[libcxx-commits] [libcxx] [libcxx] Use generic builtins for popcount, clz and ctz (PR #86563)

[Mark de Wever via libcxx-commits]

https://github.com/mordante requested changes to this pull request.

I've one minor comment, other than that it LGTM.

There is one issue; our CI is not testing with a Clang version that has https://github.com/llvm/llvm-project/pull/86577. I will look at that and let you know when the CI is ready to really test this patch. Hence the "Request changes" status.

https://github.com/llvm/llvm-project/pull/86563