[libcxx-commits] [libcxx] [DRAFT] [libc++] Use internal std::__is_sufficiently_aligned for atomic ref constructors and as helper for the public std::is_sufficiently_aligned (PR #188530)

[Michael Levine via libcxx-commits]

https://github.com/levinem ready_for_review https://github.com/llvm/llvm-project/pull/188530