masahi commented on a change in pull request #9795:
URL: https://github.com/apache/tvm/pull/9795#discussion_r774143427
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File path: python/tvm/relay/frontend/pytorch.py
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@@ -1735,14 +1735,19 @@ def pad(inputs, input_types):
paddings = [paddings[i : i + 2] for i in range(0, len(paddings),
2)]
const_paddings = []
+ non_zero_found = False
for pad in paddings:
const_paddings.append([])
for p in pad:
if not isinstance(p, int):
p = int(_infer_value(p, {}).numpy())
const_paddings[-1].append(p)
+ if p != 0:
+ non_zero_found = True
- if mode == "constant":
+ if not non_zero_found:
+ return data
Review comment:
This is a minor optimization but it non-trivially helped performance on
the DETR model. @comaniac
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