1  
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-phiopt1-details" } */
       4  
       5  extern void bar (char, char);
       6  int
       7  foo (char b)
       8  {
       9    char a;
      10    a = b;
      11    b = 'b';
      12    bar (a, b);
      13    b = a;
      14    if (b == 0)
      15      a++;
      16    return a + b;
      17  }
      18  
      19  /* { dg-final { scan-tree-dump-times "factor conversion out" 0 "phiopt1" } } */