pan/bi: Don't set has_fsub
All this option controls is fusing fadd(x, fneg(y)) into a single instruction, but our modifier propagation can already do that without the special cases.
shader-db changes are mostly noise.
total instructions in shared programs: 2698039 -> 2697812 (<.01%)
instructions in affected programs: 156742 -> 156515 (-0.14%)
helped: 280
HURT: 109
helped stats (abs) min: 1.0 max: 12.0 x̄: 1.69 x̃: 1
helped stats (rel) min: 0.08% max: 10.71% x̄: 0.65% x̃: 0.32%
HURT stats (abs) min: 1.0 max: 8.0 x̄: 2.26 x̃: 2
HURT stats (rel) min: 0.15% max: 5.77% x̄: 2.08% x̃: 2.22%
95% mean confidence interval for instructions value: -0.80 -0.36
95% mean confidence interval for instructions %-change: -0.05% 0.28%
Inconclusive result (%-change mean confidence interval includes 0).
total cycles in shared programs: 143679.94 -> 143676.33 (<.01%)
cycles in affected programs: 617.98 -> 614.38 (-0.58%)
helped: 148
HURT: 3
helped stats (abs) min: 0.015625 max: 0.1875 x̄: 0.02 x̃: 0
helped stats (rel) min: 0.17% max: 3.33% x̄: 0.71% x̃: 0.57%
HURT stats (abs) min: 0.015625 max: 0.046875 x̄: 0.03 x̃: 0
HURT stats (rel) min: 0.66% max: 2.27% x̄: 1.46% x̃: 1.45%
95% mean confidence interval for cycles value: -0.03 -0.02
95% mean confidence interval for cycles %-change: -0.77% -0.56%
Cycles are helped.
total fma in shared programs: 22102.44 -> 22098.33 (-0.02%)
fma in affected programs: 395.98 -> 391.88 (-1.04%)
helped: 123
HURT: 3
helped stats (abs) min: 0.015625 max: 0.1875 x̄: 0.03 x̃: 0
helped stats (rel) min: 0.43% max: 18.75% x̄: 1.81% x̃: 0.89%
HURT stats (abs) min: 0.015625 max: 0.046875 x̄: 0.03 x̃: 0
HURT stats (rel) min: 0.66% max: 4.17% x̄: 2.09% x̃: 1.45%
95% mean confidence interval for fma value: -0.04 -0.03
95% mean confidence interval for fma %-change: -2.17% -1.27%
Fma are helped.
total cvt in shared programs: 14735.23 -> 14735.80 (<.01%)
cvt in affected programs: 969.64 -> 970.20 (0.06%)
helped: 179
HURT: 121
helped stats (abs) min: 0.015625 max: 0.09375 x̄: 0.02 x̃: 0
helped stats (rel) min: 0.17% max: 46.15% x̄: 1.13% x̃: 0.31%
HURT stats (abs) min: 0.015625 max: 0.125 x̄: 0.03 x̃: 0
HURT stats (rel) min: 0.42% max: 28.57% x̄: 6.62% x̃: 6.25%
95% mean confidence interval for cvt value: -0.00 0.01
95% mean confidence interval for cvt %-change: 1.32% 2.68%
Inconclusive result (value mean confidence interval includes 0).
total quadwords in shared programs: 1460952 -> 1460680 (-0.02%)
quadwords in affected programs: 10216 -> 9944 (-2.66%)
helped: 39
HURT: 5
helped stats (abs) min: 8.0 max: 8.0 x̄: 8.00 x̃: 8
helped stats (rel) min: 0.97% max: 11.11% x̄: 4.53% x̃: 3.45%
HURT stats (abs) min: 8.0 max: 8.0 x̄: 8.00 x̃: 8
HURT stats (rel) min: 12.50% max: 25.00% x̄: 15.71% x̃: 14.29%
95% mean confidence interval for quadwords value: -7.74 -4.62
95% mean confidence interval for quadwords %-change: -4.43% -0.04%
Quadwords are helped.
total threads in shared programs: 53538 -> 53537 (<.01%)
threads in affected programs: 2 -> 1 (-50.00%)
helped: 0
HURT: 1