-/**
- *
- * @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
projects / libfirm / blobdiff