71 lines
2.3 KiB
Python
71 lines
2.3 KiB
Python
"""
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Copyright (C) 2018-2020 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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from mo.graph.graph import Graph
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from mo.middle.replacement import MiddleReplacementPattern
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class RemoveUselessConcatSplitPattern(MiddleReplacementPattern):
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"""
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Remove useless construction with concat and split like follows:
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/ / | \ \
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br1 br2 .. br(n-1)br(n)
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\ \ | / /
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concat
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split
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/ / | \ \
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br1 br2 .. br(n-1)br(n)
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"""
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enabled = True
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force_clean_up = True
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def run_after(self):
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from extensions.middle.ReplaceSpliceNodePattern import ReplaceSpliceNodePattern
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return [ReplaceSpliceNodePattern]
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@staticmethod
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def pattern():
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return dict(
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nodes=[('concat', dict(op='Concat')),
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('data', dict(kind='data')),
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('split', dict(op='Split'))],
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edges=[('concat', 'data'),
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('data', 'split')])
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@staticmethod
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def replace_pattern(graph: Graph, match: dict):
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concat_node = match['concat']
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split_node = match['split']
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# don't apply pass if concat have another outputs except split
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if len(concat_node.out_port(0).get_destinations()) != 1:
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return
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inputs = list(concat_node.in_ports().values())
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outputs = list(split_node.out_ports().values())
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if len(inputs) != len(outputs):
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return
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for i in range(len(inputs)):
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if not all(inputs[i].data.get_shape() == outputs[i].data.get_shape()):
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return
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for i in range(len(inputs)):
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outputs[i].get_connection().set_source(inputs[i].get_source())
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inputs[i].disconnect()
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