[llvm] [VectorCombine] Allow shuffling with bitcast for not multiple offset for loadsize (PR #119139)

[Simon Pilgrim via llvm-commits]

RKSimon wrote:

> @RKSimon I've never done that, so I'm a little worried. Can we try it first in another PR with one commit?

In many circumstances you can just use the "Update branch" button on this webpage - I've used it to merge to latest, and it restarts the CI as well.

https://github.com/llvm/llvm-project/pull/119139