4 * (C) 2001 by Universitaet Karlsruhe
18 * This module supplies routines that support changing the type graph.
22 * replaces one type by the other.
24 * Old type is replaced by new_type. All references to old_type
25 * now point to new_type. The memory for the old type is destroyed,
26 * but still used. Therefore it is not freed.
27 * All referenced to this memory will be lost after a certain while.
28 * An exception is the list of types in irp (irprog.h).
29 * In the future there might be a routine to recover the memory, but
30 * this will be at considerable runtime cost.
32 * @param old_type - The old type that shall be replaced by the new type.
33 * @param new_type - The new type that will replace old_type.
36 INLINE void exchange_types(type *old_type, type *new_type);
39 * skip id types until a useful type is reached.
41 * @param tp - A type of arbitrary kind.
44 * tp if it is not an id type.
45 * If tp is an id type returns the real type it stands for.
47 INLINE type *skip_tid(type *tp);
49 # endif /*_TYPEGMOD_H_ */