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Add function filtering to gcov

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Add the --include and --exclude flags to gcov to control what functions
to report on. This is meant to make gcov more practical as an when
writing test suites or performing other coverage experiments, which
tends to focus on a few functions at the time. This really shines in
combination with the -t/--stdout flag. With support for more expansive
metrics in gcov like modified condition/decision coverage (MC/DC) and
path coverage, output quickly gets overwhelming without filtering.

The approach is quite simple: filters are egrep regexes and are
evaluated left-to-right, and the last filter "wins", that is, if a
function matches an --include and a subsequent --exclude, it should not
be included in the output. All of the output machinery works on the
function table, so by optionally (not) adding function makes the even
the json output work as expected, and only minor changes are needed to
suppress the filtered-out functions.

Demo: math.c

    int mul (int a, int b) {
        return a * b;
    }

    int sub (int a, int b) {
        return a - b;
    }

    int sum (int a, int b) {
        return a + b;
    }

Plain matches:

$ gcov -t math --include=sum
        -:    0:Source:math.c
        -:    0:Graph:math.gcno
        -:    0:Data:-
        -:    0:Runs:0
    #####:    9:int sum (int a, int b) {
    #####:   10:    return a + b;
        -:   11:}

$ gcov -t math --include=mul
        -:    0:Source:math.c
        -:    0:Graph:math.gcno
        -:    0:Data:-
        -:    0:Runs:0
    #####:    1:int mul (int a, int b) {
    #####:    2:    return a * b;
        -:    3:}

Regex match:

$ gcov -t math --include=su
        -:    0:Source:math.c
        -:    0:Graph:math.gcno
        -:    0:Data:-
        -:    0:Runs:0
    #####:    5:int sub (int a, int b) {
    #####:    6:    return a - b;
        -:    7:}
    #####:    9:int sum (int a, int b) {
    #####:   10:    return a + b;
        -:   11:}

And similar for exclude:

$ gcov -t math --exclude=sum
        -:    0:Source:math.c
        -:    0:Graph:math.gcno
        -:    0:Data:-
        -:    0:Runs:0
    #####:    1:int mul (int a, int b) {
    #####:    2:    return a * b;
        -:    3:}
    #####:    5:int sub (int a, int b) {
    #####:    6:    return a - b;
        -:    7:}

And json, for good measure:

$ gcov -t math --include=sum --json | jq ".files[].lines[]"
{
  "line_number": 9,
  "function_name": "sum",
  "count": 0,
  "unexecuted_block": true,
  "block_ids": [],
  "branches": [],
  "calls": []
}
{
  "line_number": 10,
  "function_name": "sum",
  "count": 0,
  "unexecuted_block": true,
  "block_ids": [
    2
  ],
  "branches": [],
  "calls": []
}

Matching generally work well for mangled names, as the mangled names
also have the base symbol name in it. By default, functions are matched
by the mangled name, which means matching on base names always work as
expected. The -M flag makes the matching work on the demangled name
which is quite useful when you only want to report on specific
overloads and can use the full type names.

Why not just use grep? grep is not really sufficient as grep is very
line oriented, and the reports that benefit the most from filtering
often unpredictably span multiple lines based on the state of coverage.
For example, a condition coverage report for 3 terms/6 outcomes only
outputs 1 line when all conditions are covered, and 7 with no lines
covered.

gcc/ChangeLog:

	* doc/gcov.texi: Add --include, --exclude, --match-on-demangled
	documentation.
	* gcov.cc (struct fnfilter): New.
	(print_usage): Add --include, --exclude, -M,
	--match-on-demangled.
	(process_args): Likewise.
	(release_structures): Release filters.
	(read_graph_file): Only add function_infos matching filters.
	(output_lines): Likewise.

gcc/testsuite/ChangeLog:

	* lib/gcov.exp: Add filtering test function.
	* g++.dg/gcov/gcov-19.C: New test.
	* g++.dg/gcov/gcov-20.C: New test.
	* g++.dg/gcov/gcov-21.C: New test.
	* gcc.misc-tests/gcov-25.c: New test.
	* gcc.misc-tests/gcov-26.c: New test.
	* gcc.misc-tests/gcov-27.c: New test.
	* gcc.misc-tests/gcov-28.c: New test.
This commit is contained in:
Jørgen Kvalsvik 2024-03-29 13:01:37 +01:00
parent 2b3fbac8e3
commit 1e43ea7bb3
10 changed files with 484 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

113
gcc/doc/gcov.texi
View file

@ -127,11 +127,14 @@ gcov [@option{-v}|@option{--version}] [@option{-h}|@option{--help}]
[@option{-g}|@option{--conditions}]
[@option{-d}|@option{--display-progress}]
[@option{-f}|@option{--function-summaries}]
[@option{--include} @var{regex}]
[@option{--exclude} @var{regex}]
[@option{-j}|@option{--json-format}]
[@option{-H}|@option{--human-readable}]
[@option{-k}|@option{--use-colors}]
[@option{-l}|@option{--long-file-names}]
[@option{-m}|@option{--demangled-names}]
[@option{-M}|@option{--filter-on-demangled}]
[@option{-n}|@option{--no-output}]
[@option{-o}|@option{--object-directory} @var{directory|file}]
[@option{-p}|@option{--preserve-paths}]
@ -186,6 +189,24 @@ Display the progress on the standard output.
@itemx --function-summaries
Output summaries for each function in addition to the file level summary.
@item --include @var{regex}
Include functions matching @var{regex}. This option makes
@command{gcov} only report on functions that match the extended
regular expression @var{regex}. This flag can be combined with
@option{--exclude}. If a function matches both includes and excludes,
the last include/exclude applies. By default @command{gcov} reports
on all functions, but if a @command{--include} is used then only
functions matching the include will be reported.
@item --exclude @var{regex}
Exclude functions matching @var{regex}. This option makes
@command{gcov} not report on functions that match the extended regular
expression @var{regex}. This flag can be combined with
@option{--include}. If a function matches both includes and excludes,
the last include/exclude applies. By default @command{gcov} reports
on all functions, and if @option{--exclude} is used then functions
matching it will be omitted.
@item -h
@itemx --help
Display help about using @command{gcov} (on the standard output), and
@ -449,6 +470,12 @@ and included file names will be complete path names.
Display demangled function names in output. The default is to show
mangled function names.
@item -M
@itemx --filter-on-demangled
Make @option{--include} and @option{--exclude} match demangled names.
This does only affects the matching and does not imply
@option{--demangled-names}, but it can safely be combined with it.
@item -n
@itemx --no-output
Do not create the @command{gcov} output file.
@ -978,6 +1005,92 @@ the file doesn't match the executable (differing number of basic block
counts) it will ignore the contents of the file. It then adds in the
new execution counts and finally writes the data to the file.
You can report on a subset of functions by using @option{--include}
and @option{--exclude}. This is very useful when combined with
@option{--stdout} trying to understand behavior and coverage for a
particular function by running a test, looking at @command{gcov}
output, testing another input, and running @command{gcov} again.
@smallexample
$ gcov -m --stdout --include inc tmp
-: 0:Source:tmp.cpp
-: 0:Graph:tmp.gcno
-: 0:Data:tmp.gcda
-: 0:Runs:1
2*: 8: void inc () @{ b++; @}
------------------
Foo<char>::inc():
#####: 8: void inc () @{ b++; @}
------------------
Foo<int>::inc():
2: 8: void inc () @{ b++; @}
------------------
@end smallexample
@command{gcov} will match on mangled names by default, which you can
control with the @option{-M} flag. Note that matching and reporting
are independent, so you can match on mangled names while printing
demangled names, and vice versa. To report on the @code{int}
instantiation of @code{Foo} matching on mangled and demangled names:
@smallexample
$ gcov -t -m -M tmp --include 'Foo<int>'
-: 0:Source:tmp.cpp
-: 0:Graph:tmp.gcno
-: 0:Data:tmp.gcda
-: 0:Runs:1
1: 7: Foo(): b (1000) @{@}
2: 8: void inc () @{ b++; @}
@end smallexample
@smallexample
$ gcov -t -m tmp --include 'FooIi'
-: 0:Source:tmp.cpp
-: 0:Graph:tmp.gcno
-: 0:Data:tmp.gcda
-: 0:Runs:1
1: 7: Foo(): b (1000) @{@}
2: 8: void inc () @{ b++; @}
@end smallexample
The arguments to @option{--include} and @option{--exclude} are
extended regular expressions (like @command{grep -E}), so the pattern
@code{in.?} matches both @code{inc} and @code{main}. If used with
@option{-M} then all @code{int} instantiations of @code{Foo} would
match too. @option{--include} and @option{--exclude} can be used
multiple times, and if a name matches multiple filters it is the last
one to match which takes preference. For example, to match
@code{main} and the @code{int} instatiation of @code{inc}, while
omitting the @code{Foo} constructor:
@smallexample
$ gcov -t -m -M --include in --exclude Foo --include '<int>::inc' tmp
-: 0:Source:tmp.cpp
-: 0:Graph:tmp.gcno
-: 0:Data:tmp.gcda
-: 0:Runs:1
2: 8: void inc () @{ b++; @}
1: 18:main (void)
-: 19:@{
-: 20: int i, total;
1: 21: Foo<int> counter;
-: 22:
1: 23: counter.inc();
1: 24: counter.inc();
1: 25: total = 0;
-: 26:
11: 27: for (i = 0; i < 10; i++)
10: 28: total += i;
-: 29:
1*: 30: int v = total > 100 ? 1 : 2;
-: 31:
1: 32: if (total != 45)
#####: 33: printf ("Failure\n");
-: 34: else
1: 35: printf ("Success\n");
1: 36: return 0;
@end smallexample
@node Gcov and Optimization
@section Using @command{gcov} with GCC Optimization

127
gcc/gcov.cc
View file

@ -47,6 +47,7 @@ along with Gcov; see the file COPYING3. If not see
#include "pretty-print.h"
#include "json.h"
#include "hwint.h"
#include "xregex.h"
#include <zlib.h>
#include <getopt.h>
@ -689,6 +690,48 @@ static int flag_counts = 0;
/* Return code of the tool invocation. */
static int return_code = 0;
/* "Keep policy" when adding functions to the global function table. This will
be set to false when --include is used, otherwise every function should be
added to the table. Used for --include/exclude. */
static bool default_keep = true;
/* Include/exclude filters function based on matching the (de)mangled name.
The default is to match the mangled name. Note that flag_demangled_names
does not affect this. */
static bool flag_filter_on_demangled = false;
/* A 'function filter', a filter and action for determining if a function
should be included in the output or not. Used for --include/--exclude
filtering. */
struct fnfilter
{
/* The (extended) compiled regex for this filter. */
regex_t regex;
/* The action when this filter (regex) matches - if true, the function should
be kept, otherwise discarded. */
bool keep;
/* Compile the regex EXPR, or exit if pattern is malformed. */
void compile (const char *expr)
{
int err = regcomp (&regex, expr, REG_NOSUB | REG_EXTENDED);
if (err)
{
size_t len = regerror (err, &regex, nullptr, 0);
char *msg = XNEWVEC (char, len);
regerror (err, &regex, msg, len);
fprintf (stderr, "Bad regular expression: %s\n", msg);
free (msg);
exit (EXIT_FAILURE);
}
}
};
/* A collection of filter functions for including/exclude functions in the
output. This is empty unless --include/--exclude is used. */
static vector<fnfilter> filters;
/* Forward declarations. */
static int process_args (int, char **);
static void print_usage (int) ATTRIBUTE_NORETURN;
@ -983,6 +1026,8 @@ print_usage (int error_p)
fnotice (file, " -d, --display-progress Display progress information\n");
fnotice (file, " -D, --debug Display debugging dumps\n");
fnotice (file, " -f, --function-summaries Output summaries for each function\n");
fnotice (file, " --include Include functions matching this regex\n");
fnotice (file, " --exclude Exclude functions matching this regex\n");
fnotice (file, " -h, --help Print this help, then exit\n");
fnotice (file, " -j, --json-format Output JSON intermediate format\n\
into .gcov.json.gz file\n");
@ -991,6 +1036,8 @@ print_usage (int error_p)
fnotice (file, " -l, --long-file-names Use long output file names for included\n\
source files\n");
fnotice (file, " -m, --demangled-names Output demangled function names\n");
fnotice (file, " -M, --filter-on-demangled Make --include/--exclude match on demangled\n\
names. This does not imply -m\n");
fnotice (file, " -n, --no-output Do not create an output file\n");
fnotice (file, " -o, --object-directory DIR|FILE Search for object files in DIR or called FILE\n");
fnotice (file, " -p, --preserve-paths Preserve all pathname components\n");
@ -1035,11 +1082,14 @@ static const struct option options[] =
{ "branch-counts", no_argument, NULL, 'c' },
{ "conditions", no_argument, NULL, 'g' },
{ "json-format", no_argument, NULL, 'j' },
{ "include", required_argument, NULL, 'I' },
{ "exclude", required_argument, NULL, 'E' },
{ "human-readable", no_argument, NULL, 'H' },
{ "no-output", no_argument, NULL, 'n' },
{ "long-file-names", no_argument, NULL, 'l' },
{ "function-summaries", no_argument, NULL, 'f' },
{ "demangled-names", no_argument, NULL, 'm' },
{ "filter-on-demangled", no_argument, NULL, 'M' },
{ "preserve-paths", no_argument, NULL, 'p' },
{ "relative-only", no_argument, NULL, 'r' },
{ "object-directory", required_argument, NULL, 'o' },
@ -1062,7 +1112,7 @@ process_args (int argc, char **argv)
{
int opt;
const char *opts = "abcdDfghHijklmno:pqrs:tuvwx";
const char *opts = "abcdDfghHijklmMno:pqrs:tuvwx";
while ((opt = getopt_long (argc, argv, opts, options, NULL)) != -1)
{
switch (opt)
@ -1088,6 +1138,17 @@ process_args (int argc, char **argv)
case 'l':
flag_long_names = 1;
break;
case 'I':
default_keep = false;
filters.push_back (fnfilter {});
filters.back ().keep = true;
filters.back ().compile (optarg);
break;
case 'E':
filters.push_back (fnfilter {});
filters.back ().keep = false;
filters.back ().compile (optarg);
break;
case 'H':
flag_human_readable_numbers = 1;
break;
@ -1100,6 +1161,9 @@ process_args (int argc, char **argv)
case 'm':
flag_demangled_names = 1;
break;
case 'M':
flag_filter_on_demangled = true;
break;
case 'n':
flag_gcov_file = 0;
break;
@ -1740,9 +1804,13 @@ release_structures (void)
it != functions.end (); it++)
delete (*it);
for (fnfilter &filter : filters)
regfree (&filter.regex);
sources.resize (0);
names.resize (0);
functions.resize (0);
filters.resize (0);
ident_to_fn.clear ();
}
@ -1967,8 +2035,6 @@ read_graph_file (void)
unsigned end_column = gcov_read_unsigned ();
fn = new function_info ();
functions.push_back (fn);
ident_to_fn[ident] = fn;
fn->m_name = function_name;
fn->ident = ident;
@ -1982,6 +2048,26 @@ read_graph_file (void)
fn->artificial = artificial;
current_tag = tag;
/* This is separate from flag_demangled_names to support filtering on
mangled names while printing demangled names, or filtering on
demangled names while printing mangled names. An independent flag
makes sure the function selection does not change even if
demangling is turned on/off. */
const char *fname = function_name;
if (flag_filter_on_demangled)
fname = fn->get_demangled_name ();
bool keep = default_keep;
for (const fnfilter &fn : filters)
if (regexec (&fn.regex, fname, 0, nullptr, 0) == 0)
keep = fn.keep;
if (keep)
{
functions.push_back (fn);
ident_to_fn[ident] = fn;
}
}
else if (fn && tag == GCOV_TAG_BLOCKS)
{
@ -3391,11 +3477,17 @@ output_lines (FILE *gcov_file, const source_info *src)
unsigned line_start_group = 0;
vector<function_info *> *fns;
unsigned filtered_line_end = !filters.empty () ? 0 : source_lines.size ();
for (unsigned line_num = 1; line_num <= source_lines.size (); line_num++)
{
if (line_num >= src->lines.size ())
{
/* If the src->lines is truncated because the rest of the functions
are filtered out we must stop here, and not fall back to printing
the rest of the file. */
if (!filters.empty ())
break;
fprintf (gcov_file, "%9s:%5u", "-", line_num);
print_source_line (gcov_file, source_lines, line_num);
continue;
@ -3414,11 +3506,26 @@ output_lines (FILE *gcov_file, const source_info *src)
for (unsigned i = 0; i < fns->size (); i++)
if ((*fns)[i]->end_line > line_start_group)
line_start_group = (*fns)[i]->end_line;
/* When filtering, src->lines will be cut short for the last
selected function. To make sure the "overlapping function"
section is printed too, adjust the end so that it is within
src->lines. */
if (line_start_group >= src->lines.size ())
line_start_group = src->lines.size () - 1;
if (!filters.empty ())
filtered_line_end = line_start_group;
}
else if (fns != NULL && fns->size () == 1)
{
function_info *fn = (*fns)[0];
output_function_details (gcov_file, fn);
/* If functions are filtered, only the matching functions will be in
fns and there is no need for extra checking. */
if (!filters.empty ())
filtered_line_end = fn->end_line;
}
}
@ -3428,12 +3535,16 @@ output_lines (FILE *gcov_file, const source_info *src)
Otherwise, print the execution count before the source line.
There are 16 spaces of indentation added before the source
line so that tabs won't be messed up. */
output_line_beginning (gcov_file, line->exists, line->unexceptional,
line->has_unexecuted_block, line->count,
line_num, "=====", "#####", src->maximum_count);
if (line_num <= filtered_line_end)
{
output_line_beginning (gcov_file, line->exists, line->unexceptional,
line->has_unexecuted_block, line->count,
line_num, "=====", "#####",
src->maximum_count);
print_source_line (gcov_file, source_lines, line_num);
output_line_details (gcov_file, line, line_num);
print_source_line (gcov_file, source_lines, line_num);
output_line_details (gcov_file, line, line_num);
}
if (line_start_group == line_num)
{

35
gcc/testsuite/g++.dg/gcov/gcov-19.C Normal file
View file

@ -0,0 +1,35 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
/* Filtering on the function base name generally works well, because it becomes
an unadultered part of the symbol. */
template <typename T>
T
fn1 (T x)
{
/* fst */
return x;
}
template <typename T>
T
fn2 (T x)
{
/* snd */
return 2 * x;
}
int
main ()
{
fn1 (2);
fn1 (2.0);
fn1 (2.0f);
fn2 (2);
fn2 (2.0);
fn2 (2.0f);
}
/* { dg-final { run-gcov { filters { fn1 } { fn2 } } { --include=fn1 gcov-19.C } } } */

38
gcc/testsuite/g++.dg/gcov/gcov-20.C Normal file
View file

@ -0,0 +1,38 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
/* Filtering also works by targeting the mangled symbol directly, but the
subtlety is not really caught by the test framework. Matching on fn1I[df]
prints the "overlapping blocks" of both the float and double instantiation,
but *not* the int instantiation. The extra {} around the --include argument
is quoting for tcl/dejagnu. */
template <typename T>
T
fn1 (T x)
{
/* fst */
return x;
}
template <typename T>
T
fn2 (T x)
{
/* snd */
return 2 * x;
}
int
main ()
{
fn1 (2);
fn1 (2.0);
fn1 (2.0f);
fn2 (2);
fn2 (2.0);
fn2 (2.0f);
}
/* { dg-final { run-gcov { filters { fst } { snd } } { {--include=fn1I[fd]} gcov-20.C } } } */

32
gcc/testsuite/g++.dg/gcov/gcov-21.C Normal file
View file

@ -0,0 +1,32 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
/* Filters can be applied to demangled names. This support matching on
types and class hierarchies as well as function names. */
template <typename T>
T
fn1 (T x)
{
/* fst */
return x;
}
template <typename T>
T
fn2 (T x)
{
/* snd */
return 2 * x;
}
int
main ()
{
fn1 (2);
fn2 (2.0);
fn2 (2.0f);
}
/* { dg-final { run-gcov { filters { fst } } { --filter-on-demangled --include int gcov-21.C } } } */

25
gcc/testsuite/gcc.misc-tests/gcov-25.c Normal file
View file

@ -0,0 +1,25 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
/* Filters are considered in order with latest-wins, so if a function is
included and later excluded it should not show up. */
int
fn1 (int x)
{
/* fst */
return x;
}
int
fn2 (int x)
{
/* snd */
return x * 2;
}
int
main ()
{}
/* { dg-final { run-gcov { filters { snd } { fst main } } { --include=fn --exclude=1 gcov-25.c } } } */

25
gcc/testsuite/gcc.misc-tests/gcov-26.c Normal file
View file

@ -0,0 +1,25 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
/* Filters are considered in order with latest-wins, so if a function is
excluded and later included it should show up. */
int
fn1 (int x)
{
/* fst */
return x;
}
int
fn2 (int x)
{
/* snd */
return x * 2;
}
int
main ()
{}
/* { dg-final { run-gcov { filters { fst snd } { main } } { --exclude=1 --include=fn gcov-26.c } } } */

24
gcc/testsuite/gcc.misc-tests/gcov-27.c Normal file
View file

@ -0,0 +1,24 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
/* If only --exclude is used, other functions should be used by default. */
int
fn1 (int x)
{
/* fst */
return x;
}
int
fn2 (int x)
{
/* snd */
return x * 2;
}
int
main ()
{}
/* { dg-final { run-gcov { filters { fst snd } { main } } { --exclude=main gcov-27.c } } } */

22
gcc/testsuite/gcc.misc-tests/gcov-28.c Normal file
View file

@ -0,0 +1,22 @@
/* { dg-options "-fprofile-arcs -ftest-coverage" } */
/* { dg-do run { target native } } */
int
once (int x)
{
/* fst */
return x;
}
int
twice (int x)
{
/* snd */
return x * 2;
}
int
main ()
{}
/* { dg-final { run-gcov { filters { fst } { snd main } } { --include=once gcov-28.c } } } */

53
gcc/testsuite/lib/gcov.exp
View file

@ -495,6 +495,44 @@ proc verify-calls { testname testcase file } {
return $failed
}
# Verify that report filtering includes and excludes the right functions.
proc verify-filters { testname testcase file expected unexpected } {
set fd [open $file r]
set seen {}
set ex [concat $expected $unexpected]
while { [gets $fd line] >= 0 } {
foreach sym $ex {
if [regexp "$sym" "$line"] {
lappend seen $sym
}
}
}
set seen [lsort -unique $seen]
set expected [lmap key $expected {
if { $key in $seen } continue
set key
}]
set unexpected [lmap key $unexpected {
if { $key ni $seen } continue
set key
}]
foreach sym $expected {
fail "Did not see expected symbol '$sym'"
}
foreach sym $unexpected {
fail "Found unexpected symbol '$sym'"
}
close $fd
return [expr [llength $expected] + [llength $unexpected]]
}
proc gcov-pytest-format-line { args } {
global subdir
@ -570,6 +608,7 @@ proc run-gcov { args } {
set gcov_verify_conditions 0
set gcov_verify_lines 1
set gcov_verify_intermediate 0
set gcov_verify_filters 0
set gcov_remove_gcda 0
set xfailed 0
@ -580,12 +619,17 @@ proc run-gcov { args } {
set gcov_verify_branches 1
} elseif { $a == "conditions" } {
set gcov_verify_conditions 1
} elseif { [lindex $a 0] == "filters" } {
set gcov_verify_filters 1
set verify_filters_expected [lindex $a 1]
set verify_filters_unexpected [lindex $a 2]
} elseif { $a == "intermediate" } {
set gcov_verify_intermediate 1
set gcov_verify_calls 0
set gcov_verify_branches 0
set gcov_verify_conditions 0
set gcov_verify_lines 0
set gcov_verify_filters 0
} elseif { $a == "remove-gcda" } {
set gcov_remove_gcda 1
} elseif { $gcov_args == "" } {
@ -670,15 +714,20 @@ proc run-gcov { args } {
} else {
set ifailed 0
}
if { $gcov_verify_filters } {
set ffailed [verify-filters $testname $testcase $testcase.gcov $verify_filters_expected $verify_filters_unexpected]
} else {
set ffailed 0
}
# Report whether the gcov test passed or failed. If there were
# multiple failures then the message is a summary.
set tfailed [expr $lfailed + $bfailed + $cdfailed + $cfailed + $ifailed]
set tfailed [expr $lfailed + $bfailed + $cdfailed + $cfailed + $ifailed + $ffailed]
if { $xfailed } {
setup_xfail "*-*-*"
}
if { $tfailed > 0 } {
fail "$testname gcov: $lfailed failures in line counts, $bfailed in branch percentages, $cdfailed in condition/decision, $cfailed in return percentages, $ifailed in intermediate format"
fail "$testname gcov: $lfailed failures in line counts, $bfailed in branch percentages, $cdfailed in condition/decision, $cfailed in return percentages, $ifailed in intermediate format, $ffailed failed in filters"
if { $xfailed } {
clean-gcov $testcase
}