https://bugs.freedesktop.org/show_bug.cgi?id=99078

--- Comment #12 from Furkan falaca@gmail.com --- I'm experiencing a similar issue after updating to the same packages. I ran some tests last night, with Michel's suggestions on IRC. The problem goes away when I build Mesa against LLVM 3.8. So the bug was most likely introduced between with the LLVM update, going from 3.9.0 to 3.9.1rc3. Hopefully I'll get around to bisecting it to find the offending commit.