removed stdint.h again -- mallon soll die typen halt ausschreiben, die ganze libfirm...

[libfirm] / ir / opt / cfopt.c

diff --git a/ir/opt/cfopt.c b/ir/opt/cfopt.c
index 9c5e95e..f3a5712 100644 (file)
--- a/ir/opt/cfopt.c
+++ b/ir/opt/cfopt.c
@@ -1,25 +1,32 @@
 /*
- * Project:     libFIRM
- * File name:   ir/opt/cfopt.c
- * Purpose:     control flow optimizations
- * Author:
- * Created:
- * CVS-ID:      $Id$
- * Copyright:   (c) 1998-2004 Universität Karlsruhe
- * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ * 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
+ * @brief   Control flow optimizations.
+ * @author  Goetz Lindenmaier, Michael Beck, Sebastian Hack
+ * @version $Id$
+ */
 #ifdef HAVE_CONFIG_H
 # include "config.h"
 #endif
 
-#ifdef HAVE_MALLOC_H
-# include <malloc.h>
-#endif
-#ifdef HAVE_ALLOCA_H
-# include <alloca.h>
-#endif
-
 #include <assert.h>
 
 #include "plist.h"
@@ -755,10 +762,15 @@ void optimize_cf(ir_graph *irg) {
 
        /* Use block visited flag to mark non-empty blocks. */
        inc_irg_block_visited(irg);
+       set_using_block_visited(irg);
+       set_using_irn_link(irg);
 
        list = plist_new();
        irg_walk(end, merge_blocks, collect_nodes, list);
 
+       clear_using_block_visited(irg);
+       clear_using_irn_link(irg);
+
        /* handle all collected switch-Conds */
        foreach_plist(list, el) {
                cond = plist_element_get_value(el);
@@ -775,6 +787,7 @@ void optimize_cf(ir_graph *irg) {
        if (n > 0)
                NEW_ARR_A(ir_node *, in, n);
        inc_irg_visited(irg);
+       set_using_visited(irg);
 
        /* fix the keep alive */
        for (i = j = 0; i < n; i++) {
@@ -802,6 +815,9 @@ void optimize_cf(ir_graph *irg) {
        }
        if (j != n)
                set_End_keepalives(end, j, in);
+
+       clear_using_visited(irg);
+
        /* the verifier doesn't work yet with floating nodes */
        if (get_irg_pinned(irg) == op_pin_state_pinned) {
                /* after optimize_cf(), only Bad data flow may remain. */