[Bug 90113] [HSW Bisected] OglDrvShComp_6 performance decreased by 10-20%.
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Jun 3 02:02:22 PDT 2015
https://bugs.freedesktop.org/show_bug.cgi?id=90113
Ding Heng <hengx.ding at intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
--- Comment #3 from Ding Heng <hengx.ding at intel.com> ---
(In reply to Eero Tamminen from comment #2)
> 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?
Sorry for incorrect bisect result:
d47405eb707b9921f70454049677a9d504ee3fa6 is the first bad commit
commit d47405eb707b9921f70454049677a9d504ee3fa6
Author: Jason Ekstrand <jason.ekstrand at intel.com>
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 <jason.ekstrand at intel.com>
Acked-by: Matt Turner <mattst88 at gmail.com>
Acked-by: Kenneth Graunke <kenneth at whitecape.org>
:040000 040000 056467d1b76d9b6d84041be3994abf5acc976caf
450c58fbecf671fef84ed91ca5999432e024a19d M src
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