/*
- * Project: libFIRM
- * File name: ir/ana/height.c
- * Purpose: Compute heights of nodes inside basic blocks
- * Author: Sebastian Hack
- * Modified by:
- * Created: 19.04.2006
- * CVS-ID: $Id$
- * Copyright: (c) 2006 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 Compute heights of nodes inside basic blocks
+ * @author Sebastian Hack
+ * @date 19.04.2006
+ * @version $Id$
+ */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
#include <stdlib.h>
#include <stdio.h>
typedef struct _heights_t heights_t;
struct _heights_t {
- phase_t ph;
+ ir_phase ph;
unsigned visited;
void *dump_handle;
};
unsigned visited;
} irn_height_t;
-static void *irn_height_init(phase_t *ph, ir_node *irn, void *data)
+static void *irn_height_init(ir_phase *ph, ir_node *irn, void *data)
{
irn_height_t *h = data ? data : phase_alloc(ph, sizeof(h[0]));
+ (void)irn;
memset(h, 0, sizeof(h[0]));
return h;
}
if(curr == tgt)
return 1;
- /* If we are in another block we won't find our target. */
+ /* If we are in another block or at a phi we won't find our target. */
if(get_nodes_block(curr) != get_nodes_block(tgt))
return 0;
+ if(is_Phi(curr))
+ return 0;
/* Check, if we have already been here. Coming more often won't help :-) */
h_curr = phase_get_irn_data(&h->ph, curr);
foreach_out_edge(irn, edge) {
ir_node *dep = get_edge_src_irn(edge);
- if(!is_Block(dep) && get_nodes_block(dep) == bl) {
+ if(!is_Block(dep) && !is_Phi(dep) && get_nodes_block(dep) == bl) {
unsigned dep_height = compute_height(h, dep, bl);
ih->height = MAX(ih->height, dep_height);
}
foreach_out_edge_kind(irn, edge, EDGE_KIND_DEP) {
ir_node *dep = get_edge_src_irn(edge);
+ assert(!is_Phi(dep));
if(!is_Block(dep) && get_nodes_block(dep) == bl) {
unsigned dep_height = compute_height(h, dep, bl);
ih->height = MAX(ih->height, dep_height);
heights_t *heights_new(ir_graph *irg)
{
heights_t *res = xmalloc(sizeof(res[0]));
- phase_init(&res->ph, "heights", irg, PHASE_DEFAULT_GROWTH, irn_height_init);
+ phase_init(&res->ph, "heights", irg, PHASE_DEFAULT_GROWTH, irn_height_init, NULL);
res->dump_handle = dump_add_node_info_callback(height_dump_cb, res);
heights_recompute(res);