diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2cbddc7f0393..af3a58e88ad5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2007-07-03  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* ddg.c (check_sccs): Define only if ENABLE_CHECKING is
+	defined.
+
 2007-07-03  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
 
 	PR target/28307
diff --git a/gcc/ddg.c b/gcc/ddg.c
index 982280654607..31910b3a4623 100644
--- a/gcc/ddg.c
+++ b/gcc/ddg.c
@@ -870,6 +870,7 @@ order_sccs (ddg_all_sccs_ptr g)
 	 (int (*) (const void *, const void *)) compare_sccs);
 }
 
+#ifdef ENABLE_CHECKING
 /* Check that every node in SCCS belongs to exactly one strongly connected
    component and that no element of SCCS is empty.  */
 static void
@@ -889,7 +890,7 @@ check_sccs (ddg_all_sccs_ptr sccs, int num_nodes)
     }
   sbitmap_free (tmp);
 }
-
+#endif
 
 /* Perform the Strongly Connected Components decomposing algorithm on the
    DDG and return DDG_ALL_SCCS structure that contains them.  */