| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_COMPILER_OPTIMIZING_SSA_TYPE_PROPAGATION_H_ |
| #define ART_COMPILER_OPTIMIZING_SSA_TYPE_PROPAGATION_H_ |
| |
| #include "nodes.h" |
| |
| namespace art { |
| |
| // Compute and propagate types of phis in the graph. |
| class SsaTypePropagation : public ValueObject { |
| public: |
| explicit SsaTypePropagation(HGraph* graph) |
| : graph_(graph), worklist_(graph->GetArena(), kDefaultWorklistSize) {} |
| |
| void Run(); |
| |
| private: |
| void VisitBasicBlock(HBasicBlock* block); |
| void ProcessWorklist(); |
| void AddToWorklist(HPhi* phi); |
| void AddDependentInstructionsToWorklist(HPhi* phi); |
| |
| HGraph* const graph_; |
| GrowableArray<HPhi*> worklist_; |
| |
| static constexpr size_t kDefaultWorklistSize = 8; |
| |
| DISALLOW_COPY_AND_ASSIGN(SsaTypePropagation); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_COMPILER_OPTIMIZING_SSA_TYPE_PROPAGATION_H_ |