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// Copyright 2022 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.
// WARNING: Please avoid updating this file. If this file needs to be updated,
// then a new inline_hot.pprof file should be generated:
//
// $ cd $GOROOT/src/cmd/compile/internal/test/testdata/pgo/inline/
// $ go test -bench=. -cpuprofile ./inline_hot.pprof
package main
import (
"time"
)
type BS struct {
length uint
s []uint64
}
const wSize = uint(64)
const lWSize = uint(6)
func D(i uint) int {
return int((i + (wSize - 1)) >> lWSize)
}
func N(length uint) (bs *BS) {
bs = &BS{
length,
make([]uint64, D(length)),
}
return bs
}
func (b *BS) S(i uint) *BS {
b.s[i>>lWSize] |= 1 << (i & (wSize - 1))
return b
}
var jn = [...]byte{
0, 1, 56, 2, 57, 49, 28, 3, 61, 58, 42, 50, 38, 29, 17, 4,
62, 47, 59, 36, 45, 43, 51, 22, 53, 39, 33, 30, 24, 18, 12, 5,
63, 55, 48, 27, 60, 41, 37, 16, 46, 35, 44, 21, 52, 32, 23, 11,
54, 26, 40, 15, 34, 20, 31, 10, 25, 14, 19, 9, 13, 8, 7, 6,
}
func T(v uint64) uint {
return uint(jn[((v&-v)*0x03f79d71b4ca8b09)>>58])
}
func (b *BS) NS(i uint) (uint, bool) {
x := int(i >> lWSize)
if x >= len(b.s) {
return 0, false
}
w := b.s[x]
w = w >> (i & (wSize - 1))
if w != 0 {
return i + T(w), true
}
x = x + 1
for x < len(b.s) {
if b.s[x] != 0 {
return uint(x)*wSize + T(b.s[x]), true
}
x = x + 1
}
return 0, false
}
func A() {
s := N(100000)
for i := 0; i < 1000; i += 30 {
s.S(uint(i))
}
for j := 0; j < 1000; j++ {
c := uint(0)
for i, e := s.NS(0); e; i, e = s.NS(i + 1) {
c++
}
}
}
func main() {
time.Sleep(time.Second)
A()
}