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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>
          <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;">Status</td>
           <td>NEEDINFO
           </td>
           <td>NEW
           </td>
         </tr></table>
      <p>
        <div>
            <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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