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Merge output shape with input shape instead of override #2578

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Merged
justinchuby merged 1 commit into from
Sep 30, 2025
Merged

Merge output shape with input shape instead of override #2578

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4 changes: 1 addition & 3 deletions onnxscript/optimizer/_constant_folding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -491,9 +491,7 @@ def cast(node: ir.Node, op, state: OptimizerState) -> ReturnValue:
# should handle this. Only the optimization to eliminate redundant Cast ops
# should be needed here.

input_shape = input.shape
if input_shape is not None:
output.shape = input_shape.copy()
output.shape = _merge_shapes(output.shape, input.shape)

input_dtype = _get_input_element_type(node, 0)
output_dtype = _get_int_attribute(node, "to", None)
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