summaryrefslogtreecommitdiffstats
path: root/test/fixedbugs/issue26438.go
blob: d44da21eb07cbaa7412e28489cd1be907e2a2e08 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
// 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")
	}
}