Index: expr.c
===================================================================
--- expr.c	(revision 194517)
+++ expr.c	(working copy)
@@ -4920,7 +4920,12 @@ expand_assignment (tree to, tree from, b
       rtx temp;
 
       push_temp_slots ();
-      if (REG_P (to_rtx) && TYPE_MODE (TREE_TYPE (from)) == BLKmode)
+
+      /* If the source is itself a return value, it still is in a pseudo at
+	 this point so we can move it back to the return register directly.  */
+      if (REG_P (to_rtx)
+	  && TYPE_MODE (TREE_TYPE (from)) == BLKmode
+	  && TREE_CODE (from) != CALL_EXPR)
 	temp = copy_blkmode_to_reg (GET_MODE (to_rtx), from);
       else
 	temp = expand_expr (from, NULL_RTX, GET_MODE (to_rtx), EXPAND_NORMAL);