On Tue, Dec 15, 2015 at 1:16 AM, Eduardo Lima Mitev <el...@igalia.com> wrote: > On 12/15/2015 09:28 AM, Kristian Høgsberg Kristensen wrote: >> This optimizes a + b - b to just a. Modest shader-db results (BDW): >> >> total instructions in shared programs: 7842452 -> 7841862 (-0.01%) >> instructions in affected programs: 61938 -> 61348 (-0.95%) >> total loops in shared programs: 2131 -> 2131 (0.00%) >> helped: 263 >> HURT: 0 >> GAINED: 0 >> LOST: 0 >> > > In HSW, I get these shader-db results: > > total instructions in shared programs: 6257265 -> 6256788 (-0.01%) > instructions in affected programs: 46601 -> 46124 (-1.02%) > helped: 218 > HURT: 0 > > total cycles in shared programs: 56010026 -> 56007760 (-0.00%) > cycles in affected programs: 1048392 -> 1046126 (-0.22%) > helped: 199 > HURT: 154 > > total loops in shared programs: 1979 -> 1979 (0.00%) > loops in affected programs: 0 -> 0 > helped: 0 > HURT: 0 > > LOST: 0 > GAINED: 0 > > > I wonder where those cycle HURTs come from. In any case, the net result > is positive.
I haven't confirmed, but I've seen cases that seem like the cycle counts are wrong. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
