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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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2329 } | 2329 } |
2330 Type* type() const { return type_; } | 2330 Type* type() const { return type_; } |
2331 Handle<String> name() const { return name_; } | 2331 Handle<String> name() const { return name_; } |
2332 | 2332 |
2333 bool IsJSObjectFieldAccessor() { | 2333 bool IsJSObjectFieldAccessor() { |
2334 int offset; // unused | 2334 int offset; // unused |
2335 return Accessors::IsJSObjectFieldAccessor<Type>(type_, name_, &offset); | 2335 return Accessors::IsJSObjectFieldAccessor<Type>(type_, name_, &offset); |
2336 } | 2336 } |
2337 | 2337 |
2338 bool GetJSObjectFieldAccess(HObjectAccess* access) { | 2338 bool GetJSObjectFieldAccess(HObjectAccess* access) { |
2339 if (IsArrayLength()) { | |
2340 *access = HObjectAccess::ForArrayLength(map()->elements_kind()); | |
2341 return true; | |
2342 } | |
2343 int offset; | 2339 int offset; |
2344 if (Accessors::IsJSObjectFieldAccessor<Type>(type_, name_, &offset)) { | 2340 if (Accessors::IsJSObjectFieldAccessor<Type>(type_, name_, &offset)) { |
2345 if (type_->Is(Type::String())) { | 2341 if (type_->Is(Type::String())) { |
2346 ASSERT(name_->Equals(isolate()->heap()->length_string())); | 2342 ASSERT(name_->Equals(isolate()->heap()->length_string())); |
2347 *access = HObjectAccess::ForStringLength(); | 2343 *access = HObjectAccess::ForStringLength(); |
| 2344 } else if (type_->Is(Type::Array())) { |
| 2345 ASSERT(name_->Equals(isolate()->heap()->length_string())); |
| 2346 *access = HObjectAccess::ForArrayLength(map()->elements_kind()); |
2348 } else { | 2347 } else { |
2349 *access = HObjectAccess::ForMapAndOffset(map(), offset); | 2348 *access = HObjectAccess::ForMapAndOffset(map(), offset); |
2350 } | 2349 } |
2351 return true; | 2350 return true; |
2352 } | 2351 } |
2353 return false; | 2352 return false; |
2354 } | 2353 } |
2355 | 2354 |
2356 bool has_holder() { return !holder_.is_null(); } | 2355 bool has_holder() { return !holder_.is_null(); } |
2357 bool IsLoad() const { return access_type_ == LOAD; } | 2356 bool IsLoad() const { return access_type_ == LOAD; } |
2358 | 2357 |
2359 LookupResult* lookup() { return &lookup_; } | 2358 LookupResult* lookup() { return &lookup_; } |
2360 Handle<JSObject> holder() { return holder_; } | 2359 Handle<JSObject> holder() { return holder_; } |
2361 Handle<JSFunction> accessor() { return accessor_; } | 2360 Handle<JSFunction> accessor() { return accessor_; } |
2362 Handle<Object> constant() { return constant_; } | 2361 Handle<Object> constant() { return constant_; } |
2363 Handle<Object> transition() { return transition_; } | 2362 Handle<Object> transition() { return transition_; } |
2364 HObjectAccess access() { return access_; } | 2363 HObjectAccess access() { return access_; } |
2365 | 2364 |
2366 private: | 2365 private: |
2367 Type* ToType(Handle<Map> map) { return builder_->ToType(map); } | 2366 Type* ToType(Handle<Map> map) { return builder_->ToType(map); } |
2368 Isolate* isolate() { return lookup_.isolate(); } | 2367 Isolate* isolate() { return lookup_.isolate(); } |
2369 CompilationInfo* current_info() { return builder_->current_info(); } | 2368 CompilationInfo* current_info() { return builder_->current_info(); } |
2370 | 2369 |
2371 bool IsArrayLength() { | |
2372 return map()->instance_type() == JS_ARRAY_TYPE && | |
2373 name_->Equals(isolate()->heap()->length_string()); | |
2374 } | |
2375 | |
2376 bool LoadResult(Handle<Map> map); | 2370 bool LoadResult(Handle<Map> map); |
2377 bool LookupDescriptor(); | 2371 bool LookupDescriptor(); |
2378 bool LookupInPrototypes(); | 2372 bool LookupInPrototypes(); |
2379 bool IsCompatible(PropertyAccessInfo* other); | 2373 bool IsCompatible(PropertyAccessInfo* other); |
2380 | 2374 |
2381 void GeneralizeRepresentation(Representation r) { | 2375 void GeneralizeRepresentation(Representation r) { |
2382 access_ = access_.WithRepresentation( | 2376 access_ = access_.WithRepresentation( |
2383 access_.representation().generalize(r)); | 2377 access_.representation().generalize(r)); |
2384 } | 2378 } |
2385 | 2379 |
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2746 } | 2740 } |
2747 | 2741 |
2748 private: | 2742 private: |
2749 HGraphBuilder* builder_; | 2743 HGraphBuilder* builder_; |
2750 }; | 2744 }; |
2751 | 2745 |
2752 | 2746 |
2753 } } // namespace v8::internal | 2747 } } // namespace v8::internal |
2754 | 2748 |
2755 #endif // V8_HYDROGEN_H_ | 2749 #endif // V8_HYDROGEN_H_ |
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