System Environment:
--------------------------
Arch:           i386
Platform:       huronriver
Libdrm:         (master)2.4.27-3-g37ccce5e390a9d757474920f488cafa1cf89854a
Mesa:           (master)2134d2f35baadf4117e48aa3315608403622b79a
Xserver:
(master)xorg-server-1.11.99.1-43-gb2015a2c01711646bb7ae23d684abee0cd55d4d0
Xf86_video_intel:  (master)2.17.0-41-gd8f2e87473eae81e07922271b5f608fdceb4ae5e
Kernel:  (drm-intel-next)9a10f401a401ca69c6537641c8fc0d6b57b5aee8

Bug detailed description:
------------------------- 
Piglit asmparsertest/ARBvp1.0/attrib-03.txt and asmparsertest/ARBvp1.0/attrib-04.txt fail on ironlake and sandybridge.  
Bisect shows 762c9766c93697af8d7fbaa729aed118789dbe8e is the first bad commit.
commit 762c9766c93697af8d7fbaa729aed118789dbe8e
Author:     Mathias Fröhlich <Mathias.Froehlich@web.de>
AuthorDate: Mon Oct 31 22:23:51 2011 +0100
Commit:     Mathias Fröhlich <Mathias.Froehlich@web.de>
CommitDate: Tue Nov 29 06:37:19 2011 +0100

    mesa: Use VERT_ATTRIB_* indexed array in gl_array_object.

    Replace the distinct struct gl_client_array members in gl_array_object by
    an array of gl_client_arrays indexed by VERT_ATTRIB_*.
    Renumber the vertex attributes slightly to keep the old semantics of the
    distinct array members. Make use of the upper 32 bits in VERT_BIT_*.
    Update all occurances of the distinct struct members with the array
    equivalents.

    Signed-off-by: Mathias Froehlich <Mathias.Froehlich@web.de>
    Reviewed-by: Eric Anholt <eric@anholt.net>


Reproduce steps:
----------------
1. start X
2. ./asmparsertest -auto ARBvp1.0 tests/asmparsertest/shaders/ARBvp1.0/attrib-03.txt