https://bugs.freedesktop.org/show_bug.cgi?id=93649
--- Comment #30 from AmarildoJr amarildosjr@riseup.net --- (In reply to Vedran Miletić from comment #28)
Is the elephant in the room in this case the LLVM version difference between the two setups?
According to a Gentoo user who compiled llvm 3.5 and and older version of mesa against it, the problem still occurs.