[llvm] [llvm-exegesis] Adding in llvm-exegesis for Aarch64 for handling FPR8/16/32 and FPCR setReg warning (PR #130595)

[Sjoerd Meijer via llvm-commits]

https://github.com/sjoerdmeijer approved this pull request.

LGTM.

Let's wait a day with merging this in case Dave has more comments. 

https://github.com/llvm/llvm-project/pull/130595