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Issue 207963002: Revert "JSObject::NormalizeElements() handlified." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 9 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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4704 Isolate* isolate = array->GetIsolate(); 4704 Isolate* isolate = array->GetIsolate();
4705 CALL_HEAP_FUNCTION(isolate, 4705 CALL_HEAP_FUNCTION(isolate,
4706 CopyFastElementsToDictionary( 4706 CopyFastElementsToDictionary(
4707 isolate, *array, length, *dict), 4707 isolate, *array, length, *dict),
4708 SeededNumberDictionary); 4708 SeededNumberDictionary);
4709 } 4709 }
4710 4710
4711 4711
4712 Handle<SeededNumberDictionary> JSObject::NormalizeElements( 4712 Handle<SeededNumberDictionary> JSObject::NormalizeElements(
4713 Handle<JSObject> object) { 4713 Handle<JSObject> object) {
4714 ASSERT(!object->HasExternalArrayElements()); 4714 CALL_HEAP_FUNCTION(object->GetIsolate(),
4715 Isolate* isolate = object->GetIsolate(); 4715 object->NormalizeElements(),
4716 Factory* factory = isolate->factory(); 4716 SeededNumberDictionary);
4717 }
4718
4719
4720 MaybeObject* JSObject::NormalizeElements() {
4721 ASSERT(!HasExternalArrayElements());
4717 4722
4718 // Find the backing store. 4723 // Find the backing store.
4719 Handle<FixedArrayBase> array(FixedArrayBase::cast(object->elements())); 4724 FixedArrayBase* array = FixedArrayBase::cast(elements());
4725 Map* old_map = array->map();
4720 bool is_arguments = 4726 bool is_arguments =
4721 (array->map() == isolate->heap()->sloppy_arguments_elements_map()); 4727 (old_map == old_map->GetHeap()->sloppy_arguments_elements_map());
4722 if (is_arguments) { 4728 if (is_arguments) {
4723 array = handle(FixedArrayBase::cast( 4729 array = FixedArrayBase::cast(FixedArray::cast(array)->get(1));
4724 Handle<FixedArray>::cast(array)->get(1)));
4725 } 4730 }
4726 if (array->IsDictionary()) return Handle<SeededNumberDictionary>::cast(array); 4731 if (array->IsDictionary()) return array;
4727 4732
4728 ASSERT(object->HasFastSmiOrObjectElements() || 4733 ASSERT(HasFastSmiOrObjectElements() ||
4729 object->HasFastDoubleElements() || 4734 HasFastDoubleElements() ||
4730 object->HasFastArgumentsElements()); 4735 HasFastArgumentsElements());
4731 // Compute the effective length and allocate a new backing store. 4736 // Compute the effective length and allocate a new backing store.
4732 int length = object->IsJSArray() 4737 int length = IsJSArray()
4733 ? Smi::cast(Handle<JSArray>::cast(object)->length())->value() 4738 ? Smi::cast(JSArray::cast(this)->length())->value()
4734 : array->length(); 4739 : array->length();
4735 int old_capacity = 0; 4740 int old_capacity = 0;
4736 int used_elements = 0; 4741 int used_elements = 0;
4737 object->GetElementsCapacityAndUsage(&old_capacity, &used_elements); 4742 GetElementsCapacityAndUsage(&old_capacity, &used_elements);
4738 Handle<SeededNumberDictionary> dictionary = 4743 SeededNumberDictionary* dictionary;
4739 factory->NewSeededNumberDictionary(used_elements); 4744 MaybeObject* maybe_dictionary =
4745 SeededNumberDictionary::Allocate(GetHeap(), used_elements);
4746 if (!maybe_dictionary->To(&dictionary)) return maybe_dictionary;
4740 4747
4741 dictionary = CopyFastElementsToDictionary(array, length, dictionary); 4748 maybe_dictionary = CopyFastElementsToDictionary(
4749 GetIsolate(), array, length, dictionary);
4750 if (!maybe_dictionary->To(&dictionary)) return maybe_dictionary;
4742 4751
4743 // Switch to using the dictionary as the backing storage for elements. 4752 // Switch to using the dictionary as the backing storage for elements.
4744 if (is_arguments) { 4753 if (is_arguments) {
4745 FixedArray::cast(object->elements())->set(1, *dictionary); 4754 FixedArray::cast(elements())->set(1, dictionary);
4746 } else { 4755 } else {
4747 // Set the new map first to satify the elements type assert in 4756 // Set the new map first to satify the elements type assert in
4748 // set_elements(). 4757 // set_elements().
4749 Handle<Map> new_map = 4758 Map* new_map;
4750 JSObject::GetElementsTransitionMap(object, DICTIONARY_ELEMENTS); 4759 MaybeObject* maybe = GetElementsTransitionMap(GetIsolate(),
4751 4760 DICTIONARY_ELEMENTS);
4752 JSObject::MigrateToMap(object, new_map); 4761 if (!maybe->To(&new_map)) return maybe;
4753 object->set_elements(*dictionary); 4762 // TODO(verwaest): Replace by MigrateToMap.
4763 set_map(new_map);
4764 set_elements(dictionary);
4754 } 4765 }
4755 4766
4756 isolate->counters()->elements_to_dictionary()->Increment(); 4767 old_map->GetHeap()->isolate()->counters()->elements_to_dictionary()->
4768 Increment();
4757 4769
4758 #ifdef DEBUG 4770 #ifdef DEBUG
4759 if (FLAG_trace_normalization) { 4771 if (FLAG_trace_normalization) {
4760 PrintF("Object elements have been normalized:\n"); 4772 PrintF("Object elements have been normalized:\n");
4761 object->Print(); 4773 Print();
4762 } 4774 }
4763 #endif 4775 #endif
4764 4776
4765 ASSERT(object->HasDictionaryElements() || 4777 ASSERT(HasDictionaryElements() || HasDictionaryArgumentsElements());
4766 object->HasDictionaryArgumentsElements());
4767 return dictionary; 4778 return dictionary;
4768 } 4779 }
4769 4780
4770 4781
4771 Smi* JSReceiver::GenerateIdentityHash() { 4782 Smi* JSReceiver::GenerateIdentityHash() {
4772 Isolate* isolate = GetIsolate(); 4783 Isolate* isolate = GetIsolate();
4773 4784
4774 int hash_value; 4785 int hash_value;
4775 int attempts = 0; 4786 int attempts = 0;
4776 do { 4787 do {
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16452 #define ERROR_MESSAGES_TEXTS(C, T) T, 16463 #define ERROR_MESSAGES_TEXTS(C, T) T,
16453 static const char* error_messages_[] = { 16464 static const char* error_messages_[] = {
16454 ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS) 16465 ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
16455 }; 16466 };
16456 #undef ERROR_MESSAGES_TEXTS 16467 #undef ERROR_MESSAGES_TEXTS
16457 return error_messages_[reason]; 16468 return error_messages_[reason];
16458 } 16469 }
16459 16470
16460 16471
16461 } } // namespace v8::internal 16472 } } // namespace v8::internal
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