Comment # 7 on bug 106631 from Jan Vesely

It looks like even 100s is not enough. Can you try running with no time limit?
(set to 0).
Looking at the numbers I think mesa's results are inflated by the kernel
getting killed before finishing the computation.
Looking at the numbers it can take significantly longer.

Did you by any chance build llvm in debug mode? that can inflate kernel compile
times significantly.