model-optimizer/extensions/middle/SwapAxesMiddleReplacer.py

   1 """
   2  Copyright (c) 2018-2019 Intel Corporation
   3
   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
   7
   8       http://www.apache.org/licenses/LICENSE-2.0
   9
  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.
  15 """
  16
  17 import numpy as np
  18
  19 from mo.graph.graph import Graph
  20 from mo.middle.replacement import MiddleReplacementPattern
  21 from mo.ops.reshape import Reshape
  22
  23
  24 class SwapAxesMiddleReplacer(MiddleReplacementPattern):
  25     enabled = False
  26
  27     def pattern(self):
  28         return dict(
  29             nodes=[('swapaxes', dict(kind='op', op='swapaxes'))],
  30             edges=[],
  31         )
  32
  33     def replace_pattern(self, graph: Graph, match: dict):
  34         """
  35             Replace swapaxes layer:
  36             swapaxes -> Reshape
  37         """
  38
  39         swapaxes = match['swapaxes']
  40         swapaxes_in_node = swapaxes.in_node()
  41         swapaxes_out_node = swapaxes.out_node()
  42
  43         input_edge_attrs = graph.get_edge_data(swapaxes_in_node.id, swapaxes.id)[0]
  44         output_edge_attrs = graph.get_edge_data(swapaxes.id, swapaxes_out_node.id)[0]
  45
  46         graph.remove_edge(swapaxes_in_node.id, swapaxes.id)
  47         graph.remove_edge(swapaxes.id, swapaxes_out_node.id)
  48         Reshape(graph, {'dim': np.array(swapaxes_in_node.shape)}).create_node_with_data(inputs=[swapaxes_in_node],
  49                                                                                         data_nodes=[swapaxes_out_node],
  50                                                                                         edge_attrs=[input_edge_attrs,
  51                                                                                                     output_edge_attrs])