Carlos Eduardo Seo 9459c03b29 math/big: improve performance for addVV/subVV for ppc64x ... This change adds a better asm implementation of addVV for ppc64x, with speedups up to nearly 3x in the best cases. benchmark old ns/op new ns/op delta BenchmarkAddVV/1-8 7.33 5.81 -20.74% BenchmarkAddVV/2-8 8.72 6.49 -25.57% BenchmarkAddVV/3-8 10.5 7.08 -32.57% BenchmarkAddVV/4-8 12.7 7.57 -40.39% BenchmarkAddVV/5-8 14.3 8.06 -43.64% BenchmarkAddVV/10-8 27.6 11.1 -59.78% BenchmarkAddVV/100-8 218 82.4 -62.20% BenchmarkAddVV/1000-8 2064 718 -65.21% BenchmarkAddVV/10000-8 20536 7153 -65.17% BenchmarkAddVV/100000-8 211004 72403 -65.69% benchmark old MB/s new MB/s speedup BenchmarkAddVV/1-8 8729.74 11006.26 1.26x BenchmarkAddVV/2-8 14683.65 19707.55 1.34x BenchmarkAddVV/3-8 18226.96 27103.63 1.49x BenchmarkAddVV/4-8 20204.50 33805.81 1.67x BenchmarkAddVV/5-8 22348.64 39694.06 1.78x BenchmarkAddVV/10-8 23212.74 57631.08 2.48x BenchmarkAddVV/100-8 29300.07 77629.53 2.65x BenchmarkAddVV/1000-8 31000.56 89094.54 2.87x BenchmarkAddVV/10000-8 31163.61 89469.16 2.87x BenchmarkAddVV/100000-8 30331.16 88393.73 2.91x It also adds the use of CTR for the loop counter in subVV, instead of manually updating the loop counter. This is slightly faster. Change-Id: Ic4b05cad384fd057972d46a5618ed5c3039d7460 Reviewed-on: https://go-review.googlesource.com/41010 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>		2017-04-25 13:15:39 +00:00
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big	math/big: improve performance for addVV/subVV for ppc64x	2017-04-25 13:15:39 +00:00
bits	math/bits: support negative rotation count and remove RotateRight	2017-04-11 23:57:24 +00:00
cmplx	math/cmplx: prevent infinite loop in tanSeries	2016-10-25 18:32:22 +00:00
rand	math/rand: export Source64, mainly for documentation value	2016-11-23 04:29:25 +00:00
abs.go
acosh.go
all_test.go	math: speed up and improve accuracy of Pow10	2017-02-22 19:17:04 +00:00
arith_s390x_test.go	math: use SIMD to accelerate some scalar math functions on s390x	2016-11-11 20:20:23 +00:00
arith_s390x.go	math: use SIMD to accelerate some scalar math functions on s390x	2016-11-11 20:20:23 +00:00
asin_386.s
asin_amd64.s
asin_amd64p32.s
asin_arm.s
asin.go
asinh.go
atan2_386.s
atan2_amd64.s
atan2_amd64p32.s
atan2_arm.s
atan2.go
atan_386.s
atan_amd64.s
atan_amd64p32.s
atan_arm.s
atan.go
atanh.go
bits.go
cbrt.go
const.go
copysign.go
cosh_s390x.s	cmd/asm, cmd/internal/obj/s390x, math: add LGDR and LDGR instructions	2017-04-17 16:33:51 +00:00
dim_386.s
dim_amd64.s
dim_amd64p32.s
dim_arm64.s
dim_arm.s
dim_s390x.s
dim.go
erf.go
exp2_386.s
exp2_amd64.s
exp2_amd64p32.s
exp2_arm.s
exp_386.s
exp_amd64.s	math: check overflow in amd64 Exp implementation	2017-02-10 13:40:08 +00:00
exp_amd64p32.s
exp_arm.s
exp.go
expm1_386.s
expm1_amd64.s
expm1_amd64p32.s
expm1_arm.s
expm1.go	math,math/cmplx: fix linter issues	2016-10-24 23:25:46 +00:00
export_s390x_test.go	math: use SIMD to accelerate some scalar math functions on s390x	2016-11-11 20:20:23 +00:00
export_test.go
floor_386.s
floor_amd64.s
floor_amd64p32.s
floor_arm64.s
floor_arm.s
floor_asm.go
floor_ppc64x.s
floor_s390x.s
floor.go
frexp_386.s
frexp_amd64.s
frexp_amd64p32.s
frexp_arm.s
frexp.go
gamma.go	math: speed up Gamma(+Inf)	2016-10-18 22:12:03 +00:00
hypot_386.s
hypot_amd64.s
hypot_amd64p32.s
hypot_arm.s
hypot.go
j0.go
j1.go
jn.go	math: fix typos in Bessel function docs	2017-02-16 22:41:34 +00:00
ldexp_386.s
ldexp_amd64.s
ldexp_amd64p32.s
ldexp_arm.s
ldexp.go
lgamma.go
log1p_386.s
log1p_amd64.s
log1p_amd64p32.s
log1p_arm.s
log1p.go	math,math/cmplx: fix linter issues	2016-10-24 23:25:46 +00:00
log10_386.s
log10_amd64.s
log10_amd64p32.s
log10_arm.s
log10_s390x.s	cmd/asm, cmd/internal/obj/s390x, math: add LGDR and LDGR instructions	2017-04-17 16:33:51 +00:00
log10.go
log_386.s
log_amd64.s	math: speed up Log on amd64	2017-03-29 20:36:29 +00:00
log_amd64p32.s
log_arm.s
log.go
logb.go
mod_386.s
mod_amd64.s
mod_amd64p32.s
mod_arm.s
mod.go
modf_386.s
modf_amd64.s
modf_amd64p32.s
modf_arm64.s	all: minor vet fixes	2016-10-24 17:27:37 +00:00
modf_arm.s
modf.go
nextafter.go
pow10.go	math: speed up and improve accuracy of Pow10	2017-02-22 19:17:04 +00:00
pow.go
remainder_386.s
remainder_amd64.s
remainder_amd64p32.s
remainder_arm.s
remainder.go
signbit.go
sin_386.s
sin_amd64.s
sin_amd64p32.s
sin_arm.s
sin_s390x.s	cmd/asm, cmd/internal/obj/s390x, math: add LGDR and LDGR instructions	2017-04-17 16:33:51 +00:00
sin.go	math,math/cmplx: fix linter issues	2016-10-24 23:25:46 +00:00
sincos_386.go	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
sincos_386.s
sincos.go	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
sinh_s390x.s	cmd/asm, cmd/internal/obj/s390x, math: add LGDR and LDGR instructions	2017-04-17 16:33:51 +00:00
sinh_stub.s	math: use SIMD to accelerate some scalar math functions on s390x	2016-11-11 20:20:23 +00:00
sinh.go	math: use SIMD to accelerate some scalar math functions on s390x	2016-11-11 20:20:23 +00:00
sqrt_386.s
sqrt_amd64.s
sqrt_amd64p32.s
sqrt_arm64.s
sqrt_arm.s
sqrt_mipsx.s	math, math/big: add support for GOARCH=mips{,le}	2016-11-03 22:55:06 +00:00
sqrt_ppc64x.s
sqrt_s390x.s
sqrt.go
stubs_arm64.s	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
stubs_mips64x.s	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
stubs_mipsx.s	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
stubs_ppc64x.s	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
stubs_s390x.s	math: remove asm version of sincos everywhere, except 386	2017-04-24 15:09:18 +00:00
tan_386.s
tan_amd64.s
tan_amd64p32.s
tan_arm.s
tan.go	math,math/cmplx: fix linter issues	2016-10-24 23:25:46 +00:00
tanh_s390x.s	cmd/asm, cmd/internal/obj/s390x, math: add LGDR and LDGR instructions	2017-04-17 16:33:51 +00:00
tanh.go	math: use SIMD to accelerate some scalar math functions on s390x	2016-11-11 20:20:23 +00:00
unsafe.go