1 /** 2 * This is the C++ adaptation and derivative work of Myia (https://github.com/mila-iqia/myia/). 3 * 4 * Copyright 2019-2020 Huawei Technologies Co., Ltd 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 #ifndef MINDSPORE_CCSRC_FRONTEND_OPTIMIZER_CSE_PASS_H_ 20 #define MINDSPORE_CCSRC_FRONTEND_OPTIMIZER_CSE_PASS_H_ 21 22 #include <vector> 23 #include <unordered_map> 24 #include <memory> 25 26 #include "frontend/optimizer/cse.h" 27 28 #include "frontend/optimizer/optimizer.h" 29 30 namespace mindspore { 31 /* namespace to support opt */ 32 namespace opt { 33 // Common subexpression elimination. 34 class CSEPass : public CSE { 35 public: CSE()36 explicit CSEPass(bool report_changes = true) : CSE(), report_changes_(report_changes) {} 37 virtual ~CSEPass() = default; 38 operator()39 bool operator()(const FuncGraphPtr &root, const OptimizerPtr &optimizer) { 40 bool chg = Cse(root, optimizer->resource()->manager()); 41 return chg && report_changes_; 42 } 43 44 private: 45 bool report_changes_; 46 }; 47 } // namespace opt 48 } // namespace mindspore 49 50 #endif // MINDSPORE_CCSRC_FRONTEND_OPTIMIZER_CSE_PASS_H_ 51