extern int reg_overlap_mentioned_p (const_rtx, const_rtx);
extern const_rtx set_of (const_rtx, const_rtx);
extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *);
-extern void const_note_stores (const_rtx, void (*) (const_rtx, const_rtx, const void *), const void *);
extern void note_uses (rtx *, void (*) (rtx *, void *), void *);
extern int dead_or_set_p (const_rtx, const_rtx);
extern int dead_or_set_regno_p (const_rtx, unsigned int);
extern bool expensive_function_p (int);
/* In cfgexpand.c */
extern void add_reg_br_prob_note (rtx last, int probability);
-/* In tracer.c */
-extern void tracer (void);
/* In var-tracking.c */
extern unsigned int variable_tracking_main (void);