X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fana%2Fheight.c;h=f7a813a35e5bb2d0acbaa3caf834c50b1b6efce7;hb=7e8388fa7996ff182d3aa4e0cdd41b27bed4982f;hp=c067adabc95d816be8e5c604b4e7f00b7f4cdbec;hpb=1bebdda91969b4d0d295d01886b66ec47e4b8cc4;p=libfirm

diff --git a/ir/ana/height.c b/ir/ana/height.c
index c067adabc..f7a813a35 100644
--- a/ir/ana/height.c
+++ b/ir/ana/height.c
@@ -1,15 +1,29 @@
 /*
- * 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) 1995-2008 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
@@ -38,9 +52,10 @@ typedef struct {
 	unsigned visited;
 } irn_height_t;
 
-static void *irn_height_init(ir_phase *ph, ir_node *irn, void *data)
+static void *irn_height_init(ir_phase *ph, const 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;
 }
@@ -71,9 +86,11 @@ static int search(heights_t *h, const ir_node *curr, const ir_node *tgt)
 	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);
@@ -140,7 +157,7 @@ static unsigned compute_height(heights_t *h, ir_node *irn, const ir_node *bl)
 	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);
 		}
@@ -151,6 +168,7 @@ static unsigned compute_height(heights_t *h, ir_node *irn, const ir_node *bl)
 	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);