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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 "hydrogen.h" | 5 #include "hydrogen.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "v8.h" | 9 #include "v8.h" |
10 #include "allocation-site-scopes.h" | 10 #include "allocation-site-scopes.h" |
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7871 | 7871 |
7872 ast_context()->ReturnValue(result); | 7872 ast_context()->ReturnValue(result); |
7873 return true; | 7873 return true; |
7874 } | 7874 } |
7875 case kArrayPush: { | 7875 case kArrayPush: { |
7876 if (receiver_map.is_null()) return false; | 7876 if (receiver_map.is_null()) return false; |
7877 if (receiver_map->instance_type() != JS_ARRAY_TYPE) return false; | 7877 if (receiver_map->instance_type() != JS_ARRAY_TYPE) return false; |
7878 ElementsKind elements_kind = receiver_map->elements_kind(); | 7878 ElementsKind elements_kind = receiver_map->elements_kind(); |
7879 if (!IsFastElementsKind(elements_kind)) return false; | 7879 if (!IsFastElementsKind(elements_kind)) return false; |
7880 if (receiver_map->is_observed()) return false; | 7880 if (receiver_map->is_observed()) return false; |
| 7881 if (JSArray::IsReadOnlyLengthDescriptor(receiver_map)) return false; |
7881 ASSERT(receiver_map->is_extensible()); | 7882 ASSERT(receiver_map->is_extensible()); |
7882 | 7883 |
7883 // If there may be elements accessors in the prototype chain, the fast | 7884 // If there may be elements accessors in the prototype chain, the fast |
7884 // inlined version can't be used. | 7885 // inlined version can't be used. |
7885 if (receiver_map->DictionaryElementsInPrototypeChainOnly()) return false; | 7886 if (receiver_map->DictionaryElementsInPrototypeChainOnly()) return false; |
7886 // If there currently can be no elements accessors on the prototype chain, | 7887 // If there currently can be no elements accessors on the prototype chain, |
7887 // it doesn't mean that there won't be any later. Install a full prototype | 7888 // it doesn't mean that there won't be any later. Install a full prototype |
7888 // chain check to trap element accessors being installed on the prototype | 7889 // chain check to trap element accessors being installed on the prototype |
7889 // chain, which would cause elements to go to dictionary mode and result | 7890 // chain, which would cause elements to go to dictionary mode and result |
7890 // in a map change. | 7891 // in a map change. |
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11802 if (ShouldProduceTraceOutput()) { | 11803 if (ShouldProduceTraceOutput()) { |
11803 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); | 11804 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); |
11804 } | 11805 } |
11805 | 11806 |
11806 #ifdef DEBUG | 11807 #ifdef DEBUG |
11807 graph_->Verify(false); // No full verify. | 11808 graph_->Verify(false); // No full verify. |
11808 #endif | 11809 #endif |
11809 } | 11810 } |
11810 | 11811 |
11811 } } // namespace v8::internal | 11812 } } // namespace v8::internal |
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