diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 328ee75d25a3..5017eb3f300f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2010-11-01  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* tree.c (build_vector_from_val): Use useless_type_conversion_p.
+
 2010-11-01  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/45250
diff --git a/gcc/tree.c b/gcc/tree.c
index 4de73ee4d2c7..a74603156586 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -1376,8 +1376,8 @@ build_vector_from_val (tree vectype, tree sc)
   if (sc == error_mark_node)
     return sc;
 
-  gcc_assert (lang_hooks.types_compatible_p (TREE_TYPE (sc),
-					     TREE_TYPE (vectype)));
+  gcc_assert (useless_type_conversion_p (TREE_TYPE (sc),
+					 TREE_TYPE (vectype)));
 
   v = VEC_alloc (constructor_elt, gc, nunits);
   for (i = 0; i < nunits; ++i)