[llvm] [AArch64] MI Scheduler: create more LDP/STP pairs (PR #77565)

[David Green via llvm-commits]

davemgreen wrote:

I think this sounds OK to go along with the other opcodes already handled. I presume that if it got this far that benchmarks looked OK too?

Can you split the debug messages out into a separate pr. I think they look if you wanted to just push them directly, but they should probably be committed separately.

https://github.com/llvm/llvm-project/pull/77565