1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  
       4  void f (void*);
       5  
       6  void g (void)
       7  {
       8    char a[8];
       9    __builtin_memset (a, 0, 8);
      10    __builtin_memset (a, 0, 8);
      11  
      12    f (a);
      13  }
      14  
      15  void h (void)
      16  {
      17    char a[8];
      18    __builtin_memset (a, 0, 8);
      19    __builtin_memset (a, 0, 7);
      20  
      21    f (a);
      22  }
      23  
      24  /* { dg-final { scan-tree-dump-times "__builtin_memset" 2 "optimized" } } */