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18e86644a3
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Nigel Tao 18e86644a3 cmd/gc: cache itab lookup in convT2I. 
There may be further savings if convT2I can avoid the function call
if the cache is good and T is uintptr-shaped, a la convT2E, but that
will be a follow-up CL.

src/pkg/runtime:
benchmark                  old ns/op    new ns/op    delta
BenchmarkConvT2ISmall             43           15  -64.01%
BenchmarkConvT2IUintptr           45           14  -67.48%
BenchmarkConvT2ILarge            130          101  -22.31%

test/bench/go1:
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    8588997000   8499058000   -1.05%
BenchmarkFannkuch11      5300392000   5358093000   +1.09%
BenchmarkGobDecode         30295580     31040190   +2.46%
BenchmarkGobEncode         18102070     17675650   -2.36%
BenchmarkGzip             774191400    771591400   -0.34%
BenchmarkGunzip           245915100    247464100   +0.63%
BenchmarkJSONEncode       123577000    121423050   -1.74%
BenchmarkJSONDecode       451969800    596256200  +31.92%
BenchmarkMandelbrot200     10060050     10072880   +0.13%
BenchmarkParse             10989840     11037710   +0.44%
BenchmarkRevcomp         1782666000   1716864000   -3.69%
BenchmarkTemplate         798286600    723234400   -9.40%

R=rsc, bradfitz, go.peter.90, daniel.morsing, dave, uriel
CC=golang-dev
https://golang.org/cl/6337058
2012-07-03 09:09:05 +10:00
api api: update next.txt 2012-06-30 12:25:38 -07:00
doc go spec: clean up section on selectors 2012-06-28 12:22:24 -07:00
include build: remove unnecessary pragmas 2012-02-06 12:45:23 -05:00
lib codereview: support mercurial 2.2.1 2012-05-17 02:54:03 +08:00
misc cmd/cgo: generate definitions for GoSlice 2012-06-30 12:40:07 +08:00
src cmd/gc: cache itab lookup in convT2I. 2012-07-03 09:09:05 +10:00
test cmd/gc: cache itab lookup in convT2I. 2012-07-03 09:09:05 +10:00
.hgignore build: update Makefile to track source code dependencies better 2012-03-13 03:31:11 +08:00
.hgtags tag go1.0.2 2012-06-14 13:18:10 +10:00
AUTHORS A+C: L Campbell (individual CLA) 2012-06-25 20:25:59 -04:00
CONTRIBUTORS A+C: L Campbell (individual CLA) 2012-06-25 20:25:59 -04:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

README 

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.