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Arm backend: Fix bug in ConvertExpandCopyToRepeatPass #7199

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Arm backend: Fix bug in ConvertExpandCopyToRepeatPass #7199

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6 changes: 4 additions & 2 deletions backends/arm/_passes/convert_expand_copy_to_repeat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -36,9 +36,11 @@ def call_operator(self, op, args, kwargs, meta):
]

# To convert expand arg to repeat arg, non-repeated dims should have
# multiples[dim] = 1.
# multiples[dim] = 1. Passing -1 to expand arg means
# not changing the size of that dimension.
multiples = [
multiples[i] if extended_shape[i] == 1 else 1 for i in range(expanded_rank)
multiples[i] if multiples[i] != -1 and extended_shape[i] == 1 else 1
for i in range(expanded_rank)
]
return super().call_operator(
op=self.repeat, args=(args[0], multiples), kwargs=kwargs, meta=meta
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1 change: 1 addition & 0 deletions backends/arm/test/ops/test_expand.py
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ class Expand(torch.nn.Module):
(torch.ones(1, 1, 2, 2), (4, 3, -1, 2)),
(torch.ones(1), (2, 2, 4)),
(torch.ones(3, 2, 4, 1), (-1, -1, -1, 3)),
(torch.ones(1, 1, 192), (1, -1, -1)),
]

def forward(self, x: torch.Tensor, multiples: Sequence):
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