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[Relay][Bugfix] fix the wrong calculate logic of operator flip in PyTorch frontend#15752

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MasterJH5574 merged 3 commits intoapache:mainfrom
jikechao:fix_flip
Sep 16, 2023
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[Relay][Bugfix] fix the wrong calculate logic of operator flip in PyTorch frontend#15752
MasterJH5574 merged 3 commits intoapache:mainfrom
jikechao:fix_flip

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@jikechao jikechao commented Sep 15, 2023

The original implementation of Flip in PyTorch converter mistaken the type of attribute axis in the Flip operator as an integer. Thus, It only parses the first element of the axis and will give a wrong calculation result when the length of axis is more than one. According to the PyTorch documentation here, the type of axis is a list or tuple.

This PR corrected the incorrect implementation of the algorithm of torch.flip converter and added a regression test.

cc @echuraev @Hzfengsy @MasterJH5574

correct the calculate logic of flip in pytorch converter
@jikechao jikechao changed the title [Relay][Bugfix] fix the calculate logic of operator Flip in PyTorch frontend [Relay][Bugfix] fix the wrong calculate logic of operator flip in PyTorch frontend Sep 15, 2023
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@vvchernov vvchernov left a comment

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LGTM

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@echuraev echuraev left a comment

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In general LGTM. Thanks for fixing bugs in TVM! Small comment.

Comment thread python/tvm/relay/frontend/pytorch.py Outdated
Co-authored-by: Egor Churaev <egor.churaev@gmail.com>
@jikechao jikechao requested a review from echuraev September 15, 2023 13:15
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LGTM. Thanks!

@MasterJH5574 MasterJH5574 merged commit 61d5be0 into apache:main Sep 16, 2023
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4 participants