Functions
struct varpool_node *	varpool_create_empty_node ()
struct varpool_node *	varpool_node_for_decl ()
void	varpool_remove_node ()
void	varpool_remove_initializer ()
void	dump_varpool_node ()
void	dump_varpool ()
DEBUG_FUNCTION void	debug_varpool ()
struct varpool_node *	varpool_node_for_asm ()
tree	ctor_for_folding ()
void	varpool_add_new_variable ()
enum availability	cgraph_variable_initializer_availability ()
void	varpool_analyze_node ()
static void	assemble_aliases ()
bool	varpool_assemble_decl ()
static void	enqueue_node ()
static void	varpool_remove_unreferenced_decls ()
void	varpool_finalize_named_section_flags ()
bool	varpool_output_variables ()
tree	add_new_static_var ()
struct varpool_node *	varpool_create_variable_alias ()
struct varpool_node *	varpool_extra_name_alias ()
bool	varpool_for_node_and_aliases (struct varpool_node node, bool(callback)(struct varpool_node , void ), void *data, bool include_overwritable)

Function Documentation

tree add_new_static_var ( )

Create a new global variable of type TYPE.

References create_tmp_var_name(), create_tmp_var_raw(), symtab_node_base::decl, lang_hooks::dup_lang_specific_decl, varpool_node::symbol, varpool_finalize_decl(), and varpool_node_for_decl().

static void assemble_aliases ( )

static

Assemble thunks and aliases associated to NODE.

References symtab_node_base::decl, do_assemble_alias(), IPA_REF_ALIAS, ipa_ref_referring_varpool_node(), symtab_node_base::ref_list, and varpool_node::symbol.

Referenced by varpool_assemble_decl().

enum availability cgraph_variable_initializer_availability ( )

Return variable availability.  See cgraph.h for description of individual
   return values.

References AVAIL_AVAILABLE, AVAIL_NOT_AVAILABLE, AVAIL_OVERWRITABLE, cgraph_function_flags_ready, symtab_node_base::decl, decl_replaceable_p(), symtab_node_base::definition, and varpool_node::symbol.

tree ctor_for_folding ( )

Return if DECL is constant and its initial value is known (so we can do
   constant folding using DECL_INITIAL (decl)).
   Return ERROR_MARK_NODE when value is unknown.

References symtab_node_base::decl, decl_replaceable_p(), lookup_attribute(), varpool_node::symbol, varpool_alias_target(), varpool_get_node(), and varpool_variable_node().

DEBUG_FUNCTION void debug_varpool ( void )

Dump the variable pool to stderr.

References dump_varpool().

void dump_varpool ( )

Dump the variable pool.

References dump_varpool_node().

void dump_varpool_node ( )

Dump given cgraph node.

References cgraph_availability_names, cgraph_function_flags_ready, cgraph_variable_initializer_availability(), ctor_for_folding(), and dump_symtab_base().

static void enqueue_node ( )

static

Add NODE to queue starting at FIRST. 
   The queue is linked via AUX pointers and terminated by pointer to 1.

References symtab_node_base::aux, first, and varpool_node::symbol.

Referenced by varpool_remove_unreferenced_decls().

void varpool_add_new_variable ( )

Add the variable DECL to the varpool.
   Unlike varpool_finalize_decl function is intended to be used
   by middle end and allows insertion of new variable at arbitrary point
   of compilation.

References symtab_node_base::externally_visible, varpool_node::symbol, varpool_externally_visible_p(), varpool_finalize_decl(), and varpool_node_for_decl().

void varpool_analyze_node ( )

References symtab_node_base::alias, align_variable(), symtab_node_base::analyzed, cgraph_function_flags_ready, symtab_node_base::decl, record_references_in_initializer(), varpool_node::symbol, symtab_resolve_alias(), and varpool_get_node().

bool varpool_assemble_decl ( )

Output one variable, if necessary.  Return whether we output it.

References symtab_node_base::alias, assemble_aliases(), assemble_variable(), symtab_node_base::decl, symtab_node_base::definition, symtab_node_base::in_other_partition, varpool_node::symbol, and targetm.

struct varpool_node* varpool_create_empty_node ( void )

read

@verbatim Callgraph handling code.

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/.

Allocate new callgraph node and insert it into basic data structures.

References varpool_node::symbol, and SYMTAB_VARIABLE.

Referenced by input_varpool_node(), and varpool_node_for_decl().

struct varpool_node* varpool_create_variable_alias ( )

read

Attempt to mark ALIAS as an alias to DECL.  Return TRUE if successful.
   Extra name aliases are output whenever DECL is output.

References symtab_node_base::alias, symtab_node_base::alias_target, symtab_node_base::definition, lookup_attribute(), varpool_node::symbol, varpool_node_for_decl(), and symtab_node_base::weakref.

struct varpool_node* varpool_extra_name_alias ( )

read

Attempt to mark ALIAS as an alias to DECL.  Return TRUE if successful.
   Extra name aliases are output whenever DECL is output.

References symtab_node_base::cpp_implicit_alias, cpp_implicit_aliases_done, varpool_node::symbol, symtab_resolve_alias(), varpool_create_variable_alias(), and varpool_node_for_decl().

void varpool_finalize_named_section_flags ( )

For variables in named sections make sure get_variable_section
   is called before we switch to those sections.  Then section
   conflicts between read-only and read-only requiring relocations
   sections can be resolved.

References symtab_node_base::alias, symtab_node_base::decl, get_variable_section(), symtab_node_base::in_other_partition, and varpool_node::symbol.

bool varpool_for_node_and_aliases	(	struct varpool_node *	node,
		bool()(struct varpool_node , void *)	callback,
		void *	data,
		bool	include_overwritable
	)

Call calback on NODE and aliases associated to NODE. 
   When INCLUDE_OVERWRITABLE is false, overwritable aliases and thunks are
   skipped.

References AVAIL_OVERWRITABLE, cgraph_variable_initializer_availability(), IPA_REF_ALIAS, ipa_ref_referring_varpool_node(), symtab_node_base::ref_list, varpool_node::symbol, and varpool_for_node_and_aliases().

Referenced by ipa_lower_emutls(), and varpool_for_node_and_aliases().

struct varpool_node* varpool_node_for_asm ( )

read

Given an assembler name, lookup node.

References dyn_cast(), and symtab_node_for_asm().

struct varpool_node* varpool_node_for_decl ( )

read

Return varpool node assigned to DECL.  Create new one when needed.

References symtab_node_base::decl, varpool_node::symbol, symtab_register_node(), varpool_create_empty_node(), and varpool_get_node().

bool varpool_output_variables ( void )

Output all variables enqueued to be assembled.

References changed, seen_error(), timevar_pop(), timevar_push(), varpool_assemble_decl(), varpool_finalize_named_section_flags(), and varpool_remove_unreferenced_decls().

Referenced by compile().

void varpool_remove_initializer ( )

Renove node initializer when it is no longer needed.

References CGRAPH_LTO_STREAMING, symtab_node_base::decl, DINFO_LEVEL_NONE, and varpool_node::symbol.

void varpool_remove_node ( )

Remove node from the varpool.

References ctor_for_folding(), ggc_free(), symtab_unregister_node(), and varpool_remove_initializer().

static void varpool_remove_unreferenced_decls ( )

static

Optimization of function bodies might've rendered some variables as
   unnecessary so we want to avoid these from being compiled.  Re-do
   reachability starting from variables that are either externally visible
   or was referred from the asm output routines.

References symtab_node_base::alias, symtab_node_base::analyzed, symtab_node_base::aux, cgraph_dump_file, symtab_node_base::decl, dyn_cast(), enqueue_node(), first, symtab_node_base::ref_list, ipa_ref::referred, symtab_node_base::same_comdat_group, seen_error(), varpool_node::symbol, varpool_can_remove_if_no_refs(), varpool_first_defined_variable(), varpool_next_defined_variable(), varpool_node_asm_name(), and varpool_remove_node().

Referenced by varpool_output_variables().

Functions

Function Documentation