[clang] [compiler-rt] [llvm] [X86] AMD Zen 5 Initial enablement (PR #107964)

[Simon Pilgrim via cfe-commits]

RKSimon wrote:

@ganeshgit Ignore what I said earlier about waiting for the tuning patches :) Please can we get this committed to trunk, we'll let it brew for a few days and then cherry pick for 19.x - if you can create PRs for the tuning changes as soon as possible we can review them for 19.x on a case by case basis.

https://github.com/llvm/llvm-project/pull/107964