https://bugs.freedesktop.org/show_bug.cgi?id=75276
--- Comment #38 from t3st@sogetthis.com --- Looks like I stepped on similar issue at http://llvm.org/bugs/show_bug.cgi?id=20738 when dealing with OpenCL and rather filed bug against LLVM (not that like if they have right sections for AMD GPUs in theie bugzilla, but it seems to be LLVM issue, yeah?...).
Basically, running simple CL memory benchmark causes huge flood by error messages from LLVM and then GPU locks up, which is not fun at all, obviously.