-extern int eq_poly_dr_pair_p (const void *, const void *);
-extern hashval_t hash_poly_dr_pair_p (const void *);
+extern int eq_poly_ddr_p (const void *, const void *);
+extern hashval_t hash_poly_ddr_p (const void *);
+extern void free_poly_ddr (void *);
+extern void dot_deps (scop_p);
+extern void dot_deps_stmt (scop_p);
+extern void print_pddr (FILE *, poly_ddr_p);
+extern void debug_pddr (poly_ddr_p);