[clang] [clang-tools-extra] [llvm] [AArch64] Add an AArch64 pass for loop idiom transformations (PR #72273)

[David Green via cfe-commits]

https://github.com/davemgreen commented:

Thanks. I think it is worth trying to get this in. I already see it triggering in a number of places, it might be worth working on making it a little more generic in followup patches if we can, but there is already quite a bit going on.

https://github.com/llvm/llvm-project/pull/72273