[llvm] [AArch64] Combine ADDS with the non-flag setting versions and SUBS too. (PR #157563)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

My memory is that we didn't do this just because we didn't have a meaningful test case for it. It sounds OK to me.

Can you update the commit message to be a better description?

https://github.com/llvm/llvm-project/pull/157563