[clang] Reapply "[Clang] [NFC] Introduce a helper for emitting compatibility diagnostics (#132348)" (PR #134043)

[via cfe-commits]

https://github.com/Sirraide closed 
https://github.com/llvm/llvm-project/pull/134043
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits