commit | 4d10aba35eebe9cb4a0b6627815dc1fbddc97100 | [log] [tgz] |
---|---|---|
author | Josh Bleecher Snyder <josharian@gmail.com> | Sun Mar 03 14:48:50 2019 -0800 |
committer | Josh Bleecher Snyder <josharian@gmail.com> | Sat Mar 09 20:34:40 2019 +0000 |
tree | d9ed2e861c06457528074fb1348ea09b4560f723 | |
parent | fe24837c4de6dac36f3496e6bac85f72209ee841 [diff] |
math/big: add fast path for amd64 addVW for large z This matches the pure Go fast path added in the previous commit. I will leave other architectures to those with ready access to hardware. name old time/op new time/op delta AddVW/1-8 3.60ns ± 3% 3.59ns ± 1% ~ (p=0.147 n=91+86) AddVW/2-8 3.92ns ± 1% 3.91ns ± 2% -0.36% (p=0.000 n=86+92) AddVW/3-8 4.33ns ± 5% 4.46ns ± 5% +2.94% (p=0.000 n=96+97) AddVW/4-8 4.76ns ± 5% 4.82ns ± 5% +1.28% (p=0.000 n=95+92) AddVW/5-8 5.40ns ± 1% 5.42ns ± 0% +0.47% (p=0.000 n=76+71) AddVW/10-8 8.03ns ± 1% 7.80ns ± 5% -2.90% (p=0.000 n=73+96) AddVW/100-8 43.8ns ± 5% 17.9ns ± 1% -59.12% (p=0.000 n=94+81) AddVW/1000-8 428ns ± 4% 85ns ± 6% -80.20% (p=0.000 n=96+99) AddVW/10000-8 4.22µs ± 2% 1.80µs ± 3% -57.32% (p=0.000 n=69+92) AddVW/100000-8 44.8µs ± 8% 31.5µs ± 3% -29.76% (p=0.000 n=99+90) name old time/op new time/op delta SubVW/1-8 3.53ns ± 2% 3.63ns ± 5% +2.97% (p=0.000 n=94+93) SubVW/2-8 4.33ns ± 5% 4.01ns ± 2% -7.36% (p=0.000 n=90+85) SubVW/3-8 4.32ns ± 2% 4.32ns ± 5% ~ (p=0.084 n=87+97) SubVW/4-8 4.70ns ± 2% 4.83ns ± 6% +2.77% (p=0.000 n=85+96) SubVW/5-8 5.84ns ± 1% 5.35ns ± 1% -8.35% (p=0.000 n=87+87) SubVW/10-8 8.01ns ± 4% 7.54ns ± 4% -5.84% (p=0.000 n=98+97) SubVW/100-8 43.9ns ± 5% 17.9ns ± 1% -59.20% (p=0.000 n=98+76) SubVW/1000-8 426ns ± 2% 85ns ± 3% -80.13% (p=0.000 n=90+98) SubVW/10000-8 4.24µs ± 2% 1.81µs ± 3% -57.28% (p=0.000 n=74+91) SubVW/100000-8 44.5µs ± 4% 31.5µs ± 2% -29.33% (p=0.000 n=84+91) Change-Id: I10dd361cbaca22197c27e7734c0f50065292afbb Reviewed-on: https://go-review.googlesource.com/c/go/+/164969 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Official binary distributions are available at https://golang.org/dl/.
After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.
If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.
Go is the work of thousands of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.