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The Go programming language
001b75c942
Drop expecttaken function in favor of extra argument to gbranch and bgen. Mark loop condition as likely to be true, so that loops are generated inline. The main benefit here is contiguous code when trying to read the generated assembly. It has only minor effects on the timing, and they mostly cancel the minor effects that aligning function entry points had. One exception: both changes made Fannkuch faster. Compared to before CL 6244066 (before aligned functions) benchmark old ns/op new ns/op delta BenchmarkBinaryTree17 4222117400 4201958800 -0.48% BenchmarkFannkuch11 3462631800 3215908600 -7.13% BenchmarkGobDecode 20887622 20899164 +0.06% BenchmarkGobEncode 9548772 9439083 -1.15% BenchmarkGzip 151687 152060 +0.25% BenchmarkGunzip 8742 8711 -0.35% BenchmarkJSONEncode 62730560 62686700 -0.07% BenchmarkJSONDecode 252569180 252368960 -0.08% BenchmarkMandelbrot200 5267599 5252531 -0.29% BenchmarkRevcomp25M 980813500 985248400 +0.45% BenchmarkTemplate 361259100 357414680 -1.06% Compared to tip (aligned functions): benchmark old ns/op new ns/op delta BenchmarkBinaryTree17 4140739800 4201958800 +1.48% BenchmarkFannkuch11 3259914400 3215908600 -1.35% BenchmarkGobDecode 20620222 20899164 +1.35% BenchmarkGobEncode 9384886 9439083 +0.58% BenchmarkGzip 150333 152060 +1.15% BenchmarkGunzip 8741 8711 -0.34% BenchmarkJSONEncode 65210990 62686700 -3.87% BenchmarkJSONDecode 249394860 252368960 +1.19% BenchmarkMandelbrot200 5273394 5252531 -0.40% BenchmarkRevcomp25M 996013800 985248400 -1.08% BenchmarkTemplate 360620840 357414680 -0.89% R=ken2 CC=golang-dev https://golang.org/cl/6245069 |
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This is the source code repository for the Go programming language.
For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.
After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.
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 README). 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.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 doc/install.html for more details.