[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 #13 from Eero Tamminen <eero.t.tamminen at intel.com> ---
PSBump8 case can be ignored.  While there are some scheduling differences,
there are no changes for send, nor change in instruction counts, and the perf
change is close to variance Additionally, perf of PSBump2, which is otherwise
same test but just has smaller loop count, went into other direction.

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