| // run | |
| // Copyright 2015 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. | |
| // Issue 12133. The CX register was getting clobbered | |
| // because we did not keep track of its allocation correctly. | |
| package main | |
| import "fmt" | |
| func main() { | |
| want := uint(48) | |
| got := f1(48) | |
| if got != want { | |
| fmt.Println("got", got, ", wanted", want) | |
| panic("bad") | |
| } | |
| } | |
| //go:noinline | |
| func f1(v1 uint) uint { | |
| return v1 >> ((1 >> v1) + (1 >> v1)) | |
| } |