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

[Min-Yih Hsu via llvm-commits]

mshockwave wrote:

> (Alternatively, if this is no longer AArch64 specific, can it be merged into the general LoopIdiom pass? But that's probably a more involved change.)

Sorry I missed this question: I tried this but doesn't feel like what LoopIdiom is doing now (pattern matching and turn into libcalls) is somewhat related but not directed related to what this Pass does (pattern matching and turn into vector instructions). And yes, it's a more involved change. So I'm more inclined to not do the merge, at least for now.

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