[clang] [clang][mlibc] Predefine `__mlibc__` for mlibc targets (PR #225654)

[via cfe-commits]

https://github.com/lzcunt converted_to_draft 
https://github.com/llvm/llvm-project/pull/225654
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits