6ad87e4f86
This CL adds errors for illegal references which occur inside object literal methods inside computed properrty names. BUG=v8:3948,v8:3956 LOG=N Review URL: https://codereview.chromium.org/994043003 Cr-Commit-Position: refs/heads/master@{#27118}
2742 lines
87 KiB
C++
2742 lines
87 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_CODE_STUBS_H_
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#define V8_CODE_STUBS_H_
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#include "src/allocation.h"
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#include "src/assembler.h"
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#include "src/codegen.h"
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#include "src/globals.h"
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#include "src/ic/ic-state.h"
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#include "src/interface-descriptors.h"
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#include "src/macro-assembler.h"
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#include "src/ostreams.h"
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namespace v8 {
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namespace internal {
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// List of code stubs used on all platforms.
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#define CODE_STUB_LIST_ALL_PLATFORMS(V) \
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/* PlatformCodeStubs */ \
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V(ArgumentsAccess) \
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V(ArrayConstructor) \
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V(BinaryOpICWithAllocationSite) \
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V(CallApiFunction) \
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V(CallApiAccessor) \
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V(CallApiGetter) \
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V(CallConstruct) \
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V(CallFunction) \
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V(CallIC) \
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V(CallIC_Array) \
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V(CEntry) \
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V(CompareIC) \
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V(DoubleToI) \
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V(FunctionPrototype) \
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V(Instanceof) \
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V(InternalArrayConstructor) \
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V(JSEntry) \
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V(KeyedLoadICTrampoline) \
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V(LoadICTrampoline) \
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V(CallICTrampoline) \
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V(CallIC_ArrayTrampoline) \
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V(LoadIndexedInterceptor) \
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V(LoadIndexedString) \
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V(MathPow) \
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V(ProfileEntryHook) \
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V(RecordWrite) \
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V(RegExpExec) \
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V(StoreArrayLiteralElement) \
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V(StoreBufferOverflow) \
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V(StoreElement) \
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V(StringCompare) \
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V(StubFailureTrampoline) \
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V(SubString) \
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V(ToNumber) \
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/* HydrogenCodeStubs */ \
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V(AllocateHeapNumber) \
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V(ArrayNArgumentsConstructor) \
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V(ArrayNoArgumentConstructor) \
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V(ArraySingleArgumentConstructor) \
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V(BinaryOpIC) \
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V(BinaryOpWithAllocationSite) \
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V(CompareNilIC) \
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V(CreateAllocationSite) \
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V(CreateWeakCell) \
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V(ElementsTransitionAndStore) \
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V(FastCloneShallowArray) \
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V(FastCloneShallowObject) \
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V(FastNewClosure) \
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V(FastNewContext) \
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V(InternalArrayNArgumentsConstructor) \
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V(InternalArrayNoArgumentConstructor) \
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V(InternalArraySingleArgumentConstructor) \
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V(KeyedLoadGeneric) \
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V(LoadScriptContextField) \
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V(LoadDictionaryElement) \
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V(LoadFastElement) \
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V(MegamorphicLoad) \
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V(NameDictionaryLookup) \
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V(NumberToString) \
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V(RegExpConstructResult) \
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V(StoreFastElement) \
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V(StoreScriptContextField) \
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V(StringAdd) \
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V(ToBoolean) \
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V(TransitionElementsKind) \
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V(VectorKeyedLoad) \
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V(VectorLoad) \
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/* IC Handler stubs */ \
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V(LoadConstant) \
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V(LoadField) \
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V(KeyedLoadSloppyArguments) \
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V(StoreField) \
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V(StoreGlobal) \
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V(StoreTransition) \
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V(StringLength) \
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V(RestParamAccess)
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// List of code stubs only used on ARM 32 bits platforms.
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#if V8_TARGET_ARCH_ARM
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#define CODE_STUB_LIST_ARM(V) V(DirectCEntry)
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#else
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#define CODE_STUB_LIST_ARM(V)
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#endif
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// List of code stubs only used on ARM 64 bits platforms.
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#if V8_TARGET_ARCH_ARM64
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#define CODE_STUB_LIST_ARM64(V) \
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V(DirectCEntry) \
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V(RestoreRegistersState) \
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V(StoreRegistersState)
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#else
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#define CODE_STUB_LIST_ARM64(V)
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#endif
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// List of code stubs only used on PPC platforms.
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#ifdef V8_TARGET_ARCH_PPC
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#define CODE_STUB_LIST_PPC(V) \
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V(DirectCEntry) \
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V(StoreRegistersState) \
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V(RestoreRegistersState)
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#else
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#define CODE_STUB_LIST_PPC(V)
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#endif
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// List of code stubs only used on MIPS platforms.
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#if V8_TARGET_ARCH_MIPS
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#define CODE_STUB_LIST_MIPS(V) \
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V(DirectCEntry) \
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V(RestoreRegistersState) \
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V(StoreRegistersState)
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#elif V8_TARGET_ARCH_MIPS64
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#define CODE_STUB_LIST_MIPS(V) \
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V(DirectCEntry) \
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V(RestoreRegistersState) \
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V(StoreRegistersState)
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#else
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#define CODE_STUB_LIST_MIPS(V)
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#endif
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// Combined list of code stubs.
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#define CODE_STUB_LIST(V) \
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CODE_STUB_LIST_ALL_PLATFORMS(V) \
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CODE_STUB_LIST_ARM(V) \
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CODE_STUB_LIST_ARM64(V) \
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CODE_STUB_LIST_PPC(V) \
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CODE_STUB_LIST_MIPS(V)
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// Stub is base classes of all stubs.
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class CodeStub BASE_EMBEDDED {
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public:
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enum Major {
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// TODO(mvstanton): eliminate the NoCache key by getting rid
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// of the non-monomorphic-cache.
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NoCache = 0, // marker for stubs that do custom caching]
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#define DEF_ENUM(name) name,
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CODE_STUB_LIST(DEF_ENUM)
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#undef DEF_ENUM
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NUMBER_OF_IDS
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};
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// Retrieve the code for the stub. Generate the code if needed.
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Handle<Code> GetCode();
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// Retrieve the code for the stub, make and return a copy of the code.
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Handle<Code> GetCodeCopy(const Code::FindAndReplacePattern& pattern);
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static Major MajorKeyFromKey(uint32_t key) {
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return static_cast<Major>(MajorKeyBits::decode(key));
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}
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static uint32_t MinorKeyFromKey(uint32_t key) {
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return MinorKeyBits::decode(key);
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}
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// Gets the major key from a code object that is a code stub or binary op IC.
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static Major GetMajorKey(Code* code_stub) {
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return MajorKeyFromKey(code_stub->stub_key());
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}
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static uint32_t NoCacheKey() { return MajorKeyBits::encode(NoCache); }
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static const char* MajorName(Major major_key, bool allow_unknown_keys);
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explicit CodeStub(Isolate* isolate) : minor_key_(0), isolate_(isolate) {}
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virtual ~CodeStub() {}
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static void GenerateStubsAheadOfTime(Isolate* isolate);
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static void GenerateFPStubs(Isolate* isolate);
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// Some stubs put untagged junk on the stack that cannot be scanned by the
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// GC. This means that we must be statically sure that no GC can occur while
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// they are running. If that is the case they should override this to return
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// true, which will cause an assertion if we try to call something that can
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// GC or if we try to put a stack frame on top of the junk, which would not
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// result in a traversable stack.
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virtual bool SometimesSetsUpAFrame() { return true; }
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// Lookup the code in the (possibly custom) cache.
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bool FindCodeInCache(Code** code_out);
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virtual CallInterfaceDescriptor GetCallInterfaceDescriptor() = 0;
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virtual void InitializeDescriptor(CodeStubDescriptor* descriptor) {}
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static void InitializeDescriptor(Isolate* isolate, uint32_t key,
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CodeStubDescriptor* desc);
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static MaybeHandle<Code> GetCode(Isolate* isolate, uint32_t key);
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// Returns information for computing the number key.
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virtual Major MajorKey() const = 0;
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uint32_t MinorKey() const { return minor_key_; }
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// BinaryOpStub needs to override this.
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virtual Code::Kind GetCodeKind() const;
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virtual InlineCacheState GetICState() const { return UNINITIALIZED; }
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virtual ExtraICState GetExtraICState() const { return kNoExtraICState; }
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virtual Code::StubType GetStubType() const { return Code::NORMAL; }
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friend std::ostream& operator<<(std::ostream& os, const CodeStub& s) {
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s.PrintName(os);
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return os;
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}
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Isolate* isolate() const { return isolate_; }
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protected:
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CodeStub(uint32_t key, Isolate* isolate)
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: minor_key_(MinorKeyFromKey(key)), isolate_(isolate) {}
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// Generates the assembler code for the stub.
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virtual Handle<Code> GenerateCode() = 0;
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// Returns whether the code generated for this stub needs to be allocated as
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// a fixed (non-moveable) code object.
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virtual bool NeedsImmovableCode() { return false; }
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virtual void PrintName(std::ostream& os) const; // NOLINT
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virtual void PrintBaseName(std::ostream& os) const; // NOLINT
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virtual void PrintState(std::ostream& os) const { ; } // NOLINT
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// Computes the key based on major and minor.
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uint32_t GetKey() {
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DCHECK(static_cast<int>(MajorKey()) < NUMBER_OF_IDS);
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return MinorKeyBits::encode(MinorKey()) | MajorKeyBits::encode(MajorKey());
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}
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uint32_t minor_key_;
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private:
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// Perform bookkeeping required after code generation when stub code is
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// initially generated.
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void RecordCodeGeneration(Handle<Code> code);
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// Finish the code object after it has been generated.
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virtual void FinishCode(Handle<Code> code) { }
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// Activate newly generated stub. Is called after
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// registering stub in the stub cache.
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virtual void Activate(Code* code) { }
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// Add the code to a specialized cache, specific to an individual
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// stub type. Please note, this method must add the code object to a
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// roots object, otherwise we will remove the code during GC.
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virtual void AddToSpecialCache(Handle<Code> new_object) { }
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// Find code in a specialized cache, work is delegated to the specific stub.
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virtual bool FindCodeInSpecialCache(Code** code_out) {
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return false;
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}
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// If a stub uses a special cache override this.
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virtual bool UseSpecialCache() { return false; }
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// We use this dispatch to statically instantiate the correct code stub for
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// the given stub key and call the passed function with that code stub.
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typedef void (*DispatchedCall)(CodeStub* stub, void** value_out);
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static void Dispatch(Isolate* isolate, uint32_t key, void** value_out,
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DispatchedCall call);
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static void GetCodeDispatchCall(CodeStub* stub, void** value_out);
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STATIC_ASSERT(NUMBER_OF_IDS < (1 << kStubMajorKeyBits));
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class MajorKeyBits: public BitField<uint32_t, 0, kStubMajorKeyBits> {};
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class MinorKeyBits: public BitField<uint32_t,
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kStubMajorKeyBits, kStubMinorKeyBits> {}; // NOLINT
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friend class BreakPointIterator;
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Isolate* isolate_;
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};
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// TODO(svenpanne) This class is only used to construct a more or less sensible
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// CompilationInfo for testing purposes, basically pretending that we are
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// currently compiling some kind of code stub. Remove this when the pipeline and
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// testing machinery is restructured in such a way that we don't have to come up
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// with a CompilationInfo out of thin air, although we only need a few parts of
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// it.
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struct FakeStubForTesting : public CodeStub {
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explicit FakeStubForTesting(Isolate* isolate) : CodeStub(isolate) {}
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// Only used by pipeline.cc's GetDebugName in DEBUG mode.
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Major MajorKey() const OVERRIDE { return CodeStub::NoCache; }
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CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE {
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UNREACHABLE();
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return CallInterfaceDescriptor();
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}
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Handle<Code> GenerateCode() OVERRIDE {
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UNREACHABLE();
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return Handle<Code>();
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}
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};
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#define DEFINE_CODE_STUB_BASE(NAME, SUPER) \
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public: \
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NAME(uint32_t key, Isolate* isolate) : SUPER(key, isolate) {} \
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\
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private: \
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DISALLOW_COPY_AND_ASSIGN(NAME)
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#define DEFINE_CODE_STUB(NAME, SUPER) \
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protected: \
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inline Major MajorKey() const OVERRIDE { return NAME; }; \
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DEFINE_CODE_STUB_BASE(NAME##Stub, SUPER)
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#define DEFINE_PLATFORM_CODE_STUB(NAME, SUPER) \
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private: \
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void Generate(MacroAssembler* masm) OVERRIDE; \
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DEFINE_CODE_STUB(NAME, SUPER)
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#define DEFINE_HYDROGEN_CODE_STUB(NAME, SUPER) \
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public: \
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void InitializeDescriptor(CodeStubDescriptor* descriptor) OVERRIDE; \
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Handle<Code> GenerateCode() OVERRIDE; \
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DEFINE_CODE_STUB(NAME, SUPER)
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#define DEFINE_HANDLER_CODE_STUB(NAME, SUPER) \
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public: \
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Handle<Code> GenerateCode() OVERRIDE; \
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DEFINE_CODE_STUB(NAME, SUPER)
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#define DEFINE_CALL_INTERFACE_DESCRIPTOR(NAME) \
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public: \
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CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { \
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return NAME##Descriptor(isolate()); \
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}
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// There are some code stubs we just can't describe right now with a
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// CallInterfaceDescriptor. Isolate behavior for those cases with this macro.
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// An attempt to retrieve a descriptor will fail.
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#define DEFINE_NULL_CALL_INTERFACE_DESCRIPTOR() \
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public: \
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CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE { \
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UNREACHABLE(); \
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return CallInterfaceDescriptor(); \
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}
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class PlatformCodeStub : public CodeStub {
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public:
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// Retrieve the code for the stub. Generate the code if needed.
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Handle<Code> GenerateCode() OVERRIDE;
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Code::Kind GetCodeKind() const OVERRIDE { return Code::STUB; }
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protected:
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explicit PlatformCodeStub(Isolate* isolate) : CodeStub(isolate) {}
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// Generates the assembler code for the stub.
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virtual void Generate(MacroAssembler* masm) = 0;
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DEFINE_CODE_STUB_BASE(PlatformCodeStub, CodeStub);
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};
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enum StubFunctionMode { NOT_JS_FUNCTION_STUB_MODE, JS_FUNCTION_STUB_MODE };
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enum HandlerArgumentsMode { DONT_PASS_ARGUMENTS, PASS_ARGUMENTS };
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class CodeStubDescriptor {
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public:
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explicit CodeStubDescriptor(CodeStub* stub);
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CodeStubDescriptor(Isolate* isolate, uint32_t stub_key);
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void Initialize(Address deoptimization_handler = NULL,
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int hint_stack_parameter_count = -1,
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StubFunctionMode function_mode = NOT_JS_FUNCTION_STUB_MODE);
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void Initialize(Register stack_parameter_count,
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Address deoptimization_handler = NULL,
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int hint_stack_parameter_count = -1,
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StubFunctionMode function_mode = NOT_JS_FUNCTION_STUB_MODE,
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HandlerArgumentsMode handler_mode = DONT_PASS_ARGUMENTS);
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void SetMissHandler(ExternalReference handler) {
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miss_handler_ = handler;
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has_miss_handler_ = true;
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// Our miss handler infrastructure doesn't currently support
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// variable stack parameter counts.
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DCHECK(!stack_parameter_count_.is_valid());
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}
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void set_call_descriptor(CallInterfaceDescriptor d) { call_descriptor_ = d; }
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CallInterfaceDescriptor call_descriptor() const { return call_descriptor_; }
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int GetEnvironmentParameterCount() const {
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return call_descriptor().GetEnvironmentParameterCount();
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}
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Representation GetEnvironmentParameterRepresentation(int index) const {
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return call_descriptor().GetEnvironmentParameterRepresentation(index);
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}
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ExternalReference miss_handler() const {
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DCHECK(has_miss_handler_);
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return miss_handler_;
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}
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bool has_miss_handler() const {
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return has_miss_handler_;
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}
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bool IsEnvironmentParameterCountRegister(int index) const {
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return call_descriptor().GetEnvironmentParameterRegister(index).is(
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stack_parameter_count_);
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}
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int GetHandlerParameterCount() const {
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int params = call_descriptor().GetEnvironmentParameterCount();
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if (handler_arguments_mode_ == PASS_ARGUMENTS) {
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params += 1;
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}
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return params;
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}
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int hint_stack_parameter_count() const { return hint_stack_parameter_count_; }
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Register stack_parameter_count() const { return stack_parameter_count_; }
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StubFunctionMode function_mode() const { return function_mode_; }
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Address deoptimization_handler() const { return deoptimization_handler_; }
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private:
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CallInterfaceDescriptor call_descriptor_;
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Register stack_parameter_count_;
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// If hint_stack_parameter_count_ > 0, the code stub can optimize the
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// return sequence. Default value is -1, which means it is ignored.
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int hint_stack_parameter_count_;
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StubFunctionMode function_mode_;
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Address deoptimization_handler_;
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HandlerArgumentsMode handler_arguments_mode_;
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ExternalReference miss_handler_;
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bool has_miss_handler_;
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};
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class HydrogenCodeStub : public CodeStub {
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public:
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enum InitializationState {
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UNINITIALIZED,
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INITIALIZED
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};
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Code::Kind GetCodeKind() const OVERRIDE { return Code::STUB; }
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template<class SubClass>
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static Handle<Code> GetUninitialized(Isolate* isolate) {
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SubClass::GenerateAheadOfTime(isolate);
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return SubClass().GetCode(isolate);
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}
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// Retrieve the code for the stub. Generate the code if needed.
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Handle<Code> GenerateCode() OVERRIDE = 0;
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bool IsUninitialized() const { return IsMissBits::decode(minor_key_); }
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Handle<Code> GenerateLightweightMissCode(ExternalReference miss);
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template<class StateType>
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void TraceTransition(StateType from, StateType to);
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protected:
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explicit HydrogenCodeStub(Isolate* isolate,
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InitializationState state = INITIALIZED)
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: CodeStub(isolate) {
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minor_key_ = IsMissBits::encode(state == UNINITIALIZED);
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}
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void set_sub_minor_key(uint32_t key) {
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minor_key_ = SubMinorKeyBits::update(minor_key_, key);
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}
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uint32_t sub_minor_key() const { return SubMinorKeyBits::decode(minor_key_); }
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static const int kSubMinorKeyBits = kStubMinorKeyBits - 1;
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private:
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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_PPC
|
|
#include "src/ppc/code-stubs-ppc.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, LanguageMode language_mode,
|
|
FunctionKind kind)
|
|
: HydrogenCodeStub(isolate) {
|
|
DCHECK(IsValidFunctionKind(kind));
|
|
set_sub_minor_key(LanguageModeBits::encode(language_mode) |
|
|
FunctionKindBits::encode(kind));
|
|
}
|
|
|
|
LanguageMode language_mode() const {
|
|
return LanguageModeBits::decode(sub_minor_key());
|
|
}
|
|
|
|
FunctionKind kind() const {
|
|
return FunctionKindBits::decode(sub_minor_key());
|
|
}
|
|
|
|
private:
|
|
STATIC_ASSERT(LANGUAGE_END == 3);
|
|
class LanguageModeBits : public BitField<LanguageMode, 0, 2> {};
|
|
class FunctionKindBits : public BitField<FunctionKind, 2, 8> {};
|
|
|
|
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 CreateWeakCellStub : public HydrogenCodeStub {
|
|
public:
|
|
explicit CreateWeakCellStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
|
|
|
|
static void GenerateAheadOfTime(Isolate* isolate);
|
|
|
|
DEFINE_CALL_INTERFACE_DESCRIPTOR(CreateWeakCell);
|
|
DEFINE_HYDROGEN_CODE_STUB(CreateWeakCell, 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(); }
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
|
|
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);
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::CALL_IC; }
|
|
|
|
InlineCacheState GetICState() const OVERRIDE { return DEFAULT; }
|
|
|
|
ExtraICState GetExtraICState() const FINAL {
|
|
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:
|
|
void PrintState(std::ostream& os) const OVERRIDE; // NOLINT
|
|
|
|
DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunctionWithFeedbackAndVector);
|
|
DEFINE_PLATFORM_CODE_STUB(CallIC, PlatformCodeStub);
|
|
};
|
|
|
|
|
|
class CallIC_ArrayStub: public CallICStub {
|
|
public:
|
|
CallIC_ArrayStub(Isolate* isolate, const CallICState& state_in)
|
|
: CallICStub(isolate, state_in) {}
|
|
|
|
InlineCacheState GetICState() const FINAL { return MONOMORPHIC; }
|
|
|
|
private:
|
|
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) {}
|
|
|
|
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.
|
|
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) {}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; }
|
|
Code::StubType GetStubType() const 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) {}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; }
|
|
Code::StubType GetStubType() const OVERRIDE { return Code::FAST; }
|
|
|
|
DEFINE_CALL_INTERFACE_DESCRIPTOR(Load);
|
|
DEFINE_PLATFORM_CODE_STUB(LoadIndexedString, PlatformCodeStub);
|
|
};
|
|
|
|
|
|
class HandlerStub : public HydrogenCodeStub {
|
|
public:
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::HANDLER; }
|
|
ExtraICState GetExtraICState() const OVERRIDE { return kind(); }
|
|
InlineCacheState GetICState() const OVERRIDE { return MONOMORPHIC; }
|
|
|
|
void InitializeDescriptor(CodeStubDescriptor* descriptor) OVERRIDE;
|
|
|
|
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:
|
|
Code::Kind kind() const OVERRIDE { return Code::LOAD_IC; }
|
|
Code::StubType GetStubType() const 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:
|
|
Code::Kind kind() const OVERRIDE { return Code::KEYED_LOAD_IC; }
|
|
Code::StubType GetStubType() const 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:
|
|
Code::Kind kind() const OVERRIDE { return Code::LOAD_IC; }
|
|
Code::StubType GetStubType() const 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:
|
|
Code::Kind kind() const OVERRIDE { return Code::LOAD_IC; }
|
|
Code::StubType GetStubType() const 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:
|
|
Code::Kind kind() const OVERRIDE { return Code::STORE_IC; }
|
|
Code::StubType GetStubType() const 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());
|
|
}
|
|
|
|
CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE;
|
|
|
|
protected:
|
|
Code::Kind kind() const OVERRIDE { return Code::STORE_IC; }
|
|
Code::StubType GetStubType() const 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> property_cell_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(isolate()->factory()->meta_map(),
|
|
Map::WeakCellForMap(Handle<Map>(global->map())));
|
|
pattern.Add(Handle<Map>(property_cell_placeholder(isolate())->map()),
|
|
isolate()->factory()->NewWeakCell(cell));
|
|
return CodeStub::GetCodeCopy(pattern);
|
|
} else {
|
|
Code::FindAndReplacePattern pattern;
|
|
pattern.Add(Handle<Map>(property_cell_placeholder(isolate())->map()),
|
|
isolate()->factory()->NewWeakCell(cell));
|
|
return CodeStub::GetCodeCopy(pattern);
|
|
}
|
|
}
|
|
|
|
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:
|
|
explicit CallApiFunctionStub(Isolate* isolate, bool call_data_undefined)
|
|
: PlatformCodeStub(isolate) {
|
|
minor_key_ = CallDataUndefinedBits::encode(call_data_undefined);
|
|
}
|
|
|
|
private:
|
|
bool call_data_undefined() const {
|
|
return CallDataUndefinedBits::decode(minor_key_);
|
|
}
|
|
|
|
class CallDataUndefinedBits : public BitField<bool, 0, 1> {};
|
|
|
|
DEFINE_CALL_INTERFACE_DESCRIPTOR(ApiFunction);
|
|
DEFINE_PLATFORM_CODE_STUB(CallApiFunction, PlatformCodeStub);
|
|
};
|
|
|
|
|
|
class CallApiAccessorStub : public PlatformCodeStub {
|
|
public:
|
|
CallApiAccessorStub(Isolate* isolate, bool is_store, bool call_data_undefined)
|
|
: PlatformCodeStub(isolate) {
|
|
minor_key_ = IsStoreBits::encode(is_store) |
|
|
CallDataUndefinedBits::encode(call_data_undefined) |
|
|
ArgumentBits::encode(is_store ? 1 : 0);
|
|
}
|
|
|
|
protected:
|
|
// For CallApiFunctionWithFixedArgsStub, see below.
|
|
static const int kArgBits = 3;
|
|
CallApiAccessorStub(Isolate* isolate, int argc, bool call_data_undefined)
|
|
: PlatformCodeStub(isolate) {
|
|
minor_key_ = IsStoreBits::encode(false) |
|
|
CallDataUndefinedBits::encode(call_data_undefined) |
|
|
ArgumentBits::encode(argc);
|
|
}
|
|
|
|
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, kArgBits> {};
|
|
|
|
DEFINE_CALL_INTERFACE_DESCRIPTOR(ApiAccessor);
|
|
DEFINE_PLATFORM_CODE_STUB(CallApiAccessor, PlatformCodeStub);
|
|
};
|
|
|
|
|
|
// TODO(dcarney): see if it's possible to remove this later without performance
|
|
// degradation.
|
|
// This is not a real stub, but a way of generating the CallApiAccessorStub
|
|
// (which has the same abi) which makes it clear that it is not an accessor.
|
|
class CallApiFunctionWithFixedArgsStub : public CallApiAccessorStub {
|
|
public:
|
|
static const int kMaxFixedArgs = (1 << kArgBits) - 1;
|
|
CallApiFunctionWithFixedArgsStub(Isolate* isolate, int argc,
|
|
bool call_data_undefined)
|
|
: CallApiAccessorStub(isolate, argc, call_data_undefined) {
|
|
DCHECK(0 <= argc && argc <= kMaxFixedArgs);
|
|
}
|
|
};
|
|
|
|
|
|
typedef ApiAccessorDescriptor ApiFunctionWithFixedArgsDescriptor;
|
|
|
|
|
|
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)
|
|
: HydrogenCodeStub(isolate, UNINITIALIZED) {
|
|
BinaryOpICState state(isolate, op);
|
|
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);
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::BINARY_OP_IC; }
|
|
|
|
InlineCacheState GetICState() const FINAL { return state().GetICState(); }
|
|
|
|
ExtraICState GetExtraICState() const FINAL {
|
|
return static_cast<ExtraICState>(sub_minor_key());
|
|
}
|
|
|
|
BinaryOpICState state() const {
|
|
return BinaryOpICState(isolate(), GetExtraICState());
|
|
}
|
|
|
|
void PrintState(std::ostream& os) const FINAL; // 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);
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::BINARY_OP_IC; }
|
|
|
|
InlineCacheState GetICState() const OVERRIDE { return state().GetICState(); }
|
|
|
|
ExtraICState GetExtraICState() const OVERRIDE {
|
|
return static_cast<ExtraICState>(minor_key_);
|
|
}
|
|
|
|
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)
|
|
: BinaryOpICStub(isolate, op) {}
|
|
|
|
BinaryOpWithAllocationSiteStub(Isolate* isolate, const BinaryOpICState& state)
|
|
: BinaryOpICStub(isolate, state) {}
|
|
|
|
Code::Kind GetCodeKind() const FINAL { 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> {};
|
|
|
|
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; }
|
|
|
|
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:
|
|
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;
|
|
|
|
void AddToSpecialCache(Handle<Code> new_object) OVERRIDE;
|
|
bool FindCodeInSpecialCache(Code** code_out) OVERRIDE;
|
|
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();
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::COMPARE_NIL_IC; }
|
|
|
|
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));
|
|
}
|
|
|
|
void PrintState(std::ostream& os) const OVERRIDE; // NOLINT
|
|
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);
|
|
#if _WIN64 || V8_TARGET_ARCH_PPC
|
|
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_); }
|
|
#if _WIN64 || V8_TARGET_ARCH_PPC
|
|
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:
|
|
void FinishCode(Handle<Code> code) OVERRIDE;
|
|
|
|
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
|
|
};
|
|
|
|
enum HasNewTarget { NO_NEW_TARGET, HAS_NEW_TARGET };
|
|
|
|
ArgumentsAccessStub(Isolate* isolate, Type type,
|
|
HasNewTarget has_new_target = NO_NEW_TARGET)
|
|
: PlatformCodeStub(isolate) {
|
|
minor_key_ =
|
|
TypeBits::encode(type) | HasNewTargetBits::encode(has_new_target);
|
|
}
|
|
|
|
CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE {
|
|
if (type() == READ_ELEMENT) {
|
|
return ArgumentsAccessReadDescriptor(isolate());
|
|
}
|
|
return ContextOnlyDescriptor(isolate());
|
|
}
|
|
|
|
private:
|
|
Type type() const { return TypeBits::decode(minor_key_); }
|
|
bool has_new_target() const {
|
|
return HasNewTargetBits::decode(minor_key_) == HAS_NEW_TARGET;
|
|
}
|
|
|
|
void GenerateReadElement(MacroAssembler* masm);
|
|
void GenerateNewStrict(MacroAssembler* masm);
|
|
void GenerateNewSloppyFast(MacroAssembler* masm);
|
|
void GenerateNewSloppySlow(MacroAssembler* masm);
|
|
|
|
void PrintName(std::ostream& os) const OVERRIDE; // NOLINT
|
|
|
|
class TypeBits : public BitField<Type, 0, 2> {};
|
|
class HasNewTargetBits : public BitField<HasNewTarget, 2, 1> {};
|
|
|
|
DEFINE_PLATFORM_CODE_STUB(ArgumentsAccess, PlatformCodeStub);
|
|
};
|
|
|
|
|
|
class RestParamAccessStub: public PlatformCodeStub {
|
|
public:
|
|
explicit RestParamAccessStub(Isolate* isolate) : PlatformCodeStub(isolate) { }
|
|
|
|
CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE {
|
|
return ContextOnlyDescriptor(isolate());
|
|
}
|
|
|
|
private:
|
|
void GenerateNew(MacroAssembler* masm);
|
|
|
|
virtual void PrintName(std::ostream& os) const OVERRIDE; // NOLINT
|
|
|
|
DEFINE_PLATFORM_CODE_STUB(RestParamAccess, 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; }
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
bool IsSuperConstructorCall() const {
|
|
return (flags() & SUPER_CONSTRUCTOR_CALL) != 0;
|
|
}
|
|
|
|
void PrintName(std::ostream& os) const OVERRIDE; // NOLINT
|
|
|
|
class FlagBits : public BitField<CallConstructorFlags, 0, 2> {};
|
|
|
|
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) {}
|
|
|
|
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) {}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::KEYED_LOAD_IC; }
|
|
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();
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; }
|
|
|
|
InlineCacheState GetICState() const FINAL { return DEFAULT; }
|
|
|
|
ExtraICState GetExtraICState() const FINAL {
|
|
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)) {}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::KEYED_LOAD_IC; }
|
|
|
|
DEFINE_PLATFORM_CODE_STUB(KeyedLoadICTrampoline, LoadICTrampolineStub);
|
|
};
|
|
|
|
|
|
class CallICTrampolineStub : public PlatformCodeStub {
|
|
public:
|
|
CallICTrampolineStub(Isolate* isolate, const CallICState& state)
|
|
: PlatformCodeStub(isolate) {
|
|
minor_key_ = state.GetExtraICState();
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::CALL_IC; }
|
|
|
|
InlineCacheState GetICState() const FINAL { return DEFAULT; }
|
|
|
|
ExtraICState GetExtraICState() const FINAL {
|
|
return static_cast<ExtraICState>(minor_key_);
|
|
}
|
|
|
|
protected:
|
|
CallICState state() const {
|
|
return CallICState(static_cast<ExtraICState>(minor_key_));
|
|
}
|
|
|
|
DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunctionWithFeedback);
|
|
DEFINE_PLATFORM_CODE_STUB(CallICTrampoline, PlatformCodeStub);
|
|
};
|
|
|
|
|
|
class CallIC_ArrayTrampolineStub : public CallICTrampolineStub {
|
|
public:
|
|
CallIC_ArrayTrampolineStub(Isolate* isolate, const CallICState& state)
|
|
: CallICTrampolineStub(isolate, state) {}
|
|
|
|
private:
|
|
DEFINE_PLATFORM_CODE_STUB(CallIC_ArrayTrampoline, CallICTrampolineStub);
|
|
};
|
|
|
|
|
|
class MegamorphicLoadStub : public HydrogenCodeStub {
|
|
public:
|
|
MegamorphicLoadStub(Isolate* isolate, const LoadICState& state)
|
|
: HydrogenCodeStub(isolate) {
|
|
set_sub_minor_key(state.GetExtraICState());
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; }
|
|
|
|
InlineCacheState GetICState() const FINAL { return MEGAMORPHIC; }
|
|
|
|
ExtraICState GetExtraICState() const FINAL {
|
|
return static_cast<ExtraICState>(sub_minor_key());
|
|
}
|
|
|
|
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());
|
|
}
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; }
|
|
|
|
InlineCacheState GetICState() const FINAL { return DEFAULT; }
|
|
|
|
ExtraICState GetExtraICState() const FINAL {
|
|
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)) {}
|
|
|
|
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);
|
|
}
|
|
|
|
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> {};
|
|
|
|
Code::StubType GetStubType() const 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:
|
|
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:
|
|
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> {};
|
|
|
|
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:
|
|
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:
|
|
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:
|
|
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()); }
|
|
|
|
Code::Kind GetCodeKind() const OVERRIDE { return Code::TO_BOOLEAN_IC; }
|
|
void PrintState(std::ostream& os) const OVERRIDE; // NOLINT
|
|
|
|
bool SometimesSetsUpAFrame() OVERRIDE { return false; }
|
|
|
|
static Handle<Code> GetUninitialized(Isolate* isolate) {
|
|
return ToBooleanStub(isolate, UNINITIALIZED).GetCode();
|
|
}
|
|
|
|
ExtraICState GetExtraICState() const OVERRIDE { return types().ToIntegral(); }
|
|
|
|
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.
|
|
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);
|
|
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_
|