1// run
2
3// Copyright 2019 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Code was miscompiled on ppc64le due to incorrect zero-extension
8// that was CSE'd.
9
10package main
11
12//go:noinline
13func g(i uint64) uint64 {
14	return uint64(uint32(i))
15}
16
17var sink uint64
18
19func main() {
20	for i := uint64(0); i < 1; i++ {
21		i32 := int32(i - 1)
22		sink = uint64((uint32(i32) << 1) ^ uint32((i32 >> 31)))
23		x := g(uint64(i32))
24		if x != uint64(uint32(i32)) {
25			panic(x)
26		}
27	}
28}
29