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