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<body><span class="vcard"><a class="email" href="mailto:mark.a.janes@intel.com" title="Mark Janes <mark.a.janes@intel.com>"> <span class="fn">Mark Janes</span></a>
</span> changed
<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - WebGL2 shader crashes i965_dri.so 17.3.3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105271">bug 105271</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>jason@jlekstrand.net, mark.a.janes@intel.com
</td>
</tr>
<tr>
<td style="text-align:right;">Assignee</td>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
<td>t_arceri@yahoo.com.au
</td>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>ASSIGNED
</td>
</tr>
<tr>
<td style="text-align:right;">Blocks</td>
<td>
</td>
<td>104757
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<tr>
<td style="text-align:right;">Keywords</td>
<td>
</td>
<td>bisected, regression
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - WebGL2 shader crashes i965_dri.so 17.3.3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105271#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - WebGL2 shader crashes i965_dri.so 17.3.3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105271">bug 105271</a>
from <span class="vcard"><a class="email" href="mailto:mark.a.janes@intel.com" title="Mark Janes <mark.a.janes@intel.com>"> <span class="fn">Mark Janes</span></a>
</span></b>
<pre>bisected to:
40e9f2f13847ddd94e1216088aa00456d7b02d2b is the first bad commit
commit 40e9f2f13847ddd94e1216088aa00456d7b02d2b
Author: Timothy Arceri <<a href="mailto:timothy.arceri@collabora.com">timothy.arceri@collabora.com</a>>
Date: Tue Dec 13 11:37:25 2016 +1100
i965: disable loop unrolling in GLSL IR
There is a single regression in loop unrolling which is:
loops HURT: shaders/orbital_explorer.shader_test GS SIMD8: 0 -> 1
However the loop is huge so it seems reasonable not to unroll it. It's
surprising that GLSL IR does unroll it.
shader-db results BDW:
total instructions in shared programs: 13037455 -> 13036947 (-0.00%)
instructions in affected programs: 17982 -> 17474 (-2.83%)
helped: 63
HURT: 25
total cycles in shared programs: 262217870 -> 262227990 (0.00%)
cycles in affected programs: 2287046 -> 2297166 (0.44%)
helped: 969
HURT: 844
total loops in shared programs: 2951 -> 2952 (0.03%)
loops in affected programs: 0 -> 1
helped: 0
HURT: 1
LOST: 0
GAINED: 1
Reviewed-by: Jason Ekstrand <<a href="mailto:jason@jlekstrand.net">jason@jlekstrand.net</a>></pre>
</div>
</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - [TRACKER] Mesa 18.0 release tracker"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104757">Bug 104757</a>] [TRACKER] Mesa 18.0 release tracker
</li>
</ul>
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