diff options
| author | Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> | 2017-07-14 17:06:34 -0300 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2017-08-11 13:59:52 +0000 |
| commit | 3cb41be817cadd2dd19a390cf5e21740cb801967 (patch) | |
| tree | a5327bfc077b2682a3c1b82ba7bcf66733563518 /src/encoding/binary | |
| parent | 92cfd07a6cfd917bcd3db41b15dbcd78d3f089af (diff) | |
| download | go-3cb41be817cadd2dd19a390cf5e21740cb801967.tar.xz | |
math/big: improve performance for AddMulVVW and mulAddVWW for ppc64x
This change adds a better implementation in asm for AddMulVVW and
mulAddVWW for ppc64x, with speedups up to 1.54x.
benchmark old ns/op new ns/op delta
BenchmarkAddMulVVW/1-8 6.58 6.29 -4.41%
BenchmarkAddMulVVW/2-8 7.43 7.25 -2.42%
BenchmarkAddMulVVW/3-8 8.95 8.15 -8.94%
BenchmarkAddMulVVW/4-8 10.1 9.37 -7.23%
BenchmarkAddMulVVW/5-8 12.0 10.7 -10.83%
BenchmarkAddMulVVW/10-8 22.1 20.1 -9.05%
BenchmarkAddMulVVW/100-8 211 154 -27.01%
BenchmarkAddMulVVW/1000-8 2046 1450 -29.13%
BenchmarkAddMulVVW/10000-8 20407 14793 -27.51%
BenchmarkAddMulVVW/100000-8 223857 145548 -34.98%
benchmark old MB/s new MB/s speedup
BenchmarkAddMulVVW/1-8 9719.88 10175.79 1.05x
BenchmarkAddMulVVW/2-8 17233.97 17657.54 1.02x
BenchmarkAddMulVVW/3-8 21446.05 23550.49 1.10x
BenchmarkAddMulVVW/4-8 25375.70 27334.33 1.08x
BenchmarkAddMulVVW/5-8 26650.52 30029.34 1.13x
BenchmarkAddMulVVW/10-8 28984.29 31833.68 1.10x
BenchmarkAddMulVVW/100-8 30249.41 41531.69 1.37x
BenchmarkAddMulVVW/1000-8 31273.35 44108.54 1.41x
BenchmarkAddMulVVW/10000-8 31360.47 43263.54 1.38x
BenchmarkAddMulVVW/100000-8 28589.58 43971.66 1.54x
Change-Id: I8a8105d4da3592afdef3125757a99f378a0254bb
Reviewed-on: https://go-review.googlesource.com/53931
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>
Diffstat (limited to 'src/encoding/binary')
0 files changed, 0 insertions, 0 deletions