[compiler-rt] [Darwin][CompilerRT] Set compiler ID to 'Clang' for Compiler RT Tests for Apple Clang (PR #121858)

[Saleem Abdulrasool via llvm-commits]

https://github.com/compnerd approved this pull request.

That is rather annoying. I wonder how difficult it would be to accommodate that in the test suite instead of working around that in the build system.

https://github.com/llvm/llvm-project/pull/121858