Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_COMPILER_JS_GLOBAL_OBJECT_SPECIALIZATION_H_ |
| 6 | #define V8_COMPILER_JS_GLOBAL_OBJECT_SPECIALIZATION_H_ |
| 7 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 8 | #include "src/compiler/graph-reducer.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | |
| 13 | // Forward declarations. |
| 14 | class CompilationDependencies; |
| 15 | class TypeCache; |
| 16 | |
| 17 | |
| 18 | namespace compiler { |
| 19 | |
| 20 | // Forward declarations. |
| 21 | class CommonOperatorBuilder; |
| 22 | class JSGraph; |
| 23 | class JSOperatorBuilder; |
| 24 | class SimplifiedOperatorBuilder; |
| 25 | |
| 26 | |
| 27 | // Specializes a given JSGraph to a given global object, potentially constant |
| 28 | // folding some {JSLoadGlobal} nodes or strength reducing some {JSStoreGlobal} |
| 29 | // nodes. |
| 30 | class JSGlobalObjectSpecialization final : public AdvancedReducer { |
| 31 | public: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 32 | JSGlobalObjectSpecialization(Editor* editor, JSGraph* jsgraph, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 33 | MaybeHandle<Context> native_context, |
| 34 | CompilationDependencies* dependencies); |
| 35 | |
| 36 | Reduction Reduce(Node* node) final; |
| 37 | |
| 38 | private: |
| 39 | Reduction ReduceJSLoadGlobal(Node* node); |
| 40 | Reduction ReduceJSStoreGlobal(Node* node); |
| 41 | |
| 42 | // Retrieve the global object from the given {node} if known. |
| 43 | MaybeHandle<JSGlobalObject> GetGlobalObject(Node* node); |
| 44 | |
| 45 | struct ScriptContextTableLookupResult; |
| 46 | bool LookupInScriptContextTable(Handle<JSGlobalObject> global_object, |
| 47 | Handle<Name> name, |
| 48 | ScriptContextTableLookupResult* result); |
| 49 | |
| 50 | Graph* graph() const; |
| 51 | JSGraph* jsgraph() const { return jsgraph_; } |
| 52 | Isolate* isolate() const; |
| 53 | CommonOperatorBuilder* common() const; |
| 54 | JSOperatorBuilder* javascript() const; |
| 55 | SimplifiedOperatorBuilder* simplified() const; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 56 | MaybeHandle<Context> native_context() const { return native_context_; } |
| 57 | CompilationDependencies* dependencies() const { return dependencies_; } |
| 58 | |
| 59 | JSGraph* const jsgraph_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 60 | MaybeHandle<Context> native_context_; |
| 61 | CompilationDependencies* const dependencies_; |
| 62 | TypeCache const& type_cache_; |
| 63 | |
| 64 | DISALLOW_COPY_AND_ASSIGN(JSGlobalObjectSpecialization); |
| 65 | }; |
| 66 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 67 | } // namespace compiler |
| 68 | } // namespace internal |
| 69 | } // namespace v8 |
| 70 | |
| 71 | #endif // V8_COMPILER_JS_GLOBAL_OBJECT_SPECIALIZATION_H_ |