ipa_icf Namespace Reference

Data Structures
class	congruence_class
struct	congruence_class_group
struct	congruence_class_hash
class	pass_ipa_icf
class	sem_function
class	sem_item
class	sem_item_optimizer
struct	sem_usage_hash
class	sem_usage_pair
struct	sem_usage_pair_hash
class	sem_variable
class	symbol_compare_collection
struct	symbol_compare_hash
struct	traverse_split_pair

Typedefs
typedef hash_map< sem_usage_hash, auto_vec< sem_item * > >	ref_map
typedef std::pair< symtab_node *, symtab_node * >	symtab_pair

Enumerations
enum	sem_item_type { FUNC , VAR }

Functions
static bool	set_local (cgraph_node *node, void *data)
static bool	set_addressable (varpool_node *node, void *)
static bool	clear_decl_rtl (symtab_node *node, void *)
static int	redirect_all_callers (cgraph_node *n, cgraph_node *to)
static int	sort_sem_items_by_decl_uid (const void *a, const void *b)
static int	sort_congruence_classes_by_decl_uid (const void *a, const void *b)
static int	sort_congruence_class_groups_by_decl_uid (const void *a, const void *b)
static void	set_alias_uids (symtab_node *n, int uid)
static void	ipa_icf_generate_summary (void)
static void	ipa_icf_write_summary (void)
static void	ipa_icf_read_summary (void)
static unsigned int	ipa_icf_driver (void)

Variables
static sem_item_optimizer *	optimizer = NULL
const pass_data	pass_data_ipa_icf

Detailed Description

Interprocedural semantic function equality pass
   Copyright (C) 2014-2025 Free Software Foundation, Inc.

   Contributed by Jan Hubicka <hubicka@ucw.cz> and Martin Liska <mliska@suse.cz>

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/>.   

Typedef Documentation

ref_map

typedef hash_map<sem_usage_hash, auto_vec<sem_item *> > ipa_icf::ref_map

symtab_pair

typedef std::pair<symtab_node *, symtab_node *> ipa_icf::symtab_pair

Enumeration Type Documentation

sem_item_type

enum ipa_icf::sem_item_type

Semantic item type enum.   

Enumerator
FUNC
VAR

Function Documentation

clear_decl_rtl()

static bool ipa_icf::clear_decl_rtl ( symtab_node * node, void *  )

static

Clear DECL_RTL of NODE.
Helper for call_for_symbol_thunks_and_aliases.   

References symtab_node::decl, NULL, and SET_DECL_RTL.

Referenced by ipa_icf::sem_function::merge(), and ipa_icf::sem_variable::merge().

ipa_icf_driver()

static unsigned int ipa_icf::ipa_icf_driver ( void )

static

Semantic equality execution function.   

References gcc_assert, NULL, optimizer, and TODO_remove_functions.

Referenced by ipa_icf::pass_ipa_icf::execute().

ipa_icf_generate_summary()

static void ipa_icf::ipa_icf_generate_summary ( void )

static

Generate pass summary for IPA ICF pass.   

References optimizer.

Referenced by ipa_icf::pass_ipa_icf::pass_ipa_icf().

ipa_icf_read_summary()

static void ipa_icf::ipa_icf_read_summary ( void )

static

Read pass summary for IPA ICF pass.   

References optimizer.

Referenced by ipa_icf::pass_ipa_icf::pass_ipa_icf().

ipa_icf_write_summary()

static void ipa_icf::ipa_icf_write_summary ( void )

static

Write pass summary for IPA ICF pass.   

References gcc_assert, and optimizer.

Referenced by ipa_icf::pass_ipa_icf::pass_ipa_icf().

redirect_all_callers()

static int ipa_icf::redirect_all_callers ( cgraph_node * n, cgraph_node * to )

static

Redirect all callers of N and its aliases to TO.  Remove aliases if
possible.  Return number of redirections made.   

References AVAIL_INTERPOSABLE, cgraph_node::call_for_symbol_and_aliases(), cgraph_edge::caller, cgraph_node::callers, cgraph_node::can_remove_if_no_direct_calls_p(), symtab_node::decl, DECL_COMDAT_GROUP, dyn_cast(), cgraph_node::get_availability(), symtab_node::has_aliases_p(), cgraph_node::has_thunk_p(), i, symtab_node::iterate_direct_aliases(), cgraph_edge::next_callee, cgraph_edge::next_caller, NULL, redirect_all_callers(), cgraph_edge::redirect_callee(), ipa_ref::referring, cgraph_node::remove(), and cgraph_node::thunk.

Referenced by ipa_icf::sem_function::merge(), and redirect_all_callers().

set_addressable()

static bool ipa_icf::set_addressable ( varpool_node * node, void *  )

static

TREE_ADDRESSABLE of NODE to true.
Helper for call_for_symbol_thunks_and_aliases.   

References symtab_node::decl, and TREE_ADDRESSABLE.

Referenced by ipa_icf::sem_variable::merge().

set_alias_uids()

static void ipa_icf::set_alias_uids ( symtab_node * n, int uid )

static

Set all points-to UIDs of aliases pointing to node N as UID.   

References symtab_node::decl, symtab_node::dump_asm_name(), dump_file, FOR_EACH_ALIAS, ipa_ref::referring, set_alias_uids(), and SET_DECL_PT_UID.

Referenced by ipa_icf::sem_item_optimizer::fixup_points_to_sets(), and set_alias_uids().

set_local()

static bool ipa_icf::set_local ( cgraph_node * node, void * data )

static

Set LOCAL_P of NODE to true if DATA is non-NULL.
Helper for call_for_symbol_thunks_and_aliases.   

References cgraph_node::local, and NULL.

Referenced by ipa_icf::sem_function::merge().

sort_congruence_class_groups_by_decl_uid()

static int ipa_icf::sort_congruence_class_groups_by_decl_uid ( const void * a, const void * b )

static

Sort pair of congruence_class_groups A and B by
DECL_UID of the first member of a first group.   

References a, and b.

Referenced by ipa_icf::sem_item_optimizer::merge_classes().

sort_congruence_classes_by_decl_uid()

static int ipa_icf::sort_congruence_classes_by_decl_uid ( const void * a, const void * b )

static

Sort pair of congruence_classes A and B by DECL_UID of the first member.   

References a, b, DECL_UID, and ipa_icf::congruence_class::members.

Referenced by ipa_icf::sem_item_optimizer::merge_classes().

sort_sem_items_by_decl_uid()

static int ipa_icf::sort_sem_items_by_decl_uid ( const void * a, const void * b )

static

Sort pair of sem_items A and B by DECL_UID.   

References a, b, DECL_UID, i1, and i2.

Referenced by ipa_icf::sem_item_optimizer::merge_classes().

Variable Documentation

optimizer

sem_item_optimizer* ipa_icf::optimizer = NULL

static

Initialization and computation of symtab node hash, there data
are propagated later on.   

Referenced by ipa_icf::sem_item_optimizer::cgraph_removal_hook(), ipa_icf_cc_finalize(), ipa_icf_driver(), ipa_icf_generate_summary(), ipa_icf_read_summary(), ipa_icf_write_summary(), ipa_icf::sem_item_optimizer::traverse_congruence_split(), and ipa_icf::sem_item_optimizer::varpool_removal_hook().

pass_data_ipa_icf

const pass_data ipa_icf::pass_data_ipa_icf

Initial value:

=
{
  IPA_PASS,                 
  "icf",                    
  OPTGROUP_IPA,             
  TV_IPA_ICF,               
  0,                        
  0,                        
  0,                        
  0,                        
  0,                        
}

Referenced by ipa_icf::pass_ipa_icf::pass_ipa_icf().