-/* -------------------------------------------------------------------
- * $Id$
- * -------------------------------------------------------------------
- * Intraprozedurale Analyse zur Abschätzung der Aufrulrelation. Es
+/*
+ * Project: libFIRM
+ * File name: ir/ana/cgana.c
+ * Purpose: Intraprozedural analyses to estimate the call graph.
+ * Author: Hubert Schmid
+ * Modified by:
+ * Created: 09.06.2002
+ * CVS-ID: $Id$
+ * Copyright: (c) 1999-2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ */
+
+/**
+ * Intraprozedurale Analyse zur Abschätzung der Aufrufrelation. Es
* wird eine Menge von freien Methoden und anschließend die an den
* Call-Operationen aufrufbaren Methoden bestimmt.
*
- * Erstellt: Hubert Schmid, 09.06.2002
- * ---------------------------------------------------------------- */
+ */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
-#include "stdlib.h"
+#include <stdlib.h>
#include "cgana.h"
+#include "rta.h"
-
-#include "eset.h"
-#include "pmap.h"
-#include "array.h"
-#include "irprog.h"
+#include "irnode_t.h"
+#include "irmode_t.h"
+#include "irprog_t.h"
#include "irgwalk.h"
#include "ircons.h"
#include "irgmod.h"
-#include "xprintf.h"
-#include "irnode.h"
+#include "irflag_t.h"
#include "dbginfo_t.h"
+#include "eset.h"
+#include "pmap.h"
+#include "array.h"
+
+#include "irdump.h"
+
/* Eindeutige Adresse zur Markierung von besuchten Knoten und zur
* Darstellung der unbekannten Methode. */
static void * MARK = &MARK;
static eset * entities = NULL;
-/* Bestimmt die eindeutige Methode, die die Methode für den
- * übergebenene (dynamischen) Typ überschreibt. */
+/** Bestimmt die eindeutige Methode, die die Methode für den
+ * übergebenen (dynamischen) Typ überschreibt. */
static entity * get_implementation(type * class, entity * method) {
int i;
- if (get_entity_peculiarity(method) != description &&
+ if (get_entity_peculiarity(method) != peculiarity_description &&
get_entity_owner(method) == class) {
return method;
}
for (i = get_entity_n_overwrittenby(method) - 1; i >= 0; --i) {
entity * e = get_entity_overwrittenby(method, i);
- if (get_entity_peculiarity(e) != description && get_entity_owner(e) == class) {
+ if (get_entity_peculiarity(e) != peculiarity_description && get_entity_owner(e) == class) {
return e;
}
}
return e;
}
}
- assert(0 && "implemenation not found");
+ assert(0 && "implementation not found");
+ return NULL;
}
-/* Returns the entity that contains the implementation of the inherited
- entity if available, else returns the entity passed. */
-entity *get_inherited_methods_implementation(entity *inh_meth) {
+/** Returns the entity that contains the implementation of the inherited
+ entity if available, else returns the entity passed. */
+static entity *get_inherited_methods_implementation(entity *inh_meth) {
entity *impl_meth = NULL;
ir_node *addr = get_atomic_ent_value(inh_meth);
assert(addr && "constant entity without value");
-
- if (get_irn_op(addr) == op_Const) {
- impl_meth = get_tv_entity(get_Const_tarval(addr));
+ if ((get_irn_op(addr) == op_SymConst) &&
+ (get_SymConst_kind(addr) == symconst_addr_ent)) {
+ impl_meth = get_SymConst_entity(addr);
+ } else {
+ assert(0 && "Complex constant values not supported -- address of method should be straight constant!");
+ }
+ if (impl_meth && (get_entity_peculiarity(impl_meth) != peculiarity_existent)) {
+ /*
+ printf("this_meth: "); DDMEO(inh_meth);
+ printf("impl meth: "); DDMEO(impl_meth);
+ assert(!impl_meth || get_entity_peculiarity(impl_meth) == peculiarity_existent);
+ */
+ impl_meth = NULL;
}
-
- assert(!impl_meth || get_entity_peculiarity(impl_meth) == existent);
return impl_meth? impl_meth : inh_meth;
}
-/* Collect the entity representing the implementation of this
- entity (not the same if inherited) and all entities for overwriting
- implementations in "set".
- If the implementation of the method is not included in the
- compilation unit "open" is set to true.
- A recursive descend in the overwritten relation.
- Cycle-free, therefore must terminate. */
-void collect_impls(entity *method, eset *set, int *size, bool *open) {
+/** Collect the entity representing the implementation of this
+ * entity (not the same if inherited) and all entities for overwriting
+ * implementations in "set".
+ * If the implementation of the method is not included in the
+ * compilation unit "open" is set to true.
+ * A recursive descend in the overwritten relation.
+ * Cycle-free, therefore must terminate.
+ *
+ * @param method
+ * @param set A set of entities.
+ * @param size Number of entities in set.
+ * @param open
+ */
+static void collect_impls(entity *method, eset *set, int *size, bool *open) {
int i;
- if (get_entity_peculiarity(method) == existent) {
- if (get_entity_visibility(method) == external_allocated) {
+
+ if (get_entity_peculiarity(method) == peculiarity_existent) {
+ if (get_entity_visibility(method) == visibility_external_allocated) {
assert(get_entity_irg(method) == NULL);
*open = true;
} else {
assert(get_entity_irg(method) != NULL);
if (!eset_contains(set, method)) {
- eset_insert(set, method);
- ++(*size);
+ eset_insert(set, method);
+ ++(*size);
}
}
}
- if (get_entity_peculiarity(method) == inherited) {
+
+ if (get_entity_peculiarity(method) == peculiarity_inherited) {
entity *impl_ent = get_inherited_methods_implementation(method);
assert(impl_ent && "no implementation for inherited entity");
- if (get_entity_visibility(impl_ent) == external_allocated) {
+ if (get_entity_visibility(impl_ent) == visibility_external_allocated) {
assert(get_entity_irg(impl_ent) == NULL);
*open = true;
} else {
assert(get_entity_irg(impl_ent) != NULL);
if (!eset_contains(set, impl_ent)) {
- eset_insert(set, impl_ent);
- ++(*size);
+ eset_insert(set, impl_ent);
+ ++(*size);
}
}
}
- /** recursive descend **/
+ /** recursive descent **/
for (i = get_entity_n_overwrittenby(method) - 1; i >= 0; --i)
collect_impls(get_entity_overwrittenby(method, i), set, size, open);
}
-/* Alle Methoden bestimmen, die die übergebene Methode überschreiben
- * (und implementieren). In der zurückgegebenen Reihung kommt jede
- * Methode nur einmal vor. Der Wert 'NULL' steht für unbekannte
- * (externe) Methoden. Die zurückgegebene Reihung muß vom Aufrufer
- * wieder freigegeben werden (siehe "DEL_ARR_F"). Gibt es überhaupt
- * keine Methoden, die die "method" überschreiben, so gibt die Methode
- * "NULL" zurück. */
+/** Alle Methoden bestimmen, die die übergebene Methode überschreiben
+ * (und implementieren). In der zurückgegebenen Reihung kommt jede
+ * Methode nur einmal vor. Der Wert 'NULL' steht für unbekannte
+ * (externe) Methoden. Die zurückgegebene Reihung muß vom Aufrufer
+ * wieder freigegeben werden (siehe "DEL_ARR_F"). Gibt es überhaupt
+ * keine Methoden, die "method" überschreiben, so gibt die Methode
+ * "NULL" zurück.
+ *
+ * @param method
+ */
static entity ** get_impl_methods(entity * method) {
eset * set = eset_create();
int size = 0;
entity ** arr;
bool open = false;
- /** Collect all method entities that can be called here **/
+ /* Collect all method entities that can be called here */
collect_impls(method, set, &size, &open);
-/**
- Vorgaenger einfuegen. **/
+ /* Vorgaenger einfuegen. */
if (size == 0 && !open) {
/* keine implementierte überschriebene Methode */
arr = NULL;
/* debug makros used in sel_methods_walker */
#define SIZ(x) sizeof(x)/sizeof((x)[0])
-#define DBG_OPT_NORMALIZE \
- __dbg_info_merge_pair(new_node, node, dbg_const_eval)
-#define DBG_OPT_POLY_ALLOC \
- do { \
- ir_node *ons[2]; \
- ons[0] = node; \
- ons[1] = skip_Proj(get_Sel_ptr(node)); \
- __dbg_info_merge_sets(&new_node, 1, ons, SIZ(ons), dbg_rem_poly_call); \
+#define DBG_OPT_NORMALIZE \
+ __dbg_info_merge_pair(new_node, node, dbg_const_eval)
+#define DBG_OPT_POLY_ALLOC \
+ do { \
+ ir_node *ons[2]; \
+ ons[0] = node; \
+ ons[1] = skip_Proj(get_Sel_ptr(node)); \
+ __dbg_info_merge_sets(&new_node, 1, ons, SIZ(ons), dbg_rem_poly_call); \
} while(0)
-#define DBG_OPT_POLY \
- __dbg_info_merge_pair(new_node, node, dbg_rem_poly_call)
+#define DBG_OPT_POLY \
+ __dbg_info_merge_pair(new_node, node, dbg_rem_poly_call)
+
+/** Analyse address computations.
+ *
+ * - If the node is a SymConst(name) replace it by SymConst(ent) if possible.
+ * - If the node is a Sel:
+ * * If the pointer to the Sel comes directly from an Alloc node
+ * replace the Sel by a SymConst(ent).
+ *
+ *
+ * @param node The node to analyze
+ * @param ldname_map A map that mapps names of entities to the entities.
+ */
static void sel_methods_walker(ir_node * node, pmap * ldname_map) {
+
+ /* SymConst(name)-Operation durch SymConst(ent)-Operation ersetzen. */
if (get_irn_op(node) == op_SymConst) {
- /* Wenn möglich SymConst-Operation durch Const-Operation
- * ersetzen. */
- if (get_SymConst_kind(node) == linkage_ptr_info) {
- pmap_entry * entry = pmap_find(ldname_map, (void *) get_SymConst_ptrinfo(node));
+ if (get_SymConst_kind(node) == symconst_addr_name) {
+ pmap_entry * entry = pmap_find(ldname_map, (void *) get_SymConst_name(node));
if (entry != NULL) { /* Method is declared in the compiled code */
entity * ent = entry->value;
- if (get_entity_visibility(ent) != external_allocated) { /* Meth. is defined */
- ir_node *new_node;
+ if (get_opt_normalize() && (get_entity_visibility(ent) != visibility_external_allocated)) { /* Meth. is defined */
+ set_irg_current_block(current_ir_graph, get_nodes_block(node));
+ ir_node *new_node = copy_const_value(get_atomic_ent_value(ent));
+ DBG_OPT_NORMALIZE;
assert(get_entity_irg(ent));
- set_irg_current_block(current_ir_graph, get_nodes_Block(node));
- new_node = new_d_Const(get_irn_dbg_info(node),
- mode_P, tarval_P_from_entity(ent)); DBG_OPT_NORMALIZE;
+ DDMN(new_node);
exchange(node, new_node);
}
}
}
- } else if (get_irn_op(node) == op_Sel &&
- is_method_type(get_entity_type(get_Sel_entity(node)))) {
+ }
+
+ else if (get_irn_op(node) == op_Sel &&
+ is_method_type(get_entity_type(get_Sel_entity(node)))) {
entity * ent = get_Sel_entity(node);
- if (get_irn_op(skip_Proj(get_Sel_ptr(node))) == op_Alloc) {
+
+ /* Sel from Alloc: replace by constant */
+ if (get_opt_optimize() && get_opt_dyn_meth_dispatch() &&
+ (get_irn_op(skip_Proj(get_Sel_ptr(node))) == op_Alloc)) {
ir_node *new_node;
+ entity *called_ent;
/* We know which method will be called, no dispatch necessary. */
- assert(get_entity_peculiarity(ent) != description);
- set_irg_current_block(current_ir_graph, get_nodes_Block(node));
- new_node = copy_const_value(get_atomic_ent_value(ent)); DBG_OPT_POLY_ALLOC;
+ called_ent = resolve_ent_polymorphy(get_Alloc_type(skip_Proj(get_Sel_ptr(node))), ent);
+ set_irg_current_block(current_ir_graph, get_nodes_block(node));
+ /* called_ent may not be description: has no Address/Const to Call! */
+ assert(get_entity_peculiarity(called_ent) != peculiarity_description);
+ new_node = copy_const_value(get_atomic_ent_value(called_ent)); DBG_OPT_POLY_ALLOC;
exchange (node, new_node);
- } else {
- assert(get_entity_peculiarity(ent) != inherited);
+ }
+
+ else {
+ assert(get_entity_peculiarity(ent) != peculiarity_inherited);
if (!eset_contains(entities, ent)) {
- /* Entity noch nicht behandelt. Alle (intern oder extern)
- * implementierten Methoden suchen, die diese Entity
- * überschreiben. Die Menge an entity.link speichern. */
- set_entity_link(ent, get_impl_methods(ent));
- eset_insert(entities, ent);
+ /* Entity noch nicht behandelt. Alle (intern oder extern)
+ * implementierten Methoden suchen, die diese Entity
+ * überschreiben. Die Menge an entity.link speichern. */
+ set_entity_link(ent, get_impl_methods(ent));
+ eset_insert(entities, ent);
}
if (get_entity_link(ent) == NULL) {
- /* Die Sel-Operation kann nie einen Zeiger auf eine aufrufbare
- * Methode zurückgeben. Damit ist sie insbesondere nicht
- * ausführbar und nicht erreichbar. */
- /* Gib eine Warnung aus wenn die Entitaet eine Beschreibung ist
- fuer die es keine Implementierung gibt. */
- if (get_entity_peculiarity(ent) == description) {
- /* @@@ GL Methode um Fehler anzuzeigen aufrufen! */
- xprintf("WARNING: Calling method description %I in method %I which has "
- "no implementation!\n", get_entity_ident(ent),
- get_entity_ident(get_irg_ent(current_ir_graph)));
- } else {
- exchange(node, new_Bad());
- }
+ /* Die Sel-Operation kann nie einen Zeiger auf eine aufrufbare
+ * Methode zurückgeben. Damit ist sie insbesondere nicht
+ * ausführbar und nicht erreichbar. */
+ /* Gib eine Warnung aus wenn die Entitaet eine Beschreibung ist
+ fuer die es keine Implementierung gibt. */
+ if (get_entity_peculiarity(ent) == peculiarity_description) {
+ /* This is possible: We call a method in a dead part of the program. */
+ } else {
+ DDMN(node);
+ assert(0); /* Why should this happen ??? */
+ //exchange(node, new_Bad());
+ }
} else {
- entity ** arr = get_entity_link(ent);
+ entity ** arr = get_entity_link(ent);
#if 0
- int i;
- printf("\nCall site "); DDMN(node);
- printf(" in "); DDME(get_irg_ent(current_ir_graph));
- printf(" can call:\n");
- for (i = 0; i < ARR_LEN(arr); i++) {
- printf(" - "); DDME(arr[i]);
- printf(" with owner "); DDMT(get_entity_owner(arr[i]));
- }
- printf("\n");
+ int i;
+ printf("\nCall site "); DDMN(node);
+ printf(" in "); DDME(get_irg_entity(current_ir_graph));
+ printf(" can call:\n");
+ for (i = 0; i < ARR_LEN(arr); i++) {
+ printf(" - "); DDME(arr[i]);
+ printf(" with owner "); DDMT(get_entity_owner(arr[i]));
+ }
+ printf("\n");
#endif
- if (ARR_LEN(arr) == 1 && arr[0] != NULL) {
- ir_node *new_node;
- /* Die Sel-Operation kann immer nur einen Wert auf eine
- * interne Methode zurückgeben. Wir können daher die
- * Sel-Operation durch eine Const- bzw. SymConst-Operation
- * ersetzen. */
- set_irg_current_block(current_ir_graph, get_nodes_Block(node));
- new_node = copy_const_value(get_atomic_ent_value(arr[0])); DBG_OPT_POLY;
- exchange (node, new_node);
- }
+ if (get_opt_optimize() && get_opt_dyn_meth_dispatch() &&
+ (ARR_LEN(arr) == 1 && arr[0] != NULL)) {
+ ir_node *new_node;
+ /* Die Sel-Operation kann immer nur _einen_ Wert auf eine
+ * interne Methode zurückgeben. Wir können daher die
+ * Sel-Operation durch eine Const- bzw. SymConst-Operation
+ * ersetzen. */
+ set_irg_current_block(current_ir_graph, get_nodes_block(node));
+ assert(get_entity_peculiarity(get_SymConst_entity(get_atomic_ent_value(arr[0]))) ==
+ peculiarity_existent);
+ new_node = copy_const_value(get_atomic_ent_value(arr[0])); DBG_OPT_POLY;
+ exchange (node, new_node);
+ }
}
}
}
}
-/* Datenstruktur initialisieren. Zusätzlich werden alle
- * SymConst-Operationen, die auf interne Methoden verweisen, durch
- * Const-Operationen ersetzt. */
+/** Datenstruktur initialisieren. Zusätzlich werden alle
+ * SymConst-Operationen, die auf interne Methoden verweisen, durch
+ * Const-Operationen ersetzt. */
static void sel_methods_init(void) {
int i;
- pmap * ldname_map = pmap_create();
+ pmap * ldname_map = pmap_create(); /* Map entitiy names to entities: to replace SymConst by Const(ent). */
assert(entities == NULL);
entities = eset_create();
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
- entity * ent = get_irg_ent(get_irp_irg(i));
+ entity * ent = get_irg_entity(get_irp_irg(i));
/* Nur extern sichtbare Methode können überhaupt mit SymConst
* aufgerufen werden. */
- if (get_entity_visibility(ent) != local) {
+ if (get_entity_visibility(ent) != visibility_local) {
pmap_insert(ldname_map, (void *) get_entity_ld_ident(ent), ent);
}
}
ir_node * pred = get_Proj_pred(node);
if (get_irn_link(pred) != MARK) {
if (get_irn_op(pred) == op_Tuple) {
- callee_ana_proj(get_Tuple_pred(pred, get_Proj_proj(node)), n, methods);
+ callee_ana_proj(get_Tuple_pred(pred, get_Proj_proj(node)), n, methods);
} else {
- eset_insert(methods, MARK); /* free method -> unknown */
+ eset_insert(methods, MARK); /* free method -> unknown */
}
}
break;
static void callee_ana_node(ir_node * node, eset * methods) {
int i;
- assert((get_irn_mode(node) == mode_P) || is_Bad(node));
+ assert(mode_is_reference(get_irn_mode(node)) || is_Bad(node));
/* rekursion verhindern */
if (get_irn_link(node) == MARK) {
/* already visited */
switch (get_irn_opcode(node)) {
case iro_SymConst:
- /* externe Methode (wegen fix_symconst!) */
- eset_insert(methods, MARK); /* free method -> unknown */
- break;
-
- case iro_Const: {
- /* interne Methode */
- entity * ent = get_Const_tarval(node)->u.P.ent;
- assert(ent && is_method_type(get_entity_type(ent)));
- if (get_entity_visibility(ent) != external_allocated) {
- assert(get_entity_irg(ent));
- eset_insert(methods, ent);
+ if (get_SymConst_kind(node) == symconst_addr_ent) {
+ entity * ent = get_SymConst_entity(node);
+ assert(ent && is_method_type(get_entity_type(ent)));
+ if (get_entity_visibility(ent) != visibility_external_allocated) {
+ assert(get_entity_irg(ent));
+ eset_insert(methods, ent);
+ } else {
+ eset_insert(methods, MARK); /* free method -> unknown */
+ }
} else {
+ assert(get_SymConst_kind(node) == symconst_addr_name);
+ /* externe Methode (wegen fix_symconst!) */
eset_insert(methods, MARK); /* free method -> unknown */
}
break;
- }
-
case iro_Sel:
/* polymorphe Methode */
for (i = get_Sel_n_methods(node) - 1; i >= 0; --i) {
entity * ent = get_Sel_method(node, i);
if (ent) {
- eset_insert(methods, ent);
+ eset_insert(methods, ent);
} else {
- eset_insert(methods, MARK);
+ eset_insert(methods, MARK);
}
}
break;
eset * methods = eset_create();
entity * ent;
entity ** arr = NEW_ARR_F(entity *, 0);
- callee_ana_node(skip_nop(get_Call_ptr(call)), methods);
+ callee_ana_node(skip_Id(get_Call_ptr(call)), methods);
if (eset_contains(methods, MARK)) { /* unknown method */
ARR_APP1(entity *, arr, NULL);
}
ARR_APP1(entity *, arr, ent);
}
}
- if (ARR_LEN(arr) == 0) {
+#if 0 /* This generates Bad nodes when we don't want it.
+ Call it with a check for valid cgana information in local_optimize. */
+ if (ARR_LEN(arr) == 0 && get_opt_optimize() && get_opt_dyn_meth_dispatch()) {
/* Kann vorkommen, wenn der Vorgänger beispielsweise eine
* Sel-Operation war, die keine Methoden zurückgeben
* konnte. Wir ersetzen die Call-Operation ebenfalls durch
* eine Bad-Operation. Die Verlinkung muss wiederhergestellt
* werden! */
- exchange(call, new_Bad());
- } else {
+ ir_node *mem = get_Call_mem(call);
+ turn_into_tuple (call, 5 /* pn_Call_max */);
+ set_Tuple_pred(call, pn_Call_M_regular , mem);
+ set_Tuple_pred(call, pn_Call_T_result , new_Bad());
+ set_Tuple_pred(call, pn_Call_P_value_res_base, new_Bad());
+ set_Tuple_pred(call, pn_Call_X_except , new_Bad()); /* new_Jmp() ?? new_Raise() ?? */
+ set_Tuple_pred(call, pn_Call_M_except , new_Bad());
+
+ } else
+#endif
+ {
set_Call_callee_arr(call, ARR_LEN(arr), arr);
}
DEL_ARR_F(arr);
}
+static void remove_Tuples(ir_node * proj, void * env) {
+ ir_node *new;
+ if (get_irn_opcode(proj) != iro_Proj) return;
+
+ new = skip_Tuple(proj);
+ if (new != proj) exchange(proj, new);
+}
+
+
/* Bestimmt für jede Call-Operation die Menge der aufrufbaren Methode
* und speichert das Ergebnis in der Call-Operation. (siehe
* "set_Call_callee"). "sel_methods" wird für den Aufbau benötigt und
int i;
/* Alle Graphen analysieren. */
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
- irg_walk_graph(get_irp_irg(i), callee_walker, NULL, NULL);
+ irg_walk_graph(get_irp_irg(i), callee_walker, remove_Tuples, NULL);
+ set_irg_callee_info_state(get_irp_irg(i), irg_callee_info_consistent);
}
+ set_irp_callee_info_state(irg_callee_info_consistent);
}
static void free_mark(ir_node * node, eset * set) {
int i;
- assert(get_irn_mode(node) == mode_P);
+ assert(mode_is_reference(get_irn_mode(node)));
if (get_irn_link(node) == MARK) {
return; /* already visited */
}
entity * ent = get_Sel_entity(node);
if (is_method_type(get_entity_type(ent))) {
for (i = get_Sel_n_methods(node) - 1; i >= 0; --i) {
- eset_insert(set, get_Sel_method(node, i));
+ eset_insert(set, get_Sel_method(node, i));
}
}
break;
}
case iro_SymConst:
- /* nothing: SymConst points to extern method */
- break;
- case iro_Const: {
- tarval * val = get_Const_tarval(node);
- entity * ent = val->u.P.ent;
- if (ent != NULL && is_method_type(get_entity_type(ent))) {
- eset_insert(set, ent);
+ if (get_SymConst_kind(node) == symconst_addr_ent) {
+ entity * ent = get_SymConst_entity(node);
+ if (is_method_type(get_entity_type(ent))) {
+ eset_insert(set, ent);
+ }
+ } else {
+ assert(get_SymConst_kind(node) == symconst_addr_name);
+ /* nothing: SymConst points to extern method */
}
break;
- }
+
case iro_Phi:
for (i = get_Phi_n_preds(node) - 1; i >= 0; --i) {
free_mark(get_Phi_pred(node, i), set);
set_irn_link(node, MARK);
for (i = get_Call_arity(node) - 1; i >= 0; --i) {
ir_node * pred = get_Call_param(node, i);
- if (get_irn_mode(pred) == mode_P) {
- free_mark(pred, set);
+ if (mode_is_reference(get_irn_mode(pred))) {
+ free_mark(pred, set);
}
}
break;
set_irn_link(node, MARK);
for (i = get_irn_arity(node) - 1; i >= 0; --i) {
ir_node * pred = get_irn_n(node, i);
- if (get_irn_mode(pred) == mode_P) {
- free_mark(pred, set);
+ if (mode_is_reference(get_irn_mode(pred))) {
+ free_mark(pred, set);
}
}
break;
* SymConst-Operationen müssen in passende Const-Operationen
* umgewandelt worden sein, d.h. SymConst-Operationen verweisen immer
* auf eine echt externe Methode. */
-static entity ** get_free_methods(void) {
+static entity ** get_free_methods(int whole)
+{
eset * set = eset_create();
int i;
entity ** arr = NEW_ARR_F(entity *, 0);
entity * ent;
+
+ if (! whole) {
+ for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
+ ir_graph * irg = get_irp_irg(i);
+ entity * ent = get_irg_entity(irg);
+ /* insert "external visible" methods. */
+ if (get_entity_visibility(ent) != visibility_local) {
+ eset_insert(set, ent);
+ }
+ /* Finde alle Methoden die in dieser Methode extern sichtbar werden,
+ z.B. da die Adresse einer Methode abgespeichert wird. */
+ irg_walk_graph(irg, NULL, (irg_walk_func *) free_ana_walker, set);
+ }
+ }
+
+ /* insert sticky methods, too */
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
ir_graph * irg = get_irp_irg(i);
- entity * ent = get_irg_ent(irg);
+ entity * ent = get_irg_entity(irg);
/* insert "external visible" methods. */
- if (get_entity_visibility(ent) != local) {
+ if (get_entity_stickyness (ent) == stickyness_sticky) {
eset_insert(set, ent);
}
- irg_walk_graph(irg, NULL, (irg_walk_func *) free_ana_walker, set);
}
- /* Hauptprogramm ist auch frei, auch wenn es nicht "external
+
+ /* Hauptprogramm ist auch dann frei, wenn es nicht "external
* visible" ist. */
- if(get_irp_main_irg()) {
- eset_insert(set, get_irg_ent(get_irp_main_irg()));
+ if (get_irp_main_irg()) {
+ eset_insert(set, get_irg_entity(get_irp_main_irg()));
}
+ /* Wandle Menge in Feld um. Effizienter. */
for (ent = eset_first(set); ent; ent = eset_next(set)) {
ARR_APP1(entity *, arr, ent);
}
return arr;
}
-void cgana(int *length, entity ***free_methods) {
+void cgana(int *length, entity ***free_methods, int whole) {
entity ** free_meths;
int i;
sel_methods_init();
- free_meths = get_free_methods();
+ free_meths = get_free_methods(whole);
callee_ana();
sel_methods_dispose();
DEL_ARR_F(free_meths);
}
+
+
+static void destruct_walker(ir_node * node, void * env) {
+ if (get_irn_op(node) == op_Call) {
+ remove_Call_callee_arr(node);
+ }
+}
+
+void free_callee_info(ir_graph *irg) {
+ irg_walk_graph(irg, destruct_walker, NULL, NULL);
+ set_irg_callee_info_state(irg, irg_callee_info_none);
+}
+
+
/* Optimize the address expressions passed to call nodes.
- * Alle SymConst-Operationen, die auf interne Methoden verweisen,
- * werden durch Const-Operationen ersetzt.
- * Sel Knoten deren entitaeten nicht ueberschrieben werden, werden
- * durch Const ersetzt.
- * Sel Knoten, fuer die keine Implementierung existiert, werden
- * durch Bad ersetzt. */
+ *
+ * This optimization performs the following transformations for
+ * all ir graphs:
+ * - All SymConst operations that refer to intern methods are replaced
+ * by Const operations refering to the corresponding entity.
+ * - Sel nodes, that select entities that are not overwritten are
+ * replaced by Const nodes refering to the selected entity.
+ * - Sel nodes, for witch no method exists at all are replaced by Bad
+ * nodes.
+ * - Sel nodes with a pointer input that is an Alloc node are replaced
+ * by Const nodes refering to the entity that implements the method in
+ * the type given by the Alloc node.
+ */
void opt_call_addrs(void) {
sel_methods_init();
sel_methods_dispose();
assert(entities == NULL);
entities = eset_create();
for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
- entity * ent = get_irg_ent(get_irp_irg(i));
+ entity * ent = get_irg_entity(get_irp_irg(i));
/* Nur extern sichtbare Methoden können überhaupt mit SymConst
* aufgerufen werden. */
if (get_entity_visibility(ent) != local) {
projects / libfirm / blobdiff