[Mesa-stable] nominate e933246013eef376804662f3fcf4646c143c6c88

[Andreas Boll]

Hi,

please cherry-pick the following commit:

commit e933246013eef376804662f3fcf4646c143c6c88
Author: Heiko Przybyl <lil_tux at web.de>
Date:   Sun Nov 20 14:42:28 2016 +0100

    r600/sb: Fix loop optimization related hangs on eg

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94900