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#ifndef TENSORFLOW_TOOLS_GRAPH_TRANSFORMS_FOLD_CONSTANTS_LIB_H_
17#define TENSORFLOW_TOOLS_GRAPH_TRANSFORMS_FOLD_CONSTANTS_LIB_H_
18
19#include "tensorflow/core/framework/graph.pb.h"
20#include "tensorflow/core/lib/core/status.h"
21#include "tensorflow/tools/graph_transforms/transform_utils.h"
22
23namespace tensorflow {
24namespace graph_transforms {
25
26// Finds sub-graphs that evaluate to constant expressions, and replaces them
27// with Const nodes, to simplify the graph. The inputs and outputs arguments are
28// the names of all the nodes that data is fed into, or read out of, when the
29// graph is actually run.
30Status FoldConstants(const GraphDef& input_graph_def,
31 const TransformFuncContext& context,
32 GraphDef* output_graph_def);
33
34// Analyzes which nodes are used for the given set of inputs and outputs, and
35// returns a copy of the graph with any that aren't used removed.
36Status RemoveUnusedNodes(const GraphDef& input_graph_def,
37 const TransformFuncContext& context,
38 GraphDef* output_graph_def);
39
40} // namespace graph_transforms
41} // namespace tensorflow
42
43#endif // TENSORFLOW_TOOLS_GRAPH_TRANSFORMS_FOLD_CONSTANTS_LIB_H_
44