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