[llvm] [LLVM][AArch64]Use load/store with consecutive registers in SME2 or S… (PR #77665)

[Sander de Smalen via llvm-commits]

https://github.com/sdesmalen-arm commented:

Hi @CarolineConcatto, thanks for making the changes. The logic looks pretty good to me. I merely left some nits, stylistic comments and requests for asserts, but am happy with the changes otherwise.

https://github.com/llvm/llvm-project/pull/77665