1  /* { dg-do compile } */ 
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  extern int printf (const char *, ...);
       4  int main(int argc, int b)
       5  {
       6    /* We should be able to get rid of the a - i.  */
       7    int i;
       8    for (i = 0; i < 50; i++)
       9      {
      10        int a = b + i;
      11        int c = a - i;
      12        int d = argc + b;
      13        printf ("%d %d\n", c,d);
      14      }
      15  }
      16  /* { dg-final { scan-tree-dump-times "a - i" 0 "optimized"} } */