+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
/**
*
* @file strength_red.c
* Created: 22.8.2004
* CVS-ID: $Id$
* Copyright: (c) 2004 Universität Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
* @verbatim
*
* init
- * /|\
+ * ^
* |
* +-- Phi
- * | /|\
+ * | ^
* | |
* +-->op
*
/* check if a iteration variable be reduced.*/
int reduced = 0;
- if (get_irn_op(itervar_phi) != op_Phi)
+ if (! is_Phi(itervar_phi))
return;
- /* A candidate is found.*/
+
+ /* A potential candidate is found.*/
ivi.itervar_phi = itervar_phi;
- /* It musss be a induction variable.*/
+ /* check if it's a induction variable.*/
if (is_induction_variable(&ivi)) {
int i, op_out;