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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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 #ifndef V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_ | 5 #ifndef V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_ |
6 #define V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_ | 6 #define V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_ |
7 | 7 |
8 #include "src/compiler/graph-reducer.h" | 8 #include "src/compiler/graph-reducer.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
11 namespace internal { | 11 namespace internal { |
12 namespace compiler { | 12 namespace compiler { |
13 | 13 |
14 // Forward declarations. | 14 // Forward declarations. |
15 class JSGraph; | 15 class JSGraph; |
16 class JSOperatorBuilder; | 16 class JSOperatorBuilder; |
17 | 17 |
18 | 18 |
19 // Specializes a given JSGraph to a given context, potentially constant folding | 19 // Specializes a given JSGraph to a given context, potentially constant folding |
20 // some {LoadContext} nodes or strength reducing some {StoreContext} nodes. | 20 // some {LoadContext} nodes or strength reducing some {StoreContext} nodes. |
21 class JSContextSpecializer : public AdvancedReducer { | 21 class JSContextSpecializer final : public AdvancedReducer { |
22 public: | 22 public: |
23 JSContextSpecializer(Editor* editor, JSGraph* jsgraph) | 23 JSContextSpecializer(Editor* editor, JSGraph* jsgraph, int context_index, |
24 : AdvancedReducer(editor), jsgraph_(jsgraph) {} | 24 MaybeHandle<Context> context) |
| 25 : AdvancedReducer(editor), |
| 26 jsgraph_(jsgraph), |
| 27 context_index_(context_index), |
| 28 context_(context) {} |
25 | 29 |
26 Reduction Reduce(Node* node) override; | 30 Reduction Reduce(Node* node) final; |
27 | 31 |
28 // Visible for unit testing. | 32 private: |
| 33 Reduction ReduceParameter(Node* node); |
29 Reduction ReduceJSLoadContext(Node* node); | 34 Reduction ReduceJSLoadContext(Node* node); |
30 Reduction ReduceJSStoreContext(Node* node); | 35 Reduction ReduceJSStoreContext(Node* node); |
31 | 36 |
32 private: | |
33 Isolate* isolate() const; | 37 Isolate* isolate() const; |
34 JSOperatorBuilder* javascript() const; | 38 JSOperatorBuilder* javascript() const; |
35 JSGraph* jsgraph() const { return jsgraph_; } | 39 JSGraph* jsgraph() const { return jsgraph_; } |
| 40 int context_index() const { return context_index_; } |
| 41 MaybeHandle<Context> context() const { return context_; } |
36 | 42 |
37 JSGraph* const jsgraph_; | 43 JSGraph* const jsgraph_; |
| 44 int const context_index_; |
| 45 MaybeHandle<Context> context_; |
38 | 46 |
39 DISALLOW_COPY_AND_ASSIGN(JSContextSpecializer); | 47 DISALLOW_COPY_AND_ASSIGN(JSContextSpecializer); |
40 }; | 48 }; |
41 | 49 |
42 } // namespace compiler | 50 } // namespace compiler |
43 } // namespace internal | 51 } // namespace internal |
44 } // namespace v8 | 52 } // namespace v8 |
45 | 53 |
46 #endif // V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_ | 54 #endif // V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_ |
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