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Than McIntosh c26f954a54 cmd/compile/internal/amd64: follow-on regabi fix for amd64 zerorange 
This patch provides a better long-term fix for the compiler's
zerorange() helper function to make it generate code friendly to the
register ABI.

CL 305829 did part of the work, but didn't properly handle the case
where the compiler emits a REP.STOSQ sequence; this patch changes the
REP code to make sure it doesn't clobber any incoming register
parameter values.

Also included is a test that is specifically written to trigger
the REP emit code in the compiler (prior to this, this code was
not being hit on linux/amd64 all.bash).

Updates #45372.
Updates #40724.

Change-Id: Iaf1c4e709e98eda45cd6f3aeebda0fe9160f1f42
Reviewed-on: https://go-review.googlesource.com/c/go/+/307829
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-12 10:30:24 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api syscall: restore broken GetQueuedCompletionStatus signature but make it not crash 2021-02-24 23:35:00 +00:00
doc runtime/cgo: add Handle for managing (c)go pointers 2021-04-06 23:39:42 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc all: fix spellings 2021-04-10 01:46:41 +00:00
src cmd/compile/internal/amd64: follow-on regabi fix for amd64 zerorange 2021-04-12 10:30:24 +00:00
test cmd/compile: include typecheck information in export/import 2021-04-10 14:58:18 +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.