Tuple Slice with both negative and positive stepped size (#48660)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48660
We used to support tuple slicing without any step size before, but this PR extends this feature to support arbitrary step size. We do this by manually reconstructing a new tuple in the IR instead of relying on TupleSlice prim.
Test Plan:
python tests
Imported from OSS
Reviewed By: gmagogsfm
Differential Revision: D25359336
fbshipit-source-id: 28cde536f28dd8a00607814b2900765e177f0ed7
