mirror of
https://github.com/golang/go
synced 2024-11-26 11:38:01 -07:00
27 lines
507 B
Go
27 lines
507 B
Go
|
// 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.
|
||
|
|
|
||
|
|
// Issue 26438: arm64 backend may use 64-bit TST for
|
||
|
|
// "if uint32(a)&uint32(b) == 0", which should be
|
||
|
|
// 32-bit TSTW
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
//go:noinline
|
||
|
|
func tstw(a, b uint64) uint64 {
|
||
|
|
if uint32(a)&uint32(b) == 0 {
|
||
|
|
return 100
|
||
|
|
} else {
|
||
|
|
return 200
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
if tstw(0xff00000000, 0xaa00000000) == 200 {
|
||
|
|
panic("impossible")
|
||
|
|
}
|
||
|
|
}
|