qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-24 03:30:18 -07:00
Code Releases Activity
The Go programming language
31,562 Commits 58 Branches 402 Tags 522 MiB
Go 89.6%
Assembly 5.2%
HTML 4.8%
C 0.2%
Shell 0.1%
44053de365
Go to file
Lynn Boger 44053de365 cmd/compile: use reg moves for int <-> float conversions on ppc64x 
This makes a change in the SSA code generated for OpPPC64Xf2i64
and OpPPC64Xi2f64 to use register based instructions to convert
between float and integer.  This will require at least power8.
Currently the conversion is done by storing to and loading
from memory, which is more expensive.

This improves some of the math functions:

BenchmarkExp-128                     74.1          66.8          -9.85%
BenchmarkExpGo-128                   87.4          66.3          -24.14%
BenchmarkExp2-128                    72.2          64.3          -10.94%
BenchmarkExp2Go-128                  74.3          65.9          -11.31%

BenchmarkLgamma-128                  51.0          39.7          -22.16%
BenchmarkLog-128                     42.9          40.6          -5.36%
BenchmarkLogb-128                    11.5          9.16          -20.35%
BenchmarkLog1p-128                   38.9          36.2          -6.94%

BenchmarkSin-128                     29.5          23.7          -19.66%
BenchmarkTan-128                     32.8          27.4          -16.46%

Fixes #18922

Change-Id: I8e1cf14d3880d7cd720dc5188dd174cba1f7fef7
Reviewed-on: https://go-review.googlesource.com/36725
Reviewed-by: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
Reviewed-by: Keith Randall <khr@golang.org>
2017-03-01 16:02:24 +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 website: mention go1.8 in project page 2017-02-23 19:17:44 +00:00
lib/time lib/time: update tzdata to 2016j 2017-01-05 01:00:53 +00:00
misc cmd/pprof: vendor pprof from github.com/google/pprof 2017-02-24 19:18:53 +00:00
src cmd/compile: use reg moves for int <-> float conversions on ppc64x 2017-03-01 16:02:24 +00:00
test cmd/compile/internal/gc: separate builtin and real runtime packages 2017-03-01 01:06:32 +00:00
.gitattributes
.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
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: add attribution for the Gopher image 2017-02-03 19:39:41 +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.