[Bug 90895] [IVB/HSW/BSW Bisected] GLB2.7 Egypt, GfxBench3.0 T-Rex & ALU and many SynMark cases performance reduced by 10-23%

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90895

--- Comment #8 from ye.tian <yex.tian at intel.com> ---
(In reply to Matt Turner from comment #7)
> Created attachment 116405 [details] [review]
> p.patch
> 
> Try this?
> 
> Just adds unlikely() around brw->perf_debug in perf_debug()

It still low fps.

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