[Bug 84444] [BDW Bisected]Smokin-Guns v1.1 and urbanterror v4.1 performance reduced ~15%

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84444

--- Comment #16 from Eero Tamminen <eero.t.tamminen at intel.com> ---
According to your data, there were couple of cases where performance improved
up to 10-30% (smoking guns, urban terror, TF2, zbuffer), with the attached test
patch.

However, (as expected), it reduced performance in many more tests and the
difference was *much* larger, up to >70% percent (in GLB fill test and sampler
bound pixel shader test).

Based on your data, this bug should be closed as WONTFIX.

(ZBuffer being better with single span is a bit worrying, as its performance
isn't currently quite what it should be.)

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