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<body><span class="vcard"><a class="email" href="mailto:hengx.ding@intel.com" title="Ding Heng <hengx.ding@intel.com>"> <span class="fn">Ding Heng</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Bisected] OglDrvShComp_6 performance decreased by 10-20%."
href="https://bugs.freedesktop.org/show_bug.cgi?id=90113">bug 90113</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>NEW
</td>
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Bisected] OglDrvShComp_6 performance decreased by 10-20%."
href="https://bugs.freedesktop.org/show_bug.cgi?id=90113#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Bisected] OglDrvShComp_6 performance decreased by 10-20%."
href="https://bugs.freedesktop.org/show_bug.cgi?id=90113">bug 90113</a>
from <span class="vcard"><a class="email" href="mailto:hengx.ding@intel.com" title="Ding Heng <hengx.ding@intel.com>"> <span class="fn">Ding Heng</span></a>
</span></b>
<pre>(In reply to Eero Tamminen from <a href="show_bug.cgi?id=90113#c2">comment #2</a>)
<span class="quote">> Heng, is the given 10-20% shader compiler slowdown only from "i965: Don't
> set NirOptions for stages that will use the vec4 backend" commit, or total
> speed difference for larger set of changes?</span >
Sorry for incorrect bisect result:
d47405eb707b9921f70454049677a9d504ee3fa6 is the first bad commit
commit d47405eb707b9921f70454049677a9d504ee3fa6
Author: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>>
Date: Fri Apr 10 16:24:11 2015 -0700
i965: Use NIR by default for fragment shaders
GLSL IR vs. NIR shader-db results on i965:
total instructions in shared programs: 2889747 -> 2890782 (0.04%)
instructions in affected programs: 2425446 -> 2426481 (0.04%)
helped: 3698
HURT: 5341
GLSL IR vs. NIR shader-db results on g4x:
total instructions in shared programs: 2547252 -> 2550440 (0.13%)
instructions in affected programs: 1984482 -> 1987670 (0.16%)
helped: 2844
HURT: 4776
GLSL IR vs. NIR shader-db results on Iron Lake:
total instructions in shared programs: 4053381 -> 4063828 (0.26%)
instructions in affected programs: 3026601 -> 3037048 (0.35%)
helped: 4110
HURT: 8331
GAINED: 1287
LOST: 9
GLSL IR vs. NIR shader-db results on Sandy Bridge:
total instructions in shared programs: 5307041 -> 5236666 (-1.33%)
instructions in affected programs: 3442908 -> 3372533 (-2.04%)
helped: 11829
HURT: 5604
GAINED: 33
LOST: 18
GLSL IR vs. NIR shader-db results on Ivy Bridge:
total instructions in shared programs: 4926333 -> 4857017 (-1.41%)
instructions in affected programs: 3144042 -> 3074726 (-2.20%)
helped: 11559
HURT: 4774
GAINED: 46
LOST: 25
GLSL IR vs. NIR shader-db results on Bay Trail:
total instructions in shared programs: 4926333 -> 4857017 (-1.41%)
instructions in affected programs: 3144042 -> 3074726 (-2.20%)
helped: 11559
HURT: 4774
GAINED: 46
LOST: 25
GLSL IR vs. NIR shader-db results on Haswell:
total instructions in shared programs: 4392487 -> 4293476 (-2.25%)
instructions in affected programs: 2800180 -> 2701169 (-3.54%)
helped: 13073
HURT: 3383
GAINED: 46
LOST: 23
GLSL IR vs. NIR shader-db results on Broadwell (FS only):
total instructions in shared programs: 4378113 -> 4283025 (-2.17%)
instructions in affected programs: 2743209 -> 2648121 (-3.47%)
helped: 12470
HURT: 3609
GAINED: 64
LOST: 27
Signed-off-by: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>>
Acked-by: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
Acked-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
:040000 040000 056467d1b76d9b6d84041be3994abf5acc976caf
450c58fbecf671fef84ed91ca5999432e024a19d M src</pre>
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