llvm-project

0f3e460e - [mlir][Tensor] Generalize the pattern to swap `tensor.collapse_shape` -> `tensor.expand_shape`. (#133819)

[mlir][Tensor] Generalize the pattern to swap `tensor.collapse_shape` -> `tensor.expand_shape`. (#133819) The current patterns compared the reassocation indices for the two ops and failed if neither of them were of size 1. This patch relaxes this restriction by handling a new case where the reassociation indices might be of the same size. Also generalizes to cases where when generating the swapped `tensor.expand_shape` -> `tensor.collapse_shape` if one of them is degenerate, those are not generated. Signed-off-by: MaheshRavishankar <mahesh.ravishankar@gmail.com>