diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 39fca53..d25241f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2013-04-09  Maxim Kuvyrkov  <maxim@kugelworks.com>
+
+	* tree.c (type_hash_lookup, type_hash_add): Make static.
+	* tree.h (type_hash_lookup, type_hash_add): Remove global declarations.
+
 2013-04-09  Richard Biener  <rguenther@suse.de>
 
 	* tree.h (unsave_expr_now): Remove.
diff --git a/gcc/tree.c b/gcc/tree.c
index 65bc15f..078caae 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -6293,7 +6293,7 @@ type_hash_hash (const void *item)
 /* Look in the type hash table for a type isomorphic to TYPE.
    If one is found, return it.  Otherwise return 0.  */
 
-tree
+static tree
 type_hash_lookup (hashval_t hashcode, tree type)
 {
   struct type_hash *h, in;
@@ -6315,7 +6315,7 @@ type_hash_lookup (hashval_t hashcode, tree type)
 /* Add an entry to the type-hash-table
    for a type TYPE whose hash code is HASHCODE.  */
 
-void
+static void
 type_hash_add (hashval_t hashcode, tree type)
 {
   struct type_hash *h;
diff --git a/gcc/tree.h b/gcc/tree.h
index f30361a..aa424c0 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -5928,8 +5928,6 @@ extern hashval_t iterative_hash_host_wide_int (HOST_WIDE_INT, hashval_t);
 extern int compare_tree_int (const_tree, unsigned HOST_WIDE_INT);
 extern int type_list_equal (const_tree, const_tree);
 extern int chain_member (const_tree, const_tree);
-extern tree type_hash_lookup (unsigned int, tree);
-extern void type_hash_add (unsigned int, tree);
 extern int simple_cst_list_equal (const_tree, const_tree);
 extern void dump_tree_statistics (void);
 extern void recompute_tree_invariant_for_addr_expr (tree);