1 | /* Copyright 2018 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 | #include "tensorflow/core/common_runtime/graph_constructor.h" |
16 | #include "tensorflow/core/graph/node_builder.h" |
17 | #include "tensorflow/tools/graph_transforms/transform_utils.h" |
18 | |
19 | namespace tensorflow { |
20 | namespace graph_transforms { |
21 | |
22 | // Remove control dependencies in preparation for inference. |
23 | // In the tensorflow graph, control dependencies are represented as extra |
24 | // inputs which are referenced with "^tensor_name". |
25 | // See node_def.proto for more details. |
26 | Status RemoveControlDependencies(const GraphDef& input_graph_def, |
27 | const TransformFuncContext& context, |
28 | GraphDef* output_graph_def) { |
29 | output_graph_def->Clear(); |
30 | for (const NodeDef& node : input_graph_def.node()) { |
31 | NodeDef* new_node = output_graph_def->mutable_node()->Add(); |
32 | *new_node = node; |
33 | new_node->clear_input(); |
34 | for (const auto& input : node.input()) { |
35 | if (input[0] != '^') { |
36 | new_node->add_input(input); |
37 | } |
38 | } |
39 | } |
40 | return OkStatus(); |
41 | } |
42 | |
43 | REGISTER_GRAPH_TRANSFORM("remove_control_dependencies", RemoveControlDependencies); |
44 | |
45 | } // namespace graph_transforms |
46 | } // namespace tensorflow |
47 |