[clang] [C++20] [Modules] Introduce thin BMI (PR #71622)

[Ben Boeckel via cfe-commits]

mathstuf wrote:

> Since there is no meaningful review opinions here, let's continue it in a new and clean PR: https://github.com/llvm/llvm-project/pull/75894

Note that this leaves behind all who have hit "Subscribe" on this PR to keep tabs on things (I wish Github provided a way to mark-as-duplicate and merge the subscriber list). All of the references to this PR are now confused as well. What benefit does a "clean" PR provide?

https://github.com/llvm/llvm-project/pull/71622