X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftr%2Ftypegmod.c;h=572dea31a80262e6165f5733128fb8ff38491d9b;hb=86e761ab84e9d929821dd977f6395cb21b89cde1;hp=4a44ef97ee9ef524c4f72627cefd2b235e6eee7a;hpb=2da89aec2e7d54d70940cccfa82f74c83e5221eb;p=libfirm

diff --git a/ir/tr/typegmod.c b/ir/tr/typegmod.c
index 4a44ef97e..572dea31a 100644
--- a/ir/tr/typegmod.c
+++ b/ir/tr/typegmod.c
@@ -1,42 +1,67 @@
-/* Copyright (C) 2001 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Goetz Lindenmaier
-**
-*/
+/*
+ * 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.
+ */
 
-# include "typegmod_t.h"
-# include "type_t.h"
-# include "tpop_t.h"
-# include "irmode.h"
+/**
+ * @file    typegmod.c
+ * @brief   Functionality to modify the type graph.
+ * @author  Goetz Lindenmaier, Michael Beck
+ * @version $Id$
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 
-inline void exchange_types(type *old_type, type *new_type) {
-  int i;
-  /* Deallocate datastructures not directly contained in the
-     old type.  We must do this now as it is the latest point
-     where we know the original kind of type.
-     */
-  free_type_attrs(old_type);
+#include "type_t.h"
+#include "tpop_t.h"
+#include "irmode.h"
 
-  /* @@@@
-     Things to deal with:
-     * After exchange_types the type has two entries in the list of
-       all types in irp.  So far this is fine for the walker.
-       Maybe it's better to remove the id entry and shrink the list.
-       Does this conflict with the walker?  Might a type be left out
-       during the walk?
-     * Deallocation:  if the Id is removed from the list it will eventualle
-       disappear in a memory leak.  When is impossible to determine so we
-       need to hold it in a seperate list for deallocation.
-  */
+void exchange_types(ir_type *old_type, ir_type *new_type) {
+	unsigned flags = old_type->flags & (tf_frame_type | tf_value_param_type | tf_global_type | tf_tls_type);
+	/* Deallocate datastructures not directly contained in the
+	   old type.  We must do this now as it is the latest point
+	   where we know the original kind of type.
+	   */
+	free_type_attrs(old_type);
 
-  /* Exchange the types */
-  old_type->type_op = type_id;
-  old_type->mode = (ir_mode *) new_type;
+	/* @@@@
+	   Things to deal with:
+	   * After exchange_types the type has two entries in the list of
+	     all types in irp.  So far this is fine for the walker.
+	     Maybe it's better to remove the id entry and shrink the list.
+	     Does this conflict with the walker?  Might a type be left out
+	     during the walk?
+	   * Deallocation:  if the Id is removed from the list it will eventually
+	     disappear in a memory leak.  When is impossible to determine so we
+	     need to hold it in a separate list for deallocation.
+	*/
+
+	/* Exchange the types */
+	old_type->type_op = type_id;
+	old_type->mode = (ir_mode *) new_type;
+	/* ensure that the frame, value param, global and tls flags
+	   are set right if these types are exchanged */
+	new_type->flags |= flags;
 }
 
-inline type *skip_tid(type *tp) {
-  while (tp->type_op == type_id)
-    tp = (type *) tp->mode;
-  return tp;
+ir_type *skip_tid(ir_type *tp) {
+	/* @@@ implement the self cycle killing trick of skip_id(ir_node *) */
+	while (tp->type_op == type_id)
+		tp = (ir_type *) tp->mode;
+	return tp;
 }