Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5 | #include "src/code-stubs.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6 | |
| 7 | #include "src/bailout-reason.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 8 | #include "src/crankshaft/hydrogen.h" |
| 9 | #include "src/crankshaft/lithium.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 10 | #include "src/field-index.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 11 | #include "src/ic/ic.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | |
| 17 | static LChunk* OptimizeGraph(HGraph* graph) { |
| 18 | DisallowHeapAllocation no_allocation; |
| 19 | DisallowHandleAllocation no_handles; |
| 20 | DisallowHandleDereference no_deref; |
| 21 | |
| 22 | DCHECK(graph != NULL); |
| 23 | BailoutReason bailout_reason = kNoReason; |
| 24 | if (!graph->Optimize(&bailout_reason)) { |
| 25 | FATAL(GetBailoutReason(bailout_reason)); |
| 26 | } |
| 27 | LChunk* chunk = LChunk::NewChunk(graph); |
| 28 | if (chunk == NULL) { |
| 29 | FATAL(GetBailoutReason(graph->info()->bailout_reason())); |
| 30 | } |
| 31 | return chunk; |
| 32 | } |
| 33 | |
| 34 | |
| 35 | class CodeStubGraphBuilderBase : public HGraphBuilder { |
| 36 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 37 | explicit CodeStubGraphBuilderBase(CompilationInfo* info) |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 38 | : HGraphBuilder(info), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 39 | arguments_length_(NULL), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 40 | info_(info), |
| 41 | descriptor_(info->code_stub()), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 42 | context_(NULL) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 43 | int parameter_count = GetParameterCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 44 | parameters_.Reset(new HParameter*[parameter_count]); |
| 45 | } |
| 46 | virtual bool BuildGraph(); |
| 47 | |
| 48 | protected: |
| 49 | virtual HValue* BuildCodeStub() = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 50 | int GetParameterCount() const { return descriptor_.GetParameterCount(); } |
| 51 | int GetRegisterParameterCount() const { |
| 52 | return descriptor_.GetRegisterParameterCount(); |
| 53 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | HParameter* GetParameter(int parameter) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 55 | DCHECK(parameter < GetParameterCount()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | return parameters_[parameter]; |
| 57 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 58 | Representation GetParameterRepresentation(int parameter) { |
| 59 | return RepresentationFromType(descriptor_.GetParameterType(parameter)); |
| 60 | } |
| 61 | bool IsParameterCountRegister(int index) const { |
| 62 | return descriptor_.GetRegisterParameter(index) |
| 63 | .is(descriptor_.stack_parameter_count()); |
| 64 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 65 | HValue* GetArgumentsLength() { |
| 66 | // This is initialized in BuildGraph() |
| 67 | DCHECK(arguments_length_ != NULL); |
| 68 | return arguments_length_; |
| 69 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 70 | CompilationInfo* info() { return info_; } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 71 | CodeStub* stub() { return info_->code_stub(); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 72 | HContext* context() { return context_; } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 73 | Isolate* isolate() { return info_->isolate(); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 74 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 75 | HLoadNamedField* BuildLoadNamedField(HValue* object, FieldIndex index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 76 | void BuildStoreNamedField(HValue* object, HValue* value, FieldIndex index, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 77 | Representation representation, |
| 78 | bool transition_to_field); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 79 | |
| 80 | enum ArgumentClass { |
| 81 | NONE, |
| 82 | SINGLE, |
| 83 | MULTIPLE |
| 84 | }; |
| 85 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 86 | HValue* UnmappedCase(HValue* elements, HValue* key, HValue* value); |
| 87 | HValue* EmitKeyedSloppyArguments(HValue* receiver, HValue* key, |
| 88 | HValue* value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 89 | |
| 90 | HValue* BuildArrayConstructor(ElementsKind kind, |
| 91 | AllocationSiteOverrideMode override_mode, |
| 92 | ArgumentClass argument_class); |
| 93 | HValue* BuildInternalArrayConstructor(ElementsKind kind, |
| 94 | ArgumentClass argument_class); |
| 95 | |
| 96 | // BuildCheckAndInstallOptimizedCode emits code to install the optimized |
| 97 | // function found in the optimized code map at map_index in js_function, if |
| 98 | // the function at map_index matches the given native_context. Builder is |
| 99 | // left in the "Then()" state after the install. |
| 100 | void BuildCheckAndInstallOptimizedCode(HValue* js_function, |
| 101 | HValue* native_context, |
| 102 | IfBuilder* builder, |
| 103 | HValue* optimized_map, |
| 104 | HValue* map_index); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 105 | void BuildInstallOptimizedCode(HValue* js_function, HValue* native_context, |
| 106 | HValue* code_object, HValue* literals); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 107 | void BuildInstallCode(HValue* js_function, HValue* shared_info); |
| 108 | |
| 109 | HInstruction* LoadFromOptimizedCodeMap(HValue* optimized_map, |
| 110 | HValue* iterator, |
| 111 | int field_offset); |
| 112 | void BuildInstallFromOptimizedCodeMap(HValue* js_function, |
| 113 | HValue* shared_info, |
| 114 | HValue* native_context); |
| 115 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 116 | HValue* BuildToString(HValue* input, bool convert); |
| 117 | HValue* BuildToPrimitive(HValue* input, HValue* input_map); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 118 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 119 | private: |
| 120 | HValue* BuildArraySingleArgumentConstructor(JSArrayBuilder* builder); |
| 121 | HValue* BuildArrayNArgumentsConstructor(JSArrayBuilder* builder, |
| 122 | ElementsKind kind); |
| 123 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 124 | base::SmartArrayPointer<HParameter*> parameters_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 125 | HValue* arguments_length_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 126 | CompilationInfo* info_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 127 | CodeStubDescriptor descriptor_; |
| 128 | HContext* context_; |
| 129 | }; |
| 130 | |
| 131 | |
| 132 | bool CodeStubGraphBuilderBase::BuildGraph() { |
| 133 | // Update the static counter each time a new code stub is generated. |
| 134 | isolate()->counters()->code_stubs()->Increment(); |
| 135 | |
| 136 | if (FLAG_trace_hydrogen_stubs) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 137 | const char* name = CodeStub::MajorName(stub()->MajorKey()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | PrintF("-----------------------------------------------------------\n"); |
| 139 | PrintF("Compiling stub %s using hydrogen\n", name); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 140 | isolate()->GetHTracer()->TraceCompilation(info()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 141 | } |
| 142 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 143 | int param_count = GetParameterCount(); |
| 144 | int register_param_count = GetRegisterParameterCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 145 | HEnvironment* start_environment = graph()->start_environment(); |
| 146 | HBasicBlock* next_block = CreateBasicBlock(start_environment); |
| 147 | Goto(next_block); |
| 148 | next_block->SetJoinId(BailoutId::StubEntry()); |
| 149 | set_current_block(next_block); |
| 150 | |
| 151 | bool runtime_stack_params = descriptor_.stack_parameter_count().is_valid(); |
| 152 | HInstruction* stack_parameter_count = NULL; |
| 153 | for (int i = 0; i < param_count; ++i) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 154 | Representation r = GetParameterRepresentation(i); |
| 155 | HParameter* param; |
| 156 | if (i >= register_param_count) { |
| 157 | param = Add<HParameter>(i - register_param_count, |
| 158 | HParameter::STACK_PARAMETER, r); |
| 159 | } else { |
| 160 | param = Add<HParameter>(i, HParameter::REGISTER_PARAMETER, r); |
| 161 | start_environment->Bind(i, param); |
| 162 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 163 | parameters_[i] = param; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 164 | if (i < register_param_count && IsParameterCountRegister(i)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 165 | param->set_type(HType::Smi()); |
| 166 | stack_parameter_count = param; |
| 167 | arguments_length_ = stack_parameter_count; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | DCHECK(!runtime_stack_params || arguments_length_ != NULL); |
| 172 | if (!runtime_stack_params) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 173 | stack_parameter_count = |
| 174 | Add<HConstant>(param_count - register_param_count - 1); |
| 175 | // graph()->GetConstantMinus1(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 176 | arguments_length_ = graph()->GetConstant0(); |
| 177 | } |
| 178 | |
| 179 | context_ = Add<HContext>(); |
| 180 | start_environment->BindContext(context_); |
| 181 | |
| 182 | Add<HSimulate>(BailoutId::StubEntry()); |
| 183 | |
| 184 | NoObservableSideEffectsScope no_effects(this); |
| 185 | |
| 186 | HValue* return_value = BuildCodeStub(); |
| 187 | |
| 188 | // We might have extra expressions to pop from the stack in addition to the |
| 189 | // arguments above. |
| 190 | HInstruction* stack_pop_count = stack_parameter_count; |
| 191 | if (descriptor_.function_mode() == JS_FUNCTION_STUB_MODE) { |
| 192 | if (!stack_parameter_count->IsConstant() && |
| 193 | descriptor_.hint_stack_parameter_count() < 0) { |
| 194 | HInstruction* constant_one = graph()->GetConstant1(); |
| 195 | stack_pop_count = AddUncasted<HAdd>(stack_parameter_count, constant_one); |
| 196 | stack_pop_count->ClearFlag(HValue::kCanOverflow); |
| 197 | // TODO(mvstanton): verify that stack_parameter_count+1 really fits in a |
| 198 | // smi. |
| 199 | } else { |
| 200 | int count = descriptor_.hint_stack_parameter_count(); |
| 201 | stack_pop_count = Add<HConstant>(count); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | if (current_block() != NULL) { |
| 206 | HReturn* hreturn_instruction = New<HReturn>(return_value, |
| 207 | stack_pop_count); |
| 208 | FinishCurrentBlock(hreturn_instruction); |
| 209 | } |
| 210 | return true; |
| 211 | } |
| 212 | |
| 213 | |
| 214 | template <class Stub> |
| 215 | class CodeStubGraphBuilder: public CodeStubGraphBuilderBase { |
| 216 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 217 | explicit CodeStubGraphBuilder(CompilationInfo* info) |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 218 | : CodeStubGraphBuilderBase(info) {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 219 | |
| 220 | protected: |
| 221 | virtual HValue* BuildCodeStub() { |
| 222 | if (casted_stub()->IsUninitialized()) { |
| 223 | return BuildCodeUninitializedStub(); |
| 224 | } else { |
| 225 | return BuildCodeInitializedStub(); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | virtual HValue* BuildCodeInitializedStub() { |
| 230 | UNIMPLEMENTED(); |
| 231 | return NULL; |
| 232 | } |
| 233 | |
| 234 | virtual HValue* BuildCodeUninitializedStub() { |
| 235 | // Force a deopt that falls back to the runtime. |
| 236 | HValue* undefined = graph()->GetConstantUndefined(); |
| 237 | IfBuilder builder(this); |
| 238 | builder.IfNot<HCompareObjectEqAndBranch, HValue*>(undefined, undefined); |
| 239 | builder.Then(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 240 | builder.ElseDeopt(Deoptimizer::kForcedDeoptToRuntime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 241 | return undefined; |
| 242 | } |
| 243 | |
| 244 | Stub* casted_stub() { return static_cast<Stub*>(stub()); } |
| 245 | }; |
| 246 | |
| 247 | |
| 248 | Handle<Code> HydrogenCodeStub::GenerateLightweightMissCode( |
| 249 | ExternalReference miss) { |
| 250 | Factory* factory = isolate()->factory(); |
| 251 | |
| 252 | // Generate the new code. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 253 | MacroAssembler masm(isolate(), NULL, 256, CodeObjectRequired::kYes); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 254 | |
| 255 | { |
| 256 | // Update the static counter each time a new code stub is generated. |
| 257 | isolate()->counters()->code_stubs()->Increment(); |
| 258 | |
| 259 | // Generate the code for the stub. |
| 260 | masm.set_generating_stub(true); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 261 | // TODO(yangguo): remove this once we can serialize IC stubs. |
| 262 | masm.enable_serializer(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 263 | NoCurrentFrameScope scope(&masm); |
| 264 | GenerateLightweightMiss(&masm, miss); |
| 265 | } |
| 266 | |
| 267 | // Create the code object. |
| 268 | CodeDesc desc; |
| 269 | masm.GetCode(&desc); |
| 270 | |
| 271 | // Copy the generated code into a heap object. |
| 272 | Code::Flags flags = Code::ComputeFlags( |
| 273 | GetCodeKind(), |
| 274 | GetICState(), |
| 275 | GetExtraICState(), |
| 276 | GetStubType()); |
| 277 | Handle<Code> new_object = factory->NewCode( |
| 278 | desc, flags, masm.CodeObject(), NeedsImmovableCode()); |
| 279 | return new_object; |
| 280 | } |
| 281 | |
| 282 | |
| 283 | template <class Stub> |
| 284 | static Handle<Code> DoGenerateCode(Stub* stub) { |
| 285 | Isolate* isolate = stub->isolate(); |
| 286 | CodeStubDescriptor descriptor(stub); |
| 287 | |
| 288 | // If we are uninitialized we can use a light-weight stub to enter |
| 289 | // the runtime that is significantly faster than using the standard |
| 290 | // stub-failure deopt mechanism. |
| 291 | if (stub->IsUninitialized() && descriptor.has_miss_handler()) { |
| 292 | DCHECK(!descriptor.stack_parameter_count().is_valid()); |
| 293 | return stub->GenerateLightweightMissCode(descriptor.miss_handler()); |
| 294 | } |
| 295 | base::ElapsedTimer timer; |
| 296 | if (FLAG_profile_hydrogen_code_stub_compilation) { |
| 297 | timer.Start(); |
| 298 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 299 | Zone zone; |
| 300 | CompilationInfo info(stub, isolate, &zone); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 301 | CodeStubGraphBuilder<Stub> builder(&info); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | LChunk* chunk = OptimizeGraph(builder.CreateGraph()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 303 | Handle<Code> code = chunk->Codegen(); |
| 304 | if (FLAG_profile_hydrogen_code_stub_compilation) { |
| 305 | OFStream os(stdout); |
| 306 | os << "[Lazy compilation of " << stub << " took " |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 307 | << timer.Elapsed().InMillisecondsF() << " ms]" << std::endl; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 308 | } |
| 309 | return code; |
| 310 | } |
| 311 | |
| 312 | |
| 313 | template <> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 314 | HValue* CodeStubGraphBuilder<NumberToStringStub>::BuildCodeStub() { |
| 315 | info()->MarkAsSavesCallerDoubles(); |
| 316 | HValue* number = GetParameter(NumberToStringStub::kNumber); |
| 317 | return BuildNumberToString(number, Type::Number(zone())); |
| 318 | } |
| 319 | |
| 320 | |
| 321 | Handle<Code> NumberToStringStub::GenerateCode() { |
| 322 | return DoGenerateCode(this); |
| 323 | } |
| 324 | |
| 325 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 326 | // Returns the type string of a value; see ECMA-262, 11.4.3 (p 47). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 327 | template <> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 328 | HValue* CodeStubGraphBuilder<TypeofStub>::BuildCodeStub() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | Factory* factory = isolate()->factory(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 330 | HConstant* number_string = Add<HConstant>(factory->number_string()); |
| 331 | HValue* object = GetParameter(TypeofStub::kObject); |
| 332 | |
| 333 | IfBuilder is_smi(this); |
| 334 | HValue* smi_check = is_smi.If<HIsSmiAndBranch>(object); |
| 335 | is_smi.Then(); |
| 336 | { Push(number_string); } |
| 337 | is_smi.Else(); |
| 338 | { |
| 339 | IfBuilder is_number(this); |
| 340 | is_number.If<HCompareMap>(object, isolate()->factory()->heap_number_map()); |
| 341 | is_number.Then(); |
| 342 | { Push(number_string); } |
| 343 | is_number.Else(); |
| 344 | { |
| 345 | HValue* map = AddLoadMap(object, smi_check); |
| 346 | HValue* instance_type = Add<HLoadNamedField>( |
| 347 | map, nullptr, HObjectAccess::ForMapInstanceType()); |
| 348 | IfBuilder is_string(this); |
| 349 | is_string.If<HCompareNumericAndBranch>( |
| 350 | instance_type, Add<HConstant>(FIRST_NONSTRING_TYPE), Token::LT); |
| 351 | is_string.Then(); |
| 352 | { Push(Add<HConstant>(factory->string_string())); } |
| 353 | is_string.Else(); |
| 354 | { |
| 355 | HConstant* object_string = Add<HConstant>(factory->object_string()); |
| 356 | IfBuilder is_oddball(this); |
| 357 | is_oddball.If<HCompareNumericAndBranch>( |
| 358 | instance_type, Add<HConstant>(ODDBALL_TYPE), Token::EQ); |
| 359 | is_oddball.Then(); |
| 360 | { |
| 361 | Push(Add<HLoadNamedField>(object, nullptr, |
| 362 | HObjectAccess::ForOddballTypeOf())); |
| 363 | } |
| 364 | is_oddball.Else(); |
| 365 | { |
| 366 | IfBuilder is_symbol(this); |
| 367 | is_symbol.If<HCompareNumericAndBranch>( |
| 368 | instance_type, Add<HConstant>(SYMBOL_TYPE), Token::EQ); |
| 369 | is_symbol.Then(); |
| 370 | { Push(Add<HConstant>(factory->symbol_string())); } |
| 371 | is_symbol.Else(); |
| 372 | { |
| 373 | HValue* bit_field = Add<HLoadNamedField>( |
| 374 | map, nullptr, HObjectAccess::ForMapBitField()); |
| 375 | HValue* bit_field_masked = AddUncasted<HBitwise>( |
| 376 | Token::BIT_AND, bit_field, |
| 377 | Add<HConstant>((1 << Map::kIsCallable) | |
| 378 | (1 << Map::kIsUndetectable))); |
| 379 | IfBuilder is_function(this); |
| 380 | is_function.If<HCompareNumericAndBranch>( |
| 381 | bit_field_masked, Add<HConstant>(1 << Map::kIsCallable), |
| 382 | Token::EQ); |
| 383 | is_function.Then(); |
| 384 | { Push(Add<HConstant>(factory->function_string())); } |
| 385 | is_function.Else(); |
| 386 | { |
| 387 | #define SIMD128_BUILDER_OPEN(TYPE, Type, type, lane_count, lane_type) \ |
| 388 | IfBuilder is_##type(this); \ |
| 389 | is_##type.If<HCompareObjectEqAndBranch>( \ |
| 390 | map, Add<HConstant>(factory->type##_map())); \ |
| 391 | is_##type.Then(); \ |
| 392 | { Push(Add<HConstant>(factory->type##_string())); } \ |
| 393 | is_##type.Else(); { |
| 394 | SIMD128_TYPES(SIMD128_BUILDER_OPEN) |
| 395 | #undef SIMD128_BUILDER_OPEN |
| 396 | // Is it an undetectable object? |
| 397 | IfBuilder is_undetectable(this); |
| 398 | is_undetectable.If<HCompareNumericAndBranch>( |
| 399 | bit_field_masked, graph()->GetConstant0(), Token::NE); |
| 400 | is_undetectable.Then(); |
| 401 | { |
| 402 | // typeof an undetectable object is 'undefined'. |
| 403 | Push(Add<HConstant>(factory->undefined_string())); |
| 404 | } |
| 405 | is_undetectable.Else(); |
| 406 | { |
| 407 | // For any kind of object not handled above, the spec rule for |
| 408 | // host objects gives that it is okay to return "object". |
| 409 | Push(object_string); |
| 410 | } |
| 411 | #define SIMD128_BUILDER_CLOSE(TYPE, Type, type, lane_count, lane_type) } |
| 412 | SIMD128_TYPES(SIMD128_BUILDER_CLOSE) |
| 413 | #undef SIMD128_BUILDER_CLOSE |
| 414 | } |
| 415 | is_function.End(); |
| 416 | } |
| 417 | is_symbol.End(); |
| 418 | } |
| 419 | is_oddball.End(); |
| 420 | } |
| 421 | is_string.End(); |
| 422 | } |
| 423 | is_number.End(); |
| 424 | } |
| 425 | is_smi.End(); |
| 426 | |
| 427 | return environment()->Pop(); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | Handle<Code> TypeofStub::GenerateCode() { return DoGenerateCode(this); } |
| 432 | |
| 433 | |
| 434 | template <> |
| 435 | HValue* CodeStubGraphBuilder<FastCloneRegExpStub>::BuildCodeStub() { |
| 436 | HValue* closure = GetParameter(0); |
| 437 | HValue* literal_index = GetParameter(1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 438 | |
| 439 | // This stub is very performance sensitive, the generated code must be tuned |
| 440 | // so that it doesn't build and eager frame. |
| 441 | info()->MarkMustNotHaveEagerFrame(); |
| 442 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 443 | HValue* literals_array = Add<HLoadNamedField>( |
| 444 | closure, nullptr, HObjectAccess::ForLiteralsPointer()); |
| 445 | HInstruction* boilerplate = Add<HLoadKeyed>( |
| 446 | literals_array, literal_index, nullptr, nullptr, FAST_ELEMENTS, |
| 447 | NEVER_RETURN_HOLE, LiteralsArray::kOffsetToFirstLiteral - kHeapObjectTag); |
| 448 | |
| 449 | IfBuilder if_notundefined(this); |
| 450 | if_notundefined.IfNot<HCompareObjectEqAndBranch>( |
| 451 | boilerplate, graph()->GetConstantUndefined()); |
| 452 | if_notundefined.Then(); |
| 453 | { |
| 454 | int result_size = |
| 455 | JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 456 | HValue* result = |
| 457 | Add<HAllocate>(Add<HConstant>(result_size), HType::JSObject(), |
| 458 | NOT_TENURED, JS_REGEXP_TYPE); |
| 459 | Add<HStoreNamedField>( |
| 460 | result, HObjectAccess::ForMap(), |
| 461 | Add<HLoadNamedField>(boilerplate, nullptr, HObjectAccess::ForMap())); |
| 462 | Add<HStoreNamedField>( |
| 463 | result, HObjectAccess::ForPropertiesPointer(), |
| 464 | Add<HLoadNamedField>(boilerplate, nullptr, |
| 465 | HObjectAccess::ForPropertiesPointer())); |
| 466 | Add<HStoreNamedField>( |
| 467 | result, HObjectAccess::ForElementsPointer(), |
| 468 | Add<HLoadNamedField>(boilerplate, nullptr, |
| 469 | HObjectAccess::ForElementsPointer())); |
| 470 | for (int offset = JSObject::kHeaderSize; offset < result_size; |
| 471 | offset += kPointerSize) { |
| 472 | HObjectAccess access = HObjectAccess::ForObservableJSObjectOffset(offset); |
| 473 | Add<HStoreNamedField>(result, access, |
| 474 | Add<HLoadNamedField>(boilerplate, nullptr, access)); |
| 475 | } |
| 476 | Push(result); |
| 477 | } |
| 478 | if_notundefined.ElseDeopt(Deoptimizer::kUninitializedBoilerplateInFastClone); |
| 479 | if_notundefined.End(); |
| 480 | |
| 481 | return Pop(); |
| 482 | } |
| 483 | |
| 484 | |
| 485 | Handle<Code> FastCloneRegExpStub::GenerateCode() { |
| 486 | return DoGenerateCode(this); |
| 487 | } |
| 488 | |
| 489 | |
| 490 | template <> |
| 491 | HValue* CodeStubGraphBuilder<FastCloneShallowArrayStub>::BuildCodeStub() { |
| 492 | Factory* factory = isolate()->factory(); |
| 493 | HValue* undefined = graph()->GetConstantUndefined(); |
| 494 | AllocationSiteMode alloc_site_mode = casted_stub()->allocation_site_mode(); |
| 495 | HValue* closure = GetParameter(0); |
| 496 | HValue* literal_index = GetParameter(1); |
| 497 | |
| 498 | // This stub is very performance sensitive, the generated code must be tuned |
| 499 | // so that it doesn't build and eager frame. |
| 500 | info()->MarkMustNotHaveEagerFrame(); |
| 501 | |
| 502 | HValue* literals_array = Add<HLoadNamedField>( |
| 503 | closure, nullptr, HObjectAccess::ForLiteralsPointer()); |
| 504 | |
| 505 | HInstruction* allocation_site = Add<HLoadKeyed>( |
| 506 | literals_array, literal_index, nullptr, nullptr, FAST_ELEMENTS, |
| 507 | NEVER_RETURN_HOLE, LiteralsArray::kOffsetToFirstLiteral - kHeapObjectTag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 508 | IfBuilder checker(this); |
| 509 | checker.IfNot<HCompareObjectEqAndBranch, HValue*>(allocation_site, |
| 510 | undefined); |
| 511 | checker.Then(); |
| 512 | |
| 513 | HObjectAccess access = HObjectAccess::ForAllocationSiteOffset( |
| 514 | AllocationSite::kTransitionInfoOffset); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 515 | HInstruction* boilerplate = |
| 516 | Add<HLoadNamedField>(allocation_site, nullptr, access); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 517 | HValue* elements = AddLoadElements(boilerplate); |
| 518 | HValue* capacity = AddLoadFixedArrayLength(elements); |
| 519 | IfBuilder zero_capacity(this); |
| 520 | zero_capacity.If<HCompareNumericAndBranch>(capacity, graph()->GetConstant0(), |
| 521 | Token::EQ); |
| 522 | zero_capacity.Then(); |
| 523 | Push(BuildCloneShallowArrayEmpty(boilerplate, |
| 524 | allocation_site, |
| 525 | alloc_site_mode)); |
| 526 | zero_capacity.Else(); |
| 527 | IfBuilder if_fixed_cow(this); |
| 528 | if_fixed_cow.If<HCompareMap>(elements, factory->fixed_cow_array_map()); |
| 529 | if_fixed_cow.Then(); |
| 530 | Push(BuildCloneShallowArrayCow(boilerplate, |
| 531 | allocation_site, |
| 532 | alloc_site_mode, |
| 533 | FAST_ELEMENTS)); |
| 534 | if_fixed_cow.Else(); |
| 535 | IfBuilder if_fixed(this); |
| 536 | if_fixed.If<HCompareMap>(elements, factory->fixed_array_map()); |
| 537 | if_fixed.Then(); |
| 538 | Push(BuildCloneShallowArrayNonEmpty(boilerplate, |
| 539 | allocation_site, |
| 540 | alloc_site_mode, |
| 541 | FAST_ELEMENTS)); |
| 542 | |
| 543 | if_fixed.Else(); |
| 544 | Push(BuildCloneShallowArrayNonEmpty(boilerplate, |
| 545 | allocation_site, |
| 546 | alloc_site_mode, |
| 547 | FAST_DOUBLE_ELEMENTS)); |
| 548 | if_fixed.End(); |
| 549 | if_fixed_cow.End(); |
| 550 | zero_capacity.End(); |
| 551 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 552 | checker.ElseDeopt(Deoptimizer::kUninitializedBoilerplateLiterals); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 553 | checker.End(); |
| 554 | |
| 555 | return environment()->Pop(); |
| 556 | } |
| 557 | |
| 558 | |
| 559 | Handle<Code> FastCloneShallowArrayStub::GenerateCode() { |
| 560 | return DoGenerateCode(this); |
| 561 | } |
| 562 | |
| 563 | |
| 564 | template <> |
| 565 | HValue* CodeStubGraphBuilder<FastCloneShallowObjectStub>::BuildCodeStub() { |
| 566 | HValue* undefined = graph()->GetConstantUndefined(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 567 | HValue* closure = GetParameter(0); |
| 568 | HValue* literal_index = GetParameter(1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 569 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 570 | HValue* literals_array = Add<HLoadNamedField>( |
| 571 | closure, nullptr, HObjectAccess::ForLiteralsPointer()); |
| 572 | |
| 573 | HInstruction* allocation_site = Add<HLoadKeyed>( |
| 574 | literals_array, literal_index, nullptr, nullptr, FAST_ELEMENTS, |
| 575 | NEVER_RETURN_HOLE, LiteralsArray::kOffsetToFirstLiteral - kHeapObjectTag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 576 | |
| 577 | IfBuilder checker(this); |
| 578 | checker.IfNot<HCompareObjectEqAndBranch, HValue*>(allocation_site, |
| 579 | undefined); |
| 580 | checker.And(); |
| 581 | |
| 582 | HObjectAccess access = HObjectAccess::ForAllocationSiteOffset( |
| 583 | AllocationSite::kTransitionInfoOffset); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 584 | HInstruction* boilerplate = |
| 585 | Add<HLoadNamedField>(allocation_site, nullptr, access); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 586 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 587 | int length = casted_stub()->length(); |
| 588 | if (length == 0) { |
| 589 | // Empty objects have some slack added to them. |
| 590 | length = JSObject::kInitialGlobalObjectUnusedPropertiesCount; |
| 591 | } |
| 592 | int size = JSObject::kHeaderSize + length * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 593 | int object_size = size; |
| 594 | if (FLAG_allocation_site_pretenuring) { |
| 595 | size += AllocationMemento::kSize; |
| 596 | } |
| 597 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 598 | HValue* boilerplate_map = |
| 599 | Add<HLoadNamedField>(boilerplate, nullptr, HObjectAccess::ForMap()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 600 | HValue* boilerplate_size = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 601 | boilerplate_map, nullptr, HObjectAccess::ForMapInstanceSize()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 602 | HValue* size_in_words = Add<HConstant>(object_size >> kPointerSizeLog2); |
| 603 | checker.If<HCompareNumericAndBranch>(boilerplate_size, |
| 604 | size_in_words, Token::EQ); |
| 605 | checker.Then(); |
| 606 | |
| 607 | HValue* size_in_bytes = Add<HConstant>(size); |
| 608 | |
| 609 | HInstruction* object = Add<HAllocate>(size_in_bytes, HType::JSObject(), |
| 610 | NOT_TENURED, JS_OBJECT_TYPE); |
| 611 | |
| 612 | for (int i = 0; i < object_size; i += kPointerSize) { |
| 613 | HObjectAccess access = HObjectAccess::ForObservableJSObjectOffset(i); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 614 | Add<HStoreNamedField>(object, access, |
| 615 | Add<HLoadNamedField>(boilerplate, nullptr, access)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | DCHECK(FLAG_allocation_site_pretenuring || (size == object_size)); |
| 619 | if (FLAG_allocation_site_pretenuring) { |
| 620 | BuildCreateAllocationMemento( |
| 621 | object, Add<HConstant>(object_size), allocation_site); |
| 622 | } |
| 623 | |
| 624 | environment()->Push(object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 625 | checker.ElseDeopt(Deoptimizer::kUninitializedBoilerplateInFastClone); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 626 | checker.End(); |
| 627 | |
| 628 | return environment()->Pop(); |
| 629 | } |
| 630 | |
| 631 | |
| 632 | Handle<Code> FastCloneShallowObjectStub::GenerateCode() { |
| 633 | return DoGenerateCode(this); |
| 634 | } |
| 635 | |
| 636 | |
| 637 | template <> |
| 638 | HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 639 | // This stub is performance sensitive, the generated code must be tuned |
| 640 | // so that it doesn't build an eager frame. |
| 641 | info()->MarkMustNotHaveEagerFrame(); |
| 642 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 643 | HValue* size = Add<HConstant>(AllocationSite::kSize); |
| 644 | HInstruction* object = Add<HAllocate>(size, HType::JSObject(), TENURED, |
| 645 | JS_OBJECT_TYPE); |
| 646 | |
| 647 | // Store the map |
| 648 | Handle<Map> allocation_site_map = isolate()->factory()->allocation_site_map(); |
| 649 | AddStoreMapConstant(object, allocation_site_map); |
| 650 | |
| 651 | // Store the payload (smi elements kind) |
| 652 | HValue* initial_elements_kind = Add<HConstant>(GetInitialFastElementsKind()); |
| 653 | Add<HStoreNamedField>(object, |
| 654 | HObjectAccess::ForAllocationSiteOffset( |
| 655 | AllocationSite::kTransitionInfoOffset), |
| 656 | initial_elements_kind); |
| 657 | |
| 658 | // Unlike literals, constructed arrays don't have nested sites |
| 659 | Add<HStoreNamedField>(object, |
| 660 | HObjectAccess::ForAllocationSiteOffset( |
| 661 | AllocationSite::kNestedSiteOffset), |
| 662 | graph()->GetConstant0()); |
| 663 | |
| 664 | // Pretenuring calculation field. |
| 665 | Add<HStoreNamedField>(object, |
| 666 | HObjectAccess::ForAllocationSiteOffset( |
| 667 | AllocationSite::kPretenureDataOffset), |
| 668 | graph()->GetConstant0()); |
| 669 | |
| 670 | // Pretenuring memento creation count field. |
| 671 | Add<HStoreNamedField>(object, |
| 672 | HObjectAccess::ForAllocationSiteOffset( |
| 673 | AllocationSite::kPretenureCreateCountOffset), |
| 674 | graph()->GetConstant0()); |
| 675 | |
| 676 | // Store an empty fixed array for the code dependency. |
| 677 | HConstant* empty_fixed_array = |
| 678 | Add<HConstant>(isolate()->factory()->empty_fixed_array()); |
| 679 | Add<HStoreNamedField>( |
| 680 | object, |
| 681 | HObjectAccess::ForAllocationSiteOffset( |
| 682 | AllocationSite::kDependentCodeOffset), |
| 683 | empty_fixed_array); |
| 684 | |
| 685 | // Link the object to the allocation site list |
| 686 | HValue* site_list = Add<HConstant>( |
| 687 | ExternalReference::allocation_sites_list_address(isolate())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 688 | HValue* site = Add<HLoadNamedField>(site_list, nullptr, |
| 689 | HObjectAccess::ForAllocationSiteList()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 690 | // TODO(mvstanton): This is a store to a weak pointer, which we may want to |
| 691 | // mark as such in order to skip the write barrier, once we have a unified |
| 692 | // system for weakness. For now we decided to keep it like this because having |
| 693 | // an initial write barrier backed store makes this pointer strong until the |
| 694 | // next GC, and allocation sites are designed to survive several GCs anyway. |
| 695 | Add<HStoreNamedField>( |
| 696 | object, |
| 697 | HObjectAccess::ForAllocationSiteOffset(AllocationSite::kWeakNextOffset), |
| 698 | site); |
| 699 | Add<HStoreNamedField>(site_list, HObjectAccess::ForAllocationSiteList(), |
| 700 | object); |
| 701 | |
| 702 | HInstruction* feedback_vector = GetParameter(0); |
| 703 | HInstruction* slot = GetParameter(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 704 | Add<HStoreKeyed>(feedback_vector, slot, object, nullptr, FAST_ELEMENTS, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 705 | INITIALIZING_STORE); |
| 706 | return feedback_vector; |
| 707 | } |
| 708 | |
| 709 | |
| 710 | Handle<Code> CreateAllocationSiteStub::GenerateCode() { |
| 711 | return DoGenerateCode(this); |
| 712 | } |
| 713 | |
| 714 | |
| 715 | template <> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 716 | HValue* CodeStubGraphBuilder<CreateWeakCellStub>::BuildCodeStub() { |
| 717 | // This stub is performance sensitive, the generated code must be tuned |
| 718 | // so that it doesn't build an eager frame. |
| 719 | info()->MarkMustNotHaveEagerFrame(); |
| 720 | |
| 721 | HValue* size = Add<HConstant>(WeakCell::kSize); |
| 722 | HInstruction* object = |
| 723 | Add<HAllocate>(size, HType::JSObject(), TENURED, JS_OBJECT_TYPE); |
| 724 | |
| 725 | Handle<Map> weak_cell_map = isolate()->factory()->weak_cell_map(); |
| 726 | AddStoreMapConstant(object, weak_cell_map); |
| 727 | |
| 728 | HInstruction* value = GetParameter(CreateWeakCellDescriptor::kValueIndex); |
| 729 | Add<HStoreNamedField>(object, HObjectAccess::ForWeakCellValue(), value); |
| 730 | Add<HStoreNamedField>(object, HObjectAccess::ForWeakCellNext(), |
| 731 | graph()->GetConstantHole()); |
| 732 | |
| 733 | HInstruction* feedback_vector = |
| 734 | GetParameter(CreateWeakCellDescriptor::kVectorIndex); |
| 735 | HInstruction* slot = GetParameter(CreateWeakCellDescriptor::kSlotIndex); |
| 736 | Add<HStoreKeyed>(feedback_vector, slot, object, nullptr, FAST_ELEMENTS, |
| 737 | INITIALIZING_STORE); |
| 738 | return graph()->GetConstant0(); |
| 739 | } |
| 740 | |
| 741 | |
| 742 | Handle<Code> CreateWeakCellStub::GenerateCode() { return DoGenerateCode(this); } |
| 743 | |
| 744 | |
| 745 | template <> |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 746 | HValue* CodeStubGraphBuilder<LoadScriptContextFieldStub>::BuildCodeStub() { |
| 747 | int context_index = casted_stub()->context_index(); |
| 748 | int slot_index = casted_stub()->slot_index(); |
| 749 | |
| 750 | HValue* script_context = BuildGetScriptContext(context_index); |
| 751 | return Add<HLoadNamedField>(script_context, nullptr, |
| 752 | HObjectAccess::ForContextSlot(slot_index)); |
| 753 | } |
| 754 | |
| 755 | |
| 756 | Handle<Code> LoadScriptContextFieldStub::GenerateCode() { |
| 757 | return DoGenerateCode(this); |
| 758 | } |
| 759 | |
| 760 | |
| 761 | template <> |
| 762 | HValue* CodeStubGraphBuilder<StoreScriptContextFieldStub>::BuildCodeStub() { |
| 763 | int context_index = casted_stub()->context_index(); |
| 764 | int slot_index = casted_stub()->slot_index(); |
| 765 | |
| 766 | HValue* script_context = BuildGetScriptContext(context_index); |
| 767 | Add<HStoreNamedField>(script_context, |
| 768 | HObjectAccess::ForContextSlot(slot_index), |
| 769 | GetParameter(2), STORE_TO_INITIALIZED_ENTRY); |
| 770 | return GetParameter(2); |
| 771 | } |
| 772 | |
| 773 | |
| 774 | Handle<Code> StoreScriptContextFieldStub::GenerateCode() { |
| 775 | return DoGenerateCode(this); |
| 776 | } |
| 777 | |
| 778 | |
| 779 | template <> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 780 | HValue* CodeStubGraphBuilder<GrowArrayElementsStub>::BuildCodeStub() { |
| 781 | ElementsKind kind = casted_stub()->elements_kind(); |
| 782 | if (IsFastDoubleElementsKind(kind)) { |
| 783 | info()->MarkAsSavesCallerDoubles(); |
| 784 | } |
| 785 | |
| 786 | HValue* object = GetParameter(GrowArrayElementsDescriptor::kObjectIndex); |
| 787 | HValue* key = GetParameter(GrowArrayElementsDescriptor::kKeyIndex); |
| 788 | |
| 789 | HValue* elements = AddLoadElements(object); |
| 790 | HValue* current_capacity = Add<HLoadNamedField>( |
| 791 | elements, nullptr, HObjectAccess::ForFixedArrayLength()); |
| 792 | |
| 793 | HValue* length = |
| 794 | casted_stub()->is_js_array() |
| 795 | ? Add<HLoadNamedField>(object, static_cast<HValue*>(NULL), |
| 796 | HObjectAccess::ForArrayLength(kind)) |
| 797 | : current_capacity; |
| 798 | |
| 799 | return BuildCheckAndGrowElementsCapacity(object, elements, kind, length, |
| 800 | current_capacity, key); |
| 801 | } |
| 802 | |
| 803 | |
| 804 | Handle<Code> GrowArrayElementsStub::GenerateCode() { |
| 805 | return DoGenerateCode(this); |
| 806 | } |
| 807 | |
| 808 | |
| 809 | template <> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 810 | HValue* CodeStubGraphBuilder<LoadFastElementStub>::BuildCodeStub() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 811 | LoadKeyedHoleMode hole_mode = casted_stub()->convert_hole_to_undefined() |
| 812 | ? CONVERT_HOLE_TO_UNDEFINED |
| 813 | : NEVER_RETURN_HOLE; |
| 814 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 815 | HInstruction* load = BuildUncheckedMonomorphicElementAccess( |
| 816 | GetParameter(LoadDescriptor::kReceiverIndex), |
| 817 | GetParameter(LoadDescriptor::kNameIndex), NULL, |
| 818 | casted_stub()->is_js_array(), casted_stub()->elements_kind(), LOAD, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 819 | hole_mode, STANDARD_STORE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 820 | return load; |
| 821 | } |
| 822 | |
| 823 | |
| 824 | Handle<Code> LoadFastElementStub::GenerateCode() { |
| 825 | return DoGenerateCode(this); |
| 826 | } |
| 827 | |
| 828 | |
| 829 | HLoadNamedField* CodeStubGraphBuilderBase::BuildLoadNamedField( |
| 830 | HValue* object, FieldIndex index) { |
| 831 | Representation representation = index.is_double() |
| 832 | ? Representation::Double() |
| 833 | : Representation::Tagged(); |
| 834 | int offset = index.offset(); |
| 835 | HObjectAccess access = index.is_inobject() |
| 836 | ? HObjectAccess::ForObservableJSObjectOffset(offset, representation) |
| 837 | : HObjectAccess::ForBackingStoreOffset(offset, representation); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 838 | if (index.is_double() && |
| 839 | (!FLAG_unbox_double_fields || !index.is_inobject())) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 840 | // Load the heap number. |
| 841 | object = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 842 | object, nullptr, access.WithRepresentation(Representation::Tagged())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 843 | // Load the double value from it. |
| 844 | access = HObjectAccess::ForHeapNumberValue(); |
| 845 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 846 | return Add<HLoadNamedField>(object, nullptr, access); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | |
| 850 | template<> |
| 851 | HValue* CodeStubGraphBuilder<LoadFieldStub>::BuildCodeStub() { |
| 852 | return BuildLoadNamedField(GetParameter(0), casted_stub()->index()); |
| 853 | } |
| 854 | |
| 855 | |
| 856 | Handle<Code> LoadFieldStub::GenerateCode() { |
| 857 | return DoGenerateCode(this); |
| 858 | } |
| 859 | |
| 860 | |
| 861 | template <> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 862 | HValue* CodeStubGraphBuilder<ArrayBufferViewLoadFieldStub>::BuildCodeStub() { |
| 863 | return BuildArrayBufferViewFieldAccessor(GetParameter(0), nullptr, |
| 864 | casted_stub()->index()); |
| 865 | } |
| 866 | |
| 867 | |
| 868 | Handle<Code> ArrayBufferViewLoadFieldStub::GenerateCode() { |
| 869 | return DoGenerateCode(this); |
| 870 | } |
| 871 | |
| 872 | |
| 873 | template <> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 874 | HValue* CodeStubGraphBuilder<LoadConstantStub>::BuildCodeStub() { |
| 875 | HValue* map = AddLoadMap(GetParameter(0), NULL); |
| 876 | HObjectAccess descriptors_access = HObjectAccess::ForObservableJSObjectOffset( |
| 877 | Map::kDescriptorsOffset, Representation::Tagged()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 878 | HValue* descriptors = Add<HLoadNamedField>(map, nullptr, descriptors_access); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 879 | HObjectAccess value_access = HObjectAccess::ForObservableJSObjectOffset( |
| 880 | DescriptorArray::GetValueOffset(casted_stub()->constant_index())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 881 | return Add<HLoadNamedField>(descriptors, nullptr, value_access); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 882 | } |
| 883 | |
| 884 | |
| 885 | Handle<Code> LoadConstantStub::GenerateCode() { return DoGenerateCode(this); } |
| 886 | |
| 887 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 888 | HValue* CodeStubGraphBuilderBase::UnmappedCase(HValue* elements, HValue* key, |
| 889 | HValue* value) { |
| 890 | HValue* result = NULL; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 891 | HInstruction* backing_store = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 892 | Add<HLoadKeyed>(elements, graph()->GetConstant1(), nullptr, nullptr, |
| 893 | FAST_ELEMENTS, ALLOW_RETURN_HOLE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 894 | Add<HCheckMaps>(backing_store, isolate()->factory()->fixed_array_map()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 895 | HValue* backing_store_length = Add<HLoadNamedField>( |
| 896 | backing_store, nullptr, HObjectAccess::ForFixedArrayLength()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 897 | IfBuilder in_unmapped_range(this); |
| 898 | in_unmapped_range.If<HCompareNumericAndBranch>(key, backing_store_length, |
| 899 | Token::LT); |
| 900 | in_unmapped_range.Then(); |
| 901 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 902 | if (value == NULL) { |
| 903 | result = Add<HLoadKeyed>(backing_store, key, nullptr, nullptr, |
| 904 | FAST_HOLEY_ELEMENTS, NEVER_RETURN_HOLE); |
| 905 | } else { |
| 906 | Add<HStoreKeyed>(backing_store, key, value, nullptr, FAST_HOLEY_ELEMENTS); |
| 907 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 908 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 909 | in_unmapped_range.ElseDeopt(Deoptimizer::kOutsideOfRange); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 910 | in_unmapped_range.End(); |
| 911 | return result; |
| 912 | } |
| 913 | |
| 914 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 915 | HValue* CodeStubGraphBuilderBase::EmitKeyedSloppyArguments(HValue* receiver, |
| 916 | HValue* key, |
| 917 | HValue* value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 918 | // Mapped arguments are actual arguments. Unmapped arguments are values added |
| 919 | // to the arguments object after it was created for the call. Mapped arguments |
| 920 | // are stored in the context at indexes given by elements[key + 2]. Unmapped |
| 921 | // arguments are stored as regular indexed properties in the arguments array, |
| 922 | // held at elements[1]. See NewSloppyArguments() in runtime.cc for a detailed |
| 923 | // look at argument object construction. |
| 924 | // |
| 925 | // The sloppy arguments elements array has a special format: |
| 926 | // |
| 927 | // 0: context |
| 928 | // 1: unmapped arguments array |
| 929 | // 2: mapped_index0, |
| 930 | // 3: mapped_index1, |
| 931 | // ... |
| 932 | // |
| 933 | // length is 2 + min(number_of_actual_arguments, number_of_formal_arguments). |
| 934 | // If key + 2 >= elements.length then attempt to look in the unmapped |
| 935 | // arguments array (given by elements[1]) and return the value at key, missing |
| 936 | // to the runtime if the unmapped arguments array is not a fixed array or if |
| 937 | // key >= unmapped_arguments_array.length. |
| 938 | // |
| 939 | // Otherwise, t = elements[key + 2]. If t is the hole, then look up the value |
| 940 | // in the unmapped arguments array, as described above. Otherwise, t is a Smi |
| 941 | // index into the context array given at elements[0]. Return the value at |
| 942 | // context[t]. |
| 943 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 944 | bool is_load = value == NULL; |
| 945 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 946 | key = AddUncasted<HForceRepresentation>(key, Representation::Smi()); |
| 947 | IfBuilder positive_smi(this); |
| 948 | positive_smi.If<HCompareNumericAndBranch>(key, graph()->GetConstant0(), |
| 949 | Token::LT); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 950 | positive_smi.ThenDeopt(Deoptimizer::kKeyIsNegative); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 951 | positive_smi.End(); |
| 952 | |
| 953 | HValue* constant_two = Add<HConstant>(2); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 954 | HValue* elements = AddLoadElements(receiver, nullptr); |
| 955 | HValue* elements_length = Add<HLoadNamedField>( |
| 956 | elements, nullptr, HObjectAccess::ForFixedArrayLength()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 957 | HValue* adjusted_length = AddUncasted<HSub>(elements_length, constant_two); |
| 958 | IfBuilder in_range(this); |
| 959 | in_range.If<HCompareNumericAndBranch>(key, adjusted_length, Token::LT); |
| 960 | in_range.Then(); |
| 961 | { |
| 962 | HValue* index = AddUncasted<HAdd>(key, constant_two); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 963 | HInstruction* mapped_index = |
| 964 | Add<HLoadKeyed>(elements, index, nullptr, nullptr, FAST_HOLEY_ELEMENTS, |
| 965 | ALLOW_RETURN_HOLE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 966 | |
| 967 | IfBuilder is_valid(this); |
| 968 | is_valid.IfNot<HCompareObjectEqAndBranch>(mapped_index, |
| 969 | graph()->GetConstantHole()); |
| 970 | is_valid.Then(); |
| 971 | { |
| 972 | // TODO(mvstanton): I'd like to assert from this point, that if the |
| 973 | // mapped_index is not the hole that it is indeed, a smi. An unnecessary |
| 974 | // smi check is being emitted. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 975 | HValue* the_context = Add<HLoadKeyed>(elements, graph()->GetConstant0(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 976 | nullptr, nullptr, FAST_ELEMENTS); |
| 977 | STATIC_ASSERT(Context::kHeaderSize == FixedArray::kHeaderSize); |
| 978 | if (is_load) { |
| 979 | HValue* result = |
| 980 | Add<HLoadKeyed>(the_context, mapped_index, nullptr, nullptr, |
| 981 | FAST_ELEMENTS, ALLOW_RETURN_HOLE); |
| 982 | environment()->Push(result); |
| 983 | } else { |
| 984 | DCHECK(value != NULL); |
| 985 | Add<HStoreKeyed>(the_context, mapped_index, value, nullptr, |
| 986 | FAST_ELEMENTS); |
| 987 | environment()->Push(value); |
| 988 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 989 | } |
| 990 | is_valid.Else(); |
| 991 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 992 | HValue* result = UnmappedCase(elements, key, value); |
| 993 | environment()->Push(is_load ? result : value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 994 | } |
| 995 | is_valid.End(); |
| 996 | } |
| 997 | in_range.Else(); |
| 998 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 999 | HValue* result = UnmappedCase(elements, key, value); |
| 1000 | environment()->Push(is_load ? result : value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1001 | } |
| 1002 | in_range.End(); |
| 1003 | |
| 1004 | return environment()->Pop(); |
| 1005 | } |
| 1006 | |
| 1007 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1008 | template <> |
| 1009 | HValue* CodeStubGraphBuilder<KeyedLoadSloppyArgumentsStub>::BuildCodeStub() { |
| 1010 | HValue* receiver = GetParameter(LoadDescriptor::kReceiverIndex); |
| 1011 | HValue* key = GetParameter(LoadDescriptor::kNameIndex); |
| 1012 | |
| 1013 | return EmitKeyedSloppyArguments(receiver, key, NULL); |
| 1014 | } |
| 1015 | |
| 1016 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1017 | Handle<Code> KeyedLoadSloppyArgumentsStub::GenerateCode() { |
| 1018 | return DoGenerateCode(this); |
| 1019 | } |
| 1020 | |
| 1021 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1022 | template <> |
| 1023 | HValue* CodeStubGraphBuilder<KeyedStoreSloppyArgumentsStub>::BuildCodeStub() { |
| 1024 | HValue* receiver = GetParameter(StoreDescriptor::kReceiverIndex); |
| 1025 | HValue* key = GetParameter(StoreDescriptor::kNameIndex); |
| 1026 | HValue* value = GetParameter(StoreDescriptor::kValueIndex); |
| 1027 | |
| 1028 | return EmitKeyedSloppyArguments(receiver, key, value); |
| 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | Handle<Code> KeyedStoreSloppyArgumentsStub::GenerateCode() { |
| 1033 | return DoGenerateCode(this); |
| 1034 | } |
| 1035 | |
| 1036 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1037 | void CodeStubGraphBuilderBase::BuildStoreNamedField( |
| 1038 | HValue* object, HValue* value, FieldIndex index, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1039 | Representation representation, bool transition_to_field) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1040 | DCHECK(!index.is_double() || representation.IsDouble()); |
| 1041 | int offset = index.offset(); |
| 1042 | HObjectAccess access = |
| 1043 | index.is_inobject() |
| 1044 | ? HObjectAccess::ForObservableJSObjectOffset(offset, representation) |
| 1045 | : HObjectAccess::ForBackingStoreOffset(offset, representation); |
| 1046 | |
| 1047 | if (representation.IsDouble()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1048 | if (!FLAG_unbox_double_fields || !index.is_inobject()) { |
| 1049 | HObjectAccess heap_number_access = |
| 1050 | access.WithRepresentation(Representation::Tagged()); |
| 1051 | if (transition_to_field) { |
| 1052 | // The store requires a mutable HeapNumber to be allocated. |
| 1053 | NoObservableSideEffectsScope no_side_effects(this); |
| 1054 | HInstruction* heap_number_size = Add<HConstant>(HeapNumber::kSize); |
| 1055 | |
| 1056 | // TODO(hpayer): Allocation site pretenuring support. |
| 1057 | HInstruction* heap_number = |
| 1058 | Add<HAllocate>(heap_number_size, HType::HeapObject(), NOT_TENURED, |
| 1059 | MUTABLE_HEAP_NUMBER_TYPE); |
| 1060 | AddStoreMapConstant(heap_number, |
| 1061 | isolate()->factory()->mutable_heap_number_map()); |
| 1062 | Add<HStoreNamedField>(heap_number, HObjectAccess::ForHeapNumberValue(), |
| 1063 | value); |
| 1064 | // Store the new mutable heap number into the object. |
| 1065 | access = heap_number_access; |
| 1066 | value = heap_number; |
| 1067 | } else { |
| 1068 | // Load the heap number. |
| 1069 | object = Add<HLoadNamedField>(object, nullptr, heap_number_access); |
| 1070 | // Store the double value into it. |
| 1071 | access = HObjectAccess::ForHeapNumberValue(); |
| 1072 | } |
| 1073 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1074 | } else if (representation.IsHeapObject()) { |
| 1075 | BuildCheckHeapObject(value); |
| 1076 | } |
| 1077 | |
| 1078 | Add<HStoreNamedField>(object, access, value, INITIALIZING_STORE); |
| 1079 | } |
| 1080 | |
| 1081 | |
| 1082 | template <> |
| 1083 | HValue* CodeStubGraphBuilder<StoreFieldStub>::BuildCodeStub() { |
| 1084 | BuildStoreNamedField(GetParameter(0), GetParameter(2), casted_stub()->index(), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1085 | casted_stub()->representation(), false); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1086 | return GetParameter(2); |
| 1087 | } |
| 1088 | |
| 1089 | |
| 1090 | Handle<Code> StoreFieldStub::GenerateCode() { return DoGenerateCode(this); } |
| 1091 | |
| 1092 | |
| 1093 | template <> |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1094 | HValue* CodeStubGraphBuilder<StoreTransitionStub>::BuildCodeStub() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1095 | HValue* object = GetParameter(StoreTransitionHelper::ReceiverIndex()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1096 | |
| 1097 | switch (casted_stub()->store_mode()) { |
| 1098 | case StoreTransitionStub::ExtendStorageAndStoreMapAndValue: { |
| 1099 | HValue* properties = Add<HLoadNamedField>( |
| 1100 | object, nullptr, HObjectAccess::ForPropertiesPointer()); |
| 1101 | HValue* length = AddLoadFixedArrayLength(properties); |
| 1102 | HValue* delta = |
| 1103 | Add<HConstant>(static_cast<int32_t>(JSObject::kFieldsAdded)); |
| 1104 | HValue* new_capacity = AddUncasted<HAdd>(length, delta); |
| 1105 | |
| 1106 | // Grow properties array. |
| 1107 | ElementsKind kind = FAST_ELEMENTS; |
| 1108 | Add<HBoundsCheck>(new_capacity, |
| 1109 | Add<HConstant>((Page::kMaxRegularHeapObjectSize - |
| 1110 | FixedArray::kHeaderSize) >> |
| 1111 | ElementsKindToShiftSize(kind))); |
| 1112 | |
| 1113 | // Reuse this code for properties backing store allocation. |
| 1114 | HValue* new_properties = |
| 1115 | BuildAllocateAndInitializeArray(kind, new_capacity); |
| 1116 | |
| 1117 | BuildCopyProperties(properties, new_properties, length, new_capacity); |
| 1118 | |
| 1119 | Add<HStoreNamedField>(object, HObjectAccess::ForPropertiesPointer(), |
| 1120 | new_properties); |
| 1121 | } |
| 1122 | // Fall through. |
| 1123 | case StoreTransitionStub::StoreMapAndValue: |
| 1124 | // Store the new value into the "extended" object. |
| 1125 | BuildStoreNamedField( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1126 | object, GetParameter(StoreTransitionHelper::ValueIndex()), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1127 | casted_stub()->index(), casted_stub()->representation(), true); |
| 1128 | // Fall through. |
| 1129 | |
| 1130 | case StoreTransitionStub::StoreMapOnly: |
| 1131 | // And finally update the map. |
| 1132 | Add<HStoreNamedField>(object, HObjectAccess::ForMap(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1133 | GetParameter(StoreTransitionHelper::MapIndex())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1134 | break; |
| 1135 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1136 | return GetParameter(StoreTransitionHelper::ValueIndex()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | |
| 1140 | Handle<Code> StoreTransitionStub::GenerateCode() { |
| 1141 | return DoGenerateCode(this); |
| 1142 | } |
| 1143 | |
| 1144 | |
| 1145 | template <> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1146 | HValue* CodeStubGraphBuilder<StoreFastElementStub>::BuildCodeStub() { |
| 1147 | BuildUncheckedMonomorphicElementAccess( |
| 1148 | GetParameter(StoreDescriptor::kReceiverIndex), |
| 1149 | GetParameter(StoreDescriptor::kNameIndex), |
| 1150 | GetParameter(StoreDescriptor::kValueIndex), casted_stub()->is_js_array(), |
| 1151 | casted_stub()->elements_kind(), STORE, NEVER_RETURN_HOLE, |
| 1152 | casted_stub()->store_mode()); |
| 1153 | |
| 1154 | return GetParameter(2); |
| 1155 | } |
| 1156 | |
| 1157 | |
| 1158 | Handle<Code> StoreFastElementStub::GenerateCode() { |
| 1159 | return DoGenerateCode(this); |
| 1160 | } |
| 1161 | |
| 1162 | |
| 1163 | template <> |
| 1164 | HValue* CodeStubGraphBuilder<TransitionElementsKindStub>::BuildCodeStub() { |
| 1165 | info()->MarkAsSavesCallerDoubles(); |
| 1166 | |
| 1167 | BuildTransitionElementsKind(GetParameter(0), |
| 1168 | GetParameter(1), |
| 1169 | casted_stub()->from_kind(), |
| 1170 | casted_stub()->to_kind(), |
| 1171 | casted_stub()->is_js_array()); |
| 1172 | |
| 1173 | return GetParameter(0); |
| 1174 | } |
| 1175 | |
| 1176 | |
| 1177 | Handle<Code> TransitionElementsKindStub::GenerateCode() { |
| 1178 | return DoGenerateCode(this); |
| 1179 | } |
| 1180 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1181 | |
| 1182 | template <> |
| 1183 | HValue* CodeStubGraphBuilder<AllocateHeapNumberStub>::BuildCodeStub() { |
| 1184 | HValue* result = |
| 1185 | Add<HAllocate>(Add<HConstant>(HeapNumber::kSize), HType::HeapNumber(), |
| 1186 | NOT_TENURED, HEAP_NUMBER_TYPE); |
| 1187 | AddStoreMapConstant(result, isolate()->factory()->heap_number_map()); |
| 1188 | return result; |
| 1189 | } |
| 1190 | |
| 1191 | |
| 1192 | Handle<Code> AllocateHeapNumberStub::GenerateCode() { |
| 1193 | return DoGenerateCode(this); |
| 1194 | } |
| 1195 | |
| 1196 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1197 | template <> |
| 1198 | HValue* CodeStubGraphBuilder<AllocateMutableHeapNumberStub>::BuildCodeStub() { |
| 1199 | HValue* result = |
| 1200 | Add<HAllocate>(Add<HConstant>(HeapNumber::kSize), HType::HeapObject(), |
| 1201 | NOT_TENURED, MUTABLE_HEAP_NUMBER_TYPE); |
| 1202 | AddStoreMapConstant(result, isolate()->factory()->mutable_heap_number_map()); |
| 1203 | return result; |
| 1204 | } |
| 1205 | |
| 1206 | |
| 1207 | Handle<Code> AllocateMutableHeapNumberStub::GenerateCode() { |
| 1208 | return DoGenerateCode(this); |
| 1209 | } |
| 1210 | |
| 1211 | |
| 1212 | template <> |
| 1213 | HValue* CodeStubGraphBuilder<AllocateInNewSpaceStub>::BuildCodeStub() { |
| 1214 | HValue* result = Add<HAllocate>(GetParameter(0), HType::Tagged(), NOT_TENURED, |
| 1215 | JS_OBJECT_TYPE); |
| 1216 | return result; |
| 1217 | } |
| 1218 | |
| 1219 | |
| 1220 | Handle<Code> AllocateInNewSpaceStub::GenerateCode() { |
| 1221 | return DoGenerateCode(this); |
| 1222 | } |
| 1223 | |
| 1224 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1225 | HValue* CodeStubGraphBuilderBase::BuildArrayConstructor( |
| 1226 | ElementsKind kind, |
| 1227 | AllocationSiteOverrideMode override_mode, |
| 1228 | ArgumentClass argument_class) { |
| 1229 | HValue* constructor = GetParameter(ArrayConstructorStubBase::kConstructor); |
| 1230 | HValue* alloc_site = GetParameter(ArrayConstructorStubBase::kAllocationSite); |
| 1231 | JSArrayBuilder array_builder(this, kind, alloc_site, constructor, |
| 1232 | override_mode); |
| 1233 | HValue* result = NULL; |
| 1234 | switch (argument_class) { |
| 1235 | case NONE: |
| 1236 | // This stub is very performance sensitive, the generated code must be |
| 1237 | // tuned so that it doesn't build and eager frame. |
| 1238 | info()->MarkMustNotHaveEagerFrame(); |
| 1239 | result = array_builder.AllocateEmptyArray(); |
| 1240 | break; |
| 1241 | case SINGLE: |
| 1242 | result = BuildArraySingleArgumentConstructor(&array_builder); |
| 1243 | break; |
| 1244 | case MULTIPLE: |
| 1245 | result = BuildArrayNArgumentsConstructor(&array_builder, kind); |
| 1246 | break; |
| 1247 | } |
| 1248 | |
| 1249 | return result; |
| 1250 | } |
| 1251 | |
| 1252 | |
| 1253 | HValue* CodeStubGraphBuilderBase::BuildInternalArrayConstructor( |
| 1254 | ElementsKind kind, ArgumentClass argument_class) { |
| 1255 | HValue* constructor = GetParameter( |
| 1256 | InternalArrayConstructorStubBase::kConstructor); |
| 1257 | JSArrayBuilder array_builder(this, kind, constructor); |
| 1258 | |
| 1259 | HValue* result = NULL; |
| 1260 | switch (argument_class) { |
| 1261 | case NONE: |
| 1262 | // This stub is very performance sensitive, the generated code must be |
| 1263 | // tuned so that it doesn't build and eager frame. |
| 1264 | info()->MarkMustNotHaveEagerFrame(); |
| 1265 | result = array_builder.AllocateEmptyArray(); |
| 1266 | break; |
| 1267 | case SINGLE: |
| 1268 | result = BuildArraySingleArgumentConstructor(&array_builder); |
| 1269 | break; |
| 1270 | case MULTIPLE: |
| 1271 | result = BuildArrayNArgumentsConstructor(&array_builder, kind); |
| 1272 | break; |
| 1273 | } |
| 1274 | return result; |
| 1275 | } |
| 1276 | |
| 1277 | |
| 1278 | HValue* CodeStubGraphBuilderBase::BuildArraySingleArgumentConstructor( |
| 1279 | JSArrayBuilder* array_builder) { |
| 1280 | // Smi check and range check on the input arg. |
| 1281 | HValue* constant_one = graph()->GetConstant1(); |
| 1282 | HValue* constant_zero = graph()->GetConstant0(); |
| 1283 | |
| 1284 | HInstruction* elements = Add<HArgumentsElements>(false); |
| 1285 | HInstruction* argument = Add<HAccessArgumentsAt>( |
| 1286 | elements, constant_one, constant_zero); |
| 1287 | |
| 1288 | return BuildAllocateArrayFromLength(array_builder, argument); |
| 1289 | } |
| 1290 | |
| 1291 | |
| 1292 | HValue* CodeStubGraphBuilderBase::BuildArrayNArgumentsConstructor( |
| 1293 | JSArrayBuilder* array_builder, ElementsKind kind) { |
| 1294 | // Insert a bounds check because the number of arguments might exceed |
| 1295 | // the kInitialMaxFastElementArray limit. This cannot happen for code |
| 1296 | // that was parsed, but calling via Array.apply(thisArg, [...]) might |
| 1297 | // trigger it. |
| 1298 | HValue* length = GetArgumentsLength(); |
| 1299 | HConstant* max_alloc_length = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1300 | Add<HConstant>(JSArray::kInitialMaxFastElementArray); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1301 | HValue* checked_length = Add<HBoundsCheck>(length, max_alloc_length); |
| 1302 | |
| 1303 | // We need to fill with the hole if it's a smi array in the multi-argument |
| 1304 | // case because we might have to bail out while copying arguments into |
| 1305 | // the array because they aren't compatible with a smi array. |
| 1306 | // If it's a double array, no problem, and if it's fast then no |
| 1307 | // problem either because doubles are boxed. |
| 1308 | // |
| 1309 | // TODO(mvstanton): consider an instruction to memset fill the array |
| 1310 | // with zero in this case instead. |
| 1311 | JSArrayBuilder::FillMode fill_mode = IsFastSmiElementsKind(kind) |
| 1312 | ? JSArrayBuilder::FILL_WITH_HOLE |
| 1313 | : JSArrayBuilder::DONT_FILL_WITH_HOLE; |
| 1314 | HValue* new_object = array_builder->AllocateArray(checked_length, |
| 1315 | max_alloc_length, |
| 1316 | checked_length, |
| 1317 | fill_mode); |
| 1318 | HValue* elements = array_builder->GetElementsLocation(); |
| 1319 | DCHECK(elements != NULL); |
| 1320 | |
| 1321 | // Now populate the elements correctly. |
| 1322 | LoopBuilder builder(this, |
| 1323 | context(), |
| 1324 | LoopBuilder::kPostIncrement); |
| 1325 | HValue* start = graph()->GetConstant0(); |
| 1326 | HValue* key = builder.BeginBody(start, checked_length, Token::LT); |
| 1327 | HInstruction* argument_elements = Add<HArgumentsElements>(false); |
| 1328 | HInstruction* argument = Add<HAccessArgumentsAt>( |
| 1329 | argument_elements, checked_length, key); |
| 1330 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1331 | Add<HStoreKeyed>(elements, key, argument, nullptr, kind); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1332 | builder.EndBody(); |
| 1333 | return new_object; |
| 1334 | } |
| 1335 | |
| 1336 | |
| 1337 | template <> |
| 1338 | HValue* CodeStubGraphBuilder<ArrayNoArgumentConstructorStub>::BuildCodeStub() { |
| 1339 | ElementsKind kind = casted_stub()->elements_kind(); |
| 1340 | AllocationSiteOverrideMode override_mode = casted_stub()->override_mode(); |
| 1341 | return BuildArrayConstructor(kind, override_mode, NONE); |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | Handle<Code> ArrayNoArgumentConstructorStub::GenerateCode() { |
| 1346 | return DoGenerateCode(this); |
| 1347 | } |
| 1348 | |
| 1349 | |
| 1350 | template <> |
| 1351 | HValue* CodeStubGraphBuilder<ArraySingleArgumentConstructorStub>:: |
| 1352 | BuildCodeStub() { |
| 1353 | ElementsKind kind = casted_stub()->elements_kind(); |
| 1354 | AllocationSiteOverrideMode override_mode = casted_stub()->override_mode(); |
| 1355 | return BuildArrayConstructor(kind, override_mode, SINGLE); |
| 1356 | } |
| 1357 | |
| 1358 | |
| 1359 | Handle<Code> ArraySingleArgumentConstructorStub::GenerateCode() { |
| 1360 | return DoGenerateCode(this); |
| 1361 | } |
| 1362 | |
| 1363 | |
| 1364 | template <> |
| 1365 | HValue* CodeStubGraphBuilder<ArrayNArgumentsConstructorStub>::BuildCodeStub() { |
| 1366 | ElementsKind kind = casted_stub()->elements_kind(); |
| 1367 | AllocationSiteOverrideMode override_mode = casted_stub()->override_mode(); |
| 1368 | return BuildArrayConstructor(kind, override_mode, MULTIPLE); |
| 1369 | } |
| 1370 | |
| 1371 | |
| 1372 | Handle<Code> ArrayNArgumentsConstructorStub::GenerateCode() { |
| 1373 | return DoGenerateCode(this); |
| 1374 | } |
| 1375 | |
| 1376 | |
| 1377 | template <> |
| 1378 | HValue* CodeStubGraphBuilder<InternalArrayNoArgumentConstructorStub>:: |
| 1379 | BuildCodeStub() { |
| 1380 | ElementsKind kind = casted_stub()->elements_kind(); |
| 1381 | return BuildInternalArrayConstructor(kind, NONE); |
| 1382 | } |
| 1383 | |
| 1384 | |
| 1385 | Handle<Code> InternalArrayNoArgumentConstructorStub::GenerateCode() { |
| 1386 | return DoGenerateCode(this); |
| 1387 | } |
| 1388 | |
| 1389 | |
| 1390 | template <> |
| 1391 | HValue* CodeStubGraphBuilder<InternalArraySingleArgumentConstructorStub>:: |
| 1392 | BuildCodeStub() { |
| 1393 | ElementsKind kind = casted_stub()->elements_kind(); |
| 1394 | return BuildInternalArrayConstructor(kind, SINGLE); |
| 1395 | } |
| 1396 | |
| 1397 | |
| 1398 | Handle<Code> InternalArraySingleArgumentConstructorStub::GenerateCode() { |
| 1399 | return DoGenerateCode(this); |
| 1400 | } |
| 1401 | |
| 1402 | |
| 1403 | template <> |
| 1404 | HValue* CodeStubGraphBuilder<InternalArrayNArgumentsConstructorStub>:: |
| 1405 | BuildCodeStub() { |
| 1406 | ElementsKind kind = casted_stub()->elements_kind(); |
| 1407 | return BuildInternalArrayConstructor(kind, MULTIPLE); |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | Handle<Code> InternalArrayNArgumentsConstructorStub::GenerateCode() { |
| 1412 | return DoGenerateCode(this); |
| 1413 | } |
| 1414 | |
| 1415 | |
| 1416 | template <> |
| 1417 | HValue* CodeStubGraphBuilder<CompareNilICStub>::BuildCodeInitializedStub() { |
| 1418 | Isolate* isolate = graph()->isolate(); |
| 1419 | CompareNilICStub* stub = casted_stub(); |
| 1420 | HIfContinuation continuation; |
| 1421 | Handle<Map> sentinel_map(isolate->heap()->meta_map()); |
| 1422 | Type* type = stub->GetType(zone(), sentinel_map); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1423 | BuildCompareNil(GetParameter(0), type, &continuation, kEmbedMapsViaWeakCells); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1424 | IfBuilder if_nil(this, &continuation); |
| 1425 | if_nil.Then(); |
| 1426 | if (continuation.IsFalseReachable()) { |
| 1427 | if_nil.Else(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1428 | if_nil.Return(graph()->GetConstantFalse()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1429 | } |
| 1430 | if_nil.End(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1431 | return continuation.IsTrueReachable() ? graph()->GetConstantTrue() |
| 1432 | : graph()->GetConstantUndefined(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1433 | } |
| 1434 | |
| 1435 | |
| 1436 | Handle<Code> CompareNilICStub::GenerateCode() { |
| 1437 | return DoGenerateCode(this); |
| 1438 | } |
| 1439 | |
| 1440 | |
| 1441 | template <> |
| 1442 | HValue* CodeStubGraphBuilder<BinaryOpICStub>::BuildCodeInitializedStub() { |
| 1443 | BinaryOpICState state = casted_stub()->state(); |
| 1444 | |
| 1445 | HValue* left = GetParameter(BinaryOpICStub::kLeft); |
| 1446 | HValue* right = GetParameter(BinaryOpICStub::kRight); |
| 1447 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1448 | Type* left_type = state.GetLeftType(); |
| 1449 | Type* right_type = state.GetRightType(); |
| 1450 | Type* result_type = state.GetResultType(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1451 | |
| 1452 | DCHECK(!left_type->Is(Type::None()) && !right_type->Is(Type::None()) && |
| 1453 | (state.HasSideEffects() || !result_type->Is(Type::None()))); |
| 1454 | |
| 1455 | HValue* result = NULL; |
| 1456 | HAllocationMode allocation_mode(NOT_TENURED); |
| 1457 | if (state.op() == Token::ADD && |
| 1458 | (left_type->Maybe(Type::String()) || right_type->Maybe(Type::String())) && |
| 1459 | !left_type->Is(Type::String()) && !right_type->Is(Type::String())) { |
| 1460 | // For the generic add stub a fast case for string addition is performance |
| 1461 | // critical. |
| 1462 | if (left_type->Maybe(Type::String())) { |
| 1463 | IfBuilder if_leftisstring(this); |
| 1464 | if_leftisstring.If<HIsStringAndBranch>(left); |
| 1465 | if_leftisstring.Then(); |
| 1466 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1467 | Push(BuildBinaryOperation(state.op(), left, right, Type::String(zone()), |
| 1468 | right_type, result_type, |
| 1469 | state.fixed_right_arg(), allocation_mode, |
| 1470 | state.strength())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1471 | } |
| 1472 | if_leftisstring.Else(); |
| 1473 | { |
| 1474 | Push(BuildBinaryOperation( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1475 | state.op(), left, right, left_type, right_type, result_type, |
| 1476 | state.fixed_right_arg(), allocation_mode, state.strength())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1477 | } |
| 1478 | if_leftisstring.End(); |
| 1479 | result = Pop(); |
| 1480 | } else { |
| 1481 | IfBuilder if_rightisstring(this); |
| 1482 | if_rightisstring.If<HIsStringAndBranch>(right); |
| 1483 | if_rightisstring.Then(); |
| 1484 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1485 | Push(BuildBinaryOperation(state.op(), left, right, left_type, |
| 1486 | Type::String(zone()), result_type, |
| 1487 | state.fixed_right_arg(), allocation_mode, |
| 1488 | state.strength())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1489 | } |
| 1490 | if_rightisstring.Else(); |
| 1491 | { |
| 1492 | Push(BuildBinaryOperation( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1493 | state.op(), left, right, left_type, right_type, result_type, |
| 1494 | state.fixed_right_arg(), allocation_mode, state.strength())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1495 | } |
| 1496 | if_rightisstring.End(); |
| 1497 | result = Pop(); |
| 1498 | } |
| 1499 | } else { |
| 1500 | result = BuildBinaryOperation( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1501 | state.op(), left, right, left_type, right_type, result_type, |
| 1502 | state.fixed_right_arg(), allocation_mode, state.strength()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
| 1505 | // If we encounter a generic argument, the number conversion is |
| 1506 | // observable, thus we cannot afford to bail out after the fact. |
| 1507 | if (!state.HasSideEffects()) { |
| 1508 | result = EnforceNumberType(result, result_type); |
| 1509 | } |
| 1510 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1511 | return result; |
| 1512 | } |
| 1513 | |
| 1514 | |
| 1515 | Handle<Code> BinaryOpICStub::GenerateCode() { |
| 1516 | return DoGenerateCode(this); |
| 1517 | } |
| 1518 | |
| 1519 | |
| 1520 | template <> |
| 1521 | HValue* CodeStubGraphBuilder<BinaryOpWithAllocationSiteStub>::BuildCodeStub() { |
| 1522 | BinaryOpICState state = casted_stub()->state(); |
| 1523 | |
| 1524 | HValue* allocation_site = GetParameter( |
| 1525 | BinaryOpWithAllocationSiteStub::kAllocationSite); |
| 1526 | HValue* left = GetParameter(BinaryOpWithAllocationSiteStub::kLeft); |
| 1527 | HValue* right = GetParameter(BinaryOpWithAllocationSiteStub::kRight); |
| 1528 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1529 | Type* left_type = state.GetLeftType(); |
| 1530 | Type* right_type = state.GetRightType(); |
| 1531 | Type* result_type = state.GetResultType(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1532 | HAllocationMode allocation_mode(allocation_site); |
| 1533 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1534 | return BuildBinaryOperation(state.op(), left, right, left_type, right_type, |
| 1535 | result_type, state.fixed_right_arg(), |
| 1536 | allocation_mode, state.strength()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1537 | } |
| 1538 | |
| 1539 | |
| 1540 | Handle<Code> BinaryOpWithAllocationSiteStub::GenerateCode() { |
| 1541 | return DoGenerateCode(this); |
| 1542 | } |
| 1543 | |
| 1544 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1545 | HValue* CodeStubGraphBuilderBase::BuildToString(HValue* input, bool convert) { |
| 1546 | if (!convert) return BuildCheckString(input); |
| 1547 | IfBuilder if_inputissmi(this); |
| 1548 | HValue* inputissmi = if_inputissmi.If<HIsSmiAndBranch>(input); |
| 1549 | if_inputissmi.Then(); |
| 1550 | { |
| 1551 | // Convert the input smi to a string. |
| 1552 | Push(BuildNumberToString(input, Type::SignedSmall())); |
| 1553 | } |
| 1554 | if_inputissmi.Else(); |
| 1555 | { |
| 1556 | HValue* input_map = |
| 1557 | Add<HLoadNamedField>(input, inputissmi, HObjectAccess::ForMap()); |
| 1558 | HValue* input_instance_type = Add<HLoadNamedField>( |
| 1559 | input_map, inputissmi, HObjectAccess::ForMapInstanceType()); |
| 1560 | IfBuilder if_inputisstring(this); |
| 1561 | if_inputisstring.If<HCompareNumericAndBranch>( |
| 1562 | input_instance_type, Add<HConstant>(FIRST_NONSTRING_TYPE), Token::LT); |
| 1563 | if_inputisstring.Then(); |
| 1564 | { |
| 1565 | // The input is already a string. |
| 1566 | Push(input); |
| 1567 | } |
| 1568 | if_inputisstring.Else(); |
| 1569 | { |
| 1570 | // Convert to primitive first (if necessary), see |
| 1571 | // ES6 section 12.7.3 The Addition operator. |
| 1572 | IfBuilder if_inputisprimitive(this); |
| 1573 | STATIC_ASSERT(FIRST_PRIMITIVE_TYPE == FIRST_TYPE); |
| 1574 | if_inputisprimitive.If<HCompareNumericAndBranch>( |
| 1575 | input_instance_type, Add<HConstant>(LAST_PRIMITIVE_TYPE), Token::LTE); |
| 1576 | if_inputisprimitive.Then(); |
| 1577 | { |
| 1578 | // The input is already a primitive. |
| 1579 | Push(input); |
| 1580 | } |
| 1581 | if_inputisprimitive.Else(); |
| 1582 | { |
| 1583 | // Convert the input to a primitive. |
| 1584 | Push(BuildToPrimitive(input, input_map)); |
| 1585 | } |
| 1586 | if_inputisprimitive.End(); |
| 1587 | // Convert the primitive to a string value. |
| 1588 | ToStringDescriptor descriptor(isolate()); |
| 1589 | ToStringStub stub(isolate()); |
| 1590 | HValue* values[] = {context(), Pop()}; |
| 1591 | Push(AddUncasted<HCallWithDescriptor>( |
| 1592 | Add<HConstant>(stub.GetCode()), 0, descriptor, |
| 1593 | Vector<HValue*>(values, arraysize(values)))); |
| 1594 | } |
| 1595 | if_inputisstring.End(); |
| 1596 | } |
| 1597 | if_inputissmi.End(); |
| 1598 | return Pop(); |
| 1599 | } |
| 1600 | |
| 1601 | |
| 1602 | HValue* CodeStubGraphBuilderBase::BuildToPrimitive(HValue* input, |
| 1603 | HValue* input_map) { |
| 1604 | // Get the native context of the caller. |
| 1605 | HValue* native_context = BuildGetNativeContext(); |
| 1606 | |
| 1607 | // Determine the initial map of the %ObjectPrototype%. |
| 1608 | HValue* object_function_prototype_map = |
| 1609 | Add<HLoadNamedField>(native_context, nullptr, |
| 1610 | HObjectAccess::ForContextSlot( |
| 1611 | Context::OBJECT_FUNCTION_PROTOTYPE_MAP_INDEX)); |
| 1612 | |
| 1613 | // Determine the initial map of the %StringPrototype%. |
| 1614 | HValue* string_function_prototype_map = |
| 1615 | Add<HLoadNamedField>(native_context, nullptr, |
| 1616 | HObjectAccess::ForContextSlot( |
| 1617 | Context::STRING_FUNCTION_PROTOTYPE_MAP_INDEX)); |
| 1618 | |
| 1619 | // Determine the initial map of the String function. |
| 1620 | HValue* string_function = Add<HLoadNamedField>( |
| 1621 | native_context, nullptr, |
| 1622 | HObjectAccess::ForContextSlot(Context::STRING_FUNCTION_INDEX)); |
| 1623 | HValue* string_function_initial_map = Add<HLoadNamedField>( |
| 1624 | string_function, nullptr, HObjectAccess::ForPrototypeOrInitialMap()); |
| 1625 | |
| 1626 | // Determine the map of the [[Prototype]] of {input}. |
| 1627 | HValue* input_prototype = |
| 1628 | Add<HLoadNamedField>(input_map, nullptr, HObjectAccess::ForPrototype()); |
| 1629 | HValue* input_prototype_map = |
| 1630 | Add<HLoadNamedField>(input_prototype, nullptr, HObjectAccess::ForMap()); |
| 1631 | |
| 1632 | // For string wrappers (JSValue instances with [[StringData]] internal |
| 1633 | // fields), we can shortcirciut the ToPrimitive if |
| 1634 | // |
| 1635 | // (a) the {input} map matches the initial map of the String function, |
| 1636 | // (b) the {input} [[Prototype]] is the unmodified %StringPrototype% (i.e. |
| 1637 | // no one monkey-patched toString, @@toPrimitive or valueOf), and |
| 1638 | // (c) the %ObjectPrototype% (i.e. the [[Prototype]] of the |
| 1639 | // %StringPrototype%) is also unmodified, that is no one sneaked a |
| 1640 | // @@toPrimitive into the %ObjectPrototype%. |
| 1641 | // |
| 1642 | // If all these assumptions hold, we can just take the [[StringData]] value |
| 1643 | // and return it. |
| 1644 | // TODO(bmeurer): This just repairs a regression introduced by removing the |
| 1645 | // weird (and broken) intrinsic %_IsStringWrapperSafeForDefaultValue, which |
| 1646 | // was intendend to something similar to this, although less efficient and |
| 1647 | // wrong in the presence of @@toPrimitive. Long-term we might want to move |
| 1648 | // into the direction of having a ToPrimitiveStub that can do common cases |
| 1649 | // while staying in JavaScript land (i.e. not going to C++). |
| 1650 | IfBuilder if_inputisstringwrapper(this); |
| 1651 | if_inputisstringwrapper.If<HCompareObjectEqAndBranch>( |
| 1652 | input_map, string_function_initial_map); |
| 1653 | if_inputisstringwrapper.And(); |
| 1654 | if_inputisstringwrapper.If<HCompareObjectEqAndBranch>( |
| 1655 | input_prototype_map, string_function_prototype_map); |
| 1656 | if_inputisstringwrapper.And(); |
| 1657 | if_inputisstringwrapper.If<HCompareObjectEqAndBranch>( |
| 1658 | Add<HLoadNamedField>(Add<HLoadNamedField>(input_prototype_map, nullptr, |
| 1659 | HObjectAccess::ForPrototype()), |
| 1660 | nullptr, HObjectAccess::ForMap()), |
| 1661 | object_function_prototype_map); |
| 1662 | if_inputisstringwrapper.Then(); |
| 1663 | { |
| 1664 | Push(BuildLoadNamedField( |
| 1665 | input, FieldIndex::ForInObjectOffset(JSValue::kValueOffset))); |
| 1666 | } |
| 1667 | if_inputisstringwrapper.Else(); |
| 1668 | { |
| 1669 | // TODO(bmeurer): Add support for fast ToPrimitive conversion using |
| 1670 | // a dedicated ToPrimitiveStub. |
| 1671 | Add<HPushArguments>(input); |
| 1672 | Push(Add<HCallRuntime>(Runtime::FunctionForId(Runtime::kToPrimitive), 1)); |
| 1673 | } |
| 1674 | if_inputisstringwrapper.End(); |
| 1675 | return Pop(); |
| 1676 | } |
| 1677 | |
| 1678 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1679 | template <> |
| 1680 | HValue* CodeStubGraphBuilder<StringAddStub>::BuildCodeInitializedStub() { |
| 1681 | StringAddStub* stub = casted_stub(); |
| 1682 | StringAddFlags flags = stub->flags(); |
| 1683 | PretenureFlag pretenure_flag = stub->pretenure_flag(); |
| 1684 | |
| 1685 | HValue* left = GetParameter(StringAddStub::kLeft); |
| 1686 | HValue* right = GetParameter(StringAddStub::kRight); |
| 1687 | |
| 1688 | // Make sure that both arguments are strings if not known in advance. |
| 1689 | if ((flags & STRING_ADD_CHECK_LEFT) == STRING_ADD_CHECK_LEFT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1690 | left = |
| 1691 | BuildToString(left, (flags & STRING_ADD_CONVERT) == STRING_ADD_CONVERT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1692 | } |
| 1693 | if ((flags & STRING_ADD_CHECK_RIGHT) == STRING_ADD_CHECK_RIGHT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1694 | right = BuildToString(right, |
| 1695 | (flags & STRING_ADD_CONVERT) == STRING_ADD_CONVERT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1696 | } |
| 1697 | |
| 1698 | return BuildStringAdd(left, right, HAllocationMode(pretenure_flag)); |
| 1699 | } |
| 1700 | |
| 1701 | |
| 1702 | Handle<Code> StringAddStub::GenerateCode() { |
| 1703 | return DoGenerateCode(this); |
| 1704 | } |
| 1705 | |
| 1706 | |
| 1707 | template <> |
| 1708 | HValue* CodeStubGraphBuilder<ToBooleanStub>::BuildCodeInitializedStub() { |
| 1709 | ToBooleanStub* stub = casted_stub(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1710 | IfBuilder if_true(this); |
| 1711 | if_true.If<HBranch>(GetParameter(0), stub->types()); |
| 1712 | if_true.Then(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1713 | if_true.Return(graph()->GetConstantTrue()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1714 | if_true.Else(); |
| 1715 | if_true.End(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1716 | return graph()->GetConstantFalse(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1717 | } |
| 1718 | |
| 1719 | |
| 1720 | Handle<Code> ToBooleanStub::GenerateCode() { |
| 1721 | return DoGenerateCode(this); |
| 1722 | } |
| 1723 | |
| 1724 | |
| 1725 | template <> |
| 1726 | HValue* CodeStubGraphBuilder<StoreGlobalStub>::BuildCodeInitializedStub() { |
| 1727 | StoreGlobalStub* stub = casted_stub(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1728 | HParameter* value = GetParameter(StoreDescriptor::kValueIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1729 | if (stub->check_global()) { |
| 1730 | // Check that the map of the global has not changed: use a placeholder map |
| 1731 | // that will be replaced later with the global object's map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1732 | HParameter* proxy = GetParameter(StoreDescriptor::kReceiverIndex); |
| 1733 | HValue* proxy_map = |
| 1734 | Add<HLoadNamedField>(proxy, nullptr, HObjectAccess::ForMap()); |
| 1735 | HValue* global = |
| 1736 | Add<HLoadNamedField>(proxy_map, nullptr, HObjectAccess::ForPrototype()); |
| 1737 | HValue* map_cell = Add<HConstant>(isolate()->factory()->NewWeakCell( |
| 1738 | StoreGlobalStub::global_map_placeholder(isolate()))); |
| 1739 | HValue* expected_map = Add<HLoadNamedField>( |
| 1740 | map_cell, nullptr, HObjectAccess::ForWeakCellValue()); |
| 1741 | HValue* map = |
| 1742 | Add<HLoadNamedField>(global, nullptr, HObjectAccess::ForMap()); |
| 1743 | IfBuilder map_check(this); |
| 1744 | map_check.IfNot<HCompareObjectEqAndBranch>(expected_map, map); |
| 1745 | map_check.ThenDeopt(Deoptimizer::kUnknownMap); |
| 1746 | map_check.End(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1747 | } |
| 1748 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1749 | HValue* weak_cell = Add<HConstant>(isolate()->factory()->NewWeakCell( |
| 1750 | StoreGlobalStub::property_cell_placeholder(isolate()))); |
| 1751 | HValue* cell = Add<HLoadNamedField>(weak_cell, nullptr, |
| 1752 | HObjectAccess::ForWeakCellValue()); |
| 1753 | Add<HCheckHeapObject>(cell); |
| 1754 | HObjectAccess access = HObjectAccess::ForPropertyCellValue(); |
| 1755 | // Load the payload of the global parameter cell. A hole indicates that the |
| 1756 | // cell has been invalidated and that the store must be handled by the |
| 1757 | // runtime. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1758 | HValue* cell_contents = Add<HLoadNamedField>(cell, nullptr, access); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1759 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1760 | auto cell_type = stub->cell_type(); |
| 1761 | if (cell_type == PropertyCellType::kConstant || |
| 1762 | cell_type == PropertyCellType::kUndefined) { |
| 1763 | // This is always valid for all states a cell can be in. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1764 | IfBuilder builder(this); |
| 1765 | builder.If<HCompareObjectEqAndBranch>(cell_contents, value); |
| 1766 | builder.Then(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1767 | builder.ElseDeopt( |
| 1768 | Deoptimizer::kUnexpectedCellContentsInConstantGlobalStore); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1769 | builder.End(); |
| 1770 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1771 | IfBuilder builder(this); |
| 1772 | HValue* hole_value = graph()->GetConstantHole(); |
| 1773 | builder.If<HCompareObjectEqAndBranch>(cell_contents, hole_value); |
| 1774 | builder.Then(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1775 | builder.Deopt(Deoptimizer::kUnexpectedCellContentsInGlobalStore); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1776 | builder.Else(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1777 | // When dealing with constant types, the type may be allowed to change, as |
| 1778 | // long as optimized code remains valid. |
| 1779 | if (cell_type == PropertyCellType::kConstantType) { |
| 1780 | switch (stub->constant_type()) { |
| 1781 | case PropertyCellConstantType::kSmi: |
| 1782 | access = access.WithRepresentation(Representation::Smi()); |
| 1783 | break; |
| 1784 | case PropertyCellConstantType::kStableMap: { |
| 1785 | // It is sufficient here to check that the value and cell contents |
| 1786 | // have identical maps, no matter if they are stable or not or if they |
| 1787 | // are the maps that were originally in the cell or not. If optimized |
| 1788 | // code will deopt when a cell has a unstable map and if it has a |
| 1789 | // dependency on a stable map, it will deopt if the map destabilizes. |
| 1790 | Add<HCheckHeapObject>(value); |
| 1791 | Add<HCheckHeapObject>(cell_contents); |
| 1792 | HValue* expected_map = Add<HLoadNamedField>(cell_contents, nullptr, |
| 1793 | HObjectAccess::ForMap()); |
| 1794 | HValue* map = |
| 1795 | Add<HLoadNamedField>(value, nullptr, HObjectAccess::ForMap()); |
| 1796 | IfBuilder map_check(this); |
| 1797 | map_check.IfNot<HCompareObjectEqAndBranch>(expected_map, map); |
| 1798 | map_check.ThenDeopt(Deoptimizer::kUnknownMap); |
| 1799 | map_check.End(); |
| 1800 | access = access.WithRepresentation(Representation::HeapObject()); |
| 1801 | break; |
| 1802 | } |
| 1803 | } |
| 1804 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1805 | Add<HStoreNamedField>(cell, access, value); |
| 1806 | builder.End(); |
| 1807 | } |
| 1808 | |
| 1809 | return value; |
| 1810 | } |
| 1811 | |
| 1812 | |
| 1813 | Handle<Code> StoreGlobalStub::GenerateCode() { |
| 1814 | return DoGenerateCode(this); |
| 1815 | } |
| 1816 | |
| 1817 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1818 | template <> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1819 | HValue* CodeStubGraphBuilder<ElementsTransitionAndStoreStub>::BuildCodeStub() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1820 | HValue* object = GetParameter(StoreTransitionHelper::ReceiverIndex()); |
| 1821 | HValue* key = GetParameter(StoreTransitionHelper::NameIndex()); |
| 1822 | HValue* value = GetParameter(StoreTransitionHelper::ValueIndex()); |
| 1823 | HValue* map = GetParameter(StoreTransitionHelper::MapIndex()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1824 | |
| 1825 | if (FLAG_trace_elements_transitions) { |
| 1826 | // Tracing elements transitions is the job of the runtime. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1827 | Add<HDeoptimize>(Deoptimizer::kTracingElementsTransitions, |
| 1828 | Deoptimizer::EAGER); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1829 | } else { |
| 1830 | info()->MarkAsSavesCallerDoubles(); |
| 1831 | |
| 1832 | BuildTransitionElementsKind(object, map, |
| 1833 | casted_stub()->from_kind(), |
| 1834 | casted_stub()->to_kind(), |
| 1835 | casted_stub()->is_jsarray()); |
| 1836 | |
| 1837 | BuildUncheckedMonomorphicElementAccess(object, key, value, |
| 1838 | casted_stub()->is_jsarray(), |
| 1839 | casted_stub()->to_kind(), |
| 1840 | STORE, ALLOW_RETURN_HOLE, |
| 1841 | casted_stub()->store_mode()); |
| 1842 | } |
| 1843 | |
| 1844 | return value; |
| 1845 | } |
| 1846 | |
| 1847 | |
| 1848 | Handle<Code> ElementsTransitionAndStoreStub::GenerateCode() { |
| 1849 | return DoGenerateCode(this); |
| 1850 | } |
| 1851 | |
| 1852 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1853 | template <> |
| 1854 | HValue* CodeStubGraphBuilder<ToObjectStub>::BuildCodeStub() { |
| 1855 | HValue* receiver = GetParameter(ToObjectDescriptor::kReceiverIndex); |
| 1856 | return BuildToObject(receiver); |
| 1857 | } |
| 1858 | |
| 1859 | |
| 1860 | Handle<Code> ToObjectStub::GenerateCode() { return DoGenerateCode(this); } |
| 1861 | |
| 1862 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1863 | void CodeStubGraphBuilderBase::BuildCheckAndInstallOptimizedCode( |
| 1864 | HValue* js_function, |
| 1865 | HValue* native_context, |
| 1866 | IfBuilder* builder, |
| 1867 | HValue* optimized_map, |
| 1868 | HValue* map_index) { |
| 1869 | HValue* osr_ast_id_none = Add<HConstant>(BailoutId::None().ToInt()); |
| 1870 | HValue* context_slot = LoadFromOptimizedCodeMap( |
| 1871 | optimized_map, map_index, SharedFunctionInfo::kContextOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1872 | context_slot = Add<HLoadNamedField>(context_slot, nullptr, |
| 1873 | HObjectAccess::ForWeakCellValue()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1874 | HValue* osr_ast_slot = LoadFromOptimizedCodeMap( |
| 1875 | optimized_map, map_index, SharedFunctionInfo::kOsrAstIdOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1876 | HValue* code_object = LoadFromOptimizedCodeMap( |
| 1877 | optimized_map, map_index, SharedFunctionInfo::kCachedCodeOffset); |
| 1878 | code_object = Add<HLoadNamedField>(code_object, nullptr, |
| 1879 | HObjectAccess::ForWeakCellValue()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1880 | builder->If<HCompareObjectEqAndBranch>(native_context, |
| 1881 | context_slot); |
| 1882 | builder->AndIf<HCompareObjectEqAndBranch>(osr_ast_slot, osr_ast_id_none); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1883 | builder->And(); |
| 1884 | builder->IfNot<HCompareObjectEqAndBranch>(code_object, |
| 1885 | graph()->GetConstant0()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1886 | builder->Then(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1887 | HValue* literals = LoadFromOptimizedCodeMap(optimized_map, |
| 1888 | map_index, SharedFunctionInfo::kLiteralsOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1889 | literals = Add<HLoadNamedField>(literals, nullptr, |
| 1890 | HObjectAccess::ForWeakCellValue()); |
| 1891 | IfBuilder maybe_deopt(this); |
| 1892 | maybe_deopt.If<HCompareObjectEqAndBranch>(literals, graph()->GetConstant0()); |
| 1893 | maybe_deopt.ThenDeopt(Deoptimizer::kLiteralsWereDisposed); |
| 1894 | maybe_deopt.End(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1895 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1896 | BuildInstallOptimizedCode(js_function, native_context, code_object, literals); |
| 1897 | |
| 1898 | // The builder continues in the "then" after this function. |
| 1899 | } |
| 1900 | |
| 1901 | |
| 1902 | void CodeStubGraphBuilderBase::BuildInstallOptimizedCode(HValue* js_function, |
| 1903 | HValue* native_context, |
| 1904 | HValue* code_object, |
| 1905 | HValue* literals) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1906 | Counters* counters = isolate()->counters(); |
| 1907 | AddIncrementCounter(counters->fast_new_closure_install_optimized()); |
| 1908 | |
| 1909 | // TODO(fschneider): Idea: store proper code pointers in the optimized code |
| 1910 | // map and either unmangle them on marking or do nothing as the whole map is |
| 1911 | // discarded on major GC anyway. |
| 1912 | Add<HStoreCodeEntry>(js_function, code_object); |
| 1913 | Add<HStoreNamedField>(js_function, HObjectAccess::ForLiteralsPointer(), |
| 1914 | literals); |
| 1915 | |
| 1916 | // Now link a function into a list of optimized functions. |
| 1917 | HValue* optimized_functions_list = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1918 | native_context, nullptr, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1919 | HObjectAccess::ForContextSlot(Context::OPTIMIZED_FUNCTIONS_LIST)); |
| 1920 | Add<HStoreNamedField>(js_function, |
| 1921 | HObjectAccess::ForNextFunctionLinkPointer(), |
| 1922 | optimized_functions_list); |
| 1923 | |
| 1924 | // This store is the only one that should have a write barrier. |
| 1925 | Add<HStoreNamedField>(native_context, |
| 1926 | HObjectAccess::ForContextSlot(Context::OPTIMIZED_FUNCTIONS_LIST), |
| 1927 | js_function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1928 | } |
| 1929 | |
| 1930 | |
| 1931 | void CodeStubGraphBuilderBase::BuildInstallCode(HValue* js_function, |
| 1932 | HValue* shared_info) { |
| 1933 | Add<HStoreNamedField>(js_function, |
| 1934 | HObjectAccess::ForNextFunctionLinkPointer(), |
| 1935 | graph()->GetConstantUndefined()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1936 | HValue* code_object = Add<HLoadNamedField>(shared_info, nullptr, |
| 1937 | HObjectAccess::ForCodeOffset()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1938 | Add<HStoreCodeEntry>(js_function, code_object); |
| 1939 | } |
| 1940 | |
| 1941 | |
| 1942 | HInstruction* CodeStubGraphBuilderBase::LoadFromOptimizedCodeMap( |
| 1943 | HValue* optimized_map, |
| 1944 | HValue* iterator, |
| 1945 | int field_offset) { |
| 1946 | // By making sure to express these loads in the form [<hvalue> + constant] |
| 1947 | // the keyed load can be hoisted. |
| 1948 | DCHECK(field_offset >= 0 && field_offset < SharedFunctionInfo::kEntryLength); |
| 1949 | HValue* field_slot = iterator; |
| 1950 | if (field_offset > 0) { |
| 1951 | HValue* field_offset_value = Add<HConstant>(field_offset); |
| 1952 | field_slot = AddUncasted<HAdd>(iterator, field_offset_value); |
| 1953 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1954 | HInstruction* field_entry = Add<HLoadKeyed>(optimized_map, field_slot, |
| 1955 | nullptr, nullptr, FAST_ELEMENTS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1956 | return field_entry; |
| 1957 | } |
| 1958 | |
| 1959 | |
| 1960 | void CodeStubGraphBuilderBase::BuildInstallFromOptimizedCodeMap( |
| 1961 | HValue* js_function, |
| 1962 | HValue* shared_info, |
| 1963 | HValue* native_context) { |
| 1964 | Counters* counters = isolate()->counters(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1965 | Factory* factory = isolate()->factory(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1966 | IfBuilder is_optimized(this); |
| 1967 | HInstruction* optimized_map = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1968 | shared_info, nullptr, HObjectAccess::ForOptimizedCodeMap()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1969 | HValue* null_constant = Add<HConstant>(0); |
| 1970 | is_optimized.If<HCompareObjectEqAndBranch>(optimized_map, null_constant); |
| 1971 | is_optimized.Then(); |
| 1972 | { |
| 1973 | BuildInstallCode(js_function, shared_info); |
| 1974 | } |
| 1975 | is_optimized.Else(); |
| 1976 | { |
| 1977 | AddIncrementCounter(counters->fast_new_closure_try_optimized()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1978 | // The {optimized_map} points to fixed array of 4-element entries: |
| 1979 | // (native context, optimized code, literals, ast-id). |
| 1980 | // Iterate through the {optimized_map} backwards. After the loop, if no |
| 1981 | // matching optimized code was found, install unoptimized code. |
| 1982 | // for(i = map.length() - SharedFunctionInfo::kEntryLength; |
| 1983 | // i >= SharedFunctionInfo::kEntriesStart; |
| 1984 | // i -= SharedFunctionInfo::kEntryLength) { ... } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1985 | HValue* first_entry_index = |
| 1986 | Add<HConstant>(SharedFunctionInfo::kEntriesStart); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1987 | HValue* shared_function_entry_length = |
| 1988 | Add<HConstant>(SharedFunctionInfo::kEntryLength); |
| 1989 | LoopBuilder loop_builder(this, context(), LoopBuilder::kPostDecrement, |
| 1990 | shared_function_entry_length); |
| 1991 | HValue* array_length = Add<HLoadNamedField>( |
| 1992 | optimized_map, nullptr, HObjectAccess::ForFixedArrayLength()); |
| 1993 | HValue* start_pos = |
| 1994 | AddUncasted<HSub>(array_length, shared_function_entry_length); |
| 1995 | HValue* slot_iterator = |
| 1996 | loop_builder.BeginBody(start_pos, first_entry_index, Token::GTE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1997 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1998 | IfBuilder done_check(this); |
| 1999 | BuildCheckAndInstallOptimizedCode(js_function, native_context, |
| 2000 | &done_check, optimized_map, |
| 2001 | slot_iterator); |
| 2002 | // Fall out of the loop |
| 2003 | loop_builder.Break(); |
| 2004 | } |
| 2005 | loop_builder.EndBody(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2006 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2007 | // If {slot_iterator} is less than the first entry index, then we failed to |
| 2008 | // find a context-dependent code and try context-independent code next. |
| 2009 | IfBuilder no_optimized_code_check(this); |
| 2010 | no_optimized_code_check.If<HCompareNumericAndBranch>( |
| 2011 | slot_iterator, first_entry_index, Token::LT); |
| 2012 | no_optimized_code_check.Then(); |
| 2013 | { |
| 2014 | IfBuilder shared_code_check(this); |
| 2015 | HValue* shared_code = |
| 2016 | Add<HLoadNamedField>(optimized_map, nullptr, |
| 2017 | HObjectAccess::ForOptimizedCodeMapSharedCode()); |
| 2018 | shared_code = Add<HLoadNamedField>(shared_code, nullptr, |
| 2019 | HObjectAccess::ForWeakCellValue()); |
| 2020 | shared_code_check.IfNot<HCompareObjectEqAndBranch>( |
| 2021 | shared_code, graph()->GetConstant0()); |
| 2022 | shared_code_check.Then(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2023 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2024 | // Store the context-independent optimized code. |
| 2025 | HValue* literals = Add<HConstant>(factory->empty_fixed_array()); |
| 2026 | BuildInstallOptimizedCode(js_function, native_context, shared_code, |
| 2027 | literals); |
| 2028 | } |
| 2029 | shared_code_check.Else(); |
| 2030 | { |
| 2031 | // Store the unoptimized code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2032 | BuildInstallCode(js_function, shared_info); |
| 2033 | } |
| 2034 | } |
| 2035 | } |
| 2036 | } |
| 2037 | |
| 2038 | |
| 2039 | template<> |
| 2040 | HValue* CodeStubGraphBuilder<FastNewClosureStub>::BuildCodeStub() { |
| 2041 | Counters* counters = isolate()->counters(); |
| 2042 | Factory* factory = isolate()->factory(); |
| 2043 | HInstruction* empty_fixed_array = |
| 2044 | Add<HConstant>(factory->empty_fixed_array()); |
| 2045 | HValue* shared_info = GetParameter(0); |
| 2046 | |
| 2047 | AddIncrementCounter(counters->fast_new_closure_total()); |
| 2048 | |
| 2049 | // Create a new closure from the given function info in new space |
| 2050 | HValue* size = Add<HConstant>(JSFunction::kSize); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2051 | HInstruction* js_function = |
| 2052 | Add<HAllocate>(size, HType::JSObject(), NOT_TENURED, JS_FUNCTION_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2053 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2054 | int map_index = Context::FunctionMapIndex(casted_stub()->language_mode(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2055 | casted_stub()->kind()); |
| 2056 | |
| 2057 | // Compute the function map in the current native context and set that |
| 2058 | // as the map of the allocated object. |
| 2059 | HInstruction* native_context = BuildGetNativeContext(); |
| 2060 | HInstruction* map_slot_value = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2061 | native_context, nullptr, HObjectAccess::ForContextSlot(map_index)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2062 | Add<HStoreNamedField>(js_function, HObjectAccess::ForMap(), map_slot_value); |
| 2063 | |
| 2064 | // Initialize the rest of the function. |
| 2065 | Add<HStoreNamedField>(js_function, HObjectAccess::ForPropertiesPointer(), |
| 2066 | empty_fixed_array); |
| 2067 | Add<HStoreNamedField>(js_function, HObjectAccess::ForElementsPointer(), |
| 2068 | empty_fixed_array); |
| 2069 | Add<HStoreNamedField>(js_function, HObjectAccess::ForLiteralsPointer(), |
| 2070 | empty_fixed_array); |
| 2071 | Add<HStoreNamedField>(js_function, HObjectAccess::ForPrototypeOrInitialMap(), |
| 2072 | graph()->GetConstantHole()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2073 | Add<HStoreNamedField>( |
| 2074 | js_function, HObjectAccess::ForSharedFunctionInfoPointer(), shared_info); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2075 | Add<HStoreNamedField>(js_function, HObjectAccess::ForFunctionContextPointer(), |
| 2076 | context()); |
| 2077 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2078 | // Initialize the code pointer in the function to be the one found in the |
| 2079 | // shared function info object. But first check if there is an optimized |
| 2080 | // version for our context. |
| 2081 | BuildInstallFromOptimizedCodeMap(js_function, shared_info, native_context); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2082 | |
| 2083 | return js_function; |
| 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | Handle<Code> FastNewClosureStub::GenerateCode() { |
| 2088 | return DoGenerateCode(this); |
| 2089 | } |
| 2090 | |
| 2091 | |
| 2092 | template<> |
| 2093 | HValue* CodeStubGraphBuilder<FastNewContextStub>::BuildCodeStub() { |
| 2094 | int length = casted_stub()->slots() + Context::MIN_CONTEXT_SLOTS; |
| 2095 | |
| 2096 | // Get the function. |
| 2097 | HParameter* function = GetParameter(FastNewContextStub::kFunction); |
| 2098 | |
| 2099 | // Allocate the context in new space. |
| 2100 | HAllocate* function_context = Add<HAllocate>( |
| 2101 | Add<HConstant>(length * kPointerSize + FixedArray::kHeaderSize), |
| 2102 | HType::HeapObject(), NOT_TENURED, FIXED_ARRAY_TYPE); |
| 2103 | |
| 2104 | // Set up the object header. |
| 2105 | AddStoreMapConstant(function_context, |
| 2106 | isolate()->factory()->function_context_map()); |
| 2107 | Add<HStoreNamedField>(function_context, |
| 2108 | HObjectAccess::ForFixedArrayLength(), |
| 2109 | Add<HConstant>(length)); |
| 2110 | |
| 2111 | // Set up the fixed slots. |
| 2112 | Add<HStoreNamedField>(function_context, |
| 2113 | HObjectAccess::ForContextSlot(Context::CLOSURE_INDEX), |
| 2114 | function); |
| 2115 | Add<HStoreNamedField>(function_context, |
| 2116 | HObjectAccess::ForContextSlot(Context::PREVIOUS_INDEX), |
| 2117 | context()); |
| 2118 | Add<HStoreNamedField>(function_context, |
| 2119 | HObjectAccess::ForContextSlot(Context::EXTENSION_INDEX), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2120 | graph()->GetConstantHole()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2121 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2122 | // Copy the native context from the previous context. |
| 2123 | HValue* native_context = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2124 | context(), nullptr, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2125 | HObjectAccess::ForContextSlot(Context::NATIVE_CONTEXT_INDEX)); |
| 2126 | Add<HStoreNamedField>(function_context, HObjectAccess::ForContextSlot( |
| 2127 | Context::NATIVE_CONTEXT_INDEX), |
| 2128 | native_context); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2129 | |
| 2130 | // Initialize the rest of the slots to undefined. |
| 2131 | for (int i = Context::MIN_CONTEXT_SLOTS; i < length; ++i) { |
| 2132 | Add<HStoreNamedField>(function_context, |
| 2133 | HObjectAccess::ForContextSlot(i), |
| 2134 | graph()->GetConstantUndefined()); |
| 2135 | } |
| 2136 | |
| 2137 | return function_context; |
| 2138 | } |
| 2139 | |
| 2140 | |
| 2141 | Handle<Code> FastNewContextStub::GenerateCode() { |
| 2142 | return DoGenerateCode(this); |
| 2143 | } |
| 2144 | |
| 2145 | |
| 2146 | template <> |
| 2147 | HValue* CodeStubGraphBuilder<LoadDictionaryElementStub>::BuildCodeStub() { |
| 2148 | HValue* receiver = GetParameter(LoadDescriptor::kReceiverIndex); |
| 2149 | HValue* key = GetParameter(LoadDescriptor::kNameIndex); |
| 2150 | |
| 2151 | Add<HCheckSmi>(key); |
| 2152 | |
| 2153 | HValue* elements = AddLoadElements(receiver); |
| 2154 | |
| 2155 | HValue* hash = BuildElementIndexHash(key); |
| 2156 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2157 | return BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash, |
| 2158 | casted_stub()->language_mode()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2159 | } |
| 2160 | |
| 2161 | |
| 2162 | Handle<Code> LoadDictionaryElementStub::GenerateCode() { |
| 2163 | return DoGenerateCode(this); |
| 2164 | } |
| 2165 | |
| 2166 | |
| 2167 | template<> |
| 2168 | HValue* CodeStubGraphBuilder<RegExpConstructResultStub>::BuildCodeStub() { |
| 2169 | // Determine the parameters. |
| 2170 | HValue* length = GetParameter(RegExpConstructResultStub::kLength); |
| 2171 | HValue* index = GetParameter(RegExpConstructResultStub::kIndex); |
| 2172 | HValue* input = GetParameter(RegExpConstructResultStub::kInput); |
| 2173 | |
| 2174 | info()->MarkMustNotHaveEagerFrame(); |
| 2175 | |
| 2176 | return BuildRegExpConstructResult(length, index, input); |
| 2177 | } |
| 2178 | |
| 2179 | |
| 2180 | Handle<Code> RegExpConstructResultStub::GenerateCode() { |
| 2181 | return DoGenerateCode(this); |
| 2182 | } |
| 2183 | |
| 2184 | |
| 2185 | template <> |
| 2186 | class CodeStubGraphBuilder<KeyedLoadGenericStub> |
| 2187 | : public CodeStubGraphBuilderBase { |
| 2188 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2189 | explicit CodeStubGraphBuilder(CompilationInfo* info) |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2190 | : CodeStubGraphBuilderBase(info) {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2191 | |
| 2192 | protected: |
| 2193 | virtual HValue* BuildCodeStub(); |
| 2194 | |
| 2195 | void BuildElementsKindLimitCheck(HGraphBuilder::IfBuilder* if_builder, |
| 2196 | HValue* bit_field2, |
| 2197 | ElementsKind kind); |
| 2198 | |
| 2199 | void BuildFastElementLoad(HGraphBuilder::IfBuilder* if_builder, |
| 2200 | HValue* receiver, |
| 2201 | HValue* key, |
| 2202 | HValue* instance_type, |
| 2203 | HValue* bit_field2, |
| 2204 | ElementsKind kind); |
| 2205 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2206 | KeyedLoadGenericStub* casted_stub() { |
| 2207 | return static_cast<KeyedLoadGenericStub*>(stub()); |
| 2208 | } |
| 2209 | }; |
| 2210 | |
| 2211 | |
| 2212 | void CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildElementsKindLimitCheck( |
| 2213 | HGraphBuilder::IfBuilder* if_builder, HValue* bit_field2, |
| 2214 | ElementsKind kind) { |
| 2215 | ElementsKind next_kind = static_cast<ElementsKind>(kind + 1); |
| 2216 | HValue* kind_limit = Add<HConstant>( |
| 2217 | static_cast<int>(Map::ElementsKindBits::encode(next_kind))); |
| 2218 | |
| 2219 | if_builder->If<HCompareNumericAndBranch>(bit_field2, kind_limit, Token::LT); |
| 2220 | if_builder->Then(); |
| 2221 | } |
| 2222 | |
| 2223 | |
| 2224 | void CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildFastElementLoad( |
| 2225 | HGraphBuilder::IfBuilder* if_builder, HValue* receiver, HValue* key, |
| 2226 | HValue* instance_type, HValue* bit_field2, ElementsKind kind) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2227 | BuildElementsKindLimitCheck(if_builder, bit_field2, kind); |
| 2228 | |
| 2229 | IfBuilder js_array_check(this); |
| 2230 | js_array_check.If<HCompareNumericAndBranch>( |
| 2231 | instance_type, Add<HConstant>(JS_ARRAY_TYPE), Token::EQ); |
| 2232 | js_array_check.Then(); |
| 2233 | Push(BuildUncheckedMonomorphicElementAccess(receiver, key, NULL, |
| 2234 | true, kind, |
| 2235 | LOAD, NEVER_RETURN_HOLE, |
| 2236 | STANDARD_STORE)); |
| 2237 | js_array_check.Else(); |
| 2238 | Push(BuildUncheckedMonomorphicElementAccess(receiver, key, NULL, |
| 2239 | false, kind, |
| 2240 | LOAD, NEVER_RETURN_HOLE, |
| 2241 | STANDARD_STORE)); |
| 2242 | js_array_check.End(); |
| 2243 | } |
| 2244 | |
| 2245 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2246 | HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() { |
| 2247 | HValue* receiver = GetParameter(LoadDescriptor::kReceiverIndex); |
| 2248 | HValue* key = GetParameter(LoadDescriptor::kNameIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2249 | // Split into a smi/integer case and unique string case. |
| 2250 | HIfContinuation index_name_split_continuation(graph()->CreateBasicBlock(), |
| 2251 | graph()->CreateBasicBlock()); |
| 2252 | |
| 2253 | BuildKeyedIndexCheck(key, &index_name_split_continuation); |
| 2254 | |
| 2255 | IfBuilder index_name_split(this, &index_name_split_continuation); |
| 2256 | index_name_split.Then(); |
| 2257 | { |
| 2258 | // Key is an index (number) |
| 2259 | key = Pop(); |
| 2260 | |
| 2261 | int bit_field_mask = (1 << Map::kIsAccessCheckNeeded) | |
| 2262 | (1 << Map::kHasIndexedInterceptor); |
| 2263 | BuildJSObjectCheck(receiver, bit_field_mask); |
| 2264 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2265 | HValue* map = |
| 2266 | Add<HLoadNamedField>(receiver, nullptr, HObjectAccess::ForMap()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2267 | |
| 2268 | HValue* instance_type = |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2269 | Add<HLoadNamedField>(map, nullptr, HObjectAccess::ForMapInstanceType()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2270 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2271 | HValue* bit_field2 = |
| 2272 | Add<HLoadNamedField>(map, nullptr, HObjectAccess::ForMapBitField2()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2273 | |
| 2274 | IfBuilder kind_if(this); |
| 2275 | BuildFastElementLoad(&kind_if, receiver, key, instance_type, bit_field2, |
| 2276 | FAST_HOLEY_ELEMENTS); |
| 2277 | |
| 2278 | kind_if.Else(); |
| 2279 | { |
| 2280 | BuildFastElementLoad(&kind_if, receiver, key, instance_type, bit_field2, |
| 2281 | FAST_HOLEY_DOUBLE_ELEMENTS); |
| 2282 | } |
| 2283 | kind_if.Else(); |
| 2284 | |
| 2285 | // The DICTIONARY_ELEMENTS check generates a "kind_if.Then" |
| 2286 | BuildElementsKindLimitCheck(&kind_if, bit_field2, DICTIONARY_ELEMENTS); |
| 2287 | { |
| 2288 | HValue* elements = AddLoadElements(receiver); |
| 2289 | |
| 2290 | HValue* hash = BuildElementIndexHash(key); |
| 2291 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2292 | Push(BuildUncheckedDictionaryElementLoad(receiver, elements, key, hash, |
| 2293 | casted_stub()->language_mode())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2294 | } |
| 2295 | kind_if.Else(); |
| 2296 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2297 | // The SLOW_SLOPPY_ARGUMENTS_ELEMENTS check generates a "kind_if.Then" |
| 2298 | STATIC_ASSERT(FAST_SLOPPY_ARGUMENTS_ELEMENTS < |
| 2299 | SLOW_SLOPPY_ARGUMENTS_ELEMENTS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2300 | BuildElementsKindLimitCheck(&kind_if, bit_field2, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2301 | SLOW_SLOPPY_ARGUMENTS_ELEMENTS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2302 | // Non-strict elements are not handled. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2303 | Add<HDeoptimize>(Deoptimizer::kNonStrictElementsInKeyedLoadGenericStub, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2304 | Deoptimizer::EAGER); |
| 2305 | Push(graph()->GetConstant0()); |
| 2306 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2307 | kind_if.ElseDeopt( |
| 2308 | Deoptimizer::kElementsKindUnhandledInKeyedLoadGenericStub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2309 | |
| 2310 | kind_if.End(); |
| 2311 | } |
| 2312 | index_name_split.Else(); |
| 2313 | { |
| 2314 | // Key is a unique string. |
| 2315 | key = Pop(); |
| 2316 | |
| 2317 | int bit_field_mask = (1 << Map::kIsAccessCheckNeeded) | |
| 2318 | (1 << Map::kHasNamedInterceptor); |
| 2319 | BuildJSObjectCheck(receiver, bit_field_mask); |
| 2320 | |
| 2321 | HIfContinuation continuation; |
| 2322 | BuildTestForDictionaryProperties(receiver, &continuation); |
| 2323 | IfBuilder if_dict_properties(this, &continuation); |
| 2324 | if_dict_properties.Then(); |
| 2325 | { |
| 2326 | // Key is string, properties are dictionary mode |
| 2327 | BuildNonGlobalObjectCheck(receiver); |
| 2328 | |
| 2329 | HValue* properties = Add<HLoadNamedField>( |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2330 | receiver, nullptr, HObjectAccess::ForPropertiesPointer()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2331 | |
| 2332 | HValue* hash = |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2333 | Add<HLoadNamedField>(key, nullptr, HObjectAccess::ForNameHashField()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2334 | |
| 2335 | hash = AddUncasted<HShr>(hash, Add<HConstant>(Name::kHashShift)); |
| 2336 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2337 | HValue* value = BuildUncheckedDictionaryElementLoad( |
| 2338 | receiver, properties, key, hash, casted_stub()->language_mode()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2339 | Push(value); |
| 2340 | } |
| 2341 | if_dict_properties.Else(); |
| 2342 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2343 | // TODO(dcarney): don't use keyed lookup cache, but convert to use |
| 2344 | // megamorphic stub cache. |
| 2345 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2346 | // Key is string, properties are fast mode |
| 2347 | HValue* hash = BuildKeyedLookupCacheHash(receiver, key); |
| 2348 | |
| 2349 | ExternalReference cache_keys_ref = |
| 2350 | ExternalReference::keyed_lookup_cache_keys(isolate()); |
| 2351 | HValue* cache_keys = Add<HConstant>(cache_keys_ref); |
| 2352 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2353 | HValue* map = |
| 2354 | Add<HLoadNamedField>(receiver, nullptr, HObjectAccess::ForMap()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2355 | HValue* base_index = AddUncasted<HMul>(hash, Add<HConstant>(2)); |
| 2356 | base_index->ClearFlag(HValue::kCanOverflow); |
| 2357 | |
| 2358 | HIfContinuation inline_or_runtime_continuation( |
| 2359 | graph()->CreateBasicBlock(), graph()->CreateBasicBlock()); |
| 2360 | { |
| 2361 | IfBuilder lookup_ifs[KeyedLookupCache::kEntriesPerBucket]; |
| 2362 | for (int probe = 0; probe < KeyedLookupCache::kEntriesPerBucket; |
| 2363 | ++probe) { |
| 2364 | IfBuilder* lookup_if = &lookup_ifs[probe]; |
| 2365 | lookup_if->Initialize(this); |
| 2366 | int probe_base = probe * KeyedLookupCache::kEntryLength; |
| 2367 | HValue* map_index = AddUncasted<HAdd>( |
| 2368 | base_index, |
| 2369 | Add<HConstant>(probe_base + KeyedLookupCache::kMapIndex)); |
| 2370 | map_index->ClearFlag(HValue::kCanOverflow); |
| 2371 | HValue* key_index = AddUncasted<HAdd>( |
| 2372 | base_index, |
| 2373 | Add<HConstant>(probe_base + KeyedLookupCache::kKeyIndex)); |
| 2374 | key_index->ClearFlag(HValue::kCanOverflow); |
| 2375 | HValue* map_to_check = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2376 | Add<HLoadKeyed>(cache_keys, map_index, nullptr, nullptr, |
| 2377 | FAST_ELEMENTS, NEVER_RETURN_HOLE, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2378 | lookup_if->If<HCompareObjectEqAndBranch>(map_to_check, map); |
| 2379 | lookup_if->And(); |
| 2380 | HValue* key_to_check = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2381 | Add<HLoadKeyed>(cache_keys, key_index, nullptr, nullptr, |
| 2382 | FAST_ELEMENTS, NEVER_RETURN_HOLE, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2383 | lookup_if->If<HCompareObjectEqAndBranch>(key_to_check, key); |
| 2384 | lookup_if->Then(); |
| 2385 | { |
| 2386 | ExternalReference cache_field_offsets_ref = |
| 2387 | ExternalReference::keyed_lookup_cache_field_offsets(isolate()); |
| 2388 | HValue* cache_field_offsets = |
| 2389 | Add<HConstant>(cache_field_offsets_ref); |
| 2390 | HValue* index = AddUncasted<HAdd>(hash, Add<HConstant>(probe)); |
| 2391 | index->ClearFlag(HValue::kCanOverflow); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2392 | HValue* property_index = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2393 | Add<HLoadKeyed>(cache_field_offsets, index, nullptr, cache_keys, |
| 2394 | INT32_ELEMENTS, NEVER_RETURN_HOLE, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2395 | Push(property_index); |
| 2396 | } |
| 2397 | lookup_if->Else(); |
| 2398 | } |
| 2399 | for (int i = 0; i < KeyedLookupCache::kEntriesPerBucket; ++i) { |
| 2400 | lookup_ifs[i].JoinContinuation(&inline_or_runtime_continuation); |
| 2401 | } |
| 2402 | } |
| 2403 | |
| 2404 | IfBuilder inline_or_runtime(this, &inline_or_runtime_continuation); |
| 2405 | inline_or_runtime.Then(); |
| 2406 | { |
| 2407 | // Found a cached index, load property inline. |
| 2408 | Push(Add<HLoadFieldByIndex>(receiver, Pop())); |
| 2409 | } |
| 2410 | inline_or_runtime.Else(); |
| 2411 | { |
| 2412 | // KeyedLookupCache miss; call runtime. |
| 2413 | Add<HPushArguments>(receiver, key); |
| 2414 | Push(Add<HCallRuntime>( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2415 | Runtime::FunctionForId(is_strong(casted_stub()->language_mode()) |
| 2416 | ? Runtime::kKeyedGetPropertyStrong |
| 2417 | : Runtime::kKeyedGetProperty), |
| 2418 | 2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2419 | } |
| 2420 | inline_or_runtime.End(); |
| 2421 | } |
| 2422 | if_dict_properties.End(); |
| 2423 | } |
| 2424 | index_name_split.End(); |
| 2425 | |
| 2426 | return Pop(); |
| 2427 | } |
| 2428 | |
| 2429 | |
| 2430 | Handle<Code> KeyedLoadGenericStub::GenerateCode() { |
| 2431 | return DoGenerateCode(this); |
| 2432 | } |
| 2433 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2434 | } // namespace internal |
| 2435 | } // namespace v8 |