[llvm] [AArch64] Neoverse V1 scheduling info (PR #126707)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

Hi - quite a lot is changing here and I'm not sure about some of the details. It is probably worth splitting it up into smaller patches or pulling some of the more obvious parts out so they can be reviewed separately.

As quite a lot is changing, do you have performance results?

https://github.com/llvm/llvm-project/pull/126707