go bench_test 源码
golang bench_test 代码
文件路径：/src/cmd/compile/internal/ssa/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 ssa
import (
"math/rand"
"testing"
)
var d int
//go:noinline
func fn(a, b int) bool {
c := false
if a > 0 {
if b < 0 {
d = d + 1
}
c = true
}
return c
}
func BenchmarkPhioptPass(b *testing.B) {
for i := 0; i < b.N; i++ {
a := rand.Perm(i/10 + 10)
for i := 1; i < len(a)/2; i++ {
fn(a[i]-a[i-1], a[i+len(a)/2-2]-a[i+len(a)/2-1])
}
}
}
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