+struct GTY(()) numbered_tree_d
+{
+ tree t;
+ int num;
+};
+typedef struct numbered_tree_d numbered_tree;
+
+DEF_VEC_O (numbered_tree);
+DEF_VEC_ALLOC_O (numbered_tree, heap);
+
+/* Compare two declarations references by their DECL_UID / sequence number.
+ Called via qsort. */
+
+static int
+compare_decls_by_uid (const void *pa, const void *pb)
+{
+ const numbered_tree *nt_a = ((const numbered_tree *)pa);
+ const numbered_tree *nt_b = ((const numbered_tree *)pb);
+
+ if (DECL_UID (nt_a->t) != DECL_UID (nt_b->t))
+ return DECL_UID (nt_a->t) - DECL_UID (nt_b->t);
+ return nt_a->num - nt_b->num;
+}
+
+/* Called via walk_gimple_stmt / walk_gimple_op by dump_enumerated_decls. */
+static tree
+dump_enumerated_decls_push (tree *tp, int *walk_subtrees, void *data)
+{
+ struct walk_stmt_info *wi = (struct walk_stmt_info *) data;
+ VEC (numbered_tree, heap) **list = (VEC (numbered_tree, heap) **) &wi->info;
+ numbered_tree nt;
+
+ if (!DECL_P (*tp))
+ return NULL_TREE;
+ nt.t = *tp;
+ nt.num = VEC_length (numbered_tree, *list);
+ VEC_safe_push (numbered_tree, heap, *list, &nt);
+ *walk_subtrees = 0;
+ return NULL_TREE;
+}
+
+/* Find all the declarations used by the current function, sort them by uid,
+ and emit the sorted list. Each declaration is tagged with a sequence
+ number indicating when it was found during statement / tree walking,
+ so that TDF_NOUID comparisons of anonymous declarations are still
+ meaningful. Where a declaration was encountered more than once, we
+ emit only the sequence number of the first encounter.
+ FILE is the dump file where to output the list and FLAGS is as in
+ print_generic_expr. */
+void
+dump_enumerated_decls (FILE *file, int flags)
+{
+ basic_block bb;
+ struct walk_stmt_info wi;
+ VEC (numbered_tree, heap) *decl_list = VEC_alloc (numbered_tree, heap, 40);
+
+ memset (&wi, '\0', sizeof (wi));
+ wi.info = (void*) decl_list;
+ FOR_EACH_BB (bb)
+ {
+ gimple_stmt_iterator gsi;
+
+ for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ if (!is_gimple_debug (gsi_stmt (gsi)))
+ walk_gimple_stmt (&gsi, NULL, dump_enumerated_decls_push, &wi);
+ }
+ decl_list = (VEC (numbered_tree, heap) *) wi.info;
+ VEC_qsort (numbered_tree, decl_list, compare_decls_by_uid);
+ if (VEC_length (numbered_tree, decl_list))
+ {
+ unsigned ix;
+ numbered_tree *ntp;
+ tree last = NULL_TREE;
+
+ fprintf (file, "Declarations used by %s, sorted by DECL_UID:\n",
+ current_function_name ());
+ FOR_EACH_VEC_ELT (numbered_tree, decl_list, ix, ntp)
+ {
+ if (ntp->t == last)
+ continue;
+ fprintf (file, "%d: ", ntp->num);
+ print_generic_decl (file, ntp->t, flags);
+ fprintf (file, "\n");
+ last = ntp->t;
+ }
+ }
+ VEC_free (numbered_tree, heap, decl_list);
+}
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