[llvm] [llvm-exegesis] Add Pfm Counters for SapphireRapids (PR #113847)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

Going to merge this as I need this to do cycles measurements on Sapphire Rapids. Happy to continue discussing the optimization manual discrepancy more post-commit.

If it's actually an issue, the alder lake mappings need to be updated too, so probably better as a follow up PR assuming there's an issue.

https://github.com/llvm/llvm-project/pull/113847