[clang] [compiler-rt] [lld] [llvm] [Coverage][WebAssembly] Add initial support for WebAssembly/WASI (PR #111332)

[Zequan Wu via cfe-commits]

ZequanWu wrote:

Given there's already an implementation of `flock` in `compiler-rt/lib/profile/WindowsMMap.c`. Setting `COMPILER_RT_TARGET_HAS_FLOCK` according to this https://github.com/llvm/llvm-project/blob/7dc2542ac24fcae89dfd179fa58c4ec4fb959e2b/compiler-rt/lib/profile/CMakeLists.txt#L41-L50  doesn't look right to me.

https://github.com/llvm/llvm-project/pull/111332