1 /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 // An optimization pass that performs common subexpression elimination. 17 18 #ifndef TENSORFLOW_GRAPH_OPTIMIZER_CSE_H_ 19 #define TENSORFLOW_GRAPH_OPTIMIZER_CSE_H_ 20 21 #include <sys/types.h> 22 #include "tensorflow/core/graph/graph.h" 23 24 namespace tensorflow { 25 26 // Perform common-subexpression elimination on the graph "*g". If 27 // "consider_fn" is not nullptr, then only nodes for which 28 // consider_fn(node) returns true will be considered for combining 29 // during the common subexpression elimination. 30 // 31 // Returns true if and only if 'g' is mutated. 32 extern bool OptimizeCSE(Graph* g, 33 const std::function<bool(const Node*)>& consider_fn); 34 35 } // namespace tensorflow 36 37 #endif // TENSORFLOW_GRAPH_OPTIMIZER_CSE_H_ 38
