[clang] [clang-tools-extra] [libcxx] [compiler-rt] [llvm] [libc] [flang] [AMDGPU] - Add constant folding to s_wqm intrinsic (PR #72382)

[Nicolai Hähnle via cfe-commits]

https://github.com/nhaehnle approved this pull request.

LGTM w/ a squash.

BTW, I'm not a fan of merge commits in PRs. I find it makes it more confusing to review.

https://github.com/llvm/llvm-project/pull/72382