/*
* Project: libFIRM
* File name: ir/ana/rta.c
- * Purpose: Intraprozedural analyses to improve the call graph estimate.
+ * Purpose: Interprocedural analysis to improve the call graph estimate.
* Author: Florian
* Modified by:
* Created: 09.06.2002
- * CVS-ID: $$
+ * CVS-ID: $Id$
* Copyright: (c) 1999-2004 Universität Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ * Licence: This file is protected by GPL - GNU GENERAL PUBLIC LICENSE.
*/
-/**
- * Intraprozedurale Analyse zur Abschätzung der Aufrufrelation. Es
- * die Menge der instantiierten Klassen bestimmt, und daraus existierende Methoden
- * bestimmt.
- */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
#include "rta.h"
-# define TRUE 1
-# define FALSE 0
+#include <stdlib.h>
-/* # define RTA_SET */
-# ifdef RTA_SET
-typedef struct rta_set_elt
-{
- struct rta_set_elt *_next;
- void *_obj;
-} rta_set_elt_t;
+#include "irnode_t.h"
+#include "irprog_t.h"
+#include "irgraph_t.h"
-typedef struct rta_set
-{
- rta_set_elt_t *_list;
-} rta_set_t;
+#include "eset.h"
+#include "irgwalk.h"
+#include "irgmod.h"
+#include "typewalk.h"
+#include "irvrfy.h"
+#include "trvrfy.h"
+
+# ifndef TRUE
+# define TRUE 1
+# define FALSE 0
+# endif /* not defined TRUE */
-# define SET_T rta_set_t
+/* flags */
+static int verbose = 0;
-# else /* if defined RTA_SET */
-# define SET_T eset
-# define new_set eset_create
-# define delete_set(SET) eset_destroy(SET)
-# define set_insert(SET,ELT) eset_insert(SET,ELT)
-# define set_contains(SET,ELT) eset_contains(SET,ELT)
-# endif /* defined RTA_SET */
-static SET_T *_live_classes = NULL;
-static SET_T *_live_fields = NULL;
-static SET_T *_called_methods = NULL;
+/* base data */
+static eset *_live_classes = NULL;
/* cache computed results */
-static SET_T *_live_graphs = NULL;
-static SET_T *_dead_graphs = NULL;
+static eset *_live_graphs = NULL;
-# ifdef RTA_SET
-/* Reinvent the wheel, err, set. */
-/* eset uses obstacks, which fucks up the graph somehow */
-static rta_set_t *new_set ()
+/**
+ Given a method, find the firm graph that implements that method.
+*/
+static ir_graph *get_implementing_graph (entity *method)
{
- rta_set_t *set = (rta_set_t*) xmalloc (sizeof (rta_set_t));
+#if 0
+ ir_graph *graph = get_entity_irg ((entity*) method);
+
+ /* Search upwards in the overwrites graph. */
+ /* GL: this will not work for multiple inheritance */
+ if (NULL == graph) {
+ int i;
+ int n_over = get_entity_n_overwrites ((entity*) method);
+
+ for (i = 0; (NULL == graph) && (i < n_over); i ++) {
+ entity *over = get_entity_overwrites ((entity*) method, i);
+ graph = get_implementing_graph (over);
+ }
+ }
+
+ /* GL this is not valid in our remove irg algorithm ... which we removed by now ... */
+ assert(get_entity_peculiarity(method) == peculiarity_description
+ || graph == get_entity_irg(get_SymConst_entity(get_atomic_ent_value(method))));
+
+ /* we *must* always return a graph != NULL, *except* when we're used
+ inside remove_irg or force_description */
+ /* assert (graph && "no graph"); */
- set->_list = NULL;
+ return (graph);
+#else
+ ir_graph *graph = NULL;
+
+ if (get_entity_peculiarity(method) != peculiarity_description)
+ graph = get_entity_irg(get_SymConst_entity(get_atomic_ent_value(method)));
- return (set);
+ return graph;
+#endif
}
-static void delete_set (rta_set_t *set)
+static int add_graph (ir_graph *graph)
{
- rta_set_elt_t *elt = set->_list;
-
- while (NULL != elt) {
- rta_set_elt_t *old = elt;
- elt = elt->_next;
+ if (!eset_contains (_live_graphs, graph)) {
+ if (verbose > 1) {
+ fprintf(stdout, "RTA: new graph of ");
+ DDMEO(get_irg_entity (graph));
+ }
- old->_next = NULL;
- old->_obj = NULL;
- free (old);
+ eset_insert (_live_graphs, graph);
+ return (TRUE);
}
- free (set);
+ return (FALSE);
}
-static void set_insert (rta_set_t *set, void *obj)
+static int add_class (ir_type *clazz)
{
- rta_set_elt_t *elt = (rta_set_elt_t*) xmalloc (sizeof (rta_set_elt_t));
+ if (!eset_contains (_live_classes, clazz)) {
+ if (verbose > 1) {
+ fprintf(stdout, "RTA: new class: ");
+ DDMT(clazz);
+ }
+
+ eset_insert (_live_classes, clazz);
+ return (TRUE);
+ }
- elt->_obj = obj;
- elt->_next = set->_list;
- set->_list = elt;
+ return (FALSE);
}
-static int set_contains (rta_set_t *set, void *obj)
+/** Given an entity, add all implementing graphs that belong to live classes
+ * to _live_graphs.
+ *
+ * Iff additions occurred, return TRUE, else FALSE.
+*/
+static int add_implementing_graphs (entity *method)
{
- rta_set_elt_t *elt = set->_list;
+ int i;
+ int n_over = get_entity_n_overwrittenby (method);
+ ir_graph *graph = get_entity_irg (method);
+ int change = FALSE;
+
+ if (NULL == graph) {
+ graph = get_implementing_graph (method);
+ }
- while (NULL != elt) {
- if (elt->_obj == obj) {
- return (TRUE);
+ if (verbose > 1) {
+ fprintf(stdout, "RTA: new call to ");
+ DDMEO(method);
+ }
+
+ if (rta_is_alive_class (get_entity_owner (method))) {
+ if (NULL != graph) {
+ change = add_graph (graph);
}
+ }
- elt = elt->_next;
+ for (i = 0; i < n_over; i ++) {
+ entity *over = get_entity_overwrittenby (method, i);
+ change |= add_implementing_graphs (over);
}
- return (FALSE);
+ return (change);
}
-# endif /* defined RTA_SET */
-
-/* now the meat */
+/** Enter all method accesses and all class allocations into
+ * our tables.
+ *
+ * Set *(int*)env to true iff (possibly) new graphs have been found.
+ */
static void rta_act (ir_node *node, void *env)
{
+ int *change = (int*) env;
+
opcode op = get_irn_opcode (node);
- if (iro_Call == op) {
+ if (iro_Call == op) { /* CALL */
entity *ent = NULL;
ir_node *ptr = get_Call_ptr (node);
- // test: ptr.op == Const
+ /* CALL SEL */
if (iro_Sel == get_irn_opcode (ptr)) {
ent = get_Sel_entity (ptr);
- set_insert (_called_methods, ent);
+ *change |= add_implementing_graphs (ent);
+
+ /* CALL SYMCONST */
+ } else if (iro_SymConst == get_irn_opcode (ptr)) {
+ if (get_SymConst_kind(ptr) == symconst_addr_ent) {
+ ir_graph *graph;
+
+ ent = get_SymConst_entity (ptr);
+ graph = get_entity_irg (ent);
+ if (graph) {
+ *change |= add_graph (graph);
+ } else {
+ /* it's an external allocated thing. */
+ }
+ } else if (get_SymConst_kind(ptr) == symconst_addr_name) {
+ /* Entities of kind addr_name may not be allocated in this compilation unit.
+ If so, the frontend built faulty Firm. So just ignore. */
+ /* if (get_SymConst_name(ptr) != new_id_from_str("iro_Catch"))
+ assert (ent && "couldn't determine entity of call to SymConst of kind addr_name."); */
+ } else {
+ /* other symconst. */
+ assert(0 && "This SymConst can not be an address for a method call.");
+ }
+
+ /* STRANGE */
+ } else {
+ DDMN(ptr);
+ assert(0 && "Unexpected address expression: can not analyse, therefore can not do correct rta!");
}
- if (ent) {
- }
- } else if (iro_Load == op) {
- ir_node *ptr = get_Load_ptr (node);
- entity *ent = NULL;
+ } else if (iro_Alloc == op) { /* ALLOC */
+ ir_type *type = get_Alloc_type (node);
- if (iro_Sel == get_irn_opcode (ptr)) {
- ent = get_Sel_entity (ptr);
- }
- if (ent) {
- set_insert (_live_fields, ent);
- }
- } else if (iro_Store == op) {
- ir_node *ptr = get_Store_ptr (node);
- entity *ent = NULL;
-
- if (iro_Sel == get_irn_opcode (ptr)) {
- ent = get_Sel_entity (ptr);
- }
- if (ent) {
- set_insert (_live_fields, ent);
- }
- } else if (iro_Alloc == op) {
- type *type = get_Alloc_type (node);
- set_insert (_live_classes, type);
+ *change |= add_class (type);
}
}
-static void rta_fill_graph (ir_graph* graph)
+/**
+ Traverse the given graph to collect method accesses and
+ object allocations.
+*/
+static int rta_fill_graph (ir_graph* graph)
{
- irg_walk (get_irg_end_block (graph), rta_act, NULL, NULL);
+ int change = FALSE;
+
+ current_ir_graph = graph;
+
+ irg_walk_graph (graph, rta_act, NULL, &change);
+
+ return (change);
}
-static void rta_fill_all ()
+/** Traverse all graphs to collect method accesses and object allocations.
+ */
+static int rta_fill_incremental (void)
{
int i;
+ int n_runs = 0;
+ int rerun = TRUE;
+ int old_ip_view = get_interprocedural_view();
+
+ set_interprocedural_view(0); /* save this for later */
+
+ /* init_tables has added main_irg to _live_graphs */
+
+ /* Need to take care of graphs that are externally
+ visible or sticky. Pretend that they are called: */
for (i = 0; i < get_irp_n_irgs(); i++) {
- rta_fill_graph (get_irp_irg (i));
+ ir_graph *graph = get_irp_irg (i);
+ entity *ent = get_irg_entity (graph);
+
+ if ((visibility_external_visible == get_entity_visibility (ent)) ||
+ (stickyness_sticky == get_entity_stickyness (ent))) {
+ eset_insert (_live_graphs, graph);
+ // printf("external visible: "); DDMG(graph);
+ }
}
-}
-static int is_call_target (entity *method)
-{
- return (TRUE);
-}
+ while (rerun) {
+ ir_graph *graph;
+ /* start off new */
+ eset *live_graphs = _live_graphs;
+ _live_graphs = eset_create ();
-static ir_graph *get_implementing_graph (entity *method)
-{
- ir_graph *graph = get_entity_irg (method);
+ if (verbose > 1) {
+ fprintf(stdout, "RTA: RUN %i\n", n_runs);
+ }
- if (NULL == graph) {
- int i;
- int n_over = get_entity_n_overwrites (method);
+ /* collect what we have found previously */
+ eset_insert_all (_live_graphs, live_graphs);
- for (i = 0; (NULL == graph) && (i < n_over); i ++) {
- entity *over = get_entity_overwrites (method, i);
- graph = get_implementing_graph (over);
+ rerun = FALSE;
+ for (graph = eset_first (live_graphs);
+ graph;
+ graph = eset_next (live_graphs)) {
+
+ if (verbose > 1) {
+ fprintf(stdout, "RTA: RUN %i: considering graph of ", n_runs);
+ DDMEO(get_irg_entity (graph));
+ }
+
+ rerun |= rta_fill_graph (graph);
}
+
+ eset_destroy (live_graphs);
+
+ n_runs ++;
}
- assert (graph && "no graph");
+ set_interprocedural_view(old_ip_view); /* cover up our traces */
- return (graph);
+ return (n_runs);
}
-static int has_live_call (entity *method, ir_graph *graph)
+/**
+ * Count the number of graphs that we have found to be live.
+ */
+static int stats (void)
{
- int has_call = FALSE;
- int i, n_over;
+ int i;
+ int n_live_graphs = 0;
+ int n_graphs = get_irp_n_irgs();
+
+ for (i = 0; i < n_graphs; i++) {
+ ir_graph *graph = get_irp_irg(i);
- if (get_irg_ent (graph) != method) {
- return (FALSE);
+ if (rta_is_alive_graph (graph)) {
+ n_live_graphs ++;
+ }
}
- if (is_call_target (method)) {
- return (TRUE);
+ return (n_live_graphs);
+}
+
+/* remove a graph, part I */
+/*
+ We removed the first graph to implement the entity, so we're
+ abstract now. Pretend that it wasn't there at all, and every
+ entity that used to inherit this entity's graph is now abstract.
+*/
+/* Since we *know* that this entity will not be called, this is OK. */
+static void force_description (entity *ent, entity *addr)
+{
+ int i, n_over = get_entity_n_overwrittenby (ent);
+
+ set_entity_peculiarity (ent, peculiarity_description);
+
+ for (i = 0; i < n_over; i ++) {
+ entity *over = get_entity_overwrittenby (ent, i);
+
+ if (peculiarity_inherited == get_entity_peculiarity (over)) {
+ /* We rely on the fact that cse is performed on the const_code_irg. */
+ entity *my_addr = get_SymConst_entity(get_atomic_ent_value(over));
+
+ if (addr == my_addr) {
+ force_description (over, addr);
+ }
+ } else if (peculiarity_existent == get_entity_peculiarity (over)) {
+ /* check whether 'over' forces 'inheritance' of *our* graph: */
+ ir_node *f_addr = get_atomic_ent_value (over);
+ entity *impl_ent = get_SymConst_entity (f_addr);
+
+ assert ((get_irn_op(f_addr) == op_SymConst) && "can't do complex addrs");
+ if (impl_ent == addr) {
+ assert (0 && "gibt's denn sowas");
+ force_description (over, addr);
+ }
+ }
}
+}
- n_over = get_entity_n_overwrittenby (method);
- for (i = 0; !has_call && (i < n_over); i ++) {
- entity *over = get_entity_overwrittenby(method, i);
- has_call |= has_live_call (over, graph);
+/**
+ Initialize the static data structures.
+*/
+static void init_tables (void)
+{
+ int i, n_globs = get_class_n_members(get_glob_type());
+
+ _live_classes = eset_create ();
+ _live_graphs = eset_create ();
+
+ if (get_irp_main_irg ()) {
+ eset_insert (_live_graphs, get_irp_main_irg ());
}
- return (has_call);
+ /* Find static allocated classes */
+ for (i = 0; i < n_globs; ++i) {
+ ir_type *member_type = get_entity_type(get_class_member(get_glob_type(), i));
+ if (is_Class_type(member_type))
+ eset_insert(_live_classes, member_type);
+ }
}
-static int has_graph (type *clazz, ir_graph *graph)
+/*
+ * Initialize the RTA data structures, and perform RTA.
+ * do_verbose If == 1, print statistics, if > 1, chatter about every detail
+ */
+void rta_init (int do_verbose)
{
- int has_the_graph = FALSE;
- int i;
- int n_sub;
+ int i, n_runs = 0;
+
+ int rem_vpi = get_visit_pseudo_irgs();
+ set_visit_pseudo_irgs(1);
- if (set_contains (_live_classes, clazz)) {
- int n_meth = get_class_n_members (clazz);
+# ifdef DEBUG_libfirm
+ for (i = 0; i < get_irp_n_irgs(); i++) {
+ irg_vrfy (get_irp_irg(i));
+ }
+ tr_vrfy ();
+# endif /* defined DEBUG_libfirm */
- for (i = 0; i < n_meth; i ++) {
- entity *member = get_class_member (clazz, i);
- if (is_method_type (get_entity_type (member))) {
- ir_graph *impl = get_entity_irg (member);
+ verbose = do_verbose;
- if (impl == graph) {
- return (TRUE);
- }
- } /* is_method */
- } /* all methods */
- } /* _live_classes.contains (clazz) */
+ init_tables ();
- n_sub = get_class_n_subtypes (clazz);
- for (i = 0; !has_the_graph && (i < n_sub); i ++) {
- type *sub = get_class_subtype (clazz, i);
+ n_runs = rta_fill_incremental ();
- has_the_graph |= has_graph (sub, graph);
+ if (verbose) {
+ int n_live_graphs = stats ();
+
+ printf ("RTA: n_graphs = %i\n", get_irp_n_irgs ());
+ printf ("RTA: n_live_graphs = %i\n", n_live_graphs);
+ printf ("RTA: n_runs = %i\n", n_runs);
+ }
+
+# ifdef DEBUG_libfirm
+ for (i = 0; i < get_irp_n_irgs(); i++) {
+ irg_vrfy (get_irp_irg(i));
}
+ tr_vrfy ();
+# endif /* defined DEBUG_libfirm */
+
+ set_visit_pseudo_irgs(rem_vpi);
+}
- return (has_the_graph);
+/**
+ * walker for all types and entities
+ *
+ * Changes the peculiarity of entities that represents
+ * dead graphs to peculiarity_description.
+ */
+static void make_entity_to_description(type_or_ent *tore, void *env) {
+ if (get_kind(tore) == k_entity) {
+ entity *ent = (entity *)tore;
+
+ if ((is_Method_type(get_entity_type(ent))) &&
+ (get_entity_peculiarity(ent) != peculiarity_description) &&
+ (get_entity_visibility(ent) != visibility_external_allocated) ) {
+ ir_graph *irg = get_entity_irg(get_SymConst_entity(get_atomic_ent_value(ent)));
+ if (!eset_contains (_live_graphs, irg)) {
+ set_entity_peculiarity(ent, peculiarity_description);
+ set_entity_irg(ent, NULL);
+ }
+ }
+ }
}
-static int has_live_class (entity *method, ir_graph *graph)
+/* Delete all graphs that we have found to be dead from the program
+ If verbose == 1, print statistics, if > 1, chatter about every detail
+*/
+void rta_delete_dead_graphs (void)
{
- int has_class = FALSE;
int i;
- int n_over;
- type *clazz;
+ int n_graphs = get_irp_n_irgs ();
+ ir_graph *graph = NULL;
+ int n_dead_graphs = 0;
+ ir_graph **dead_graphs;
- if (get_implementing_graph (method) != graph) {
- return (FALSE);
- }
+ int rem_vpi = get_visit_pseudo_irgs();
+ set_visit_pseudo_irgs(1);
- clazz = get_entity_owner (method);
- if (has_graph (clazz, graph)) {
- return (TRUE);
- }
+ if (!get_optimize() || !get_opt_dead_method_elimination()) return;
- n_over = get_entity_n_overwrittenby (method);
- for (i = 0; !has_class && (i < n_over); i ++) {
- entity *over = get_entity_overwrittenby (method, i);
- has_class |= has_live_class (over, graph);
- }
+ dead_graphs = xmalloc(sizeof(*dead_graphs) * get_irp_n_irgs());
- return (has_class);
-}
+ for (i = 0; i < n_graphs; i++) {
+ graph = get_irp_irg(i);
+ if (rta_is_alive_graph (graph)) {
+ /* do nothing (except some debugging fprintf`s :-) */
+ } else {
+# ifdef DEBUG_libfirm
+ entity *ent = get_irg_entity (graph);
+ assert (visibility_external_visible != get_entity_visibility (ent));
+# endif /* defined DEBUG_libfirm */
-void rta_init ()
-{
- fprintf (stdout, "BEGIN %s(%i): %s\n", __FILE__, __LINE__, __FUNCTION__);
+ dead_graphs[n_dead_graphs] = graph;
+ n_dead_graphs ++;
+ }
+ }
- _live_classes = new_set ();
- _live_fields = new_set ();
- _called_methods = new_set ();
+ type_walk(make_entity_to_description, NULL, NULL);
+ for (i = 0; i < n_dead_graphs; ++i) {
+ remove_irp_irg (dead_graphs[i]);
+ }
- _live_graphs = new_set ();
- _dead_graphs = new_set ();
+ if (verbose) {
+ printf ("RTA: n_dead_graphs = %i\n", n_dead_graphs);
+ }
- fprintf (stdout, "FILL %s(%i): %s\n", __FILE__, __LINE__, __FUNCTION__);
- rta_fill_all ();
- fprintf (stdout, "DONE %s(%i): %s\n", __FILE__, __LINE__, __FUNCTION__);
+ set_visit_pseudo_irgs(rem_vpi);
- /*
- * shold be:
- * rta_fill_queue ()
- */
+ free(dead_graphs);
}
-void rta_cleanup ()
+/* Clean up the RTA data structures. Call this after calling rta_init */
+void rta_cleanup (void)
{
+# ifdef DEBUG_libfirm
+ int i;
+ for (i = 0; i < get_irp_n_irgs(); i++) {
+ irg_vrfy (get_irp_irg(i));
+ }
+ tr_vrfy ();
+# endif /* defined DEBUG_libfirm */
+
if (_live_classes) {
- delete_set (_live_classes);
+ eset_destroy (_live_classes);
_live_classes = NULL;
}
- if (_live_fields) {
- delete_set (_live_fields);
- _live_fields = NULL;
- }
-
- if (_called_methods) {
- delete_set (_called_methods);
- _called_methods = NULL;
- }
-
if (_live_graphs) {
- delete_set (_live_graphs);
+ eset_destroy (_live_graphs);
_live_graphs = NULL;
}
-
- if (_dead_graphs) {
- delete_set (_dead_graphs);
- _dead_graphs = NULL;
- }
}
-int rta_is_alive_class (type *clazz)
+/* Say whether this class might be instantiated at any point in the program: */
+int rta_is_alive_class (ir_type *clazz)
{
- return (set_contains (_live_classes, clazz));
+ return (eset_contains (_live_classes, clazz));
}
+/* Say whether this graph might be run at any time in the program: */
int rta_is_alive_graph (ir_graph *graph)
{
- if (set_contains (_live_graphs, graph)) {
- return (TRUE);
- }
-
- if (set_contains (_dead_graphs, graph)) {
- return (FALSE);
- }
-
- entity *meth = get_irg_ent (graph);
-
- if (has_live_call (meth, graph) && has_live_class (meth, graph)) {
- set_insert (_live_graphs, graph);
+ return eset_contains (_live_graphs, graph);
+}
- return (TRUE);
- } else {
- set_insert (_dead_graphs, graph);
+/* dump our opinion */
+void rta_report (void)
+{
+ int i;
- return (FALSE);
+ for (i = 0; i < get_irp_n_types(); ++i) {
+ ir_type *tp = get_irp_type(i);
+ if (is_Class_type(tp) && rta_is_alive_class(tp)) {
+ fprintf(stdout, "RTA: considered allocated: "); DDMT(tp);
+ }
}
-}
-int rta_is_alive_field (entity *field)
-{
- return (set_contains (_live_fields, field));
+ for (i = 0; i < get_irp_n_irgs(); i++) {
+ if (rta_is_alive_graph (get_irp_irg(i))) {
+ fprintf(stdout, "RTA: considered called: graph of ");
+ DDMEO(get_irg_entity (get_irp_irg(i)));
+ }
+ }
}
-
/*
* $Log$
+ * Revision 1.35 2006/01/13 21:51:59 beck
+ * renamed all types 'type' to 'ir_type'
+ *
+ * Revision 1.34 2006/01/02 15:01:16 beck
+ * missing include added
+ *
+ * Revision 1.33 2005/11/17 17:26:57 beck
+ * removed bool type and depency from stdbool.h (not C89)
+ *
+ * Revision 1.32 2005/01/05 14:24:52 beck
+ * renames all is_x*_type() functions to is_X*_type() to prevent name clash with EDG frontend
+ *
+ * Revision 1.31 2004/12/21 13:45:14 beck
+ * removed C99 constructs
+ *
+ * Revision 1.30 2004/12/02 16:16:11 beck
+ * fixed config.h include
+ * used xmalloc instead of malloc
+ *
+ * Revision 1.29 2004/11/11 13:28:08 goetz
+ * made pseudo irg aware
+ *
+ * Revision 1.28 2004/11/03 14:47:18 beck
+ * removed gloval intraprocedural_view variable and replaced by get_*() set_*() functions
+ *
+ * Revision 1.27 2004/10/21 07:23:34 goetz
+ * comments
+ *
+ * Revision 1.26 2004/10/20 14:59:27 liekweg
+ * Removed ecg
+ *
+ * Revision 1.25 2004/10/18 12:47:08 liekweg
+ * avoid warning
+ *
+ * Revision 1.24 2004/09/24 13:59:04 beck
+ * fixed doxygen comments, removed initialization for description entities
+ *
+ * Revision 1.23 2004/08/19 16:51:02 goetz
+ * fixed some errors, pushed closer to inteded firm semantics
+ *
+ * Revision 1.22 2004/08/13 08:57:15 beyhan
+ * normalized names of functions, enums ...
+ * added suffix as argument to dumpers, removed global variable
+ * removed support for tarval/Const
+ *
+ * Revision 1.21 2004/07/08 15:50:56 goetz
+ * firmstat added
+ *
+ * Revision 1.20 2004/07/08 11:17:40 goetz
+ * *** empty log message ***
+ *
+ * Revision 1.19 2004/07/06 12:30:37 beyhan
+ * new SymConst semantics
+ *
+ * Revision 1.18 2004/06/27 21:17:41 liekweg
+ * Added comment
+ *
+ * Revision 1.17 2004/06/25 13:45:13 liekweg
+ * observe stickyness; minor refactoring
+ *
+ * Revision 1.16 2004/06/24 06:42:14 goetz
+ * test of firm flags
+ *
+ * Revision 1.15 2004/06/18 15:47:19 liekweg
+ * minor bug fix (go forward, not backward) --flo
+ *
+ * Revision 1.14 2004/06/18 13:12:43 liekweg
+ * final bug fix (calls via consts)
+ *
+ * Revision 1.13 2004/06/17 16:34:33 liekweg
+ * removed DD*s
+ *
+ * Revision 1.12 2004/06/17 16:33:33 liekweg
+ * minor bug fix
+ *
+ * Revision 1.11 2004/06/17 14:21:13 liekweg
+ * major bugfix
+ *
+ * Revision 1.10 2004/06/17 10:31:41 goetz
+ * irscc: bugfix, can now deal with loops not reachable from start
+ * cgana: bugfix, skip_Tuple
+ * rta: improved
+ *
+ * Revision 1.9 2004/06/17 08:56:03 liekweg
+ * Fixed typos in comments
+ *
+ * Revision 1.8 2004/06/17 08:33:01 liekweg
+ * Added comments; added remove_irg
+ *
+ * Revision 1.6 2004/06/14 13:02:03 goetz
+ * bugfixesbug
+ *
+ * Revision 1.5 2004/06/13 15:03:45 liekweg
+ * RTA auf Iterative RTA aufgebohrt --flo
+ *
+ * Revision 1.4 2004/06/12 19:35:04 liekweg
+ * Kommentare eingef"ugt --flo
+ *
+ * Revision 1.3 2004/06/12 17:09:46 liekweg
+ * RTA works, outedges breaks. "Yay." --flo
+ *
+ * Revision 1.2 2004/06/11 18:25:39 liekweg
+ * Added todo
+ *
* Revision 1.1 2004/06/11 18:24:18 liekweg
* Added RTA --flo
*