X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Ftropt.h;h=2d0e9a658a1ee10658e24c9dcfbf01414820518f;hb=77c348bef494a5d4e1fbf754957884de5c0bfe99;hp=e65cbc363f6b800acdc8658ce9b7ff85f4cfda0d;hpb=9625e38fc84983dde86531443d2a54d719925e6f;p=libfirm

diff --git a/ir/opt/tropt.h b/ir/opt/tropt.h
index e65cbc363..2d0e9a658 100644
--- a/ir/opt/tropt.h
+++ b/ir/opt/tropt.h
@@ -1,91 +1,30 @@
-/**
- *
- * @file irsimpeltype.h
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
- * Project:     libFIRM
- * File name:   ir/opt/tropt.h
- * Purpose:     Optimize the type representation.
- * Author:      Goetz Lindenmaier
- * Modified by:
- * Created:     20.4.2005
- * CVS-ID:      $Id$
- * Copyright:   (c) 2005 Universität Karlsruhe
- * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ * This file is part of libFirm.
  *
- * Perform optimizations of the type representation.
+ * 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.
  */
 
-#ifndef _TROPT_H_
-#define _TROPT_H_
-
-#include "irnode.h"
-#include "irgraph.h"
-#include "type.h"
-
-/** This is the type for a method, that returns a pointer type to
- *  tp.  This is needed in the normalization. */
-typedef type *(*gen_pointer_type_to_func)(type *tp);
-
-/**  Insert Casts so that class type casts conform exactly with the type hierarchy.
- *
- *  Formulated in Java, this achieves the following:
- *
- *  For a class hierarchy
- *    class A {}
- *    class B extends A {}
- *    class C extends B {}
- *  we transforms a cast
- *    (A)new C()
- *  to
- *    (A)((B)new C()).
- *
- *  The algorithm works for Casts with class types, but also for Casts
- *  with all pointer types that point (over several indirections,
- *  i.e. ***A) to a class type.  Normalizes all graphs.  Computes type
- *  information (@see irtypeinfo.h) if not available.
- *  Invalidates trout information as new casts are generated.
- *
- *  @param gppt_fct A function that returns a pointer type that points
- *    to the type given as argument.  If this parameter is NULL, a default
- *    function is used that either uses trout information or performs a O(n)
- *    search to find an existing pointer type.  If it can not find a type,
- *    generates a pointer type with mode_P_mach and suffix "cc_ptr_tp".
- */
-void normalize_irp_class_casts(gen_pointer_type_to_func gppt_fct);
-
-
-/**  Insert Casts so that class type casts conform exactly with the type hierarchy
- *   in given graph.
- *
- *   For more details see @normalize_irp_class_casts().
- *
- *  This transformation requires that type information is computed. @see irtypeinfo.h.
+/**
+ * @file
+ * @brief   Perform optimizations of the type representation.
+ * @version $Id: $
  */
-void normalize_irg_class_casts(ir_graph *irg, gen_pointer_type_to_func gppt_fct);
+#ifndef FIRM_OPT_TROPT_H
+#define FIRM_OPT_TROPT_H
 
+void firm_init_class_casts_opt(void);
 
-/** Optimize casting between class types.
- *
- *    class A { m(); }
- *    class B extends A { }
- *    class C extends B {}
- *  Performs the following transformations:
- *    C c = (C)(B)(A)(B)new C()  --> C c = (C)(B)newC() --> C c = new C()
- *    (Optimizing downcasts as A a = (A)(B)(new A()) --> A a = new A() can
- *     be suppressed by setting flag opt_suppress_downcast_optimization.
- *     Downcasting A to B might cause an exception.  It is not clear
- *     whether this is modeled by the Firm Cast node, as it has no exception
- *     outputs.);
- *  If there is inh_m() that overwrites m() in B:
- *    ((A) new B()).m()  --> (new B()).inh_m()
- *  Phi((A)x, (A)y)  --> (A) Phi (x, y)  if (A) is an upcast.
- *
- *  Computes type information if not available. @see irtypeinfo.h.
- *  Typeinformation is valid after optimization.
- *  Invalidates trout information.
- */
-void optimize_class_casts(void);
-
-#endif /* _TROPT_H_ */
+#endif