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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [HSW, bisected][GLES 31 CTS][Regression] ES31-CTS.gtf.GL31Tests.shader_helper.shader_helper - segfault/assert"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=92940">92940</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[HSW, bisected][GLES 31 CTS][Regression] ES31-CTS.gtf.GL31Tests.shader_helper.shader_helper - segfault/assert
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>11.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/DRI/i965
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>idr@freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>marta.lofstedt@intel.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Software versions:
    4.3.0-rc3
    OpenGL version string: 3.0 Mesa 11.1.0-devel (git-a29d922)

GPU hardware:
    OpenGL renderer string: Mesa DRI Intel(R) Haswell Desktop 
    00:02.0 VGA compatible controller [0300]: Intel Corporation Xeon E3-1200
v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06)

CPU hardware:
    x86_64
    Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
Khronos CTS version:
git@29e4891ef6

command:
./glcts --deqp-case=ES31-CTS.gtf.GL31Tests.shader_helper.shader_helper

Environment:
Mesa built with: --enable-debug
export MESA_GLES_VERSION_OVERRIDE=3.1
export MESA_EXTENSION_OVERRIDE=GL_ARB_compute_shader
-----------------------------------------------------

With debug build the ES31-CTS.gtf.GL31Tests.shader_helper.shader_helper asserts
with:
glcts: nir/nir.c:1569: nir_intrinsic_from_system_value: Assertion `!"system
value does not directly correspond to intrinsic"' failed.
Aborted (core dumped)
On a build without debug the test segfaults. 
This issue is blocking OpenGL ES 3.1 conformance testing.

The regression was bisected to the following commit:

commit 20748318c5b870fc27f699637041e67a67321f5f
Author: Ilia Mirkin <<a href="mailto:imirkin@alum.mit.edu">imirkin@alum.mit.edu</a>>
Date:   Mon Sep 14 16:13:43 2015 -0400

    glsl: add gl_HelperInvocation system value

    Signed-off-by: Ilia Mirkin <<a href="mailto:imirkin@alum.mit.edu">imirkin@alum.mit.edu</a>>
    Reviewed-by: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>></pre>
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