1  /* Straight-line strength reduction control flow variation with incr = 1.  */
       2  
       3  /* { dg-do compile } */
       4  /* { dg-options "-O3 -fdump-tree-optimized" } */
       5  
       6  int
       7  f (int n, int c, int s)
       8  {
       9    int a2, a3, a4, x1, x2, x3, x4;
      10  
      11    x1 = c + s;
      12    x2 = x3 = x4 = c;
      13  
      14    if (n > 64)
      15      {
      16        a2 = 2 * s;
      17        x2 = c + a2;
      18        a3 = 3 * s;
      19        x3 = c + a3;
      20      }
      21    else
      22      {
      23        a4 = 2 * s;
      24        x4 = c + a4;
      25      }
      26  
      27    return x1 + x2 + x3 + x4;
      28  }
      29  
      30  /* { dg-final { scan-tree-dump-times " \\* " 0 "optimized" } } */