(In reply to comment #75)
> > LLVM triggered Diagnostic Handler: unsupported call to function
> > llvm.AMDGPU.rsq. in main
> 
> You need to update your LLVM SVN/Git snapshot.

Just a quick update if someone else runs into this problem: llvm doesn't build
with gcc 4.7 or 4.9, but it works with gcc 4.8.3.

Other than that I didn't get different results from the newest git code (mesa,
xf86-video-ati) on a patched kernel 3.16-rc2 - egltri_screen works once,
eglgears_screen produces garbage. But it seems somewhat more stable (no
unrecoverable crashes as far as I can remember). Xorg on the other hand seems
worse (no output anymore), but that might be the new in-server glamor stuff, I
guess.

I won't be able to continue investigations for a few days - the printks are
still on my todo list (or maybe gdb ...).