https://bugs.freedesktop.org/show_bug.cgi?id=103769
--- Comment #3 from bartos.petr@gmail.com --- For additional info, I've compiled latest mesa git with llvm 4.0 (stock version of Fedora 26) and Unity games are working. But I've no idea whether the problem is in llvm 6.0 itself, or how mesa is using newest llvm library.