[clang] [compiler-rt] [llvm] [X86] AMD Zen 6 Initial enablement (PR #179150)

[Aiden Grossman via cfe-commits]

https://github.com/boomanaiden154 commented:

A couple of nits, but I think this broadly LGTM at this point. Please update the description to remove information about AVX512BMM now that has been split to a separate patch.

https://github.com/llvm/llvm-project/pull/179150