https://bugs.freedesktop.org/show_bug.cgi?id=73110
--- Comment #5 from Alexandre Demers alexandre.f.demers@gmail.com --- (In reply to comment #3)
I suspect the llvm support for r600 class hardware needs to add support for some additional instructions, etc. that that patch uses. Vincent or Tom may be able to identify what's missing.
I'm still using LLVM 3.3. I'll try with LLVM 3.4 later if possible just in case it works with that, since LLVM 3.4 has landed in the testing repositories of ArchLinux last night.