871e5ada6d
gcc/ChangeLog: * coverage.c (get_coverage_counts): Skip sanity check for TOP N counters as they have variable number of counters. * gcov-dump.c (main): Add new option -r. (print_usage): Likewise. (tag_counters): All new raw format. * gcov-io.h (struct gcov_kvp): New. (GCOV_TOPN_VALUES): Remove. (GCOV_TOPN_VALUES_COUNTERS): Likewise. (GCOV_TOPN_MEM_COUNTERS): New. (GCOV_TOPN_DISK_COUNTERS): Likewise. (GCOV_TOPN_MAXIMUM_TRACKED_VALUES): Likewise. * ipa-profile.c (ipa_profile_generate_summary): Use GCOV_TOPN_MAXIMUM_TRACKED_VALUES. (ipa_profile_write_edge_summary): Likewise. (ipa_profile_read_edge_summary): Likewise. (ipa_profile): Remove usage of GCOV_TOPN_VALUES. * profile.c (sort_hist_values): Sort variable number of counters. (compute_value_histograms): Special case for TOP N counters that have dynamic number of key-value pairs. * value-prof.c (dump_histogram_value): Dump variable number of key-value pairs. (stream_in_histogram_value): Stream in variable number of key-value pairs for TOP N counter. (get_nth_most_common_value): Deal with variable number of key-value pairs. (dump_ic_profile): Use GCOV_TOPN_MAXIMUM_TRACKED_VALUES for loop iteration. (gimple_find_values_to_profile): Set GCOV_TOPN_MEM_COUNTERS to n_counters. * doc/gcov-dump.texi: Document new -r option. libgcc/ChangeLog: * libgcov-driver.c (prune_topn_counter): Remove. (prune_counters): Likewise. (merge_one_data): Special case TOP N counters as they have variable length. (write_top_counters): New. (write_one_data): Special case TOP N. (dump_one_gcov): Do not prune TOP N counters. * libgcov-merge.c (merge_topn_values_set): Remove. (__gcov_merge_topn): Use gcov_topn_add_value. * libgcov-profiler.c (__gcov_topn_values_profiler_body): Likewise here. * libgcov.h (gcov_counter_add): New. (gcov_counter_set_if_null): Likewise. (gcov_topn_add_value): New.
126 lines
4.0 KiB
C
126 lines
4.0 KiB
C
/* Routines required for instrumenting a program. */
|
|
/* Compile this one with gcc. */
|
|
/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
|
|
|
|
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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "libgcov.h"
|
|
|
|
#if defined(inhibit_libc)
|
|
/* If libc and its header files are not available, provide dummy functions. */
|
|
|
|
#ifdef L_gcov_merge_add
|
|
void __gcov_merge_add (gcov_type *counters __attribute__ ((unused)),
|
|
unsigned n_counters __attribute__ ((unused))) {}
|
|
#endif
|
|
|
|
#ifdef L_gcov_merge_topn
|
|
void __gcov_merge_topn (gcov_type *counters __attribute__ ((unused)),
|
|
unsigned n_counters __attribute__ ((unused))) {}
|
|
#endif
|
|
|
|
#else
|
|
|
|
#ifdef L_gcov_merge_add
|
|
/* The profile merging function that just adds the counters. It is given
|
|
an array COUNTERS of N_COUNTERS old counters and it reads the same number
|
|
of counters from the gcov file. */
|
|
void
|
|
__gcov_merge_add (gcov_type *counters, unsigned n_counters)
|
|
{
|
|
for (; n_counters; counters++, n_counters--)
|
|
*counters += gcov_get_counter ();
|
|
}
|
|
#endif /* L_gcov_merge_add */
|
|
|
|
#ifdef L_gcov_merge_ior
|
|
/* The profile merging function that just adds the counters. It is given
|
|
an array COUNTERS of N_COUNTERS old counters and it reads the same number
|
|
of counters from the gcov file. */
|
|
void
|
|
__gcov_merge_ior (gcov_type *counters, unsigned n_counters)
|
|
{
|
|
for (; n_counters; counters++, n_counters--)
|
|
*counters |= gcov_get_counter_target ();
|
|
}
|
|
#endif
|
|
|
|
#ifdef L_gcov_merge_time_profile
|
|
/* Time profiles are merged so that minimum from all valid (greater than zero)
|
|
is stored. There could be a fork that creates new counters. To have
|
|
the profile stable, we chosen to pick the smallest function visit time. */
|
|
void
|
|
__gcov_merge_time_profile (gcov_type *counters, unsigned n_counters)
|
|
{
|
|
unsigned int i;
|
|
gcov_type value;
|
|
|
|
for (i = 0; i < n_counters; i++)
|
|
{
|
|
value = gcov_get_counter_target ();
|
|
|
|
if (value && (!counters[i] || value < counters[i]))
|
|
counters[i] = value;
|
|
}
|
|
}
|
|
#endif /* L_gcov_merge_time_profile */
|
|
|
|
#ifdef L_gcov_merge_topn
|
|
|
|
/* The profile merging function for choosing the most common value.
|
|
It is given an array COUNTERS of N_COUNTERS old counters and it
|
|
reads the same number of counters from the gcov file. The counters
|
|
are split into pairs where the members of the tuple have
|
|
meanings:
|
|
|
|
-- the stored candidate on the most common value of the measured entity
|
|
-- counter
|
|
*/
|
|
|
|
void
|
|
__gcov_merge_topn (gcov_type *counters, unsigned n_counters)
|
|
{
|
|
gcc_assert (!(n_counters % GCOV_TOPN_MEM_COUNTERS));
|
|
|
|
for (unsigned i = 0; i < (n_counters / GCOV_TOPN_MEM_COUNTERS); i++)
|
|
{
|
|
/* First value is number of total executions of the profiler. */
|
|
gcov_type all = gcov_get_counter_ignore_scaling (-1);
|
|
gcov_type n = gcov_get_counter_ignore_scaling (-1);
|
|
|
|
counters[GCOV_TOPN_MEM_COUNTERS * i] += all;
|
|
|
|
for (unsigned j = 0; j < n; j++)
|
|
{
|
|
gcov_type value = gcov_get_counter_target ();
|
|
gcov_type count = gcov_get_counter_ignore_scaling (-1);
|
|
|
|
// TODO: we should use atomic here
|
|
gcov_topn_add_value (counters + GCOV_TOPN_MEM_COUNTERS * i, value,
|
|
count, 0, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif /* L_gcov_merge_topn */
|
|
|
|
#endif /* inhibit_libc */
|