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Julien Cretel c0eb7ab306 bytes, strings: micro-optimize EqualFold 
The first loop leaves the lengths of the two arguments unchanged.

Take advantage of this invariant in the loop's condition. Here are some
benchmark results (no change to allocations):

goos: darwin
goarch: amd64
pkg: strings
cpu: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
                          │     old     │                new                 │
                          │   sec/op    │   sec/op     vs base               │
EqualFold/Tests-8           240.0n ± 4%   245.1n ± 5%       ~ (p=0.516 n=20)
EqualFold/ASCII-8           11.50n ± 1%   11.04n ± 0%  -3.96% (p=0.000 n=20)
EqualFold/UnicodePrefix-8   102.1n ± 0%   102.2n ± 0%       ~ (p=0.455 n=20)
EqualFold/UnicodeSuffix-8   90.14n ± 0%   89.80n ± 1%       ~ (p=0.113 n=20)
geomean                     71.00n        70.60n       -0.56%

Change-Id: I1f6d1df8a0398f9493692f59d7369c3f0fbba436
GitHub-Last-Rev: 9508ee26ad
GitHub-Pull-Request: golang/go#73672
Reviewed-on: https://go-review.googlesource.com/c/go/+/671756
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-05-12 07:41:07 -07:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api crypto,crypto/x509: implement MessageSigner 2025-05-08 07:46:12 -07:00
doc crypto,crypto/x509: implement MessageSigner 2025-05-08 07:46:12 -07:00
lib lib/time: build with Ubuntu backward compatibility options 2025-02-06 17:10:15 -08:00
misc misc/linkcheck: remove unused tool 2025-03-20 04:38:55 -07:00
src bytes, strings: micro-optimize EqualFold 2025-05-12 07:41:07 -07:00
test runtime: schedule cleanups across multiple goroutines 2025-05-08 11:10:33 -07:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: fix CC BY license name 2024-07-22 17:45:27 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +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 4.0 Attribution 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

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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.

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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.