1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -ftree-tail-merge -fno-tree-dominator-opts" } */
       3  
       4  int bar (int i);
       5  
       6  void
       7  foo (int c, int d)
       8  {
       9    if (bar (c))
      10      bar (c);
      11    d = 33;
      12    while (c == d);
      13  }