[libc-commits] [libc] [libc] implement `memalignment` (PR #132493)

[Joseph Huber via libc-commits]

jhuber6 wrote:

> This should probably be an intrinsic so we don't introduce the ptrtoint, it's the opposite of llvm.ptrmask

Presumably we'd want a fallback for GCC, but that definitely sounds compelling considering that this is a freestanding function, so we could just implement it as a builitin in a header for that case.

https://github.com/llvm/llvm-project/pull/132493