1 /** 2 * Copyright 2019-2022 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef MINDSPORE_CCSRC_BACKEND_OPTIMIZER_PASS_COMMON_SUBEXPRESSION_ELIMINATION_H_ 17 #define MINDSPORE_CCSRC_BACKEND_OPTIMIZER_PASS_COMMON_SUBEXPRESSION_ELIMINATION_H_ 18 #include <string> 19 #include "include/backend/visible.h" 20 #include "include/backend/optimizer/pass.h" 21 #include "include/common/utils/cse.h" 22 23 namespace mindspore { 24 namespace opt { 25 class BACKEND_EXPORT CommonSubexpressionElimination : public Pass { 26 public: Pass(name)27 explicit CommonSubexpressionElimination(const std::string &name = "cse") : Pass(name) {} 28 ~CommonSubexpressionElimination() override = default; 29 bool Run(const FuncGraphPtr &func_graph) override; 30 }; 31 32 class BackendCSE : public CSE { 33 public: 34 BackendCSE() = default; 35 ~BackendCSE() override = default; 36 virtual bool CheckEqualCnodeInputs(const AnfNodePtr &main, const AnfNodePtr &node) const; 37 bool CheckReplace(const AnfNodePtr &main, const AnfNodePtr &node) override; 38 virtual bool CheckEqualKernelBuildInfo(const AnfNodePtr &main, const AnfNodePtr &node) const; 39 bool Cse(const FuncGraphPtr graph, const FuncGraphManagerPtr manager) override; 40 41 private: 42 bool CheckValueNode(const ValueNodePtr &main, const ValueNodePtr &node) const; 43 bool CheckCNode(const CNodePtr &main, const CNodePtr &node); 44 }; 45 } // namespace opt 46 } // namespace mindspore 47 48 #endif // MINDSPORE_CCSRC_BACKEND_OPTIMIZER_PASS_COMMON_SUBEXPRESSION_ELIMINATION_H_ 49