[llvm] [AArch64] New subtarget features to control ldp and stp formation, fo… (PR #66098)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

Sorry I missed that the check lines are still a bit off. If you fix that then this LGTM. Thanks

https://github.com/llvm/llvm-project/pull/66098