| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/v8.h" |
| |
| #include "src/bootstrapper.h" |
| #include "src/code-stubs.h" |
| #include "src/cpu-profiler.h" |
| #include "src/factory.h" |
| #include "src/gdb-jit.h" |
| #include "src/ic/handler-compiler.h" |
| #include "src/ic/ic.h" |
| #include "src/macro-assembler.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| CodeStubDescriptor::CodeStubDescriptor(CodeStub* stub) |
| : call_descriptor_(stub->GetCallInterfaceDescriptor()), |
| stack_parameter_count_(no_reg), |
| hint_stack_parameter_count_(-1), |
| function_mode_(NOT_JS_FUNCTION_STUB_MODE), |
| deoptimization_handler_(NULL), |
| handler_arguments_mode_(DONT_PASS_ARGUMENTS), |
| miss_handler_(), |
| has_miss_handler_(false) { |
| stub->InitializeDescriptor(this); |
| } |
| |
| |
| CodeStubDescriptor::CodeStubDescriptor(Isolate* isolate, uint32_t stub_key) |
| : stack_parameter_count_(no_reg), |
| hint_stack_parameter_count_(-1), |
| function_mode_(NOT_JS_FUNCTION_STUB_MODE), |
| deoptimization_handler_(NULL), |
| handler_arguments_mode_(DONT_PASS_ARGUMENTS), |
| miss_handler_(), |
| has_miss_handler_(false) { |
| CodeStub::InitializeDescriptor(isolate, stub_key, this); |
| } |
| |
| |
| void CodeStubDescriptor::Initialize(Address deoptimization_handler, |
| int hint_stack_parameter_count, |
| StubFunctionMode function_mode) { |
| deoptimization_handler_ = deoptimization_handler; |
| hint_stack_parameter_count_ = hint_stack_parameter_count; |
| function_mode_ = function_mode; |
| } |
| |
| |
| void CodeStubDescriptor::Initialize(Register stack_parameter_count, |
| Address deoptimization_handler, |
| int hint_stack_parameter_count, |
| StubFunctionMode function_mode, |
| HandlerArgumentsMode handler_mode) { |
| Initialize(deoptimization_handler, hint_stack_parameter_count, function_mode); |
| stack_parameter_count_ = stack_parameter_count; |
| handler_arguments_mode_ = handler_mode; |
| } |
| |
| |
| bool CodeStub::FindCodeInCache(Code** code_out) { |
| UnseededNumberDictionary* stubs = isolate()->heap()->code_stubs(); |
| int index = stubs->FindEntry(GetKey()); |
| if (index != UnseededNumberDictionary::kNotFound) { |
| *code_out = Code::cast(stubs->ValueAt(index)); |
| return true; |
| } |
| return false; |
| } |
| |
| |
| void CodeStub::RecordCodeGeneration(Handle<Code> code) { |
| IC::RegisterWeakMapDependency(code); |
| OStringStream os; |
| os << *this; |
| PROFILE(isolate(), CodeCreateEvent(Logger::STUB_TAG, *code, os.c_str())); |
| Counters* counters = isolate()->counters(); |
| counters->total_stubs_code_size()->Increment(code->instruction_size()); |
| } |
| |
| |
| Code::Kind CodeStub::GetCodeKind() const { |
| return Code::STUB; |
| } |
| |
| |
| Handle<Code> CodeStub::GetCodeCopy(const Code::FindAndReplacePattern& pattern) { |
| Handle<Code> ic = GetCode(); |
| ic = isolate()->factory()->CopyCode(ic); |
| ic->FindAndReplace(pattern); |
| RecordCodeGeneration(ic); |
| return ic; |
| } |
| |
| |
| Handle<Code> PlatformCodeStub::GenerateCode() { |
| Factory* factory = isolate()->factory(); |
| |
| // Generate the new code. |
| MacroAssembler masm(isolate(), NULL, 256); |
| |
| // TODO(yangguo) remove this once the code serializer handles code stubs. |
| if (FLAG_serialize_toplevel) masm.enable_serializer(); |
| |
| { |
| // Update the static counter each time a new code stub is generated. |
| isolate()->counters()->code_stubs()->Increment(); |
| |
| // Generate the code for the stub. |
| masm.set_generating_stub(true); |
| NoCurrentFrameScope scope(&masm); |
| Generate(&masm); |
| } |
| |
| // Create the code object. |
| CodeDesc desc; |
| masm.GetCode(&desc); |
| |
| // Copy the generated code into a heap object. |
| Code::Flags flags = Code::ComputeFlags( |
| GetCodeKind(), |
| GetICState(), |
| GetExtraICState(), |
| GetStubType()); |
| Handle<Code> new_object = factory->NewCode( |
| desc, flags, masm.CodeObject(), NeedsImmovableCode()); |
| return new_object; |
| } |
| |
| |
| Handle<Code> CodeStub::GetCode() { |
| Heap* heap = isolate()->heap(); |
| Code* code; |
| if (UseSpecialCache() ? FindCodeInSpecialCache(&code) |
| : FindCodeInCache(&code)) { |
| DCHECK(GetCodeKind() == code->kind()); |
| return Handle<Code>(code); |
| } |
| |
| { |
| HandleScope scope(isolate()); |
| |
| Handle<Code> new_object = GenerateCode(); |
| new_object->set_stub_key(GetKey()); |
| FinishCode(new_object); |
| RecordCodeGeneration(new_object); |
| |
| #ifdef ENABLE_DISASSEMBLER |
| if (FLAG_print_code_stubs) { |
| CodeTracer::Scope trace_scope(isolate()->GetCodeTracer()); |
| OFStream os(trace_scope.file()); |
| OStringStream name; |
| name << *this; |
| new_object->Disassemble(name.c_str(), os); |
| os << "\n"; |
| } |
| #endif |
| |
| if (UseSpecialCache()) { |
| AddToSpecialCache(new_object); |
| } else { |
| // Update the dictionary and the root in Heap. |
| Handle<UnseededNumberDictionary> dict = |
| UnseededNumberDictionary::AtNumberPut( |
| Handle<UnseededNumberDictionary>(heap->code_stubs()), |
| GetKey(), |
| new_object); |
| heap->public_set_code_stubs(*dict); |
| } |
| code = *new_object; |
| } |
| |
| Activate(code); |
| DCHECK(!NeedsImmovableCode() || |
| heap->lo_space()->Contains(code) || |
| heap->code_space()->FirstPage()->Contains(code->address())); |
| return Handle<Code>(code, isolate()); |
| } |
| |
| |
| const char* CodeStub::MajorName(CodeStub::Major major_key, |
| bool allow_unknown_keys) { |
| switch (major_key) { |
| #define DEF_CASE(name) case name: return #name "Stub"; |
| CODE_STUB_LIST(DEF_CASE) |
| #undef DEF_CASE |
| case NoCache: |
| return "<NoCache>Stub"; |
| case NUMBER_OF_IDS: |
| UNREACHABLE(); |
| return NULL; |
| } |
| return NULL; |
| } |
| |
| |
| void CodeStub::PrintBaseName(OStream& os) const { // NOLINT |
| os << MajorName(MajorKey(), false); |
| } |
| |
| |
| void CodeStub::PrintName(OStream& os) const { // NOLINT |
| PrintBaseName(os); |
| PrintState(os); |
| } |
| |
| |
| void CodeStub::Dispatch(Isolate* isolate, uint32_t key, void** value_out, |
| DispatchedCall call) { |
| switch (MajorKeyFromKey(key)) { |
| #define DEF_CASE(NAME) \ |
| case NAME: { \ |
| NAME##Stub stub(key, isolate); \ |
| CodeStub* pstub = &stub; \ |
| call(pstub, value_out); \ |
| break; \ |
| } |
| CODE_STUB_LIST(DEF_CASE) |
| #undef DEF_CASE |
| case NUMBER_OF_IDS: |
| UNREACHABLE(); |
| case NoCache: |
| *value_out = NULL; |
| break; |
| } |
| } |
| |
| |
| static void InitializeDescriptorDispatchedCall(CodeStub* stub, |
| void** value_out) { |
| CodeStubDescriptor* descriptor_out = |
| reinterpret_cast<CodeStubDescriptor*>(value_out); |
| stub->InitializeDescriptor(descriptor_out); |
| descriptor_out->set_call_descriptor(stub->GetCallInterfaceDescriptor()); |
| } |
| |
| |
| void CodeStub::InitializeDescriptor(Isolate* isolate, uint32_t key, |
| CodeStubDescriptor* desc) { |
| void** value_out = reinterpret_cast<void**>(desc); |
| Dispatch(isolate, key, value_out, &InitializeDescriptorDispatchedCall); |
| } |
| |
| |
| void CodeStub::GetCodeDispatchCall(CodeStub* stub, void** value_out) { |
| Handle<Code>* code_out = reinterpret_cast<Handle<Code>*>(value_out); |
| // Code stubs with special cache cannot be recreated from stub key. |
| *code_out = stub->UseSpecialCache() ? Handle<Code>() : stub->GetCode(); |
| } |
| |
| |
| MaybeHandle<Code> CodeStub::GetCode(Isolate* isolate, uint32_t key) { |
| HandleScope scope(isolate); |
| Handle<Code> code; |
| void** value_out = reinterpret_cast<void**>(&code); |
| Dispatch(isolate, key, value_out, &GetCodeDispatchCall); |
| return scope.CloseAndEscape(code); |
| } |
| |
| |
| // static |
| void BinaryOpICStub::GenerateAheadOfTime(Isolate* isolate) { |
| // Generate the uninitialized versions of the stub. |
| for (int op = Token::BIT_OR; op <= Token::MOD; ++op) { |
| for (int mode = NO_OVERWRITE; mode <= OVERWRITE_RIGHT; ++mode) { |
| BinaryOpICStub stub(isolate, |
| static_cast<Token::Value>(op), |
| static_cast<OverwriteMode>(mode)); |
| stub.GetCode(); |
| } |
| } |
| |
| // Generate special versions of the stub. |
| BinaryOpICState::GenerateAheadOfTime(isolate, &GenerateAheadOfTime); |
| } |
| |
| |
| void BinaryOpICStub::PrintState(OStream& os) const { // NOLINT |
| os << state(); |
| } |
| |
| |
| // static |
| void BinaryOpICStub::GenerateAheadOfTime(Isolate* isolate, |
| const BinaryOpICState& state) { |
| BinaryOpICStub stub(isolate, state); |
| stub.GetCode(); |
| } |
| |
| |
| // static |
| void BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(Isolate* isolate) { |
| // Generate special versions of the stub. |
| BinaryOpICState::GenerateAheadOfTime(isolate, &GenerateAheadOfTime); |
| } |
| |
| |
| void BinaryOpICWithAllocationSiteStub::PrintState( |
| OStream& os) const { // NOLINT |
| os << state(); |
| } |
| |
| |
| // static |
| void BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime( |
| Isolate* isolate, const BinaryOpICState& state) { |
| if (state.CouldCreateAllocationMementos()) { |
| BinaryOpICWithAllocationSiteStub stub(isolate, state); |
| stub.GetCode(); |
| } |
| } |
| |
| |
| void StringAddStub::PrintBaseName(OStream& os) const { // NOLINT |
| os << "StringAddStub"; |
| if ((flags() & STRING_ADD_CHECK_BOTH) == STRING_ADD_CHECK_BOTH) { |
| os << "_CheckBoth"; |
| } else if ((flags() & STRING_ADD_CHECK_LEFT) == STRING_ADD_CHECK_LEFT) { |
| os << "_CheckLeft"; |
| } else if ((flags() & STRING_ADD_CHECK_RIGHT) == STRING_ADD_CHECK_RIGHT) { |
| os << "_CheckRight"; |
| } |
| if (pretenure_flag() == TENURED) { |
| os << "_Tenured"; |
| } |
| } |
| |
| |
| InlineCacheState CompareICStub::GetICState() const { |
| CompareICState::State state = Max(left(), right()); |
| switch (state) { |
| case CompareICState::UNINITIALIZED: |
| return ::v8::internal::UNINITIALIZED; |
| case CompareICState::SMI: |
| case CompareICState::NUMBER: |
| case CompareICState::INTERNALIZED_STRING: |
| case CompareICState::STRING: |
| case CompareICState::UNIQUE_NAME: |
| case CompareICState::OBJECT: |
| case CompareICState::KNOWN_OBJECT: |
| return MONOMORPHIC; |
| case CompareICState::GENERIC: |
| return ::v8::internal::GENERIC; |
| } |
| UNREACHABLE(); |
| return ::v8::internal::UNINITIALIZED; |
| } |
| |
| |
| Condition CompareICStub::GetCondition() const { |
| return CompareIC::ComputeCondition(op()); |
| } |
| |
| |
| void CompareICStub::AddToSpecialCache(Handle<Code> new_object) { |
| DCHECK(*known_map_ != NULL); |
| Isolate* isolate = new_object->GetIsolate(); |
| Factory* factory = isolate->factory(); |
| return Map::UpdateCodeCache(known_map_, |
| strict() ? |
| factory->strict_compare_ic_string() : |
| factory->compare_ic_string(), |
| new_object); |
| } |
| |
| |
| bool CompareICStub::FindCodeInSpecialCache(Code** code_out) { |
| Factory* factory = isolate()->factory(); |
| Code::Flags flags = Code::ComputeFlags( |
| GetCodeKind(), |
| UNINITIALIZED); |
| DCHECK(op() == Token::EQ || op() == Token::EQ_STRICT); |
| Handle<Object> probe( |
| known_map_->FindInCodeCache( |
| strict() ? |
| *factory->strict_compare_ic_string() : |
| *factory->compare_ic_string(), |
| flags), |
| isolate()); |
| if (probe->IsCode()) { |
| *code_out = Code::cast(*probe); |
| #ifdef DEBUG |
| CompareICStub decode((*code_out)->stub_key(), isolate()); |
| DCHECK(op() == decode.op()); |
| DCHECK(left() == decode.left()); |
| DCHECK(right() == decode.right()); |
| DCHECK(state() == decode.state()); |
| #endif |
| return true; |
| } |
| return false; |
| } |
| |
| |
| void CompareICStub::Generate(MacroAssembler* masm) { |
| switch (state()) { |
| case CompareICState::UNINITIALIZED: |
| GenerateMiss(masm); |
| break; |
| case CompareICState::SMI: |
| GenerateSmis(masm); |
| break; |
| case CompareICState::NUMBER: |
| GenerateNumbers(masm); |
| break; |
| case CompareICState::STRING: |
| GenerateStrings(masm); |
| break; |
| case CompareICState::INTERNALIZED_STRING: |
| GenerateInternalizedStrings(masm); |
| break; |
| case CompareICState::UNIQUE_NAME: |
| GenerateUniqueNames(masm); |
| break; |
| case CompareICState::OBJECT: |
| GenerateObjects(masm); |
| break; |
| case CompareICState::KNOWN_OBJECT: |
| DCHECK(*known_map_ != NULL); |
| GenerateKnownObjects(masm); |
| break; |
| case CompareICState::GENERIC: |
| GenerateGeneric(masm); |
| break; |
| } |
| } |
| |
| |
| void CompareNilICStub::UpdateStatus(Handle<Object> object) { |
| State state = this->state(); |
| DCHECK(!state.Contains(GENERIC)); |
| State old_state = state; |
| if (object->IsNull()) { |
| state.Add(NULL_TYPE); |
| } else if (object->IsUndefined()) { |
| state.Add(UNDEFINED); |
| } else if (object->IsUndetectableObject() || |
| object->IsOddball() || |
| !object->IsHeapObject()) { |
| state.RemoveAll(); |
| state.Add(GENERIC); |
| } else if (IsMonomorphic()) { |
| state.RemoveAll(); |
| state.Add(GENERIC); |
| } else { |
| state.Add(MONOMORPHIC_MAP); |
| } |
| TraceTransition(old_state, state); |
| set_sub_minor_key(TypesBits::update(sub_minor_key(), state.ToIntegral())); |
| } |
| |
| |
| template<class StateType> |
| void HydrogenCodeStub::TraceTransition(StateType from, StateType to) { |
| // Note: Although a no-op transition is semantically OK, it is hinting at a |
| // bug somewhere in our state transition machinery. |
| DCHECK(from != to); |
| if (!FLAG_trace_ic) return; |
| OFStream os(stdout); |
| os << "["; |
| PrintBaseName(os); |
| os << ": " << from << "=>" << to << "]" << endl; |
| } |
| |
| |
| void CompareNilICStub::PrintBaseName(OStream& os) const { // NOLINT |
| CodeStub::PrintBaseName(os); |
| os << ((nil_value() == kNullValue) ? "(NullValue)" : "(UndefinedValue)"); |
| } |
| |
| |
| void CompareNilICStub::PrintState(OStream& os) const { // NOLINT |
| os << state(); |
| } |
| |
| |
| // TODO(svenpanne) Make this a real infix_ostream_iterator. |
| class SimpleListPrinter { |
| public: |
| explicit SimpleListPrinter(OStream& os) : os_(os), first_(true) {} |
| |
| void Add(const char* s) { |
| if (first_) { |
| first_ = false; |
| } else { |
| os_ << ","; |
| } |
| os_ << s; |
| } |
| |
| private: |
| OStream& os_; |
| bool first_; |
| }; |
| |
| |
| OStream& operator<<(OStream& os, const CompareNilICStub::State& s) { |
| os << "("; |
| SimpleListPrinter p(os); |
| if (s.IsEmpty()) p.Add("None"); |
| if (s.Contains(CompareNilICStub::UNDEFINED)) p.Add("Undefined"); |
| if (s.Contains(CompareNilICStub::NULL_TYPE)) p.Add("Null"); |
| if (s.Contains(CompareNilICStub::MONOMORPHIC_MAP)) p.Add("MonomorphicMap"); |
| if (s.Contains(CompareNilICStub::GENERIC)) p.Add("Generic"); |
| return os << ")"; |
| } |
| |
| |
| Type* CompareNilICStub::GetType(Zone* zone, Handle<Map> map) { |
| State state = this->state(); |
| if (state.Contains(CompareNilICStub::GENERIC)) return Type::Any(zone); |
| |
| Type* result = Type::None(zone); |
| if (state.Contains(CompareNilICStub::UNDEFINED)) { |
| result = Type::Union(result, Type::Undefined(zone), zone); |
| } |
| if (state.Contains(CompareNilICStub::NULL_TYPE)) { |
| result = Type::Union(result, Type::Null(zone), zone); |
| } |
| if (state.Contains(CompareNilICStub::MONOMORPHIC_MAP)) { |
| Type* type = |
| map.is_null() ? Type::Detectable(zone) : Type::Class(map, zone); |
| result = Type::Union(result, type, zone); |
| } |
| |
| return result; |
| } |
| |
| |
| Type* CompareNilICStub::GetInputType(Zone* zone, Handle<Map> map) { |
| Type* output_type = GetType(zone, map); |
| Type* nil_type = |
| nil_value() == kNullValue ? Type::Null(zone) : Type::Undefined(zone); |
| return Type::Union(output_type, nil_type, zone); |
| } |
| |
| |
| void CallIC_ArrayStub::PrintState(OStream& os) const { // NOLINT |
| os << state() << " (Array)"; |
| } |
| |
| |
| void CallICStub::PrintState(OStream& os) const { // NOLINT |
| os << state(); |
| } |
| |
| |
| void InstanceofStub::PrintName(OStream& os) const { // NOLINT |
| os << "InstanceofStub"; |
| if (HasArgsInRegisters()) os << "_REGS"; |
| if (HasCallSiteInlineCheck()) os << "_INLINE"; |
| if (ReturnTrueFalseObject()) os << "_TRUEFALSE"; |
| } |
| |
| |
| void JSEntryStub::FinishCode(Handle<Code> code) { |
| Handle<FixedArray> handler_table = |
| code->GetIsolate()->factory()->NewFixedArray(1, TENURED); |
| handler_table->set(0, Smi::FromInt(handler_offset_)); |
| code->set_handler_table(*handler_table); |
| } |
| |
| |
| void LoadFastElementStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure)); |
| } |
| |
| |
| void LoadDictionaryElementStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure)); |
| } |
| |
| |
| void KeyedLoadGenericStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kKeyedGetProperty)->entry); |
| } |
| |
| |
| void HandlerStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| if (kind() == Code::STORE_IC) { |
| descriptor->Initialize(FUNCTION_ADDR(StoreIC_MissFromStubFailure)); |
| } else if (kind() == Code::KEYED_LOAD_IC) { |
| descriptor->Initialize(FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure)); |
| } |
| } |
| |
| |
| CallInterfaceDescriptor HandlerStub::GetCallInterfaceDescriptor() { |
| if (kind() == Code::LOAD_IC || kind() == Code::KEYED_LOAD_IC) { |
| return LoadDescriptor(isolate()); |
| } else { |
| DCHECK_EQ(Code::STORE_IC, kind()); |
| return StoreDescriptor(isolate()); |
| } |
| } |
| |
| |
| void StoreFastElementStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(KeyedStoreIC_MissFromStubFailure)); |
| } |
| |
| |
| void ElementsTransitionAndStoreStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(ElementsTransitionAndStoreIC_Miss)); |
| } |
| |
| |
| static void InitializeVectorLoadStub(Isolate* isolate, |
| CodeStubDescriptor* descriptor, |
| Address deoptimization_handler) { |
| DCHECK(FLAG_vector_ics); |
| descriptor->Initialize(deoptimization_handler); |
| } |
| |
| |
| void VectorLoadStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| InitializeVectorLoadStub(isolate(), descriptor, |
| FUNCTION_ADDR(VectorLoadIC_MissFromStubFailure)); |
| } |
| |
| |
| void VectorKeyedLoadStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| InitializeVectorLoadStub( |
| isolate(), descriptor, |
| FUNCTION_ADDR(VectorKeyedLoadIC_MissFromStubFailure)); |
| } |
| |
| |
| void MegamorphicLoadStub::InitializeDescriptor(CodeStubDescriptor* d) {} |
| |
| |
| void FastNewClosureStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kNewClosureFromStubFailure)->entry); |
| } |
| |
| |
| void FastNewContextStub::InitializeDescriptor(CodeStubDescriptor* d) {} |
| |
| |
| void ToNumberStub::InitializeDescriptor(CodeStubDescriptor* d) {} |
| |
| |
| void NumberToStringStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| NumberToStringDescriptor call_descriptor(isolate()); |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kNumberToStringRT)->entry); |
| } |
| |
| |
| void FastCloneShallowArrayStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| FastCloneShallowArrayDescriptor call_descriptor(isolate()); |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kCreateArrayLiteralStubBailout)->entry); |
| } |
| |
| |
| void FastCloneShallowObjectStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| FastCloneShallowObjectDescriptor call_descriptor(isolate()); |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kCreateObjectLiteral)->entry); |
| } |
| |
| |
| void CreateAllocationSiteStub::InitializeDescriptor(CodeStubDescriptor* d) {} |
| |
| |
| void RegExpConstructResultStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kRegExpConstructResult)->entry); |
| } |
| |
| |
| void TransitionElementsKindStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize( |
| Runtime::FunctionForId(Runtime::kTransitionElementsKind)->entry); |
| } |
| |
| |
| void CompareNilICStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(CompareNilIC_Miss)); |
| descriptor->SetMissHandler( |
| ExternalReference(IC_Utility(IC::kCompareNilIC_Miss), isolate())); |
| } |
| |
| |
| void ToBooleanStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(ToBooleanIC_Miss)); |
| descriptor->SetMissHandler( |
| ExternalReference(IC_Utility(IC::kToBooleanIC_Miss), isolate())); |
| } |
| |
| |
| void BinaryOpICStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(BinaryOpIC_Miss)); |
| descriptor->SetMissHandler( |
| ExternalReference(IC_Utility(IC::kBinaryOpIC_Miss), isolate())); |
| } |
| |
| |
| void BinaryOpWithAllocationSiteStub::InitializeDescriptor( |
| CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(FUNCTION_ADDR(BinaryOpIC_MissWithAllocationSite)); |
| } |
| |
| |
| void StringAddStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| descriptor->Initialize(Runtime::FunctionForId(Runtime::kStringAdd)->entry); |
| } |
| |
| |
| void CreateAllocationSiteStub::GenerateAheadOfTime(Isolate* isolate) { |
| CreateAllocationSiteStub stub(isolate); |
| stub.GetCode(); |
| } |
| |
| |
| void StoreElementStub::Generate(MacroAssembler* masm) { |
| switch (elements_kind()) { |
| case FAST_ELEMENTS: |
| case FAST_HOLEY_ELEMENTS: |
| case FAST_SMI_ELEMENTS: |
| case FAST_HOLEY_SMI_ELEMENTS: |
| case FAST_DOUBLE_ELEMENTS: |
| case FAST_HOLEY_DOUBLE_ELEMENTS: |
| #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
| case EXTERNAL_##TYPE##_ELEMENTS: \ |
| case TYPE##_ELEMENTS: |
| |
| TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| #undef TYPED_ARRAY_CASE |
| UNREACHABLE(); |
| break; |
| case DICTIONARY_ELEMENTS: |
| ElementHandlerCompiler::GenerateStoreSlow(masm); |
| break; |
| case SLOPPY_ARGUMENTS_ELEMENTS: |
| UNREACHABLE(); |
| break; |
| } |
| } |
| |
| |
| void ArgumentsAccessStub::Generate(MacroAssembler* masm) { |
| switch (type()) { |
| case READ_ELEMENT: |
| GenerateReadElement(masm); |
| break; |
| case NEW_SLOPPY_FAST: |
| GenerateNewSloppyFast(masm); |
| break; |
| case NEW_SLOPPY_SLOW: |
| GenerateNewSloppySlow(masm); |
| break; |
| case NEW_STRICT: |
| GenerateNewStrict(masm); |
| break; |
| } |
| } |
| |
| |
| void ArgumentsAccessStub::PrintName(OStream& os) const { // NOLINT |
| os << "ArgumentsAccessStub_"; |
| switch (type()) { |
| case READ_ELEMENT: |
| os << "ReadElement"; |
| break; |
| case NEW_SLOPPY_FAST: |
| os << "NewSloppyFast"; |
| break; |
| case NEW_SLOPPY_SLOW: |
| os << "NewSloppySlow"; |
| break; |
| case NEW_STRICT: |
| os << "NewStrict"; |
| break; |
| } |
| return; |
| } |
| |
| |
| void CallFunctionStub::PrintName(OStream& os) const { // NOLINT |
| os << "CallFunctionStub_Args" << argc(); |
| } |
| |
| |
| void CallConstructStub::PrintName(OStream& os) const { // NOLINT |
| os << "CallConstructStub"; |
| if (RecordCallTarget()) os << "_Recording"; |
| } |
| |
| |
| void ArrayConstructorStub::PrintName(OStream& os) const { // NOLINT |
| os << "ArrayConstructorStub"; |
| switch (argument_count()) { |
| case ANY: |
| os << "_Any"; |
| break; |
| case NONE: |
| os << "_None"; |
| break; |
| case ONE: |
| os << "_One"; |
| break; |
| case MORE_THAN_ONE: |
| os << "_More_Than_One"; |
| break; |
| } |
| return; |
| } |
| |
| |
| OStream& ArrayConstructorStubBase::BasePrintName(OStream& os, // NOLINT |
| const char* name) const { |
| os << name << "_" << ElementsKindToString(elements_kind()); |
| if (override_mode() == DISABLE_ALLOCATION_SITES) { |
| os << "_DISABLE_ALLOCATION_SITES"; |
| } |
| return os; |
| } |
| |
| |
| bool ToBooleanStub::UpdateStatus(Handle<Object> object) { |
| Types new_types = types(); |
| Types old_types = new_types; |
| bool to_boolean_value = new_types.UpdateStatus(object); |
| TraceTransition(old_types, new_types); |
| set_sub_minor_key(TypesBits::update(sub_minor_key(), new_types.ToByte())); |
| return to_boolean_value; |
| } |
| |
| |
| void ToBooleanStub::PrintState(OStream& os) const { // NOLINT |
| os << types(); |
| } |
| |
| |
| OStream& operator<<(OStream& os, const ToBooleanStub::Types& s) { |
| os << "("; |
| SimpleListPrinter p(os); |
| if (s.IsEmpty()) p.Add("None"); |
| if (s.Contains(ToBooleanStub::UNDEFINED)) p.Add("Undefined"); |
| if (s.Contains(ToBooleanStub::BOOLEAN)) p.Add("Bool"); |
| if (s.Contains(ToBooleanStub::NULL_TYPE)) p.Add("Null"); |
| if (s.Contains(ToBooleanStub::SMI)) p.Add("Smi"); |
| if (s.Contains(ToBooleanStub::SPEC_OBJECT)) p.Add("SpecObject"); |
| if (s.Contains(ToBooleanStub::STRING)) p.Add("String"); |
| if (s.Contains(ToBooleanStub::SYMBOL)) p.Add("Symbol"); |
| if (s.Contains(ToBooleanStub::HEAP_NUMBER)) p.Add("HeapNumber"); |
| return os << ")"; |
| } |
| |
| |
| bool ToBooleanStub::Types::UpdateStatus(Handle<Object> object) { |
| if (object->IsUndefined()) { |
| Add(UNDEFINED); |
| return false; |
| } else if (object->IsBoolean()) { |
| Add(BOOLEAN); |
| return object->IsTrue(); |
| } else if (object->IsNull()) { |
| Add(NULL_TYPE); |
| return false; |
| } else if (object->IsSmi()) { |
| Add(SMI); |
| return Smi::cast(*object)->value() != 0; |
| } else if (object->IsSpecObject()) { |
| Add(SPEC_OBJECT); |
| return !object->IsUndetectableObject(); |
| } else if (object->IsString()) { |
| Add(STRING); |
| return !object->IsUndetectableObject() && |
| String::cast(*object)->length() != 0; |
| } else if (object->IsSymbol()) { |
| Add(SYMBOL); |
| return true; |
| } else if (object->IsHeapNumber()) { |
| DCHECK(!object->IsUndetectableObject()); |
| Add(HEAP_NUMBER); |
| double value = HeapNumber::cast(*object)->value(); |
| return value != 0 && !std::isnan(value); |
| } else { |
| // We should never see an internal object at runtime here! |
| UNREACHABLE(); |
| return true; |
| } |
| } |
| |
| |
| bool ToBooleanStub::Types::NeedsMap() const { |
| return Contains(ToBooleanStub::SPEC_OBJECT) |
| || Contains(ToBooleanStub::STRING) |
| || Contains(ToBooleanStub::SYMBOL) |
| || Contains(ToBooleanStub::HEAP_NUMBER); |
| } |
| |
| |
| bool ToBooleanStub::Types::CanBeUndetectable() const { |
| return Contains(ToBooleanStub::SPEC_OBJECT) |
| || Contains(ToBooleanStub::STRING); |
| } |
| |
| |
| void StubFailureTrampolineStub::GenerateAheadOfTime(Isolate* isolate) { |
| StubFailureTrampolineStub stub1(isolate, NOT_JS_FUNCTION_STUB_MODE); |
| StubFailureTrampolineStub stub2(isolate, JS_FUNCTION_STUB_MODE); |
| stub1.GetCode(); |
| stub2.GetCode(); |
| } |
| |
| |
| void ProfileEntryHookStub::EntryHookTrampoline(intptr_t function, |
| intptr_t stack_pointer, |
| Isolate* isolate) { |
| FunctionEntryHook entry_hook = isolate->function_entry_hook(); |
| DCHECK(entry_hook != NULL); |
| entry_hook(function, stack_pointer); |
| } |
| |
| |
| ArrayConstructorStub::ArrayConstructorStub(Isolate* isolate) |
| : PlatformCodeStub(isolate) { |
| minor_key_ = ArgumentCountBits::encode(ANY); |
| ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
| } |
| |
| |
| ArrayConstructorStub::ArrayConstructorStub(Isolate* isolate, |
| int argument_count) |
| : PlatformCodeStub(isolate) { |
| if (argument_count == 0) { |
| minor_key_ = ArgumentCountBits::encode(NONE); |
| } else if (argument_count == 1) { |
| minor_key_ = ArgumentCountBits::encode(ONE); |
| } else if (argument_count >= 2) { |
| minor_key_ = ArgumentCountBits::encode(MORE_THAN_ONE); |
| } else { |
| UNREACHABLE(); |
| } |
| ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
| } |
| |
| |
| InternalArrayConstructorStub::InternalArrayConstructorStub( |
| Isolate* isolate) : PlatformCodeStub(isolate) { |
| InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
| } |
| |
| |
| } } // namespace v8::internal |