[Mlir-commits] [mlir] [mlir] Add pattern to bubble up and cancel `vector.shape_cast` (PR #75881)

[Jerry Wu]

pzread wrote:

> @pzread , do you have a motivating example for this? That would help start a discussion.

I was trying to use this pattern to resolve extra shape_cast generated with `populateDropUnitDimWithShapeCastPatterns` in https://github.com/openxla/iree/pull/15839 in some cases. But after more tests, it results in more shape_cast in some other cases...

I'll need to refine it again later.

https://github.com/llvm/llvm-project/pull/75881