[llvm] [AArch64][LoopIdiom] Generalize AArch64LoopIdiomTransform into LoopIdiomVectorize (PR #94081)

[Nikita Popov via llvm-commits]

nikic wrote:

I'm happy with the new naming, thanks! It looks like this PR needs a rebase due to some conflicts.

I'd generally recommend to split the move and rename off from the other code changes you do here. I assume that those are all NFC refactorings, but they look non-trivial enough that they probably shouldn't be part of the code move.

https://github.com/llvm/llvm-project/pull/94081