| // run | |
| // Copyright 2018 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. | |
| // Bad AND/BTR combination rule. | |
| package main | |
| import "fmt" | |
| //go:noinline | |
| func f(x uint64) uint64 { | |
| return (x >> 48) &^ (uint64(0x4000)) | |
| } | |
| func main() { | |
| bad := false | |
| if got, want := f(^uint64(0)), uint64(0xbfff); got != want { | |
| fmt.Printf("got %x, want %x\n", got, want) | |
| bad = true | |
| } | |
| if bad { | |
| panic("bad") | |
| } | |
| } |