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The Go programming language
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23f7554194
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Carlos Eduardo Seo 23f7554194 internal/bytealg: improve performance of IndexByte for ppc64x 
Use addi+lvx instruction fusion and remove register dependencies in
the main loop to improve performance.

benchmark                      old ns/op     new ns/op     delta
BenchmarkIndexByte/10-192      9.86          9.75          -1.12%
BenchmarkIndexByte/32-192      15.6          11.2          -28.21%
BenchmarkIndexByte/4K-192      155           97.6          -37.03%
BenchmarkIndexByte/4M-192      171790        129650        -24.53%
BenchmarkIndexByte/64M-192     6530982       5018424       -23.16%

benchmark                      old MB/s     new MB/s     speedup
BenchmarkIndexByte/10-192      1013.72      1025.76      1.01x
BenchmarkIndexByte/32-192      2049.47      2868.01      1.40x
BenchmarkIndexByte/4K-192      26422.69     41975.67     1.59x
BenchmarkIndexByte/4M-192      24415.17     32350.74     1.33x
BenchmarkIndexByte/64M-192     10275.46     13372.50     1.30x

Change-Id: Iedf17f01f374d58e85dcd6a972209bfcb7eb6063
Reviewed-on: https://go-review.googlesource.com/137415
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>
2018-09-25 20:25:25 +00:00
.github .github: use HTTPS for Stack Overflow link in SUPPORT.md 2018-06-12 11:08:14 +00:00
api os: add ModeCharDevice to ModeType 2018-09-13 09:52:57 +00:00
doc doc/faq: fix link to 2018 ISMM keynote 2018-09-25 18:02:45 +00:00
lib/time lib/time: update vendored tzdata to release 2018e 2018-06-11 14:47:06 +00:00
misc compress: reduce copies of new text for compression testing 2018-09-24 18:26:02 +00:00
src internal/bytealg: improve performance of IndexByte for ppc64x 2018-09-25 20:25:25 +00:00
test test: restore binary.BigEndian use in checkbce 2018-09-24 21:20:51 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
robots.txt

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image 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.

Download and Install

Binary Distributions

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After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.

Install From Source

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.

Contributing

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.