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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 // 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/hydrogen.h" | 5 #include "src/hydrogen.h" |
6 | 6 |
7 #include <sstream> | 7 #include <sstream> |
8 | 8 |
9 #include "src/allocation-site-scopes.h" | 9 #include "src/allocation-site-scopes.h" |
10 #include "src/ast-numbering.h" | 10 #include "src/ast-numbering.h" |
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9901 } | 9901 } |
9902 | 9902 |
9903 // Calculate instance size from initial map of constructor. | 9903 // Calculate instance size from initial map of constructor. |
9904 DCHECK(constructor->has_initial_map()); | 9904 DCHECK(constructor->has_initial_map()); |
9905 Handle<Map> initial_map(constructor->initial_map()); | 9905 Handle<Map> initial_map(constructor->initial_map()); |
9906 int instance_size = initial_map->instance_size(); | 9906 int instance_size = initial_map->instance_size(); |
9907 | 9907 |
9908 // Allocate an instance of the implicit receiver object. | 9908 // Allocate an instance of the implicit receiver object. |
9909 HValue* size_in_bytes = Add<HConstant>(instance_size); | 9909 HValue* size_in_bytes = Add<HConstant>(instance_size); |
9910 HAllocationMode allocation_mode; | 9910 HAllocationMode allocation_mode; |
9911 if (FLAG_pretenuring_call_new) { | |
9912 if (FLAG_allocation_site_pretenuring) { | |
9913 // Try to use pretenuring feedback. | |
9914 Handle<AllocationSite> allocation_site = expr->allocation_site(); | |
9915 allocation_mode = HAllocationMode(allocation_site); | |
9916 // Take a dependency on allocation site. | |
9917 top_info()->dependencies()->AssumeTenuringDecision(allocation_site); | |
9918 } | |
9919 } | |
9920 | |
9921 HAllocate* receiver = BuildAllocate( | 9911 HAllocate* receiver = BuildAllocate( |
9922 size_in_bytes, HType::JSObject(), JS_OBJECT_TYPE, allocation_mode); | 9912 size_in_bytes, HType::JSObject(), JS_OBJECT_TYPE, allocation_mode); |
9923 receiver->set_known_initial_map(initial_map); | 9913 receiver->set_known_initial_map(initial_map); |
9924 | 9914 |
9925 // Initialize map and fields of the newly allocated object. | 9915 // Initialize map and fields of the newly allocated object. |
9926 { NoObservableSideEffectsScope no_effects(this); | 9916 { NoObservableSideEffectsScope no_effects(this); |
9927 DCHECK(initial_map->instance_type() == JS_OBJECT_TYPE); | 9917 DCHECK(initial_map->instance_type() == JS_OBJECT_TYPE); |
9928 Add<HStoreNamedField>(receiver, | 9918 Add<HStoreNamedField>(receiver, |
9929 HObjectAccess::ForMapAndOffset(initial_map, JSObject::kMapOffset), | 9919 HObjectAccess::ForMapAndOffset(initial_map, JSObject::kMapOffset), |
9930 Add<HConstant>(initial_map)); | 9920 Add<HConstant>(initial_map)); |
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13554 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); | 13544 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); |
13555 } | 13545 } |
13556 | 13546 |
13557 #ifdef DEBUG | 13547 #ifdef DEBUG |
13558 graph_->Verify(false); // No full verify. | 13548 graph_->Verify(false); // No full verify. |
13559 #endif | 13549 #endif |
13560 } | 13550 } |
13561 | 13551 |
13562 } // namespace internal | 13552 } // namespace internal |
13563 } // namespace v8 | 13553 } // namespace v8 |
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