[Bug 99221] >2% perf drop in GfxBench T-Rex with "i965: disable loop unrolling in GLSL IR"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99221

--- Comment #18 from Timothy Arceri <t_arceri at yahoo.com.au> ---
(In reply to Eero Tamminen from comment #17)
> The commit fixes PSPom perf on all platforms where I have data (on GEN6 &
> GEN7 there was no clear drop on it, nor now increase, changes affected just
> GEN8 & GEN9).
> 
> What you propose should be done about T-Rex & PSPhong:
> * Close this bug now, as the clear regression was fixed, or
> * Keep this bug open until Curro's scheduling rework lands, and/or somebody
> adds register bank conflict handling to Mesa
> ?
> 

It's up to you. I won't be looking into this further since the real regression
is fixed and the other dips in performance are just due to things shuffling
around due to the different order in which we are calling things.

If you want to wait for the scheduling rework to test again I'm happy for you
to leave the bug open.

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