1  /* Straight-line strength reduction control flow variation.  */
       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 a1, a2, x, x1, x2, x3, x4;
      10  
      11    a1 = 2 * s;
      12  
      13    if (n > 64)
      14      {
      15        x1 = c + a1;
      16        a2 = 4 * s;
      17        x2 = c + a2;
      18        x = x1 + x2;
      19      }
      20    else
      21      {
      22        x3 = c + a1;
      23        a2 = 4 * s;
      24        x4 = c + a2;
      25        x = x4 / x3;
      26      }
      27  
      28    return x;
      29  }
      30  
      31  /* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */