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The Go programming language
357f733695
Pseudo-instructions MOVBS and MOVHS are used to clarify the semantics of short integers vs. registers: * 8-bit and 16-bit values in registers are assumed to always be zero-extended or sign-extended depending on their type. * MOVB is truncation or move of an already extended value between registers. * MOVBU enforces zero-extension at the destination (register). * MOVBS enforces sign-extension at the destination (register). And similarly for MOVH/MOVS/MOVHU. The linker is adapted to assemble MOVB and MOVH to an ordinary mov. Also a peephole pass in 5g that aims at eliminating redundant zero/sign extensions is improved. encoding/binary: benchmark old ns/op new ns/op delta BenchmarkReadSlice1000Int32s 220387 217185 -1.45% BenchmarkReadStruct 12839 12910 +0.55% BenchmarkReadInts 5692 5534 -2.78% BenchmarkWriteInts 6137 6016 -1.97% BenchmarkPutUvarint32 257 241 -6.23% BenchmarkPutUvarint64 812 754 -7.14% benchmark old MB/s new MB/s speedup BenchmarkReadSlice1000Int32s 18.15 18.42 1.01x BenchmarkReadStruct 5.45 5.42 0.99x BenchmarkReadInts 5.27 5.42 1.03x BenchmarkWriteInts 4.89 4.99 1.02x BenchmarkPutUvarint32 15.56 16.57 1.06x BenchmarkPutUvarint64 9.85 10.60 1.08x crypto/des: benchmark old ns/op new ns/op delta BenchmarkEncrypt 7002 5169 -26.18% BenchmarkDecrypt 7015 5195 -25.94% benchmark old MB/s new MB/s speedup BenchmarkEncrypt 1.14 1.55 1.36x BenchmarkDecrypt 1.14 1.54 1.35x strconv: benchmark old ns/op new ns/op delta BenchmarkAtof64Decimal 457 385 -15.75% BenchmarkAtof64Float 574 479 -16.55% BenchmarkAtof64FloatExp 1035 906 -12.46% BenchmarkAtof64Big 1793 1457 -18.74% BenchmarkAtof64RandomBits 2267 2066 -8.87% BenchmarkAtof64RandomFloats 1416 1194 -15.68% BenchmarkAtof32Decimal 451 379 -15.96% BenchmarkAtof32Float 547 435 -20.48% BenchmarkAtof32FloatExp 1095 986 -9.95% BenchmarkAtof32Random 1154 1006 -12.82% BenchmarkAtoi 1415 1380 -2.47% BenchmarkAtoiNeg 1414 1401 -0.92% BenchmarkAtoi64 1744 1671 -4.19% BenchmarkAtoi64Neg 1737 1662 -4.32% Fixes #1837. R=rsc, dave, bradfitz CC=golang-dev https://golang.org/cl/12424043 |
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| robots.txt | ||
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.