1  /* { dg-do compile } */
       2  /* { dg-options "-fstrict-overflow -O2 -fdump-tree-optimized" } */
       3  
       4  /* We can only unroll when using strict overflow semantics.  */
       5  
       6  int foo (int i)
       7  {
       8    int index;
       9    int r=0;
      10   
      11    for (index = i; index <= i+4; index+=2) 
      12      r++;
      13   
      14    return r;
      15  }
      16  
      17  /* { dg-final { scan-tree-dump "return 3" "optimized" } } */
      18