| |
| class ToNumberStub FINAL : public PlatformCodeStub { |
| public: |
| explicit ToNumberStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ToNumber); |
| DEFINE_PLATFORM_CODE_STUB(ToNumber, PlatformCodeStub); |
| }; |
| |
| |
| class StringCompareStub : public PlatformCodeStub { |
| public: |
| explicit StringCompareStub(Isolate* isolate) : PlatformCodeStub(isolate) {} |
| |
| DEFINE_CALL_INTERFACE_DESCRIPTOR(ContextOnly); |
| DEFINE_PLATFORM_CODE_STUB(StringCompare, PlatformCodeStub); |
| }; |
| |
| |
| #undef DEFINE_CALL_INTERFACE_DESCRIPTOR |
| #undef DEFINE_PLATFORM_CODE_STUB |
| #undef DEFINE_HANDLER_CODE_STUB |
| #undef DEFINE_HYDROGEN_CODE_STUB |
| #undef DEFINE_CODE_STUB |
| #undef DEFINE_CODE_STUB_BASE |
| } } // namespace v8::internal |
| |
| #endif // V8_CODE_STUBS_H_ |