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Matthew Dempsky 04572fa29b cmd/compile: use BMI1 instructions for GOAMD64=v3 and higher 
BMI1 includes four instructions (ANDN, BLSI, BLSMSK, BLSR) that are
easy to peephole optimize, and which GCC always seems to favor using
when available and applicable.

Updates #45453.

Change-Id: I0274184057058f5c579e5bc3ea9c414396d3cf46
Reviewed-on: https://go-review.googlesource.com/c/go/+/351130
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2021-09-22 00:15:27 +00:00
.github
api [dev.fuzz] all: merge master (65f0d24) into dev.fuzz 2021-09-09 09:23:26 -07:00
doc spec: fix incorrect type in a shift example 2021-09-16 23:13:48 +00:00
lib/time
misc cmd/cgo: for godefs, don't let field prefix removal cause duplicates 2021-09-16 23:56:28 +00:00
src cmd/compile: use BMI1 instructions for GOAMD64=v3 and higher 2021-09-22 00:15:27 +00:00
test cmd/compile: use BMI1 instructions for GOAMD64=v3 and higher 2021-09-22 00:15:27 +00:00
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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://golang.org/dl/.

After downloading a binary release, visit https://golang.org/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://golang.org/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://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.