https://bugs.freedesktop.org/show_bug.cgi?id=99553
--- Comment #7 from Vedran Miletić vedran@miletic.net --- (In reply to darkbasic from comment #6)
Thanks, I would love to have at least Darktable working. With the CPU it takes 30+ seconds to process a single photo, compared to 0.5 seconds when using OpenCL.
If you are up for experimentation, the patches mentioned in comment #2 might be worth trying.