40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
"""
|
|
Copyright (C) 2018-2020 Intel Corporation
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
"""
|
|
|
|
from mo.graph.graph import Graph
|
|
from mo.middle.passes.eliminate import remove_op_node_with_data_node
|
|
from mo.middle.replacement import MiddleReplacementPattern
|
|
|
|
|
|
class ConstSwitchEraser(MiddleReplacementPattern):
|
|
"""
|
|
Erases switch operation and its constant input after data and control flow infer
|
|
"""
|
|
enabled = True
|
|
|
|
def run_after(self):
|
|
from extensions.middle.pass_separator import MiddleStart
|
|
return [MiddleStart]
|
|
|
|
def find_and_replace_pattern(self, graph: Graph):
|
|
for node in graph.pseudo_topological_sort():
|
|
if node.kind == 'data' or node.op != 'Switch':
|
|
continue
|
|
switch_op_node = node
|
|
pred_id_data_node = switch_op_node.in_node(1)
|
|
graph.remove_edge(pred_id_data_node.id, switch_op_node.id)
|
|
remove_op_node_with_data_node(graph, switch_op_node)
|