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Issue 1189153002: Revert of [strong] Implement strong mode restrictions on property access (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 6 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #include "src/cpu-profiler.h" 7 #include "src/cpu-profiler.h"
8 #include "src/ic/call-optimization.h" 8 #include "src/ic/call-optimization.h"
9 #include "src/ic/handler-compiler.h" 9 #include "src/ic/handler-compiler.h"
10 #include "src/ic/ic.h" 10 #include "src/ic/ic.h"
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530 receiver(), scratch2(), true, value(), holder, 530 receiver(), scratch2(), true, value(), holder,
531 accessor_index); 531 accessor_index);
532 return GetCode(kind(), Code::FAST, name); 532 return GetCode(kind(), Code::FAST, name);
533 } 533 }
534 534
535 535
536 #undef __ 536 #undef __
537 537
538 538
539 void ElementHandlerCompiler::CompileElementHandlers( 539 void ElementHandlerCompiler::CompileElementHandlers(
540 MapHandleList* receiver_maps, CodeHandleList* handlers, 540 MapHandleList* receiver_maps, CodeHandleList* handlers) {
541 LanguageMode language_mode) {
542 for (int i = 0; i < receiver_maps->length(); ++i) { 541 for (int i = 0; i < receiver_maps->length(); ++i) {
543 Handle<Map> receiver_map = receiver_maps->at(i); 542 Handle<Map> receiver_map = receiver_maps->at(i);
544 Handle<Code> cached_stub; 543 Handle<Code> cached_stub;
545 544
546 if (receiver_map->IsStringMap()) { 545 if (receiver_map->IsStringMap()) {
547 cached_stub = LoadIndexedStringStub(isolate()).GetCode(); 546 cached_stub = LoadIndexedStringStub(isolate()).GetCode();
548 } else if (receiver_map->instance_type() < FIRST_JS_RECEIVER_TYPE) { 547 } else if (receiver_map->instance_type() < FIRST_JS_RECEIVER_TYPE) {
549 cached_stub = isolate()->builtins()->KeyedLoadIC_Slow(); 548 cached_stub = isolate()->builtins()->KeyedLoadIC_Slow();
550 } else { 549 } else {
551 bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; 550 bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE;
552 ElementsKind elements_kind = receiver_map->elements_kind(); 551 ElementsKind elements_kind = receiver_map->elements_kind();
553 552
554 // No need to check for an elements-free prototype chain here, the 553 // No need to check for an elements-free prototype chain here, the
555 // generated stub code needs to check that dynamically anyway. 554 // generated stub code needs to check that dynamically anyway.
556 bool convert_hole_to_undefined = 555 bool convert_hole_to_undefined =
557 (is_js_array && elements_kind == FAST_HOLEY_ELEMENTS && 556 is_js_array && elements_kind == FAST_HOLEY_ELEMENTS &&
558 *receiver_map == 557 *receiver_map == isolate()->get_initial_js_array_map(elements_kind);
559 isolate()->get_initial_js_array_map(elements_kind)) &&
560 !is_strong(language_mode);
561 558
562 if (receiver_map->has_indexed_interceptor()) { 559 if (receiver_map->has_indexed_interceptor()) {
563 cached_stub = LoadIndexedInterceptorStub(isolate()).GetCode(); 560 cached_stub = LoadIndexedInterceptorStub(isolate()).GetCode();
564 } else if (IsSloppyArgumentsElements(elements_kind)) { 561 } else if (IsSloppyArgumentsElements(elements_kind)) {
565 cached_stub = KeyedLoadSloppyArgumentsStub(isolate()).GetCode(); 562 cached_stub = KeyedLoadSloppyArgumentsStub(isolate()).GetCode();
566 } else if (IsFastElementsKind(elements_kind) || 563 } else if (IsFastElementsKind(elements_kind) ||
567 IsExternalArrayElementsKind(elements_kind) || 564 IsExternalArrayElementsKind(elements_kind) ||
568 IsFixedTypedArrayElementsKind(elements_kind)) { 565 IsFixedTypedArrayElementsKind(elements_kind)) {
569 cached_stub = LoadFastElementStub(isolate(), is_js_array, elements_kind, 566 cached_stub = LoadFastElementStub(isolate(), is_js_array, elements_kind,
570 convert_hole_to_undefined).GetCode(); 567 convert_hole_to_undefined).GetCode();
571 } else { 568 } else {
572 DCHECK(elements_kind == DICTIONARY_ELEMENTS); 569 DCHECK(elements_kind == DICTIONARY_ELEMENTS);
573 LoadICState state = LoadICState( 570 cached_stub = LoadDictionaryElementStub(isolate()).GetCode();
574 is_strong(language_mode) ? LoadICState::kStrongModeState : 0);
575 cached_stub = LoadDictionaryElementStub(isolate(), state).GetCode();
576 } 571 }
577 } 572 }
578 573
579 handlers->Add(cached_stub); 574 handlers->Add(cached_stub);
580 } 575 }
581 } 576 }
582 } // namespace internal 577 } // namespace internal
583 } // namespace v8 578 } // namespace v8
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