var-tracking.c (add_stores): Return instead of asserting if old and new values…

var-tracking.c (add_stores): Return instead of asserting if old and new values for conditional store are the...

	* var-tracking.c (add_stores): Return instead of asserting if old
	and new values for conditional store are the same.

From-SVN: r212178

gcc/ChangeLog

+2014-06-30  Joseph Myers  <joseph@codesourcery.com>
+
+	* var-tracking.c (add_stores): Return instead of asserting if old
+	and new values for conditional store are the same.
+
 2014-06-30  Richard Henderson  <rth@redhat.com>
 
 	PR rtl-opt/61608

gcc/var-tracking.c

@@ -6016,7 +6016,8 @@ add_stores (rtx loc, const_rtx expr, void *cuip)
     {
       cselib_val *oval = cselib_lookup (oloc, GET_MODE (oloc), 0, VOIDmode);
 
-      gcc_assert (oval != v);
+      if (oval == v)
+	return;
       gcc_assert (REG_P (oloc) || MEM_P (oloc));
 
       if (oval && !cselib_preserved_value_p (oval))