1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  /* { dg-final { scan-assembler "testb" } } */
       4  void
       5  ftn (char *sp)
       6  {
       7    char status;
       8  
       9    while (1)
      10      {
      11        *sp = 0xE8;
      12        status = *(volatile char *) sp;
      13        if (status & 0x80)
      14  	break;
      15      }
      16  }