gcc/testsuite/gcc.target/i386/pr48237.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fcaller-saves -fschedule-insns2 -fselective-scheduling2 -mtune=core2" } */
   3
   4 union double_union
   5 {
   6   double d;
   7   int i[2];
   8 };
   9
  10 void bar (int, ...);
  11
  12 void
  13 foo (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 }