[Bug 65193] New: [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65193

          Priority: medium
            Bug ID: 65193
          Assignee: dri-devel at lists.freedesktop.org
           Summary: [bisected] r600g, can't launch Gnome Shell and KDE
                    since mesa updated to
                    5de41575a127eb8a6a0fe5c71a73b372f9b89f53
          Severity: critical
    Classification: Unclassified
                OS: All
          Reporter: alexandre.f.demers at gmail.com
          Hardware: All
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

I haven't been able to log in Gnome Shell or KDE lately since I updated mesa
from git. Using XFCE and doing some tests, I've found out glxgears returns an
assertion error when launch. glxgears fails with the following error:
sb/sb_expr.cpp:455:fold_alu_op2: Assertion `v0 && v1 && n.dst[0]' failed.
line 6: 15521 Trace/breakpoint trap   (core dumped) $1

Bisecting ended up point to culprit commit:
commit 5de41575a127eb8a6a0fe5c71a73b372f9b89f53
Author: Vadim Girlin <vadimgirlin at gmail.com>
Date:   Mon May 27 14:23:47 2013 +0400

    r600g/sb: improve folding for SETcc

    Signed-off-by: Vadim Girlin <vadimgirlin at gmail.com>

:040000 040000 96a6fd8851d84f62896ecfba6c4a7df5a7963325
ade9a1e6d7fd56ed8cf413a2138c38011f1b9827 M    src


Using latest drm, ddx from git on a Radeon HD6950 Cayman.

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