1  /* { dg-options "-Os -fdump-rtl-final" } */
       2  
       3  volatile unsigned char u8;
       4  
       5  void test (void)
       6  {
       7    u8 = u8 + u8;
       8    u8 = u8 - u8;
       9  }
      10  
      11  /* { dg-final { scan-rtl-dump-times "mem/v" 6 "final" } } */