optabs.c (expand_binop): Make sure the first subword's result gets stored.

* optabs.c (expand_binop): Make sure the first subword's result
gets stored.

From-SVN: r96921

gcc/ChangeLog

+2005-03-23  DJ Delorie  <dj@redhat.com>
+
+	* optabs.c (expand_binop): Make sure the first subword's result
+	gets stored.
+
 2005-03-23  Joseph S. Myers  <joseph@codesourcery.com>
 
 	* c-common.c (c_common_truthvalue_conversion): Adjust comment.

gcc/optabs.c

@@ -1534,6 +1534,11 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1,
 		}
 	      emit_move_insn (target_piece, newx);
 	    }
+	  else
+	    {
+	      if (x != target_piece)
+		emit_move_insn (target_piece, x);
+	    }
 
 	  carry_in = carry_out;
 	}