dgryski / go-bits Goto Github PK
View Code? Open in Web Editor NEWamd64 optimized bit operations
License: MIT License
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please tag and version this project
Hello,
Can you please tag and version this project?
I am the Debian Maintainer for go-bits and versioning would help Debian keep up with development.
Please add a license
Hello!
I would like to upload go-bits to Debian, but there is no license.
Can you please add a License?
Thanks!
missing function
Hello,
When I try to test the cmd/influxd/run in the project github.com/influxdata/influxdb in version 1.4.2 it fails with
github.com/dgryski/go-bits
/usr/share/gocode/src/github.com/dgryski/go-bits/clz_asm.go:6: missing function body for "Clz"
/usr/share/gocode/src/github.com/dgryski/go-bits/ctz_asm.go:6: missing function body for "Ctz"
/usr/share/gocode/src/github.com/dgryski/go-bits/popcnt_asm.go:6: missing function body for "Popcnt"
Thank you for your help
This package already uses code written in assembly language, how to use it to improve performance.
For go-bits, I see a lot of code written in assembly language, how to compile it to improve performance.
SIGILL: illegal instruction
Hello,
I am facing the following issue when do go test:
go 1.5.1 is used.
[ 88s] + go test -x github.com/dgryski/go-bits...
[ 88s] WORK=/tmp/go-build994662218
[ 89s] mkdir -p $WORK/github.com/dgryski/go-bits/_test/github.com/dgryski/
[ 89s] mkdir -p $WORK/github.com/dgryski/go-bits/_test/_obj_test/
[ 89s] cd /home/abuild/rpmbuild/BUILD/go/src/github.com/dgryski/go-bits
[ 89s] /usr/lib64/go/pkg/tool/linux_amd64/compile -o $WORK/github.com/dgryski/go-bits/_test/github.com/dgryski/go-bits.a -trimpath $WORK -p github.com/dgryski/go-bits -buildid efc6c7e406c5acd4f5f3da0af4541b559fc9d019 -D _/home/abuild/rpmbuild/BUILD/go/src/github.com/dgryski/go-bits -I $WORK -pack -asmhdr $WORK/github.com/dgryski/go-bits/_test/_obj_test/go_asm.h ./clz_asm.go ./ctz_asm.go ./popcnt_asm.go ./bits_test.go
[ 89s] /usr/lib64/go/pkg/tool/linux_amd64/asm -o $WORK/github.com/dgryski/go-bits/_test/_obj_test/clz_amd64.o -trimpath $WORK -I $WORK/github.com/dgryski/go-bits/_test/_obj_test/ -I /usr/lib64/go/pkg/include -D GOOS_linux -D GOARCH_amd64 ./clz_amd64.s
[ 89s] /usr/lib64/go/pkg/tool/linux_amd64/asm -o $WORK/github.com/dgryski/go-bits/_test/_obj_test/ctz_amd64.o -trimpath $WORK -I $WORK/github.com/dgryski/go-bits/_test/_obj_test/ -I /usr/lib64/go/pkg/include -D GOOS_linux -D GOARCH_amd64 ./ctz_amd64.s
[ 89s] /usr/lib64/go/pkg/tool/linux_amd64/asm -o $WORK/github.com/dgryski/go-bits/_test/_obj_test/popcnt_amd64.o -trimpath $WORK -I $WORK/github.com/dgryski/go-bits/_test/_obj_test/ -I /usr/lib64/go/pkg/include -D GOOS_linux -D GOARCH_amd64 ./popcnt_amd64.s
[ 89s] pack r $WORK/github.com/dgryski/go-bits/_test/github.com/dgryski/go-bits.a $WORK/github.com/dgryski/go-bits/_test/_obj_test/clz_amd64.o $WORK/github.com/dgryski/go-bits/_test/_obj_test/ctz_amd64.o $WORK/github.com/dgryski/go-bits/_test/_obj_test/popcnt_amd64.o # internal
[ 89s] mkdir -p $WORK/github.com/dgryski/go-bits/_test/
[ 89s] cd $WORK/github.com/dgryski/go-bits/_test
[ 89s] /usr/lib64/go/pkg/tool/linux_amd64/compile -o ./main.a -trimpath $WORK -p main -complete -D "" -I . -I $WORK -pack ./_testmain.go
[ 89s] cd .
[ 89s] /usr/lib64/go/pkg/tool/linux_amd64/link -o $WORK/github.com/dgryski/go-bits/_test/go-bits.test -L $WORK/github.com/dgryski/go-bits/_test -L $WORK -w -extld=gcc -buildmode=exe $WORK/github.com/dgryski/go-bits/_test/main.a
[ 91s] $WORK/github.com/dgryski/go-bits/_test/go-bits.test
[ 91s] SIGILL: illegal instruction
[ 91s] PC=0x47df75 m=0
[ 91s]
[ 91s] goroutine 7 [running]:
[ 91s] github.com/dgryski/go-bits.Popcnt(0x38fc2ffac2fd9401, 0x40f829)
[ 91s] /home/abuild/rpmbuild/BUILD/go/src/github.com/dgryski/go-bits/popcnt_amd64.s:9 +0x5 fp=0xc820046970 sp=0xc820046968
[ 91s] github.com/dgryski/go-bits.testQuick.func1(0x38fc2ffac2fd9401, 0x0)
[ 91s] /home/abuild/rpmbuild/BUILD/go/src/github.com/dgryski/go-bits/bits_test.go:10 +0x31 fp=0xc820046998 sp=0xc820046970
[ 91s] runtime.call32(0xc820016140, 0xc820013ba0, 0xc8200a2e40, 0x800000010)
[ 91s] /usr/lib64/go/src/runtime/asm_amd64.s:437 +0x3e fp=0xc8200469c0 sp=0xc820046998
[ 91s] reflect.Value.call(0x540060, 0xc820013ba0, 0x13, 0x58c290, 0x4, 0xc820013bc0, 0x1, 0x1, 0x0, 0x0, ...)
[ 91s] /usr/lib64/go/src/reflect/value.go:432 +0x120a fp=0xc820046d10 sp=0xc8200469c0
[ 91s] reflect.Value.Call(0x540060, 0xc820013ba0, 0x13, 0xc820013bc0, 0x1, 0x1, 0x0, 0x0, 0x0)
[ 91s] /usr/lib64/go/src/reflect/value.go:300 +0xb1 fp=0xc820046d70 sp=0xc820046d10
[ 91s] testing/quick.Check(0x540060, 0xc820013ba0, 0x663640, 0x0, 0x0)
[ 91s] /usr/lib64/go/src/testing/quick/quick.go:270 +0x421 fp=0xc820046e70 sp=0xc820046d70
[ 91s] github.com/dgryski/go-bits.testQuick(0xc82009a120, 0x58e270, 0x6, 0x5d4a58, 0x5d4a88)
[ 91s] /home/abuild/rpmbuild/BUILD/go/src/github.com/dgryski/go-bits/bits_test.go:12 +0xa7 fp=0xc820046f38 sp=0xc820046e70
[ 91s] github.com/dgryski/go-bits.TestQuickPopcnt(0xc82009a120)
[ 91s] /home/abuild/rpmbuild/BUILD/go/src/github.com/dgryski/go-bits/bits_test.go:50 +0x4e fp=0xc820046f68 sp=0xc820046f38
[ 91s] testing.tRunner(0xc82009a120, 0x660d30)
[ 91s] /usr/lib64/go/src/testing/testing.go:456 +0x98 fp=0xc820046fa0 sp=0xc820046f68
[ 91s] runtime.goexit()
[ 91s] /usr/lib64/go/src/runtime/asm_amd64.s:1696 +0x1 fp=0xc820046fa8 sp=0xc820046fa0
[ 91s] created by testing.RunTests
[ 91s] /usr/lib64/go/src/testing/testing.go:561 +0x86d
[ 91s]
[ 91s] goroutine 1 [chan receive]:
[ 91s] testing.RunTests(0x5d4a90, 0x660d00, 0x3, 0x3, 0x663d01)
[ 91s] /usr/lib64/go/src/testing/testing.go:562 +0x8ad
[ 91s] testing.(*M).Run(0xc820041ef8, 0xc82000a780)
[ 91s] /usr/lib64/go/src/testing/testing.go:494 +0x70
[ 91s] main.main()
[ 91s] github.com/dgryski/go-bits/_test/_testmain.go:58 +0x116
[ 91s]
[ 91s] rax 0x5d4a58
[ 91s] rbx 0x47df70
[ 91s] rcx 0xc820001080
[ 91s] rdx 0x38fc2ffac2fd9401
[ 91s] rdi 0xc8200469a8
[ 91s] rsi 0xc8200a2e50
[ 91s] rbp 0xc820016140
[ 91s] rsp 0xc820046968
[ 91s] r8 0xfffffffffffffff8
[ 91s] r9 0x1
[ 91s] r10 0xc820013bc0
[ 91s] r11 0x0
[ 91s] r12 0x10
[ 91s] r13 0x5d267e
[ 91s] r14 0x3
[ 91s] r15 0x8
[ 91s] rip 0x47df75
[ 91s] rflags 0x10202
[ 91s] cs 0xe033
[ 91s] fs 0x0
[ 91s] gs 0x0
[ 91s] FAIL github.com/dgryski/go-bits 0.054s
autogenerate 8, 16, 32 bit versions
This code should work without uint64
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