extern int check_asm_operands (rtx);
extern int asm_operand_ok (rtx, const char *);
extern int validate_change (rtx, rtx *, rtx, int);
+extern int validate_change_maybe_volatile (rtx, rtx *, rtx);
extern int insn_invalid_p (rtx);
extern void confirm_change_group (void);
extern int apply_change_group (void);