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_CONTROL_FLOW_OPTIMIZER_H_ |
| 6 | #define V8_COMPILER_CONTROL_FLOW_OPTIMIZER_H_ |
| 7 | |
| 8 | #include "src/compiler/node-marker.h" |
| 9 | #include "src/zone-containers.h" |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | namespace compiler { |
| 14 | |
| 15 | // Forward declarations. |
| 16 | class CommonOperatorBuilder; |
| 17 | class Graph; |
| 18 | class MachineOperatorBuilder; |
| 19 | class Node; |
| 20 | |
| 21 | |
| 22 | class ControlFlowOptimizer final { |
| 23 | public: |
| 24 | ControlFlowOptimizer(Graph* graph, CommonOperatorBuilder* common, |
| 25 | MachineOperatorBuilder* machine, Zone* zone); |
| 26 | |
| 27 | void Optimize(); |
| 28 | |
| 29 | private: |
| 30 | void Enqueue(Node* node); |
| 31 | void VisitNode(Node* node); |
| 32 | void VisitBranch(Node* node); |
| 33 | |
| 34 | bool TryBuildSwitch(Node* node); |
| 35 | bool TryCloneBranch(Node* node); |
| 36 | |
| 37 | Graph* graph() const { return graph_; } |
| 38 | CommonOperatorBuilder* common() const { return common_; } |
| 39 | MachineOperatorBuilder* machine() const { return machine_; } |
| 40 | Zone* zone() const { return zone_; } |
| 41 | |
| 42 | Graph* const graph_; |
| 43 | CommonOperatorBuilder* const common_; |
| 44 | MachineOperatorBuilder* const machine_; |
| 45 | ZoneQueue<Node*> queue_; |
| 46 | NodeMarker<bool> queued_; |
| 47 | Zone* const zone_; |
| 48 | |
| 49 | DISALLOW_COPY_AND_ASSIGN(ControlFlowOptimizer); |
| 50 | }; |
| 51 | |
| 52 | } // namespace compiler |
| 53 | } // namespace internal |
| 54 | } // namespace v8 |
| 55 | |
| 56 | #endif // V8_COMPILER_CONTROL_FLOW_OPTIMIZER_H_ |