swift

16627a06 - Merge pull request #75703 from gottesmm/pr-12c964b902efd010879d6af6f3ccc0d59563908c

Merge pull request #75703 from gottesmm/pr-12c964b902efd010879d6af6f3ccc0d59563908c [region-isolation] Re-group diagnostics in header based on which diagnostic emitter they are used by.