+ 6.9.00 Goetz
+ Added irdump routine dump_all_types.
+ Did changes to irprog, type, typewalk to achieve this.
+ typewalk needs to walk along members, sub and supertypes, this
+ is still missing! irdump then needs to output these edges.
+
+======================================================================
+==================== New version: 0.2.5 ==============================
+======================================================================
+
+ 3.9.00 Goetz
+ Made new Version: 0.2.5
+
+ 15.8.2000 Goetz until 3.9.00
+ Separated irnode.h and many others into two files: one public
+ one private.
+ Added funcionality to extract headers for lib.
+
+ 23.8.2000 Goetz
+ type_dump also dumps irg->ent
+ if_example: corrected nr of locals
+
+ 16.8.2000 Goetz
+ irgopt: Correct copy of self pointer in start block.
+ irgopt: Correct treatment of loops: pre function in walker
+ breaks all possible loops in Phi and Block nodes.
+ irr_loop_example: wrong Return statement
+ Now I fixed all but one error: in memory_example.
+ This error showed a conceptual problem, so I wrote
+ a slightly different algorithm. This now runs for
+ all testprograms.
+ dead_node_example: cse is buggy!! merges start and the
+ following block!
+
+ 15.8.2000 Goetz
+ looking at bug in dead_node_elimination.
+ Following fixes:
+ irnode: all get_..._arr functions changed
+ ircons: new_r_Block: set matured flag.
+ ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
+ adapted call_str_example to new concepts.
+
+ 2.8.2000 Goetz
+ Implemented simpler Phi construction algorithm that constructs
+ correct code for three_cfpred_example in ircons. This algorithm
+ generates more Id nodes than the original algorithm and therefore
+ is less effective.
+ Also made some changes to optimizations of Not.
+
+ 31.7.2000 Chris
+ Fixed a bug, caused by the recursive use in type.h and entity.h.
+ Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
+ Fixed a problem in if_while testprogram, so it now works.
+
+ 20.7.2000 Goetz
+ Fixed bug in optimize(). Returned Null instead n if
+ get_optimize() == false.
+
+ 19.7.2000 Christian
+ Added some access routines in type.[hc]. Solved a recursive definition
+ of type_class struct, entity struct and type union.
+
+ 18.7.2000 Goetz
+ Separated entity header into pure functional header and header
+ with data types.
+
+ Goetz
+ ... a bunch small changes not documented
+
+ 12.7.2000 Goetz
+ Changed output of oo_prog_example: now uses the internal list
+ of all irgs. Had to implement some of the access routines for
+ that. Also fixed a bug in irdump. Main routines did not use
+ current_ir_graph properly.
+
+ 12.7.2000 Goetz
+ Implemented some missing parts in irgopt.
+ Added field irg to entity. Only valid if entity is a method.
+ Had to resove a cyclic de[endency between irgraph.h and entity.h
+ for this.
+ Added fields sub and super to type_class for inheritance.
+ Added field main_irg to irprog.
+
7.7.2000 Chris
Fixed some bugs in irgopt.c
Added some missing 'get_new_node' methods, so the new obstack contains
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