[libcxx-commits] [libcxx] [libc++] Replace `__compressed_pair` with `[[no_unique_address]]` (PR #76756)

[Louis Dionne via libcxx-commits]

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

Some more comments based on 1:1. Thanks @leni536 for the heads up on aligned type, this was a fruitful can of worms to open.

https://github.com/llvm/llvm-project/pull/76756