- vn_reference_t *, bool);
-tree vn_reference_lookup (tree, VEC (tree, gc) *, bool, vn_reference_t *);
-vn_reference_t vn_reference_insert (tree, tree, VEC (tree, gc) *);
-vn_reference_t vn_reference_insert_pieces (VEC (tree, gc) *,
+ vn_reference_t *, vn_lookup_kind);
+tree vn_reference_lookup (tree, tree, vn_lookup_kind, vn_reference_t *);
+vn_reference_t vn_reference_insert (tree, tree, tree);
+vn_reference_t vn_reference_insert_pieces (tree, alias_set_type, tree,