https://bugs.freedesktop.org/show_bug.cgi?id=74294
--- Comment #4 from Michel Dänzer michel@daenzer.net --- radeonsi doesn't work without LLVM, so R600_LLVM=1 doesn't have any effect with it. OTOH I'd expect it to be affected by any issues like this affecting r600g with R600_LLVM=1.