1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-fre1" } */
       3  
       4  int
       5  f (int *__restrict__ *__restrict__ *__restrict__ a, int *b)
       6  {
       7    *b = 1;
       8    ***a  = 2;
       9    return *b;
      10  }
      11  
      12  /* { dg-final { scan-tree-dump-times "return 1" 1 "fre1" } } */