Comment # 3 on bug 94037 from Ilia Mirkin

(In reply to peter.fiss from comment #2)
> Thanks for the quick answer. I'm going to try mesa-git on my Manjaro
> machine, but it looks like it will take a while until llvm-svn and mesa-git
> are compiled and installed.

You should be fine with your system llvm (or no llvm at all, unless you're
using radeonsi or are testing llvmpipe).