/* Utilities for ipa analysis.
- Copyright (C) 2004-2014 Free Software Foundation, Inc.
+ Copyright (C) 2004-2015 Free Software Foundation, Inc.
Contributed by Kenneth Zadeck <zadeck@naturalbridge.com>
This file is part of GCC.
#ifndef GCC_IPA_UTILS_H
#define GCC_IPA_UTILS_H
-#include "cgraph.h"
struct ipa_dfs_info {
int dfn_number;
PTR aux;
};
-/* Context of polymorphic call. This is used by ipa-devirt walkers of the
- type inheritance graph. */
-struct ipa_polymorphic_call_context {
- /* The called object appears in an object of type OUTER_TYPE
- at offset OFFSET. */
- HOST_WIDE_INT offset;
- tree outer_type;
- /* True if outer object may be in construction or destruction. */
- bool maybe_in_construction;
- /* True if outer object may be of derived type. */
- bool maybe_derived_type;
-};
-
-/* Context representing "I know nothing". */
-extern const ipa_polymorphic_call_context ipa_dummy_polymorphic_call_context;
/* In ipa-utils.c */
void ipa_print_order (FILE*, const char *, struct cgraph_node**, int);
int ipa_reduced_postorder (struct cgraph_node **, bool, bool,
bool (*ignore_edge) (struct cgraph_edge *));
void ipa_free_postorder_info (void);
-vec<cgraph_node_ptr> ipa_get_nodes_in_cycle (struct cgraph_node *);
+vec<cgraph_node *> ipa_get_nodes_in_cycle (struct cgraph_node *);
bool ipa_edge_within_scc (struct cgraph_edge *);
int ipa_reverse_postorder (struct cgraph_node **);
tree get_base_var (tree);
void ipa_merge_profiles (struct cgraph_node *dst,
- struct cgraph_node *src);
+ struct cgraph_node *src, bool preserve_body = false);
bool recursive_call_p (tree, tree);
/* In ipa-profile.c */
vec <cgraph_node *>
possible_polymorphic_call_targets (tree, HOST_WIDE_INT,
ipa_polymorphic_call_context,
- bool *final = NULL,
- void **cache_token = NULL);
+ bool *copletep = NULL,
+ void **cache_token = NULL,
+ bool speuclative = false);
odr_type get_odr_type (tree, bool insert = false);
+bool type_in_anonymous_namespace_p (const_tree);
+bool type_with_linkage_p (const_tree);
+bool odr_type_p (const_tree);
+bool possible_polymorphic_call_target_p (tree ref, gimple stmt, struct cgraph_node *n);
void dump_possible_polymorphic_call_targets (FILE *, tree, HOST_WIDE_INT,
const ipa_polymorphic_call_context &);
bool possible_polymorphic_call_target_p (tree, HOST_WIDE_INT,
const ipa_polymorphic_call_context &,
- struct cgraph_node *n);
-tree method_class_type (tree);
-tree get_polymorphic_call_info (tree, tree, tree *,
- HOST_WIDE_INT *,
- ipa_polymorphic_call_context *);
-tree vtable_pointer_value_to_binfo (tree t);
-bool vtable_pointer_value_to_vtable (tree, tree *, unsigned HOST_WIDE_INT *);
+ struct cgraph_node *);
+tree inlined_polymorphic_ctor_dtor_block_p (tree, bool);
+bool decl_maybe_in_construction_p (tree, tree, gimple, tree);
+tree vtable_pointer_value_to_binfo (const_tree);
+bool vtable_pointer_value_to_vtable (const_tree, tree *, unsigned HOST_WIDE_INT *);
+tree subbinfo_with_vtable_at_offset (tree, unsigned HOST_WIDE_INT, tree);
+void compare_virtual_tables (varpool_node *, varpool_node *);
+bool type_all_derivations_known_p (const_tree);
+bool type_known_to_have_no_derivations_p (tree);
+bool contains_polymorphic_type_p (const_tree);
+void register_odr_type (tree);
+bool types_must_be_same_for_odr (tree, tree);
+bool types_odr_comparable (tree, tree, bool strict = false);
+cgraph_node *try_speculative_devirtualization (tree, HOST_WIDE_INT,
+ ipa_polymorphic_call_context);
+void warn_types_mismatch (tree t1, tree t2, location_t loc1 = UNKNOWN_LOCATION,
+ location_t loc2 = UNKNOWN_LOCATION);
+bool odr_or_derived_type_p (const_tree t);
+bool odr_types_equivalent_p (tree type1, tree type2);
/* Return vector containing possible targets of polymorphic call E.
- If FINALP is non-NULL, store true if the list is complette.
+ If COMPLETEP is non-NULL, store true if the list is complete.
CACHE_TOKEN (if non-NULL) will get stored to an unique ID of entry
in the target cache. If user needs to visit every target list
just once, it can memoize them.
inline vec <cgraph_node *>
possible_polymorphic_call_targets (struct cgraph_edge *e,
- bool *final = NULL,
- void **cache_token = NULL)
+ bool *completep = NULL,
+ void **cache_token = NULL,
+ bool speculative = false)
{
- gcc_checking_assert (e->indirect_info->polymorphic);
- ipa_polymorphic_call_context context = {e->indirect_info->offset,
- e->indirect_info->outer_type,
- e->indirect_info->maybe_in_construction,
- e->indirect_info->maybe_derived_type};
+ ipa_polymorphic_call_context context(e);
+
return possible_polymorphic_call_targets (e->indirect_info->otr_type,
e->indirect_info->otr_token,
context,
- final, cache_token);
+ completep, cache_token,
+ speculative);
}
/* Same as above but taking OBJ_TYPE_REF as an parameter. */
inline vec <cgraph_node *>
-possible_polymorphic_call_targets (tree call,
- bool *final = NULL,
+possible_polymorphic_call_targets (tree ref,
+ gimple call,
+ bool *completep = NULL,
void **cache_token = NULL)
{
- tree otr_type;
- HOST_WIDE_INT otr_token;
- ipa_polymorphic_call_context context;
-
- get_polymorphic_call_info (current_function_decl,
- call,
- &otr_type, &otr_token, &context);
- return possible_polymorphic_call_targets (obj_type_ref_class (call),
+ ipa_polymorphic_call_context context (current_function_decl, ref, call);
+
+ return possible_polymorphic_call_targets (obj_type_ref_class (ref),
tree_to_uhwi
- (OBJ_TYPE_REF_TOKEN (call)),
+ (OBJ_TYPE_REF_TOKEN (ref)),
context,
- final, cache_token);
+ completep, cache_token);
}
/* Dump possible targets of a polymorphic call E into F. */
inline void
dump_possible_polymorphic_call_targets (FILE *f, struct cgraph_edge *e)
{
- gcc_checking_assert (e->indirect_info->polymorphic);
- ipa_polymorphic_call_context context = {e->indirect_info->offset,
- e->indirect_info->outer_type,
- e->indirect_info->maybe_in_construction,
- e->indirect_info->maybe_derived_type};
+ ipa_polymorphic_call_context context(e);
+
dump_possible_polymorphic_call_targets (f, e->indirect_info->otr_type,
e->indirect_info->otr_token,
context);
possible_polymorphic_call_target_p (struct cgraph_edge *e,
struct cgraph_node *n)
{
- ipa_polymorphic_call_context context = {e->indirect_info->offset,
- e->indirect_info->outer_type,
- e->indirect_info->maybe_in_construction,
- e->indirect_info->maybe_derived_type};
+ ipa_polymorphic_call_context context(e);
+
return possible_polymorphic_call_target_p (e->indirect_info->otr_type,
e->indirect_info->otr_token,
context, n);
}
-/* Return true if N can be possibly target of a polymorphic call of
- OBJ_TYPE_REF expression CALL. */
+/* Return true if BINFO corresponds to a type with virtual methods.
+
+ Every type has several BINFOs. One is the BINFO associated by the type
+ while other represents bases of derived types. The BINFOs representing
+ bases do not have BINFO_VTABLE pointer set when this is the single
+ inheritance (because vtables are shared). Look up the BINFO of type
+ and check presence of its vtable. */
inline bool
-possible_polymorphic_call_target_p (tree call,
- struct cgraph_node *n)
+polymorphic_type_binfo_p (const_tree binfo)
{
- return possible_polymorphic_call_target_p (obj_type_ref_class (call),
- tree_to_uhwi
- (OBJ_TYPE_REF_TOKEN (call)),
- ipa_dummy_polymorphic_call_context,
- n);
+ /* See if BINFO's type has an virtual table associtated with it.
+ Check is defensive because of Java FE produces BINFOs
+ without BINFO_TYPE set. */
+ return (BINFO_TYPE (binfo) && TYPE_BINFO (BINFO_TYPE (binfo))
+ && BINFO_VTABLE (TYPE_BINFO (BINFO_TYPE (binfo))));
}
#endif /* GCC_IPA_UTILS_H */
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