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Jason Ekstrand authored
On gen11, the removed the PLN instruction so we have to emit a pile of MAD to emulate it. We may as well do that in NIR so we can optimize and later schedule it. Shader-db results on Ice Lake: total instructions in shared programs: 17145644 -> 16556440 (-3.44%) instructions in affected programs: 11507454 -> 10918250 (-5.12%) helped: 35763 HURT: 42085 helped stats (abs) min: 1 max: 140 x̄: 19.09 x̃: 18 helped stats (rel) min: 0.04% max: 37.93% x̄: 15.40% x̃: 14.49% HURT stats (abs) min: 1 max: 248 x̄: 2.22 x̃: 2 HURT stats (rel) min: 0.05% max: 50.00% x̄: 5.00% x̃: 2.47% 95% mean confidence interval for instructions value: -7.67 -7.47 95% mean confidence interval for instructions %-change: -4.46% -4.29% Instructions are helped. total loops in shared programs: 4370 -> 4370 (0.00%) loops in affected programs: 0 -> 0 helped: 0 HURT: 0 total cycles in shared programs: 360624645 -> 368220857 (2.11%) cycles in affected programs: 269631244 -> 277227456 (2.82%) helped: 15583 HURT: 65874 helped stats (abs) min: 1 max: 28561 x̄: 78.45 x̃: 32 helped stats (rel) min: <.01% max: 67.81% x̄: 5.38% x̃: 2.44% HURT stats (abs) min: 1 max: 238638 x̄: 133.87 x̃: 20 HURT stats (rel) min: <.01% max: 306.25% x̄: 5.81% x̃: 3.97% 95% mean confidence interval for cycles value: 67.42 119.09 95% mean confidence interval for cycles %-change: 3.61% 3.73% Cycles are HURT. total spills in shared programs: 8943 -> 8981 (0.42%) spills in affected programs: 1925 -> 1963 (1.97%) helped: 44 HURT: 14 total fills in shared programs: 21815 -> 21925 (0.50%) fills in affected programs: 3511 -> 3621 (3.13%) helped: 41 HURT: 18 LOST: 70 GAINED: 14 Reviewed-by: Matt Turner <mattst88@gmail.com>
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