https://bugs.freedesktop.org/show_bug.cgi?id=89034
--- Comment #34 from Michel Dänzer michel@daenzer.net --- (In reply to smoki from comment #33)
glsl-fs-min is one of the random failing tests actually, it sometimes pass sometimes fail with or without subreg liveness, so that is not problem here i think.
I can't reproduce random failures with glsl-fs-min nor any piglit regressions with sub-register liveness enabled, but sub-register liveness doesn't seem to result in any code difference for glsl-fs-min anyway.
Can you find another test which consistently passes without sub-register liveness and fails with it *and* shows a difference between them in the R600_DEBUG=vs,ps stderr output, and attach the latter for both cases?