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Carlos Eduardo Seo authored
This change implements mulWW as an intrinsic for ppc64x. Performance numbers below: name old time/op new time/op delta QuoRem 4.54µs ±45% 3.22µs ± 0% -29.22% (p=0.029 n=4+4) ModSqrt225_Tonelli 765µs ± 3% 757µs ± 0% -1.02% (p=0.029 n=4+4) ModSqrt225_3Mod4 231µs ± 0% 231µs ± 0% -0.10% (p=0.029 n=4+4) ModSqrt231_Tonelli 789µs ± 0% 788µs ± 0% -0.14% (p=0.029 n=4+4) ModSqrt231_5Mod8 267µs ± 0% 267µs ± 0% -0.13% (p=0.029 n=4+4) Sqrt 49.5µs ±17% 45.3µs ± 0% -8.48% (p=0.029 n=4+4) IntSqr/1 32.2ns ±22% 24.2ns ± 0% -24.79% (p=0.029 n=4+4) IntSqr/2 60.6ns ± 0% 60.9ns ± 0% +0.50% (p=0.029 n=4+4) IntSqr/3 82.8ns ± 0% 83.3ns ± 0% +0.51% (p=0.029 n=4+4) IntSqr/5 122ns ± 0% 121ns ± 0% -1.22% (p=0.029 n=4+4) IntSqr/8 227ns ± 0% 226ns ± 0% -0.44% (p=0.029 n=4+4) IntSqr/10 300ns ± 0% 298ns ± 0% -0.67% (p=0.029 n=4+4) IntSqr/20 1.02µs ± 0% 0.89µs ± 0% -13.08% (p=0.029 n=4+4) IntSqr/30 1.73µs ± 0% 1.51µs ± 0% -12.73% (p=0.029 n=4+4) IntSqr/50 3.69µs ± 1% 3.29µs ± 0% -10.70% (p=0.029 n=4+4) IntSqr/80 7.64µs ± 0% 7.04µs ± 0% -7.91% (p=0.029 n=4+4) IntSqr/100 11.1µs ± 0% 10.3µs ± 0% -7.04% (p=0.029 n=4+4) IntSqr/200 37.9µs ± 0% 36.4µs ± 0% -4.13% (p=0.029 n=4+4) IntSqr/300 69.4µs ± 0% 66.0µs ± 0% -4.94% (p=0.029 n=4+4) IntSqr/500 174µs ± 0% 168µs ± 0% -3.10% (p=0.029 n=4+4) IntSqr/800 347µs ± 0% 333µs ± 0% -4.06% (p=0.029 n=4+4) IntSqr/1000 524µs ± 0% 507µs ± 0% -3.21% (p=0.029 n=4+4) Change-Id: If067452f5b6579ad3a2e9daa76a7ffe6fceae1bb Reviewed-on: https://go-review.googlesource.com/c/143217 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Giovanni Bajo <rasky@develer.com>
1e8ecefc
