go bench_test 源码

2022-07-15
浏览 (1207)

golang bench_test 代码

文件路径：/src/cmd/compile/internal/test/bench_test.go

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package test

import "testing"

var globl int64
var globl32 int32

func BenchmarkLoadAdd(b *testing.B) {
	x := make([]int64, 1024)
	y := make([]int64, 1024)
	for i := 0; i < b.N; i++ {
		var s int64
		for i := range x {
			s ^= x[i] + y[i]
		}
		globl = s
	}
}

// Added for ppc64 extswsli on power9
func BenchmarkExtShift(b *testing.B) {
	x := make([]int32, 1024)
	for i := 0; i < b.N; i++ {
		var s int64
		for i := range x {
			s ^= int64(x[i]+32) * 8
		}
		globl = s
	}
}

func BenchmarkModify(b *testing.B) {
	a := make([]int64, 1024)
	v := globl
	for i := 0; i < b.N; i++ {
		for j := range a {
			a[j] += v
		}
	}
}

func BenchmarkMullImm(b *testing.B) {
	x := make([]int32, 1024)
	for i := 0; i < b.N; i++ {
		var s int32
		for i := range x {
			s += x[i] * 100
		}
		globl32 = s
	}
}

func BenchmarkConstModify(b *testing.B) {
	a := make([]int64, 1024)
	for i := 0; i < b.N; i++ {
		for j := range a {
			a[j] += 3
		}
	}
}

func BenchmarkBitSet(b *testing.B) {
	const N = 64 * 8
	a := make([]uint64, N/64)
	for i := 0; i < b.N; i++ {
		for j := uint64(0); j < N; j++ {
			a[j/64] |= 1 << (j % 64)
		}
	}
}

func BenchmarkBitClear(b *testing.B) {
	const N = 64 * 8
	a := make([]uint64, N/64)
	for i := 0; i < b.N; i++ {
		for j := uint64(0); j < N; j++ {
			a[j/64] &^= 1 << (j % 64)
		}
	}
}

func BenchmarkBitToggle(b *testing.B) {
	const N = 64 * 8
	a := make([]uint64, N/64)
	for i := 0; i < b.N; i++ {
		for j := uint64(0); j < N; j++ {
			a[j/64] ^= 1 << (j % 64)
		}
	}
}

func BenchmarkBitSetConst(b *testing.B) {
	const N = 64
	a := make([]uint64, N)
	for i := 0; i < b.N; i++ {
		for j := range a {
			a[j] |= 1 << 37
		}
	}
}

func BenchmarkBitClearConst(b *testing.B) {
	const N = 64
	a := make([]uint64, N)
	for i := 0; i < b.N; i++ {
		for j := range a {
			a[j] &^= 1 << 37
		}
	}
}

func BenchmarkBitToggleConst(b *testing.B) {
	const N = 64
	a := make([]uint64, N)
	for i := 0; i < b.N; i++ {
		for j := range a {
			a[j] ^= 1 << 37
		}
	}
}

相关信息

go 源码目录

相关文章

go abiutils_test 源码

go abiutilsaux_test 源码

go align_test 源码

go clobberdead_test 源码

go constFold_test 源码

go dep_test 源码

go divconst_test 源码

go fixedbugs_test 源码

go float_test 源码

go global_test 源码

0 赞

所属分类： 后端技术
本文标签： golang
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/63ea43e8c5194abb8ef6268e6a03c3e2

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...