1 /** 2 * This is the C++ adaptation and derivative work of Myia (https://github.com/mila-iqia/myia/). 3 * 4 * Copyright 2019-2022 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 <memory> 23 24 #include "utils/hash_map.h" 25 #include "include/common/utils/cse.h" 26 27 #include "frontend/optimizer/optimizer.h" 28 29 namespace mindspore { 30 /* namespace to support opt */ 31 namespace opt { 32 // Common subexpression elimination. 33 class CSEPass : public CSE { 34 public: CSE()35 explicit CSEPass(bool report_changes = true) : CSE(), report_changes_(report_changes) {} 36 virtual ~CSEPass() = default; 37 operator()38 bool operator()(const FuncGraphPtr &root, const OptimizerPtr &optimizer) { 39 bool chg = Cse(root, optimizer->resource()->manager()); 40 return chg && report_changes_; 41 } 42 43 private: 44 bool report_changes_; 45 }; 46 } // namespace opt 47 } // namespace mindspore 48 49 #endif // MINDSPORE_CCSRC_FRONTEND_OPTIMIZER_CSE_PASS_H_ 50