| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/ic/ic-compiler.h" |
| |
| #include "src/ic/handler-compiler.h" |
| #include "src/ic/ic-inl.h" |
| #include "src/profiler/cpu-profiler.h" |
| |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| Handle<Code> PropertyICCompiler::ComputeKeyedLoadMonomorphicHandler( |
| Handle<Map> receiver_map, ExtraICState extra_ic_state) { |
| Isolate* isolate = receiver_map->GetIsolate(); |
| bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; |
| ElementsKind elements_kind = receiver_map->elements_kind(); |
| |
| // No need to check for an elements-free prototype chain here, the generated |
| // stub code needs to check that dynamically anyway. |
| bool convert_hole_to_undefined = |
| is_js_array && elements_kind == FAST_HOLEY_ELEMENTS && |
| *receiver_map == isolate->get_initial_js_array_map(elements_kind); |
| Handle<Code> stub; |
| if (receiver_map->has_indexed_interceptor()) { |
| TRACE_HANDLER_STATS(isolate, KeyedLoadIC_LoadIndexedInterceptorStub); |
| stub = LoadIndexedInterceptorStub(isolate).GetCode(); |
| } else if (receiver_map->IsStringMap()) { |
| TRACE_HANDLER_STATS(isolate, KeyedLoadIC_LoadIndexedStringStub); |
| stub = LoadIndexedStringStub(isolate).GetCode(); |
| } else if (receiver_map->has_sloppy_arguments_elements()) { |
| TRACE_HANDLER_STATS(isolate, KeyedLoadIC_KeyedLoadSloppyArgumentsStub); |
| stub = KeyedLoadSloppyArgumentsStub(isolate).GetCode(); |
| } else if (receiver_map->has_fast_elements() || |
| receiver_map->has_fixed_typed_array_elements()) { |
| TRACE_HANDLER_STATS(isolate, KeyedLoadIC_LoadFastElementStub); |
| stub = LoadFastElementStub(isolate, is_js_array, elements_kind, |
| convert_hole_to_undefined).GetCode(); |
| } else { |
| DCHECK(receiver_map->has_dictionary_elements()); |
| TRACE_HANDLER_STATS(isolate, KeyedLoadIC_LoadDictionaryElementStub); |
| stub = LoadDictionaryElementStub(isolate, LoadICState(extra_ic_state)) |
| .GetCode(); |
| } |
| return stub; |
| } |
| |
| Handle<Code> PropertyICCompiler::ComputeKeyedStoreMonomorphicHandler( |
| Handle<Map> receiver_map, KeyedAccessStoreMode store_mode) { |
| Isolate* isolate = receiver_map->GetIsolate(); |
| |
| DCHECK(store_mode == STANDARD_STORE || |
| store_mode == STORE_AND_GROW_NO_TRANSITION || |
| store_mode == STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS || |
| store_mode == STORE_NO_TRANSITION_HANDLE_COW); |
| |
| PropertyICCompiler compiler(isolate); |
| Handle<Code> code = |
| compiler.CompileKeyedStoreMonomorphicHandler(receiver_map, store_mode); |
| return code; |
| } |
| |
| void PropertyICCompiler::ComputeKeyedStorePolymorphicHandlers( |
| MapHandleList* receiver_maps, MapHandleList* transitioned_maps, |
| CodeHandleList* handlers, KeyedAccessStoreMode store_mode) { |
| Isolate* isolate = receiver_maps->at(0)->GetIsolate(); |
| DCHECK(store_mode == STANDARD_STORE || |
| store_mode == STORE_AND_GROW_NO_TRANSITION || |
| store_mode == STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS || |
| store_mode == STORE_NO_TRANSITION_HANDLE_COW); |
| PropertyICCompiler compiler(isolate); |
| compiler.CompileKeyedStorePolymorphicHandlers( |
| receiver_maps, transitioned_maps, handlers, store_mode); |
| } |
| |
| |
| void PropertyICCompiler::CompileKeyedStorePolymorphicHandlers( |
| MapHandleList* receiver_maps, MapHandleList* transitioned_maps, |
| CodeHandleList* handlers, KeyedAccessStoreMode store_mode) { |
| for (int i = 0; i < receiver_maps->length(); ++i) { |
| Handle<Map> receiver_map(receiver_maps->at(i)); |
| Handle<Code> cached_stub; |
| Handle<Map> transitioned_map; |
| { |
| Map* tmap = receiver_map->FindElementsKindTransitionedMap(receiver_maps); |
| if (tmap != nullptr) transitioned_map = handle(tmap); |
| } |
| |
| // TODO(mvstanton): The code below is doing pessimistic elements |
| // transitions. I would like to stop doing that and rely on Allocation Site |
| // Tracking to do a better job of ensuring the data types are what they need |
| // to be. Not all the elements are in place yet, pessimistic elements |
| // transitions are still important for performance. |
| bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; |
| ElementsKind elements_kind = receiver_map->elements_kind(); |
| if (!transitioned_map.is_null()) { |
| cached_stub = |
| ElementsTransitionAndStoreStub(isolate(), elements_kind, |
| transitioned_map->elements_kind(), |
| is_js_array, store_mode).GetCode(); |
| } else if (receiver_map->instance_type() < FIRST_JS_RECEIVER_TYPE) { |
| // TODO(mvstanton): Consider embedding store_mode in the state of the slow |
| // keyed store ic for uniformity. |
| cached_stub = isolate()->builtins()->KeyedStoreIC_Slow(); |
| } else { |
| if (IsSloppyArgumentsElements(elements_kind)) { |
| cached_stub = |
| KeyedStoreSloppyArgumentsStub(isolate(), store_mode).GetCode(); |
| } else if (receiver_map->has_fast_elements() || |
| receiver_map->has_fixed_typed_array_elements()) { |
| cached_stub = StoreFastElementStub(isolate(), is_js_array, |
| elements_kind, store_mode).GetCode(); |
| } else { |
| cached_stub = |
| StoreElementStub(isolate(), elements_kind, store_mode).GetCode(); |
| } |
| } |
| DCHECK(!cached_stub.is_null()); |
| handlers->Add(cached_stub); |
| transitioned_maps->Add(transitioned_map); |
| } |
| } |
| |
| |
| #define __ ACCESS_MASM(masm()) |
| |
| |
| Handle<Code> PropertyICCompiler::CompileKeyedStoreMonomorphicHandler( |
| Handle<Map> receiver_map, KeyedAccessStoreMode store_mode) { |
| ElementsKind elements_kind = receiver_map->elements_kind(); |
| bool is_jsarray = receiver_map->instance_type() == JS_ARRAY_TYPE; |
| Handle<Code> stub; |
| if (receiver_map->has_sloppy_arguments_elements()) { |
| TRACE_HANDLER_STATS(isolate(), KeyedStoreIC_KeyedStoreSloppyArgumentsStub); |
| stub = KeyedStoreSloppyArgumentsStub(isolate(), store_mode).GetCode(); |
| } else if (receiver_map->has_fast_elements() || |
| receiver_map->has_fixed_typed_array_elements()) { |
| TRACE_HANDLER_STATS(isolate(), KeyedStoreIC_StoreFastElementStub); |
| stub = StoreFastElementStub(isolate(), is_jsarray, elements_kind, |
| store_mode).GetCode(); |
| } else { |
| TRACE_HANDLER_STATS(isolate(), KeyedStoreIC_StoreElementStub); |
| stub = StoreElementStub(isolate(), elements_kind, store_mode).GetCode(); |
| } |
| return stub; |
| } |
| |
| |
| #undef __ |
| } // namespace internal |
| } // namespace v8 |