sh.c (barrier_align): Return 0 when barrier_or_label is null.

	* config/sh/sh.c (barrier_align): Return 0 when barrier_or_label
	is null.

From-SVN: r204865

gcc/ChangeLog

+2013-11-15  Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	* config/sh/sh.c (barrier_align): Return 0 when barrier_or_label
+	is null.
+
 2013-11-15  Aldy Hernandez  <aldyh@redhat.com>
 
 	* Makefile.in (C_COMMON_OBJS): Depend on c-cilkplus.o.

gcc/config/sh/sh.c

@@ -5777,6 +5777,9 @@ barrier_align (rtx barrier_or_label)
 {
   rtx next, pat;
 
+  if (! barrier_or_label)
+    return 0;
+
   if (LABEL_P (barrier_or_label)
       && NEXT_INSN (barrier_or_label)
       && JUMP_TABLE_DATA_P (NEXT_INSN (barrier_or_label)))