[Bug 80211] New: [ILK/SNB Bisected]Piglit shaders_glsl-fs-copy-propagation-texcoords-1 fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80211

          Priority: high
            Bug ID: 80211
                CC: idr at freedesktop.org
          Assignee: mattst88 at gmail.com
           Summary: [ILK/SNB Bisected]Piglit
                    shaders_glsl-fs-copy-propagation-texcoords-1 fails
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/i965
           Product: Mesa

System Environment:
--------------------------
Platform:  Ironlake
Libdrm:       
(master)libdrm-2.4.54-9-g8fc62ca8ac010659023bb63c4759eb683de4f9af
Mesa:        (master)88b887faa9209a58d29c819e01f9ad37ebc99a36
Xserver:   
(master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a
Xf86_video_intel:(master)2.99.912-77-gd49f53cc00258e3b1e1a898c02e219b336716002
Libva:        (master)ce3315accf067115fbe22a13bf8689bab01da778
Libva_intel_driver:(master)745340dd013399f64507de73401ab3adb712dad5
Kernel:    (drm-intel-nightly)fff6c5111af7356d3815521f597959554e7bc1cc

Bug detailed description:
-----------------------------
It fails on Ironlake and Sandybridge with mesa master branch, It works well on
10.2 branch.
Following cases also fail with same bisect commit:
shaders_glsl-fs-texture2d-dependent-1
shaders_glsl-fs-texture2d-dependent-2
shaders_glsl-fs-texture2d-masked-4
shaders_glsl-kwin-blur-1
shaders_glsl-kwin-blur-2
spec_ARB_fragment_program_fp-indirections2

Bisect shows: 35bc02dee8402bf9090b3e21efe2832828919b4f is the first bad commit
commit 35bc02dee8402bf9090b3e21efe2832828919b4f
Author:     Matt Turner <mattst88 at gmail.com>
AuthorDate: Fri Apr 11 12:26:25 2014 -0700
Commit:     Matt Turner <mattst88 at gmail.com>
CommitDate: Tue Jun 17 09:40:31 2014 -0700

    i965/fs: Perform CSE on texture operations.

    Helps Unigine Tropics and some (old) gstreamer shaders in shader-db.

    instructions in affected programs:     792 -> 744 (-6.06%)

    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

output:
Probe color at (249,0)
  Expected: 1.000000 1.000000 0.000000
  Observed: 0.000000 1.000000 0.000000
Probe color at (0,249)
  Expected: 1.000000 0.000000 1.000000
  Observed: 0.000000 0.000000 1.000000
PIGLIT: {'result': 'fail' }

Reproduce steps:
----------------------------
1. xinit
2. bin/shader_runner
tests/shaders/glsl-fs-copy-propagation-texcoords-1.shader_test -auto

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