[clang] [llvm] [AArch64][SelectionDAG] Add CodeGen support for scalar FEAT_CPA (PR #105669)

[Rodolfo Wottrich via llvm-commits]

rgwott wrote:

@arichardson Yes, of course. It's just that this is low priority at work right now. I intend to come back to it in some days.

https://github.com/llvm/llvm-project/pull/105669