The point is that no existing libc is part of the LLVM project; i.e., under that umbrella. What's different about Google wanting their own libc and following what Clang and musl do currently?
The question I have is, is there a legitimate reason for tight integration between a compiler and libc? Perhaps there are very good reasons for them to be designed together. A lot of compilers to this for other languages because it allows them to have special logic around intrinsics for example.
