de)
{
  scalar_int_mode int_mode;
  if (is_a <scalar_int_mode> (mode, &int_mode)
      && GET_MODE_PRECISION (int_mode) < BITS_PER_WORD)
    return LOAD_EXTEND_OP (int_mode);
  return UNKNOWN;
}

/* If X is a PLUS of a base and a constant offset, add the constant to *OFFSET
   and return the base.  Return X otherwise.  */

inline rtx
strip_offset_and_add (rtx x, poly_int64 *offset)
{
  if (GET_CODE (x) == PLUS)
    {
      poly_int64 suboffset;
      x = strip_offset (x, &suboffset);
      *offset = poly_uint64 (*offset) + suboffset;
    }
  return x;
}

/* Return true if X is an operation that always operates on the full
   registers for WORD_REGISTER_OPERATIONS architectures.  */

inline bool
word_register_operation_p (const_rtx x)
{
  switch (GET_CODE (x))
    {
    case CONST_INT:
    case ROTATE:
    case ROTATERT:
    case SIGN_EXTRACT:
    case ZERO_EXTRACT:
      return false;

    default:
      return true;
    }
}

/* Holds an rtx comparison to simplify passing many parameters pertaining to a
   single comparison.  */

struct rtx_comparison {
  rtx_code code;
  rtx op0, op1;
  machine_mode mode;
};

/* gtype-desc.cc.  */
extern void gt_ggc_mx (rtx &);
extern void gt_pch_nx (rtx &);
extern void gt_pch_nx (rtx &, gt_pointer_operator, void *);

#endif /* ! GCC_RTL_H */