tree 6af84ed55359741be0c4ba5d6f69817ab6b919a2
parent e07f3174b1a7971e50f4fdda0363f24114331e8c
author Max191 <44243577+Max191@users.noreply.github.com> 1719448869 -0400
committer GitHub <noreply@github.com> 1719448869 -0400
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[Im2col] Add decomposition pass for iree_linalg_ext.im2col (#17728)

This PR adds a pass for decomposing the `iree_linalg_ext.im2col` op into
serial loops of `extract_slice->copy->insert_slice`. The pass tries to
keep the innermost dimension of the iteration space un-tiled when the
inner slice is contiguous, but otherwise falls back to serial loops of
scalar slices. The outer dimensions (`B` and `M`) of the iteration
space, however, are always tiled to 1.

---------

Signed-off-by: Max Dawkins <max.dawkins@gmail.com>