davecheney

localhost(~/src) % gccgo -v
Using built-in specs.
COLLECT_GCC=gccgo
COLLECT_LTO_WRAPPER=/opt/libexec/gcc/arm-linux-gnueabihf/4.8.2/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../gccgo/configure --prefix=/opt --enable-languages=c,c++,go --with-ld=/usr/bin/ld --enable-shared --without-included-gettext --enable-threads=posix --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --with-system-zlib --with-cloog --enable-cloog-backend=ppl --disable-cloog-version-check --disable-ppl-version-check --enable-multiarch --enable-multilib --disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb --disable-werror --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
Thread model: posix
gcc version 4.8.2 20130927 (prerelease) (GCC) 
localhost(~/src) % go run -compiler gccgo helloworld.go 
Hello gccgo

davecheney

/home/dfc/devel/autobench/work/go.11/misc/benchcmp /home/dfc/devel/autobench/work/http-11.txt /home/dfc/devel/autobench/work/http-tip.txt
benchmark                                   old ns/op    new ns/op    delta
BenchmarkHeaderWriteSubset                       1455         1119  -23.09%
BenchmarkReadRequestChrome                       7697         6959   -9.59%
BenchmarkReadRequestCurl                         4065         3573  -12.10%
BenchmarkReadRequestApachebench                  4017         3555  -11.50%
BenchmarkReadRequestSiege                        5321         4675  -12.14%
BenchmarkReadRequestWrk                          2698         2651   -1.74%
BenchmarkClientServer                           58534        57838   -1.19%
BenchmarkClientServerParallel4                  54188        55070   +1.63%

davecheney

#!/bin/bash

set -e
go test -c # -race
PKG=$(basename $(pwd))

while true ; do 
        export GOMAXPROCS=$[ 1 + $[ RANDOM % 128 ]]
        GOTRACEBACK=2 ./$PKG.test $@ 2>&1
done

davecheney

// the setup routine runs once when you press reset:
void setup() {                
  pinMode(3, OUTPUT);
  pinMode(11, OUTPUT);
  TCCR2Af = _BV(COM2A0) | _BV(COM2B1) | _BV(WGM21) | _BV(WGM20);
  TCCR2B = _BV(WGM22) | _BV(CS20);
  OCR2A = 1;
  OCR2B = 254;
}

davecheney

package main

import (
        "flag"
        "io"
        "log"
        "net"
        "os"
        "strings"
        "time"

davecheney

lib9
libbio
libmach
misc/pprof
cmd/addr2line
cmd/nm
cmd/objdump
cmd/pack
cmd/prof
cmd/cc

davecheney

#!/bin/bash

set -e

eval $(go env)
export GOROOT

pkgs() {
        go list std | grep -v cmd
}

davecheney

bytes: improved bytes.Equal for arm

Backport https://codereview.appspot.com/8056043/ to arm.

Work in progress

test/bench/go1:

benchmark                         old ns/op    new ns/op    delta
BenchmarkBinaryTree17            2147483647   2147483647   -6.77%

davecheney

* /exp/types/staging: expression and statement type checking.
* 5a, 5l, math: Add support for ABSD, ABSF floating point instructions (thanks Michał Derkacz).
* 5a, 5l: add PLD (preload data) instruction (thanks Shenghou Ma).
* 5a, 6a, 8a: take GOROOT_FINAL into consideration (thanks Shenghou Ma).
* 5c, 6c, 8c: take GOROOT_FINAL into consideration (thanks Shenghou Ma).
* 5l, runtime: remove softfloat emulation code when not used (thanks Shenghou Ma).
* 5l: trivial whitespace cleanup (thanks Robert Hencke).
* 6a, 6l: add PREFETCH instructions.
* 6c, 6g, 6l: add MOVQL to make truncation explicit.
* 6g: delete unnecessary OXXX initialization.

davecheney

package main

import (
        "fmt"
        "io"
        "net/http"
        "os"
        "os/signal"
        "runtime/pprof"
        "strconv"