extern rtx copy_rtx_if_shared PROTO((rtx));
extern rtx copy_most_rtx PROTO((rtx, rtx));
extern rtx shallow_copy_rtx PROTO((rtx));
+extern int rtx_equal_p PROTO((rtx, rtx));
extern rtvec gen_rtvec_v PROTO((int, rtx *));
extern rtx gen_reg_rtx PROTO((enum machine_mode));
extern rtx gen_label_rtx PROTO((void));
extern int reg_overlap_mentioned_p PROTO((rtx, rtx));
extern void note_stores PROTO((rtx, void (*)(rtx, rtx, void *), void *));
extern rtx reg_set_last PROTO((rtx, rtx));
-extern int rtx_equal_p PROTO((rtx, rtx));
extern int dead_or_set_p PROTO((rtx, rtx));
extern int dead_or_set_regno_p PROTO((rtx, int));
extern rtx find_reg_note PROTO((rtx, enum reg_note, rtx));