extern void add_function_usage_to (rtx, rtx);
extern rtx last_call_insn (void);
extern rtx previous_insn (rtx);
-extern const_rtx const_previous_insn (const_rtx);
extern rtx next_insn (rtx);
-extern const_rtx const_next_insn (const_rtx);
extern rtx prev_nonnote_insn (rtx);
-extern const_rtx const_prev_nonnote_insn (const_rtx);
extern rtx next_nonnote_insn (rtx);
-extern const_rtx const_next_nonnote_insn (const_rtx);
extern rtx prev_real_insn (rtx);
-extern const_rtx const_prev_real_insn (const_rtx);
extern rtx next_real_insn (rtx);
-extern const_rtx const_next_real_insn (const_rtx);
extern rtx prev_active_insn (rtx);
-extern const_rtx const_prev_active_insn (const_rtx);
extern rtx next_active_insn (rtx);
-extern const_rtx const_next_active_insn (const_rtx);
extern int active_insn_p (const_rtx);
extern rtx prev_label (rtx);
-extern const_rtx const_prev_label (const_rtx);
extern rtx next_label (rtx);
-extern const_rtx const_next_label (const_rtx);
extern rtx skip_consecutive_labels (rtx);
extern rtx next_cc0_user (rtx);
extern rtx prev_cc0_setter (rtx);
extern void init_reg_modes_target (void);
extern void init_regs (void);
extern void init_fake_stack_mems (void);
+extern void save_register_info (void);
extern void init_reg_sets (void);
extern void regclass (rtx, int);
extern void reg_scan (rtx, unsigned int);