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/* IPA reference lists.
Copyright (C) 2010-2013 Free Software Foundation, Inc.
Contributed by Jan Hubicka
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
struct cgraph_node;
class varpool_node;
class symtab_node;
/* How the reference is done. */
enum GTY(()) ipa_ref_use
{
IPA_REF_LOAD,
IPA_REF_STORE,
IPA_REF_ADDR,
IPA_REF_ALIAS
};
/* Record of reference in callgraph or varpool. */
struct GTY(()) ipa_ref
{
symtab_node *referring;
symtab_node *referred;
gimple stmt;
unsigned int lto_stmt_uid;
unsigned int referred_index;
ENUM_BITFIELD (ipa_ref_use) use:2;
unsigned int speculative:1;
};
typedef struct ipa_ref ipa_ref_t;
typedef struct ipa_ref *ipa_ref_ptr;
/* List of references. This is stored in both callgraph and varpool nodes. */
struct GTY(()) ipa_ref_list
{
/* Store actual references in references vector. */
vec<ipa_ref_t, va_gc> *references;
/* Referring is vector of pointers to references. It must not live in GGC space
or GGC will try to mark middle of references vectors. */
vec<ipa_ref_ptr> GTY((skip)) referring;
};
struct ipa_ref * ipa_record_reference (symtab_node *,
symtab_node *,
enum ipa_ref_use, gimple);
struct ipa_ref * ipa_maybe_record_reference (symtab_node *, tree,
enum ipa_ref_use, gimple);
void ipa_remove_reference (struct ipa_ref *);
void ipa_remove_all_references (struct ipa_ref_list *);
void ipa_remove_all_referring (struct ipa_ref_list *);
void ipa_dump_references (FILE *, struct ipa_ref_list *);
void ipa_dump_referring (FILE *, struct ipa_ref_list *);
void ipa_clone_references (symtab_node *, struct ipa_ref_list *);
void ipa_clone_referring (symtab_node *, struct ipa_ref_list *);
struct ipa_ref * ipa_clone_ref (struct ipa_ref *, symtab_node *, gimple);
bool ipa_ref_cannot_lead_to_return (struct ipa_ref *);
bool ipa_ref_has_aliases_p (struct ipa_ref_list *);
struct ipa_ref * ipa_find_reference (symtab_node *, symtab_node *, gimple, unsigned int);
void ipa_remove_stmt_references (symtab_node *, gimple);
void ipa_clear_stmts_in_references (symtab_node *);
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