Zig has an llvm6 branch with all tests passing. It's planned to release Zig 0.2.0 directly after LLVM 6.0.0 is released.
Sorry for the slow reply; back from vacation now.
Alphabetical order would be preferred, but I can fix that afterwards if you like.
(Go ahead and commit directly to the branch, of let me know if you'd like me to do it.)