1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-forwprop1 -fdump-tree-optimized" } */
       3  
       4  unsigned char foo(int x)
       5  {
       6    int t = -x;
       7    unsigned char t1 = t;
       8    unsigned char t2 = t;
       9    /* We may not rewrite this as (unsigned char)(t - x).  */
      10    return t1 + t2;
      11  }
      12  
      13  /* { dg-final { scan-tree-dump-times "x_" 1 "forwprop1" } } */
      14  /* { dg-final { scan-tree-dump-times "x_" 1 "optimized" } } */