https://bugs.freedesktop.org/show_bug.cgi?id=88263
--- Comment #3 from oleid@mescharet.de --- Hey Marek!
Thanks for having a look into this!
As far as I can tell, the bug occurs without the LLVM backend. I just realized, that you have to set the environment variable "R600_LLVM", which I didn't. Instead, I tried to activate the LLVM backend by adding the string "llvm" to R600_DEBUG (yet, not in the run which created the traces). Furthermore, R600_LLVM is not set by default on ArchLinux. So actually, I never tried the LLVM backend.
If you'd like to have a trace using the LLVM backend, please let me know.