[libcxx-commits] [libcxx] [Clang] Add __builtin_vectorelements to get number of elements in vector (PR #69010)

[Lawrence Benson via libcxx-commits]

lawben wrote:

> Also, needs a release note.

How do I do this? I cannot seem to find documentation on the process...

https://github.com/llvm/llvm-project/pull/69010