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The Go programming language
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Lynn Boger 23bd919136 cmd/compile: improve LoweredZero performance for ppc64x 
This change improves the performance of the LoweredZero rule
on ppc64x.

The improvement can be seen in the runtime ClearFat
benchmarks:

BenchmarkClearFat12-16       2.40          0.69          -71.25%
BenchmarkClearFat16-16       9.98          0.93          -90.68%
BenchmarkClearFat24-16       4.75          0.93          -80.42%
BenchmarkClearFat32-16       6.02          0.93          -84.55%
BenchmarkClearFat40-16       7.19          1.16          -83.87%
BenchmarkClearFat48-16       15.0          1.39          -90.73%
BenchmarkClearFat56-16       9.95          1.62          -83.72%
BenchmarkClearFat64-16       18.0          1.86          -89.67%
BenchmarkClearFat128-16      30.0          8.08          -73.07%
BenchmarkClearFat256-16      52.5          11.3          -78.48%
BenchmarkClearFat512-16      97.0          19.0          -80.41%
BenchmarkClearFat1024-16     244           34.2          -85.98%

Fixes: #19532

Change-Id: If493e28bc1d8e61bc79978498be9f5336a36cd3f
Reviewed-on: https://go-review.googlesource.com/38096
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Munday <munday@ca.ibm.com>
 		2017-03-21 15:08:02 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api math/big: define Word as uint instead of uintptr 2017-02-21 19:31:40 +00:00
doc doc: reorganize the contribution guidelines into a guide 2017-03-16 21:43:32 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
src cmd/compile: improve LoweredZero performance for ppc64x 2017-03-21 15:08:02 +00:00
test runtime: add mapdelete_fast* 2017-03-21 06:07:24 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/dist: move cmd/go z files to cmd/go/internal/cfg 2017-02-03 20:30:52 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
…
README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +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.

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 or load doc/install.html in your web browser 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 or load doc/install-source.html in your web browser for source installation instructions.

Contributing

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 the Go project does not use GitHub pull requests, and that we use 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.