3 * File name: ir/tr/typegmod.h
4 * Purpose: Functionality to modify the type graph.
5 * Author: Goetz Lindenmaier
9 * Copyright: (c) 2001-2003 Universität Karlsruhe
10 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
22 * This module supplies routines that support changing the type graph.
26 * replaces one type by the other.
28 * Old type is replaced by new_type. All references to old_type
29 * now point to new_type. The memory for the old type is destroyed,
30 * but still used. Therefore it is not freed.
31 * All referenced to this memory will be lost after a certain while.
32 * An exception is the list of types in irp (irprog.h).
33 * In the future there might be a routine to recover the memory, but
34 * this will be at considerable runtime cost.
36 * @param old_type - The old type that shall be replaced by the new type.
37 * @param new_type - The new type that will replace old_type.
40 INLINE void exchange_types(type *old_type, type *new_type);
43 * skip id types until a useful type is reached.
45 * @param tp - A type of arbitrary kind.
48 * tp if it is not an id type.
49 * If tp is an id type returns the real type it stands for.
51 INLINE type *skip_tid(type *tp);
53 # endif /*_TYPEGMOD_H_ */