File size: 2,973 Bytes
fc11197 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | // 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
}
}
}
func BenchmarkMulNeg(b *testing.B) {
x := make([]int64, 1024)
for i := 0; i < b.N; i++ {
var s int64
for i := range x {
s = (-x[i]) * 11
}
globl = s
}
}
func BenchmarkMul2Neg(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
}
}
func BenchmarkSimplifyNegMul(b *testing.B) {
x := make([]int64, 1024)
y := make([]int64, 1024)
b.ResetTimer()
for i := 0; i < b.N; i++ {
var s int64
for i := range x {
s = -(-x[i] * y[i])
}
globl = s
}
}
func BenchmarkSimplifyNegDiv(b *testing.B) {
x := make([]int64, 1024)
y := make([]int64, 1024)
for i := range y {
y[i] = 42
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
var s int64
for i := range x {
s = -(-x[i] / y[i])
}
globl = s
}
}
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