coverage.cc File Reference

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "backend.h"
#include "target.h"
#include "rtl.h"
#include "tree.h"
#include "tree-pass.h"
#include "memmodel.h"
#include "tm_p.h"
#include "stringpool.h"
#include "cgraph.h"
#include "coverage.h"
#include "diagnostic-core.h"
#include "fold-const.h"
#include "stor-layout.h"
#include "output.h"
#include "toplev.h"
#include "langhooks.h"
#include "tree-iterator.h"
#include "context.h"
#include "pass_manager.h"
#include "intl.h"
#include "auto-profile.h"
#include "profile.h"
#include "diagnostic.h"
#include "varasm.h"
#include "file-prefix-map.h"
#include "gcov-io.cc"
#include "gcov-counter.def"
#include "gt-coverage.h"

Include dependency graph for coverage.cc:

Data Structures
struct	coverage_data
struct	counts_entry

Macros
#define	GCOV_LINKAGE
#define	STR(str)
#define	DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE)
#define	DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE)

Functions
static tree	build_var (tree, tree, int)
tree	get_gcov_type (void)
static tree	get_gcov_unsigned_t (void)
static void	read_counts_file (void)
gcov_type *	get_coverage_counts (unsigned counter, unsigned cfg_checksum, unsigned lineno_checksum, unsigned int n_counts)
int	coverage_counter_alloc (unsigned counter, unsigned num)
tree	tree_coverage_counter_ref (unsigned counter, unsigned no)
tree	tree_coverage_counter_addr (unsigned counter, unsigned no)
static unsigned	coverage_checksum_string (unsigned chksum, const char *string)
unsigned	coverage_compute_lineno_checksum (void)
unsigned	coverage_compute_profile_id (struct cgraph_node *n)
unsigned	coverage_compute_cfg_checksum (struct function *fn)
int	coverage_begin_function (unsigned lineno_checksum, unsigned cfg_checksum)
void	coverage_end_function (unsigned lineno_checksum, unsigned cfg_checksum)
void	coverage_remove_note_file (void)
static void	build_fn_info_type (tree type, unsigned counters, tree gcov_info_type)
static tree	build_fn_info (const struct coverage_data *data, tree type, tree key)
static void	build_info_type (tree type, tree fn_info_ptr_type)
static tree	build_info (tree info_type, tree fn_ary, unsigned object_checksum)
static void	build_init_ctor (tree gcov_info_type)
static void	build_gcov_exit_decl (void)
static void	build_gcov_info_var_registration (tree gcov_info_type)
static bool	coverage_obj_init (void)
static vec< constructor_elt, va_gc > *	coverage_obj_fn (vec< constructor_elt, va_gc > *ctor, tree fn, struct coverage_data const *data)
static void	coverage_obj_finish (vec< constructor_elt, va_gc > *ctor, unsigned object_checksum)
void	coverage_init (const char *filename)
void	coverage_finish (void)

Variables
static struct coverage_data *	functions_head = 0
static struct coverage_data **	functions_tail = &functions_head
static unsigned	no_coverage = 0
static unsigned	prg_ctr_mask
static unsigned	fn_ctr_mask
static tree	fn_v_ctrs [GCOV_COUNTERS]
static unsigned	fn_n_ctrs [GCOV_COUNTERS]
static unsigned	fn_b_ctrs [GCOV_COUNTERS]
static tree	gcov_info_var
static tree	gcov_fn_info_type
static tree	gcov_fn_info_ptr_type
static char *	bbg_file_name
static unsigned	bbg_file_stamp
static char *	da_file_name
static const char *const	ctr_merge_functions [GCOV_COUNTERS]
static const char *const	ctr_names [GCOV_COUNTERS]
static hash_table< counts_entry > *	counts_hash

Macro Definition Documentation

DEF_GCOV_COUNTER [1/2]

#define DEF_GCOV_COUNTER	(		COUNTER,
			NAME,
			FN_TYPE )

Value:

STR(__gcov_merge ## FN_TYPE),

DEF_GCOV_COUNTER [2/2]

#define DEF_GCOV_COUNTER	(		COUNTER,
			NAME,
			FN_TYPE )

Value:

NAME,

GCOV_LINKAGE

#define GCOV_LINKAGE

Read and write coverage files, and associated functionality.
   Copyright (C) 1990-2024 Free Software Foundation, Inc.
   Contributed by James E. Wilson, UC Berkeley/Cygnus Support;
   based on some ideas from Dain Samples of UC Berkeley.
   Further mangling by Bob Manson, Cygnus Support.
   Further mangled by Nathan Sidwell, CodeSourcery

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/>.   

STR

#define STR

(

str

)

Value:

#str

The names of merge functions for counters.   

Function Documentation

build_fn_info()

static tree build_fn_info ( const struct coverage_data * data, tree type, tree key )

static

Returns a CONSTRUCTOR for a gcov_fn_info.  DATA is
the coverage data for the function and TYPE is the gcov_fn_info
RECORD_TYPE.  KEY is the object file key.   

References build1(), build_constructor(), build_fold_addr_expr, build_int_cstu(), CONSTRUCTOR_APPEND_ELT, count, DECL_CHAIN, fields, GCOV_COUNTERS, get_gcov_unsigned_t(), NULL, prg_ctr_mask, tree_to_shwi(), TREE_TYPE, TYPE_DOMAIN, TYPE_FIELDS, and TYPE_MAX_VALUE.

Referenced by coverage_obj_fn().

build_fn_info_type()

static void build_fn_info_type ( tree type, unsigned counters, tree gcov_info_type )

static

Creates the gcov_fn_info RECORD_TYPE.   

References build_array_type(), build_decl(), build_index_type(), build_pointer_type(), build_qualified_type(), BUILTINS_LOCATION, DECL_CHAIN, fields, finish_builtin_struct(), gcc_assert, get_gcov_type(), get_gcov_unsigned_t(), lang_hooks_for_types::make_type, NULL_TREE, size_int, TYPE_QUAL_CONST, and lang_hooks::types.

Referenced by coverage_obj_init().

build_gcov_exit_decl()

static void build_gcov_exit_decl ( void )

static

Generate the destructor function to call __gcov_exit.   

References append_to_statement_list(), build_call_expr(), build_decl(), build_function_type_list(), BUILTINS_LOCATION, cgraph_build_static_cdtor(), DECL_ASSEMBLER_NAME, DECL_EXTERNAL, DEFAULT_INIT_PRIORITY, get_identifier(), MAX_RESERVED_INIT_PRIORITY, NULL, SUPPORTS_INIT_PRIORITY, TREE_PUBLIC, and void_type_node.

Referenced by coverage_obj_init().

build_gcov_info_var_registration()

static void build_gcov_info_var_registration ( tree gcov_info_type )

static

Generate the pointer to the gcov_info_var in a dedicated section.   

References build_decl(), build_fold_addr_expr, build_pointer_type(), BUILTINS_LOCATION, DECL_INITIAL, DECL_NAME, varpool_node::finalize_decl(), gcov_info_var, get_identifier(), get_section(), mark_decl_referenced(), NULL, NULL_TREE, SECTION_UNNAMED, set_decl_section_name(), TREE_READONLY, and TREE_STATIC.

Referenced by coverage_obj_init().

build_info()

static tree build_info ( tree info_type, tree fn_ary, unsigned object_checksum )

static

Returns a CONSTRUCTOR for the gcov_info object.  INFO_TYPE is the
gcov_info structure type, FN_ARY is the array of pointers to
function info objects.   

References bbg_file_stamp, build1(), build_array_type(), build_constructor(), build_decl(), build_index_type(), build_int_cstu(), build_string(), BUILTINS_LOCATION, char_type_node, CONSTRUCTOR_APPEND_ELT, ctr_merge_functions, da_file_name, DECL_ARTIFICIAL, DECL_ASSEMBLER_NAME, DECL_CHAIN, DECL_EXTERNAL, fold_build2, gcc_assert, GCOV_COUNTERS, get_identifier(), NULL, null_pointer_node, prg_ctr_mask, size_int, size_one_node, TREE_NOTHROW, TREE_PUBLIC, TREE_TYPE, TYPE_DOMAIN, TYPE_FIELDS, and TYPE_MAX_VALUE.

Referenced by coverage_obj_finish().

build_info_type()

static void build_info_type ( tree type, tree fn_info_ptr_type )

static

Create gcov_info struct.  TYPE is the incomplete RECORD_TYPE to be
completed, and FN_INFO_PTR_TYPE is a pointer to the function info type.   

References build_array_type(), build_decl(), build_function_type_list(), build_index_type(), build_pointer_type(), build_qualified_type(), BUILTINS_LOCATION, char_type_node, DECL_CHAIN, fields, finish_builtin_struct(), GCOV_COUNTERS, get_gcov_type(), get_gcov_unsigned_t(), NULL_TREE, size_int, TYPE_QUAL_CONST, and void_type_node.

Referenced by coverage_obj_init().

build_init_ctor()

static void build_init_ctor ( tree gcov_info_type )

static

Generate the constructor function to call __gcov_init.   

References append_to_statement_list(), build_call_expr(), build_decl(), build_fold_addr_expr, build_function_type_list(), build_pointer_type(), BUILTINS_LOCATION, cgraph_build_static_cdtor(), DECL_ASSEMBLER_NAME, DECL_EXTERNAL, DEFAULT_INIT_PRIORITY, gcov_info_var, get_identifier(), MAX_RESERVED_INIT_PRIORITY, NULL, SUPPORTS_INIT_PRIORITY, TREE_PUBLIC, and void_type_node.

Referenced by coverage_obj_init().

build_var()

static tree build_var ( tree fn_decl, tree type, int counter )

static

Forward declarations.   

Build a coverage variable of TYPE for function FN_DECL.  If COUNTER
>= 0 it is a counter array, otherwise it is the function structure.   

References build_decl(), BUILTINS_LOCATION, DECL_ASSEMBLER_NAME, DECL_NAME, DECL_NONALIASED, coverage_data::fn_decl, get_identifier(), IDENTIFIER_POINTER, NULL_TREE, SET_DECL_ALIGN, symbol_table::symbol_suffix_separator(), targetm, TREE_ADDRESSABLE, TREE_STATIC, and TYPE_ALIGN.

Referenced by coverage_counter_alloc(), and coverage_obj_fn().

coverage_begin_function()

int coverage_begin_function	(	unsigned	lineno_checksum,
		unsigned	cfg_checksum )

Begin output to the notes file for the current function.
Writes the function header. Returns nonzero if data should be output.   

References bbg_file_name, cfun, coverage_node_map_initialized_p(), current_function_decl, current_function_funcdef_no, DECL_ARTIFICIAL, DECL_ASSEMBLER_NAME, DECL_FUNCTION_VERSIONED, DECL_LAMBDA_FUNCTION_P, DECL_SOURCE_LOCATION, expand_location(), gcc_assert, gcov_is_error(), GCOV_TAG_FUNCTION, gcov_write_filename(), gcov_write_length(), gcov_write_string(), gcov_write_tag(), gcov_write_unsigned(), cgraph_node::get(), IDENTIFIER_POINTER, no_coverage, offset, remap_profile_filename(), and warning_at().

Referenced by branch_prob().

coverage_checksum_string()

static unsigned coverage_checksum_string ( unsigned chksum, const char * string )

static

Generate a checksum for a string.  CHKSUM is the current
checksum.   

References crc32_string(), free(), i, NULL, offset, startswith(), and y.

Referenced by coverage_compute_lineno_checksum(), and coverage_compute_profile_id().

coverage_compute_cfg_checksum()

unsigned coverage_compute_cfg_checksum

(

struct function *

fn

)

Compute cfg checksum for the function FN given as argument.
The checksum is calculated carefully so that
source code changes that doesn't affect the control flow graph
won't change the checksum.
This is to make the profile data useable across source code change.
The downside of this is that the compiler may use potentially
wrong profile data - that the source code change has non-trivial impact
on the validity of profile data (e.g. the reversed condition)
but the compiler won't detect the change and use the wrong profile data.   

References crc32_byte(), FOR_EACH_BB_FN, FOR_EACH_EDGE, basic_block_def::index, n_basic_blocks_for_fn, and basic_block_def::succs.

Referenced by branch_prob(), and ipa_icf::sem_function::init().

coverage_compute_lineno_checksum()

unsigned coverage_compute_lineno_checksum

(

void

)

Compute checksum for the current function.  We generate a CRC32.   

References coverage_checksum_string(), current_function_decl, DECL_ASSEMBLER_NAME, DECL_SOURCE_LOCATION, expand_location(), and IDENTIFIER_POINTER.

Referenced by branch_prob().

coverage_compute_profile_id()

unsigned coverage_compute_profile_id

(

struct cgraph_node *

n

)

Compute profile ID.  This is better to be unique in whole program.   

References coverage_checksum_string(), symtab_node::decl, DECL_ASSEMBLER_NAME, DECL_EXTERNAL, DECL_SOURCE_LOCATION, endswith(), expand_location(), first_global_object_name, free(), IDENTIFIER_POINTER, TREE_PUBLIC, and symtab_node::unique_name.

Referenced by init_node_map().

coverage_counter_alloc()

int coverage_counter_alloc	(	unsigned	counter,
		unsigned	num )

Allocate NUM counters of type COUNTER. Returns nonzero if the
allocation succeeded.   

References build_array_type(), build_var(), current_function_decl, fn_b_ctrs, fn_ctr_mask, fn_n_ctrs, fn_v_ctrs, get_gcov_type(), no_coverage, and NULL_TREE.

Referenced by branch_prob(), and instrument_values().

coverage_end_function()

void coverage_end_function	(	unsigned	lineno_checksum,
		unsigned	cfg_checksum )

Finish coverage data for the current function. Verify no output
error has occurred.  Save function coverage counts.   

References bbg_file_name, build_array_type(), build_index_type(), coverage_data::cfg_checksum, cfun, coverage_node_map_initialized_p(), coverage_data::ctr_vars, current_function_decl, current_function_funcdef_no, DECL_SIZE, DECL_SIZE_UNIT, varpool_node::finalize_decl(), fn_b_ctrs, fn_ctr_mask, coverage_data::fn_decl, fn_n_ctrs, fn_v_ctrs, functions_tail, gcc_assert, GCOV_COUNTERS, gcov_is_error(), cgraph_node::get(), get_gcov_type(), ggc_alloc(), i, coverage_data::ident, coverage_data::lineno_checksum, coverage_data::next, NULL, NULL_TREE, prg_ctr_mask, cgraph_node::profile_id, size_int, TREE_TYPE, TYPE_SIZE, TYPE_SIZE_UNIT, and warning().

Referenced by branch_prob().

coverage_finish()

void coverage_finish

(

void

)

Performs file-level cleanup.  Close notes file, generate coverage
variables and constructor.   

References bbg_file_name, coverage_data::cfg_checksum, coverage_obj_finish(), coverage_obj_fn(), coverage_obj_init(), crc32_unsigned(), da_file_name, coverage_data::fn_decl, functions_head, gcov_close(), coverage_data::ident, coverage_data::lineno_checksum, local_tick, coverage_data::next, and NULL.

Referenced by ipa_passes().

coverage_init()

void coverage_init

(

const char *

filename

)

Perform file-level initialization. Read in data file, generate name
of notes file.   

References bbg_file_name, bbg_file_stamp, da_file_name, gcc::dump_manager::dump_finish(), gcc::dump_manager::dump_start(), error(), g, GCOV_DATA_SUFFIX, GCOV_NOTE_MAGIC, GCOV_NOTE_SUFFIX, gcov_open(), gcov_write_string(), gcov_write_unsigned(), gcc::context::get_dumps(), gcc::pass_manager::get_pass_profile(), gcc::context::get_passes(), local_tick, mangle_path(), lang_hooks::name, NULL, read_autofdo_file(), read_counts_file(), startswith(), opt_pass::static_pass_number, and warning().

Referenced by do_compile().

coverage_obj_finish()

static void coverage_obj_finish ( vec< constructor_elt, va_gc > * ctor, unsigned object_checksum )

static

Finalize the coverage data.  Generates the array of pointers to
function objects from CTOR.  Generate the gcov_info initializer.   

References build_array_type(), build_constructor(), build_decl(), build_index_type(), build_info(), build_qualified_type(), BUILTINS_LOCATION, DECL_INITIAL, DECL_NAME, varpool_node::finalize_decl(), gcov_fn_info_ptr_type, gcov_info_var, get_identifier(), NULL_TREE, size_int, TREE_STATIC, TREE_TYPE, TYPE_QUAL_CONST, and vec_safe_length().

Referenced by coverage_finish().

coverage_obj_fn()

static vec< constructor_elt, va_gc > * coverage_obj_fn ( vec< constructor_elt, va_gc > * ctor, tree fn, struct coverage_data const * data )

static

Generate the coverage function info for FN and DATA.  Append a
pointer to that object to CTOR and return the appended CTOR.   

References build1(), build_fn_info(), build_var(), CONSTRUCTOR_APPEND_ELT, DECL_INITIAL, varpool_node::finalize_decl(), gcov_fn_info_ptr_type, gcov_fn_info_type, gcov_info_var, and NULL.

Referenced by coverage_finish().

coverage_obj_init()

static bool coverage_obj_init ( void )

static

Create the gcov_info types and object.  Generate the constructor
function to call __gcov_init.  Does not generate the initializer
for the object.  Returns TRUE if coverage data is being emitted.   

References build_decl(), build_fn_info_type(), build_gcov_exit_decl(), build_gcov_info_var_registration(), build_info_type(), build_init_ctor(), build_pointer_type(), build_qualified_type(), BUILTINS_LOCATION, da_file_name, DECL_NAME, DECL_STRUCT_FUNCTION, symbol_table::dump_file, coverage_data::fn_decl, functions_head, GCOV_COUNTERS, gcov_fn_info_ptr_type, gcov_fn_info_type, gcov_info_var, get_identifier(), lang_hooks_for_types::make_type, coverage_data::next, no_coverage, NULL, NULL_TREE, prg_ctr_mask, symtab, TREE_STATIC, TYPE_QUAL_CONST, and lang_hooks::types.

Referenced by coverage_finish().

coverage_remove_note_file()

void coverage_remove_note_file

(

void

)

Remove coverage file if opened.   

References bbg_file_name, and gcov_close().

Referenced by finalize().

get_coverage_counts()

gcov_type * get_coverage_counts	(	unsigned	counter,
		unsigned	cfg_checksum,
		unsigned	lineno_checksum,
		unsigned int	n_counts )

Returns the counters for a particular tag.   

References counts_entry::cfg_checksum, counts_entry::counts, counts_hash, coverage_node_map_initialized_p(), counts_entry::ctr, ctr_names, current_function_decl, current_function_funcdef_no, da_file_name, DECL_SOURCE_LOCATION, dump_enabled_p(), dump_printf(), dump_printf_loc(), dump_user_location_t::from_function_decl(), dump_user_location_t::from_location_t(), G_, gcc_assert, cgraph_node::get(), counts_entry::ident, input_location, counts_entry::lineno_checksum, MSG_MISSED_OPTIMIZATION, counts_entry::n_counts, NULL, cgraph_node::profile_id, seen_error(), warning(), and warning_at().

Referenced by compute_value_histograms(), get_exec_counts(), and read_thunk_profile().

get_gcov_type()

tree get_gcov_type

(

void

)

Return the type node for gcov_type.   

References LONG_LONG_TYPE_SIZE, opt_mode< T >::require(), smallest_int_mode_for_size(), lang_hooks_for_types::type_for_mode, and lang_hooks::types.

Referenced by build_fn_info_type(), build_info_type(), coverage_counter_alloc(), coverage_end_function(), gimple_divmod_fixed_value_transform(), gimple_gen_ic_profiler(), gimple_gen_time_profiler(), gimple_init_gcov_profiler(), gimple_stringops_transform(), init_ic_make_global_vars(), tree_coverage_counter_addr(), tree_coverage_counter_ref(), and tree_profiling().

get_gcov_unsigned_t()

static tree get_gcov_unsigned_t ( void )

static

Return the type node for gcov_unsigned_t.   

References opt_mode< T >::require(), smallest_int_mode_for_size(), lang_hooks_for_types::type_for_mode, and lang_hooks::types.

Referenced by build_fn_info(), build_fn_info_type(), and build_info_type().

read_counts_file()

static void read_counts_file ( void )

static

Read in the counts file, if available.   

References bbg_file_stamp, counts_entry::cfg_checksum, counts_entry::counts, counts_hash, crc32_unsigned(), counts_entry::ctr, da_file_name, error(), G_, gcov_close(), GCOV_COUNTER_FOR_TAG, GCOV_DATA_MAGIC, gcov_is_error(), gcov_magic(), gcov_open(), gcov_position(), gcov_read_counter(), gcov_read_unsigned(), gcov_sync(), GCOV_TAG_COUNTER_NUM, GCOV_TAG_FUNCTION, GCOV_TAG_IS_COUNTER, GCOV_TAG_OBJECT_SUMMARY, GCOV_UNSIGNED2STRING, counts_entry::ident, counts_entry::lineno_checksum, counts_entry::n_counts, NULL, offset, profile_info, gcov_summary::runs, gcov_summary::sum_max, and warning().

Referenced by coverage_init().

tree_coverage_counter_addr()

tree tree_coverage_counter_addr	(	unsigned	counter,
		unsigned	no )

Generate a tree to access the address of COUNTER NO.   

References build4(), build_fold_addr_expr, build_int_cst(), fn_b_ctrs, fn_n_ctrs, fn_v_ctrs, gcc_assert, gcov_type_node, get_gcov_type(), integer_type_node, and NULL.

Referenced by gimple_gen_average_profiler(), gimple_gen_ic_profiler(), gimple_gen_ior_profiler(), gimple_gen_pow2_profiler(), and gimple_gen_topn_values_profiler().

tree_coverage_counter_ref()

tree tree_coverage_counter_ref	(	unsigned	counter,
		unsigned	no )

Generate a tree to access COUNTER NO.   

References build4(), build_int_cst(), fn_b_ctrs, fn_n_ctrs, fn_v_ctrs, gcc_assert, gcov_type_node, get_gcov_type(), integer_type_node, and NULL.

Referenced by gimple_gen_edge_profiler(), gimple_gen_interval_profiler(), gimple_gen_time_profiler(), and instrument_decisions().

Variable Documentation

bbg_file_name

char* bbg_file_name

static

Name of the notes (gcno) output file.  The "bbg" prefix is for
historical reasons, when the notes file contained only the
basic block graph notes.
If this is NULL we're not writing to the notes file.   

Referenced by coverage_begin_function(), coverage_end_function(), coverage_finish(), coverage_init(), and coverage_remove_note_file().

bbg_file_stamp

unsigned bbg_file_stamp

static

File stamp for notes file.   

Referenced by build_info(), coverage_init(), and read_counts_file().

counts_hash

hash_table<counts_entry>* counts_hash

static

Hash table of count data.   

Referenced by get_coverage_counts(), and read_counts_file().

ctr_merge_functions

const char* const ctr_merge_functions[GCOV_COUNTERS]

static

Referenced by build_info().

ctr_names

const char* const ctr_names[GCOV_COUNTERS]

static

Referenced by get_coverage_counts().

da_file_name

char* da_file_name

static

Name of the count data (gcda) file.   

Referenced by build_info(), coverage_finish(), coverage_init(), coverage_obj_init(), get_coverage_counts(), and read_counts_file().

fn_b_ctrs

unsigned fn_b_ctrs[GCOV_COUNTERS]

static

Referenced by coverage_counter_alloc(), coverage_end_function(), tree_coverage_counter_addr(), and tree_coverage_counter_ref().

fn_ctr_mask

unsigned fn_ctr_mask

static

Counter information for current function.   

Referenced by coverage_counter_alloc(), and coverage_end_function().

fn_n_ctrs

unsigned fn_n_ctrs[GCOV_COUNTERS]

static

Referenced by coverage_counter_alloc(), coverage_end_function(), tree_coverage_counter_addr(), and tree_coverage_counter_ref().

fn_v_ctrs

tree fn_v_ctrs[GCOV_COUNTERS]

static

Referenced by coverage_counter_alloc(), coverage_end_function(), tree_coverage_counter_addr(), and tree_coverage_counter_ref().

functions_head

struct coverage_data* functions_head = 0

static

Referenced by coverage_finish(), and coverage_obj_init().

functions_tail

struct coverage_data** functions_tail = &functions_head

static

Referenced by coverage_end_function().

gcov_fn_info_ptr_type

tree gcov_fn_info_ptr_type

static

Referenced by coverage_obj_finish(), coverage_obj_fn(), and coverage_obj_init().

gcov_fn_info_type

tree gcov_fn_info_type

static

Referenced by coverage_obj_fn(), and coverage_obj_init().

gcov_info_var

tree gcov_info_var

static

Coverage info VAR_DECL and function info type nodes.   

Referenced by build_gcov_info_var_registration(), build_init_ctor(), coverage_obj_finish(), coverage_obj_fn(), and coverage_obj_init().

no_coverage

unsigned no_coverage = 0

static

Referenced by coverage_begin_function(), coverage_counter_alloc(), and coverage_obj_init().

prg_ctr_mask

unsigned prg_ctr_mask

static

Cumulative counter information for whole program.   

Referenced by build_fn_info(), build_info(), coverage_end_function(), and coverage_obj_init().