+ 29.1.2002 Goetz
+ New directory: ana for analyses. Adapted configure/makefiles
+ implemented irout: backedges. Added one field to ir_graph, one to ir_node.
+ Implemented state management for irgraphs: see irgraph.h.
+ Must now call finalize_cons() after graph construction!!
+
+ 24.1.2002 Goetz
+ Procedure global cse.
+ Flag pinned in irop, irgraph.
+ Global cse in irop, setting the irgraph flag.
+ Example programs: Endless_loop.c. global_cse.c.
+ Adapted irdump.
+
+ 23.1.2002 Goetz
+ Implemented support for endless loops:
+ Adapted End node.
+ Adapted Phi constructors so that memory phis are added.
+ Adapted Cond optimization: add block to End.
+ Adapted dead node elimination: compation of Ends predecessors
+ Adapted inlineing: remember keepalives of inlined graph.
+ Added informative strings to asserts in irvrfy.
+
+ 21.1.2002 Goetz
+ Added volatile flag to entity, order flag to array.
+ Added a set of assertions.
+
+ 17.1.2002 Goetz
+ Added access function set_class_members()
+
+ 21.12.2001 Goetz
+ Asserts in irvrfy that verify the mode of Proj nodes. For Start,
+ Call, Return they check the corresponding function type! Corrected
+ bugs in testprograms.
+ Some asserts for legal values of 'pos' arguments in type/entity
+ access routines.
+
+ 20.12.2001 Goetz
+ Some access routines for visited flags in entity.h, irnode.h,
+ bug in oo_program_example.
+
+ 17.12.2001 Boris
+ Removed all obsolete Makefiles
+
+ 10.12.2001 Goetz
+ Added support for constant entities. A new example program illustrates
+ their use. Extended dumper routines to dump constant values.
+
+ 30.11.2001 Goetz
+ Extendend "comfortable" construction interface by some methods
+ serving as simple shortcuts.
+
+ 30.11.2001 Goetz
+ Added a class type to irgs. This class type is to be used as owner
+ for local entities of the procedure. This are all entities allocated
+ for each execution of the procedure.
+ The class type is allocated automatically by new_ir_graph(). Access
+ routines to get this type are in irgraph.h.
+ We chose a class type as this allows to represent "inner" procedures
+ as, e.g., in Pascal.
+ Adapted array-stack-example.
+
+ 29.11.2001 Goetz
+ irdump outputs nodeids instead of pointers for labels of nodes.
+ With a preprocessor flag in common.h this can be turned off.
+
+ 28.11.2001 Boris
+ Added an Id tag to every .c and .h file
+
+ 20.11.2001 Goetz
+ Changed SSA constuction for exception control flow.
+ If PRECISE_EXC_CONTEXT is used Phi nodes will use the values
+ valid when the execption operation was allocated. This increases
+ the memory consuption of the construction algorithm by
+ n_loc * #fragile_ops.
+
+ 19.11.2001 Goetz
+ Added method to replace in array of a node in irnode.c/h
+ Added functionality to irgmod:
+ * collect all Phi nodes as link-list in the Blocks link field
+ * collect all Proj nodes as link-list in node producing the tuple.
+ * Seperate a Block into two
+ Added inlining transformation in irgopt.h
+ Improved output of dump_ir_block_graph. Now also dumps nodes that
+ don't belong to a block.
+ Added flag opt_unreachable_code, opt_inline.
+ Changed irvrfy so that it accepts nodes with Bad predecessors.
+
19.10.2001 Boris
renamed get_type_nameid to get_type_ident