1  /* Verify straight-line strength reduction for simple integer subtraction.  */
       2  
       3  /* { dg-do compile } */
       4  /* { dg-options "-O3 -fdump-tree-optimized" } */
       5  
       6  int
       7  f (int s, int c)
       8  {
       9    int a1, a2, a3, x1, x2, x3, x;
      10  
      11    a1 = 2 * s;
      12    x1 = c - a1;
      13    a2 = 4 * s;
      14    x2 = c - a2;
      15    a3 = 6 * s;
      16    x3 = c - a3;
      17    x = x1 + x2 + x3;
      18    return x;
      19  }
      20  
      21  /* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */