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The Go programming language
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Alexander Efremov 76e4833b7a image/png: optimise RGBA encoding 
Optimised RGBA image encoding to PNG. Improved test coverage. Reworked benchmark.

Performance improvement with both old and new versions of the benchmark:

name                           old speed      new speed      delta
EncodeRGBA_OriginalVersion-10   115MB/s ± 1%   308MB/s ± 1%  +166.70%  (p=0.000 n=19+17)
EncodeRGBA_NewVersion-10       40.3MB/s ± 1%  51.1MB/s ± 2%   +26.93%  (p=0.000 n=18+20)

name                           old allocs/op  new allocs/op  delta
EncodeRGBA_OriginalVersion-10      614k ± 0%        0k ± 0%   -99.99%  (p=0.000 n=20+20)
EncodeRGBA_NewVersion-10           614k ± 0%        0k ± 0%   -99.99%  (p=0.000 n=20+20)

Change-Id: I450013909c2410b043cd9c1239facd5bd6e3f3f9
GitHub-Last-Rev: 329d6ac011
GitHub-Pull-Request: golang/go#55119
Reviewed-on: https://go-review.googlesource.com/c/go/+/431575
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Nigel Tao <nigeltao@golang.org>
Reviewed-by: Nigel Tao (INACTIVE; USE @golang.org INSTEAD) <nigeltao@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Nigel Tao <nigeltao@golang.org>
2022-10-14 08:14:05 +00:00
.github .github: update issue label for pkgsite-removal 2022-09-07 16:00:20 +00:00
api runtime/coverage: revise/shorten function names 2022-10-05 14:59:05 +00:00
doc spec: describe an edge case for slice expression of nil slice 2022-09-21 14:06:17 +00:00
lib/time lib/time, time/tzdata: update to 2022b 2022-08-11 20:03:19 +00:00
misc cmd/link: don't reset variable size when handling -X flag 2022-10-13 18:47:30 +00:00
src image/png: optimise RGBA encoding 2022-10-14 08:14:05 +00:00
test test: update test/run.go and some tests to use importcfg 2022-10-12 23:16:41 +00:00
.gitattributes
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md
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README.md README.md: update wiki link 2022-04-26 16:21:18 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

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

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.