golang race 代码
文件路径：/test/codegen/race.go
/ asmcheck -race
/ Copyright 2019 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 codegen
/ Check that we elide racefuncenter/racefuncexit for
/ functions with no calls (but which might panic
/ in various ways). See issue 31219.
/ amd64:-"CALL.*racefuncenter.*"
/ arm64:-"CALL.*racefuncenter.*"
/ ppc64le:-"CALL.*racefuncenter.*"
func RaceMightPanic(a []int, i, j, k, s int) {
var b [4]int
_ = b[i] / panicIndex
_ = a[i:j] / panicSlice
_ = a[i:j:k] / also panicSlice
_ = i << s / panicShift
_ = i / j / panicDivide
}