(In reply to comment #1)
> Sorting processes by ram usage (on eg: top) would show no culprits; the
> memory was being leaked kernelside. Not even restarting X would fix the
> problem: A reboot was always necessary.

That would be a kernel bug then. But it's hard to imagine how that could only
be triggered without LLVM...

BTW, you can still enable LLVM via the environment variable R600_LLVM=1 or
R600_DEBUG=llvm.