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45b26a93f3
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Michael Munday 45b26a93f3 cmd/{asm,compile}: replace TESTB op with CMPWconst on s390x 
TESTB was implemented as AND $0xff, Rx, REGTMP. Unfortunately there
is no 3-operand AND-with-immediate instruction and so it was emulated
by the assembler using two instructions.

This CL uses CMPW instead of AND and also optimizes CMPW to use
the chi instruction where possible.

Overall this CL reduces the size of the .text section of the
bin/go binary by ~2%.

Change-Id: Ic335c29fc1129378fcbb1265bfb10f5b744a0f3f
Reviewed-on: https://go-review.googlesource.com/30690
Run-TryBot: Michael Munday <munday@ca.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-07 20:02:59 +00:00
.github doc: improve issue template 2016-08-29 03:33:28 +00:00
api unicode: upgrade to version 9.0.0 2016-06-28 15:08:11 +00:00
doc spec: clarify acceptable indices in array/slice composite literals 2016-10-06 20:37:39 +00:00
lib/time lib/time: update to IANA release 2016f (July 2016) 2016-07-07 16:15:13 +00:00
misc cmd/compile, cmd/cgo: align complex{64,128} like GCC 2016-10-05 17:44:27 +00:00
src cmd/{asm,compile}: replace TESTB op with CMPWconst on s390x 2016-10-07 20:02:59 +00:00
test test: re-enable live2 test on amd64 2016-10-07 17:34:02 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/go: fail with nice error message on bad GOOS/GOARCH pair 2016-05-06 01:18:07 +00:00
AUTHORS A+C: automated updates 2016-06-24 02:21:02 +00:00
CONTRIBUTING.md doc: use new Gerrit URL and mention our instance in CONTRIBUTING.md 2016-03-09 00:52:42 +00:00
CONTRIBUTORS A+C: automated updates 2016-06-24 02:21:02 +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: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +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.

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For documentation about how to install and use Go, visit https://golang.org/ or load doc/install-source.html in your web browser.

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.

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

To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Note that we do not accept pull requests and that we use the issue tracker for bug reports and proposals only. Please ask questions on https://forum.golangbridge.org or https://groups.google.com/forum/#!forum/golang-nuts.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

--

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:

export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin

See https://golang.org/doc/install or doc/install.html for more details.