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Fix removal of nodes ingested by multiple downstream nodes #544

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Merged
merged 1 commit into from
May 23, 2022
Merged

Fix removal of nodes ingested by multiple downstream nodes #544

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13 changes: 7 additions & 6 deletions hls4ml/model/graph.py
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Original file line number Diff line number Diff line change
Expand Up @@ -454,13 +454,14 @@ def remove_node(self, node, rewire=True):
if len(node.inputs) > 1 or len(node.outputs) > 1:
raise Exception('Cannot rewire a node with multiple inputs/outputs')
prev_node = self.graph.get(node.inputs[0])
next_node = next((x for x in self.graph.values() if node.outputs[0] in x.inputs), None)
next_nodes = [x for x in self.graph.values() if node.outputs[0] in x.inputs]
if prev_node is not None:
if next_node is not None:
for i,_ in enumerate(next_node.inputs):
if node.outputs[0] == next_node.inputs[i]:
next_node.inputs[i] = prev_node.outputs[0]
break
if len(next_nodes) > 0:
for next_node in next_nodes:
for i,_ in enumerate(next_node.inputs):
if node.outputs[0] == next_node.inputs[i]:
next_node.inputs[i] = prev_node.outputs[0]
break
else:
if not node.outputs[0] in self.outputs:
raise Exception('Cannot rewire a node without child')
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