[llvm] [VectorCombine] foldShuffleToIdentity - handle bitcasts with equal element counts (PR #97731)

[David Green via llvm-commits]

davemgreen wrote:

> Thanks, do you have any preference on how best to extend this?

Hi - I haven't thought about them too much. Maybe they can be treated a bit like shuffles?

https://github.com/llvm/llvm-project/pull/97731