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// 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")
}
}