2 Copyright (c) 2018-2019 Intel Corporation
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
8 http://www.apache.org/licenses/LICENSE-2.0
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.
19 from extensions.middle.ConstSwitchResolver import ConstSwitchEraser
20 from mo.graph.graph import Graph
21 from mo.middle.passes.eliminate import remove_op_node_with_data_node
22 from mo.middle.replacement import MiddleReplacementPattern
25 class UselessMergeEraser(MiddleReplacementPattern):
29 return [ConstSwitchEraser]
32 from extensions.middle.pass_separator import MiddleFinish
37 nodes=[('merge', dict(kind='op', op='Merge'))],
41 def replace_pattern(self, graph: Graph, match: dict):
42 if len(graph.in_edges(match['merge'].id)) <= 1:
43 remove_op_node_with_data_node(graph, match['merge'])
44 log.info("Useles Merge op and data nodes was deleted op='{}'".format(match['merge'].id))