extern int count_occurrences (rtx, rtx, int);
extern int reg_referenced_p (rtx, rtx);
extern int reg_used_between_p (rtx, rtx, rtx);
-extern int reg_referenced_between_p (rtx, rtx, rtx);
extern int reg_set_between_p (rtx, rtx, rtx);
extern int regs_set_between_p (rtx, rtx, rtx);
extern int commutative_operand_precedence (rtx);
extern int swap_commutative_operands_p (rtx, rtx);
extern int modified_between_p (rtx, rtx, rtx);
extern int no_labels_between_p (rtx, rtx);
-extern int no_jumps_between_p (rtx, rtx);
extern int modified_in_p (rtx, rtx);
-extern int insn_dependent_p (rtx, rtx);
extern int reg_set_p (rtx, rtx);
extern rtx single_set_2 (rtx, rtx);
extern int multiple_sets (rtx);