1/* { dg-do compile } */
2/* { dg-options "-O -fcaller-saves -fschedule-insns2 -fselective-scheduling2 -mtune=core2" } */
3
4union double_union
5{
6  double d;
7  int i[2];
8};
9
10void bar (int, ...);
11
12void
13foo (double d)
14{
15  union double_union du = { d };
16  while (1)
17    {
18      du.i[1] -= 0x100000L;
19      bar (0, du.d);
20      du.d += d;
21    }
22}
23