diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 998be31a421b..d6591a22e325 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-25  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* expr.c (emit_block_move_via_loop): Use simplify_gen_binary
+	rather than gen_rtx_PLUS.
+
 2012-10-24  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR bootstrap/55068
diff --git a/gcc/expr.c b/gcc/expr.c
index 448596c3396f..0de2f97b4a9d 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -1464,11 +1464,11 @@ emit_block_move_via_loop (rtx x, rtx y, rtx size,
   emit_label (top_label);
 
   tmp = convert_modes (x_addr_mode, iter_mode, iter, true);
-  x_addr = gen_rtx_PLUS (x_addr_mode, x_addr, tmp);
+  x_addr = simplify_gen_binary (PLUS, x_addr_mode, x_addr, tmp);
 
   if (x_addr_mode != y_addr_mode)
     tmp = convert_modes (y_addr_mode, iter_mode, iter, true);
-  y_addr = gen_rtx_PLUS (y_addr_mode, y_addr, tmp);
+  y_addr = simplify_gen_binary (PLUS, y_addr_mode, y_addr, tmp);
 
   x = change_address (x, QImode, x_addr);
   y = change_address (y, QImode, y_addr);