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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_CONTROL_REDUCER_H_ | 5 #ifndef V8_COMPILER_CONTROL_REDUCER_H_ |
6 #define V8_COMPILER_CONTROL_REDUCER_H_ | 6 #define V8_COMPILER_CONTROL_REDUCER_H_ |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
| 10 |
| 11 // Forward declarations. |
| 12 class Zone; |
| 13 |
| 14 |
10 namespace compiler { | 15 namespace compiler { |
11 | 16 |
| 17 // Forward declarations. |
12 class JSGraph; | 18 class JSGraph; |
13 class CommonOperatorBuilder; | 19 class CommonOperatorBuilder; |
14 class Node; | 20 class Node; |
15 | 21 |
16 class ControlReducer { | 22 class ControlReducer { |
17 public: | 23 public: |
18 // Perform branch folding and dead code elimination on the graph. | 24 // Perform branch folding and dead code elimination on the graph. |
19 static void ReduceGraph(Zone* zone, JSGraph* graph, | 25 static void ReduceGraph(Zone* zone, JSGraph* graph, |
20 CommonOperatorBuilder* builder); | 26 CommonOperatorBuilder* builder); |
21 | 27 |
22 // Trim nodes in the graph that are not reachable from end. | 28 // Trim nodes in the graph that are not reachable from end. |
23 static void TrimGraph(Zone* zone, JSGraph* graph); | 29 static void TrimGraph(Zone* zone, JSGraph* graph); |
24 | 30 |
25 // Testing interface. | 31 // Testing interface. |
26 static Node* ReducePhiForTesting(JSGraph* graph, | 32 static Node* ReducePhiForTesting(JSGraph* graph, |
27 CommonOperatorBuilder* builder, Node* node); | 33 CommonOperatorBuilder* builder, Node* node); |
28 static Node* ReduceIfNodeForTesting(JSGraph* graph, | 34 static Node* ReduceIfNodeForTesting(JSGraph* graph, |
29 CommonOperatorBuilder* builder, | 35 CommonOperatorBuilder* builder, |
30 Node* node); | 36 Node* node); |
31 static Node* ReduceMergeForTesting(JSGraph* graph, | 37 static Node* ReduceMergeForTesting(JSGraph* graph, |
32 CommonOperatorBuilder* builder, | 38 CommonOperatorBuilder* builder, |
33 Node* node); | 39 Node* node); |
34 }; | 40 }; |
35 } | 41 } |
36 } | 42 } |
37 } // namespace v8::internal::compiler | 43 } // namespace v8::internal::compiler |
38 | 44 |
39 #endif // V8_COMPILER_CONTROL_REDUCER_H_ | 45 #endif // V8_COMPILER_CONTROL_REDUCER_H_ |
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