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

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ganeshgit wrote:

> Zen 5 support in GCC was upstreamed more than half a year ago -- why is the LLVM support being upstreamed only now, after missing the 19.x window? What steps are being taken to ensure this does not happen again?
> 
> The change to X86TargetParser.h looks ABI breaking to me.

We have a dependency in libpfm for llvm which requires legal clearances. In future, we will make sure this gets addressed in advance and will try to upload our patches in sync with GCC patches. Apologies for the inconvenience.

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