| Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_COMPILER_JS_CONTEXT_RELAXATION_H_ |
| 6 | #define V8_COMPILER_JS_CONTEXT_RELAXATION_H_ |
| 7 | |
| 8 | #include "src/compiler/graph-reducer.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | namespace compiler { |
| 13 | |
| 14 | // Ensures that operations that only need to access the native context use the |
| 15 | // outer-most context rather than the specific context given by the AST graph |
| 16 | // builder. This makes it possible to use these operations with context |
| 17 | // specialization (e.g. for generating stubs) without forcing inner contexts to |
| 18 | // be embedded in generated code thus causing leaks and potentially using the |
| 19 | // wrong native context (i.e. stubs are shared between native contexts). |
| 20 | class JSContextRelaxation final : public Reducer { |
| 21 | public: |
| 22 | JSContextRelaxation() {} |
| 23 | ~JSContextRelaxation() final {} |
| 24 | |
| 25 | Reduction Reduce(Node* node) final; |
| 26 | }; |
| 27 | |
| 28 | } // namespace compiler |
| 29 | } // namespace internal |
| 30 | } // namespace v8 |
| 31 | |
| 32 | #endif // V8_COMPILER_JS_CONTEXT_RELAXATION_H_ |