Ian Romanick
ccefce46cb
I was pretty liberal with these assertions when I wrote this code because I had assumed that GCC would unroll the loops, inline the look ups of static const arrays with now constant indices, and then elmininate all the actuall assertions. It seems none of this happens even at -O3. Adding the pragmas helps encourage loop unrolling at some optimization levels. I tested by running shader-db with NIR_VALIDATE=false on a Core i7 Haswell desktop system. -Og: No difference proven at 95.0% confidence. N=5 -O1: -48.304 +/- 1.221 (-16.3343% +/- 0.412888%) N=5 -O2: -49.94 +/- 1.23521 (-17.9634% +/- 0.444303%) N=5 v2: Add a _Pragma to an inner loop that was accidentally dropped during a rebase. Reviewed-by: Eric Anholt <eric@anholt.net>
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