2014-07-11 07:48:07 +02:00
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/* Utility functions for reading gcda files into in-memory
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gcov_info structures and offline profile processing. */
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/* Copyright (C) 2014 Free Software Foundation, Inc.
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Contributed by Rong Xu <xur@google.com>.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#define IN_GCOV_TOOL 1
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#include "libgcov.h"
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#include "intl.h"
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#include "diagnostic.h"
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#include "version.h"
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#include "demangle.h"
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/* Borrowed from basic-block.h. */
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#define RDIV(X,Y) (((X) + (Y) / 2) / (Y))
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extern gcov_position_t gcov_position();
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extern int gcov_is_error();
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/* Verbose mode for debug. */
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static int verbose;
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/* Set verbose flag. */
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void gcov_set_verbose (void)
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{
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verbose = 1;
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}
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/* The following part is to read Gcda and reconstruct GCOV_INFO. */
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#include "obstack.h"
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#include <unistd.h>
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#include <ftw.h>
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static void tag_function (unsigned, unsigned);
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static void tag_blocks (unsigned, unsigned);
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static void tag_arcs (unsigned, unsigned);
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static void tag_lines (unsigned, unsigned);
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static void tag_counters (unsigned, unsigned);
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static void tag_summary (unsigned, unsigned);
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/* The gcov_info for the first module. */
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static struct gcov_info *curr_gcov_info;
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/* The gcov_info being processed. */
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static struct gcov_info *gcov_info_head;
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/* This variable contains all the functions in current module. */
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static struct obstack fn_info;
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/* The function being processed. */
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static struct gcov_fn_info *curr_fn_info;
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/* The number of functions seen so far. */
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static unsigned num_fn_info;
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/* This variable contains all the counters for current module. */
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static int k_ctrs_mask[GCOV_COUNTERS];
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/* The kind of counters that have been seen. */
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static struct gcov_ctr_info k_ctrs[GCOV_COUNTERS];
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/* Number of kind of counters that have been seen. */
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static int k_ctrs_types;
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/* Merge functions for counters. */
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#define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) __gcov_merge ## FN_TYPE,
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static gcov_merge_fn ctr_merge_functions[GCOV_COUNTERS] = {
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#include "gcov-counter.def"
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};
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#undef DEF_GCOV_COUNTER
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/* Set the ctrs field in gcov_fn_info object FN_INFO. */
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static void
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set_fn_ctrs (struct gcov_fn_info *fn_info)
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{
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int j = 0, i;
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for (i = 0; i < GCOV_COUNTERS; i++)
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{
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if (k_ctrs_mask[i] == 0)
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continue;
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fn_info->ctrs[j].num = k_ctrs[i].num;
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fn_info->ctrs[j].values = k_ctrs[i].values;
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j++;
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}
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if (k_ctrs_types == 0)
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k_ctrs_types = j;
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else
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gcc_assert (j == k_ctrs_types);
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}
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/* For each tag in gcda file, we have an entry here.
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TAG is the tag value; NAME is the tag name; and
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PROC is the handler function. */
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typedef struct tag_format
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{
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unsigned tag;
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char const *name;
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void (*proc) (unsigned, unsigned);
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} tag_format_t;
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/* Handler table for various Tags. */
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static const tag_format_t tag_table[] =
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{
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{0, "NOP", NULL},
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{0, "UNKNOWN", NULL},
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{0, "COUNTERS", tag_counters},
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{GCOV_TAG_FUNCTION, "FUNCTION", tag_function},
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{GCOV_TAG_BLOCKS, "BLOCKS", tag_blocks},
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{GCOV_TAG_ARCS, "ARCS", tag_arcs},
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{GCOV_TAG_LINES, "LINES", tag_lines},
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{GCOV_TAG_OBJECT_SUMMARY, "OBJECT_SUMMARY", tag_summary},
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{GCOV_TAG_PROGRAM_SUMMARY, "PROGRAM_SUMMARY", tag_summary},
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{0, NULL, NULL}
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};
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/* Handler for reading function tag. */
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static void
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tag_function (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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int i;
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/* write out previous fn_info. */
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if (num_fn_info)
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{
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set_fn_ctrs (curr_fn_info);
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obstack_ptr_grow (&fn_info, curr_fn_info);
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}
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/* Here we over allocate a bit, using GCOV_COUNTERS instead of the actual active
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counter types. */
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curr_fn_info = (struct gcov_fn_info *) xcalloc (sizeof (struct gcov_fn_info)
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+ GCOV_COUNTERS * sizeof (struct gcov_ctr_info), 1);
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for (i = 0; i < GCOV_COUNTERS; i++)
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k_ctrs[i].num = 0;
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k_ctrs_types = 0;
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curr_fn_info->key = curr_gcov_info;
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curr_fn_info->ident = gcov_read_unsigned ();
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curr_fn_info->lineno_checksum = gcov_read_unsigned ();
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curr_fn_info->cfg_checksum = gcov_read_unsigned ();
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num_fn_info++;
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if (verbose)
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fnotice (stdout, "tag one function id=%d\n", curr_fn_info->ident);
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}
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/* Handler for reading block tag. */
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static void
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tag_blocks (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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/* TBD: gcov-tool currently does not handle gcno files. Assert here. */
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gcc_unreachable ();
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}
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/* Handler for reading flow arc tag. */
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static void
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tag_arcs (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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/* TBD: gcov-tool currently does not handle gcno files. Assert here. */
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gcc_unreachable ();
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}
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/* Handler for reading line tag. */
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static void
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tag_lines (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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/* TBD: gcov-tool currently does not handle gcno files. Assert here. */
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gcc_unreachable ();
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}
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/* Handler for reading counters array tag with value as TAG and length of LENGTH. */
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static void
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tag_counters (unsigned tag, unsigned length)
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{
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unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);
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gcov_type *values;
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unsigned ix;
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unsigned tag_ix;
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tag_ix = GCOV_COUNTER_FOR_TAG (tag);
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gcc_assert (tag_ix < GCOV_COUNTERS);
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k_ctrs_mask [tag_ix] = 1;
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gcc_assert (k_ctrs[tag_ix].num == 0);
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k_ctrs[tag_ix].num = n_counts;
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k_ctrs[tag_ix].values = values = (gcov_type *) xmalloc (n_counts * sizeof (gcov_type));
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gcc_assert (values);
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for (ix = 0; ix != n_counts; ix++)
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values[ix] = gcov_read_counter ();
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}
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/* Handler for reading summary tag. */
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static void
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tag_summary (unsigned tag ATTRIBUTE_UNUSED, unsigned length ATTRIBUTE_UNUSED)
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{
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struct gcov_summary summary;
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gcov_read_summary (&summary);
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}
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/* This function is called at the end of reading a gcda file.
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It flushes the contents in curr_fn_info to gcov_info object OBJ_INFO. */
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static void
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read_gcda_finalize (struct gcov_info *obj_info)
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{
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int i;
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set_fn_ctrs (curr_fn_info);
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obstack_ptr_grow (&fn_info, curr_fn_info);
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/* We set the following fields: merge, n_functions, and functions. */
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obj_info->n_functions = num_fn_info;
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obj_info->functions = (const struct gcov_fn_info**) obstack_finish (&fn_info);
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/* wrap all the counter array. */
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for (i=0; i< GCOV_COUNTERS; i++)
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{
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if (k_ctrs_mask[i])
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obj_info->merge[i] = ctr_merge_functions[i];
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}
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}
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/* Read the content of a gcda file FILENAME, and return a gcov_info data structure.
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Program level summary CURRENT_SUMMARY will also be updated. */
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static struct gcov_info *
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read_gcda_file (const char *filename)
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{
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unsigned tags[4];
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unsigned depth = 0;
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unsigned magic, version;
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struct gcov_info *obj_info;
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int i;
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for (i=0; i< GCOV_COUNTERS; i++)
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k_ctrs_mask[i] = 0;
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k_ctrs_types = 0;
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if (!gcov_open (filename))
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{
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fnotice (stderr, "%s:cannot open\n", filename);
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return NULL;
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}
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/* Read magic. */
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magic = gcov_read_unsigned ();
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if (magic != GCOV_DATA_MAGIC)
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{
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fnotice (stderr, "%s:not a gcov data file\n", filename);
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gcov_close ();
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return NULL;
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}
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/* Read version. */
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version = gcov_read_unsigned ();
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if (version != GCOV_VERSION)
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{
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fnotice (stderr, "%s:incorrect gcov version %d vs %d \n", filename, version, GCOV_VERSION);
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gcov_close ();
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return NULL;
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}
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/* Instantiate a gcov_info object. */
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curr_gcov_info = obj_info = (struct gcov_info *) xcalloc (sizeof (struct gcov_info) +
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sizeof (struct gcov_ctr_info) * GCOV_COUNTERS, 1);
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obj_info->version = version;
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obstack_init (&fn_info);
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num_fn_info = 0;
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curr_fn_info = 0;
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{
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2014-07-27 09:22:47 +02:00
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size_t len = strlen (filename) + 1;
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char *str_dup = (char*) xmalloc (len);
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2014-07-11 07:48:07 +02:00
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2014-07-27 09:22:47 +02:00
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memcpy (str_dup, filename, len);
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2014-07-11 07:48:07 +02:00
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obj_info->filename = str_dup;
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}
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/* Read stamp. */
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obj_info->stamp = gcov_read_unsigned ();
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while (1)
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{
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gcov_position_t base;
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unsigned tag, length;
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tag_format_t const *format;
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unsigned tag_depth;
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int error;
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unsigned mask;
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tag = gcov_read_unsigned ();
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if (!tag)
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break;
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length = gcov_read_unsigned ();
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base = gcov_position ();
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mask = GCOV_TAG_MASK (tag) >> 1;
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for (tag_depth = 4; mask; mask >>= 8)
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{
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if (((mask & 0xff) != 0xff))
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{
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warning (0, "%s:tag `%x' is invalid\n", filename, tag);
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break;
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}
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tag_depth--;
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}
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for (format = tag_table; format->name; format++)
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if (format->tag == tag)
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goto found;
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format = &tag_table[GCOV_TAG_IS_COUNTER (tag) ? 2 : 1];
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found:;
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if (tag)
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{
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if (depth && depth < tag_depth)
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{
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if (!GCOV_TAG_IS_SUBTAG (tags[depth - 1], tag))
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warning (0, "%s:tag `%x' is incorrectly nested\n",
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filename, tag);
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}
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depth = tag_depth;
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tags[depth - 1] = tag;
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}
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if (format->proc)
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{
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unsigned long actual_length;
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(*format->proc) (tag, length);
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actual_length = gcov_position () - base;
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if (actual_length > length)
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warning (0, "%s:record size mismatch %lu bytes overread\n",
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filename, actual_length - length);
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else if (length > actual_length)
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warning (0, "%s:record size mismatch %lu bytes unread\n",
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filename, length - actual_length);
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}
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gcov_sync (base, length);
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if ((error = gcov_is_error ()))
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{
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warning (0, error < 0 ? "%s:counter overflow at %lu\n" :
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"%s:read error at %lu\n", filename,
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(long unsigned) gcov_position ());
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break;
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|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
read_gcda_finalize (obj_info);
|
|
|
|
gcov_close ();
|
|
|
|
|
|
|
|
return obj_info;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This will be called by ftw(). It opens and read a gcda file FILENAME.
|
|
|
|
Return a non-zero value to stop the tree walk. */
|
|
|
|
|
|
|
|
static int
|
|
|
|
ftw_read_file (const char *filename,
|
|
|
|
const struct stat *status ATTRIBUTE_UNUSED,
|
|
|
|
int type)
|
|
|
|
{
|
|
|
|
int filename_len;
|
|
|
|
int suffix_len;
|
|
|
|
struct gcov_info *obj_info;
|
|
|
|
|
|
|
|
/* Only read regular files. */
|
|
|
|
if (type != FTW_F)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
filename_len = strlen (filename);
|
|
|
|
suffix_len = strlen (GCOV_DATA_SUFFIX);
|
|
|
|
|
|
|
|
if (filename_len <= suffix_len)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (strcmp(filename + filename_len - suffix_len, GCOV_DATA_SUFFIX))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (verbose)
|
|
|
|
fnotice (stderr, "reading file: %s\n", filename);
|
|
|
|
|
|
|
|
obj_info = read_gcda_file (filename);
|
|
|
|
if (!obj_info)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
obj_info->next = gcov_info_head;
|
|
|
|
gcov_info_head = obj_info;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Initializer for reading a profile dir. */
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
read_profile_dir_init (void)
|
|
|
|
{
|
|
|
|
gcov_info_head = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Driver for read a profile directory and convert into gcov_info list in memory.
|
|
|
|
Return NULL on error,
|
2014-07-27 09:22:47 +02:00
|
|
|
Return the head of gcov_info list on success. */
|
2014-07-11 07:48:07 +02:00
|
|
|
|
|
|
|
struct gcov_info *
|
|
|
|
gcov_read_profile_dir (const char* dir_name, int recompute_summary ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
char *pwd;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
read_profile_dir_init ();
|
|
|
|
|
|
|
|
if (access (dir_name, R_OK) != 0)
|
|
|
|
{
|
|
|
|
fnotice (stderr, "cannot access directory %s\n", dir_name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
pwd = getcwd (NULL, 0);
|
|
|
|
gcc_assert (pwd);
|
|
|
|
ret = chdir (dir_name);
|
|
|
|
if (ret !=0)
|
|
|
|
{
|
|
|
|
fnotice (stderr, "%s is not a directory\n", dir_name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
ftw (".", ftw_read_file, 50);
|
|
|
|
ret = chdir (pwd);
|
|
|
|
free (pwd);
|
|
|
|
|
|
|
|
|
|
|
|
return gcov_info_head;;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This part of the code is to merge profile counters. These
|
|
|
|
variables are set in merge_wrapper and to be used by
|
|
|
|
global function gcov_read_counter_mem() and gcov_get_merge_weight. */
|
|
|
|
|
|
|
|
/* We save the counter value address to this variable. */
|
|
|
|
static gcov_type *gcov_value_buf;
|
|
|
|
|
|
|
|
/* The number of counter values to be read by current merging. */
|
|
|
|
static gcov_unsigned_t gcov_value_buf_size;
|
|
|
|
|
|
|
|
/* The index of counter values being read. */
|
|
|
|
static gcov_unsigned_t gcov_value_buf_pos;
|
|
|
|
|
|
|
|
/* The weight of current merging. */
|
|
|
|
static unsigned gcov_merge_weight;
|
|
|
|
|
|
|
|
/* Read a counter value from gcov_value_buf array. */
|
|
|
|
|
|
|
|
gcov_type
|
|
|
|
gcov_read_counter_mem (void)
|
|
|
|
{
|
|
|
|
gcov_type ret;
|
|
|
|
gcc_assert (gcov_value_buf_pos < gcov_value_buf_size);
|
|
|
|
ret = *(gcov_value_buf + gcov_value_buf_pos);
|
|
|
|
++gcov_value_buf_pos;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return the recorded merge weight. */
|
|
|
|
|
|
|
|
unsigned
|
|
|
|
gcov_get_merge_weight (void)
|
|
|
|
{
|
|
|
|
return gcov_merge_weight;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* A wrapper function for merge functions. It sets up the
|
|
|
|
value buffer and weights and then calls the merge function. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
merge_wrapper (gcov_merge_fn f, gcov_type *v1, gcov_unsigned_t n,
|
|
|
|
gcov_type *v2, unsigned w)
|
|
|
|
{
|
|
|
|
gcov_value_buf = v2;
|
|
|
|
gcov_value_buf_pos = 0;
|
|
|
|
gcov_value_buf_size = n;
|
|
|
|
gcov_merge_weight = w;
|
|
|
|
(*f) (v1, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Offline tool to manipulate profile data.
|
|
|
|
This tool targets on matched profiles. But it has some tolerance on
|
|
|
|
unmatched profiles.
|
|
|
|
When merging p1 to p2 (p2 is the dst),
|
|
|
|
* m.gcda in p1 but not in p2: append m.gcda to p2 with specified weight;
|
|
|
|
emit warning
|
|
|
|
* m.gcda in p2 but not in p1: keep m.gcda in p2 and multiply by
|
|
|
|
specified weight; emit warning.
|
|
|
|
* m.gcda in both p1 and p2:
|
|
|
|
** p1->m.gcda->f checksum matches p2->m.gcda->f: simple merge.
|
|
|
|
** p1->m.gcda->f checksum does not matches p2->m.gcda->f: keep
|
|
|
|
p2->m.gcda->f and
|
|
|
|
drop p1->m.gcda->f. A warning is emitted. */
|
|
|
|
|
|
|
|
/* Add INFO2's counter to INFO1, multiplying by weight W. */
|
|
|
|
|
|
|
|
static int
|
|
|
|
gcov_merge (struct gcov_info *info1, struct gcov_info *info2, int w)
|
|
|
|
{
|
|
|
|
unsigned f_ix;
|
|
|
|
unsigned n_functions = info1->n_functions;
|
|
|
|
int has_mismatch = 0;
|
|
|
|
|
|
|
|
gcc_assert (info2->n_functions == n_functions);
|
|
|
|
for (f_ix = 0; f_ix < n_functions; f_ix++)
|
|
|
|
{
|
|
|
|
unsigned t_ix;
|
|
|
|
const struct gcov_fn_info *gfi_ptr1 = info1->functions[f_ix];
|
|
|
|
const struct gcov_fn_info *gfi_ptr2 = info2->functions[f_ix];
|
|
|
|
const struct gcov_ctr_info *ci_ptr1, *ci_ptr2;
|
|
|
|
|
|
|
|
if (!gfi_ptr1 || gfi_ptr1->key != info1)
|
|
|
|
continue;
|
|
|
|
if (!gfi_ptr2 || gfi_ptr2->key != info2)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (gfi_ptr1->cfg_checksum != gfi_ptr2->cfg_checksum)
|
|
|
|
{
|
|
|
|
fnotice (stderr, "in %s, cfg_checksum mismatch, skipping\n",
|
|
|
|
info1->filename);
|
|
|
|
has_mismatch = 1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
ci_ptr1 = gfi_ptr1->ctrs;
|
|
|
|
ci_ptr2 = gfi_ptr2->ctrs;
|
|
|
|
for (t_ix = 0; t_ix != GCOV_COUNTERS; t_ix++)
|
|
|
|
{
|
|
|
|
gcov_merge_fn merge1 = info1->merge[t_ix];
|
|
|
|
gcov_merge_fn merge2 = info2->merge[t_ix];
|
|
|
|
|
|
|
|
gcc_assert (merge1 == merge2);
|
|
|
|
if (!merge1)
|
|
|
|
continue;
|
|
|
|
gcc_assert (ci_ptr1->num == ci_ptr2->num);
|
|
|
|
merge_wrapper (merge1, ci_ptr1->values, ci_ptr1->num, ci_ptr2->values, w);
|
|
|
|
ci_ptr1++;
|
|
|
|
ci_ptr2++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return has_mismatch;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Find and return the match gcov_info object for INFO from ARRAY.
|
|
|
|
SIZE is the length of ARRAY.
|
|
|
|
Return NULL if there is no match. */
|
|
|
|
|
|
|
|
static struct gcov_info *
|
|
|
|
find_match_gcov_info (struct gcov_info **array, int size, struct gcov_info *info)
|
|
|
|
{
|
|
|
|
struct gcov_info *gi_ptr;
|
|
|
|
struct gcov_info *ret = NULL;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < size; i++)
|
|
|
|
{
|
|
|
|
gi_ptr = array[i];
|
|
|
|
if (gi_ptr == 0)
|
|
|
|
continue;
|
|
|
|
if (!strcmp (gi_ptr->filename, info->filename))
|
|
|
|
{
|
|
|
|
ret = gi_ptr;
|
|
|
|
array[i] = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ret && ret->n_functions != info->n_functions)
|
|
|
|
{
|
|
|
|
fnotice (stderr, "mismatched profiles in %s (%d functions"
|
|
|
|
" vs %d functions)\n",
|
|
|
|
ret->filename,
|
|
|
|
ret->n_functions,
|
|
|
|
info->n_functions);
|
|
|
|
ret = NULL;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Merge the list of gcov_info objects from SRC_PROFILE to TGT_PROFILE.
|
|
|
|
Return 0 on success: without mismatch.
|
|
|
|
Reutrn 1 on error. */
|
|
|
|
|
|
|
|
int
|
|
|
|
gcov_profile_merge (struct gcov_info *tgt_profile, struct gcov_info *src_profile,
|
|
|
|
int w1, int w2)
|
|
|
|
{
|
|
|
|
struct gcov_info *gi_ptr;
|
|
|
|
struct gcov_info **tgt_infos;
|
|
|
|
struct gcov_info *tgt_tail;
|
|
|
|
struct gcov_info **in_src_not_tgt;
|
|
|
|
unsigned tgt_cnt = 0, src_cnt = 0;
|
|
|
|
unsigned unmatch_info_cnt = 0;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
for (gi_ptr = tgt_profile; gi_ptr; gi_ptr = gi_ptr->next)
|
|
|
|
tgt_cnt++;
|
|
|
|
for (gi_ptr = src_profile; gi_ptr; gi_ptr = gi_ptr->next)
|
|
|
|
src_cnt++;
|
|
|
|
tgt_infos = (struct gcov_info **) xmalloc (sizeof (struct gcov_info *)
|
|
|
|
* tgt_cnt);
|
|
|
|
gcc_assert (tgt_infos);
|
|
|
|
in_src_not_tgt = (struct gcov_info **) xmalloc (sizeof (struct gcov_info *)
|
|
|
|
* src_cnt);
|
|
|
|
gcc_assert (in_src_not_tgt);
|
|
|
|
|
|
|
|
for (gi_ptr = tgt_profile, i = 0; gi_ptr; gi_ptr = gi_ptr->next, i++)
|
|
|
|
tgt_infos[i] = gi_ptr;
|
|
|
|
|
|
|
|
tgt_tail = tgt_infos[tgt_cnt - 1];
|
|
|
|
|
|
|
|
/* First pass on tgt_profile, we multiply w1 to all counters. */
|
|
|
|
if (w1 > 1)
|
|
|
|
{
|
|
|
|
for (i = 0; i < tgt_cnt; i++)
|
|
|
|
gcov_merge (tgt_infos[i], tgt_infos[i], w1-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Second pass, add src_profile to the tgt_profile. */
|
|
|
|
for (gi_ptr = src_profile; gi_ptr; gi_ptr = gi_ptr->next)
|
|
|
|
{
|
|
|
|
struct gcov_info *gi_ptr1;
|
|
|
|
|
|
|
|
gi_ptr1 = find_match_gcov_info (tgt_infos, tgt_cnt, gi_ptr);
|
|
|
|
if (gi_ptr1 == NULL)
|
|
|
|
{
|
|
|
|
in_src_not_tgt[unmatch_info_cnt++] = gi_ptr;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
gcov_merge (gi_ptr1, gi_ptr, w2);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* For modules in src but not in tgt. We adjust the counter and append. */
|
|
|
|
for (i = 0; i < unmatch_info_cnt; i++)
|
|
|
|
{
|
|
|
|
gi_ptr = in_src_not_tgt[i];
|
|
|
|
gcov_merge (gi_ptr, gi_ptr, w2 - 1);
|
|
|
|
tgt_tail->next = gi_ptr;
|
|
|
|
tgt_tail = gi_ptr;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
typedef gcov_type (*counter_op_fn) (gcov_type, void*, void*);
|
|
|
|
|
|
|
|
/* Performing FN upon arc counters. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
__gcov_add_counter_op (gcov_type *counters, unsigned n_counters,
|
|
|
|
counter_op_fn fn, void *data1, void *data2)
|
|
|
|
{
|
|
|
|
for (; n_counters; counters++, n_counters--)
|
|
|
|
{
|
|
|
|
gcov_type val = *counters;
|
|
|
|
*counters = fn(val, data1, data2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Performing FN upon ior counters. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
__gcov_ior_counter_op (gcov_type *counters ATTRIBUTE_UNUSED,
|
|
|
|
unsigned n_counters ATTRIBUTE_UNUSED,
|
|
|
|
counter_op_fn fn ATTRIBUTE_UNUSED,
|
|
|
|
void *data1 ATTRIBUTE_UNUSED,
|
|
|
|
void *data2 ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
/* Do nothing. */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Performing FN upon time-profile counters. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
__gcov_time_profile_counter_op (gcov_type *counters ATTRIBUTE_UNUSED,
|
|
|
|
unsigned n_counters ATTRIBUTE_UNUSED,
|
|
|
|
counter_op_fn fn ATTRIBUTE_UNUSED,
|
|
|
|
void *data1 ATTRIBUTE_UNUSED,
|
|
|
|
void *data2 ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
/* Do nothing. */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Performaing FN upon delta counters. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
__gcov_delta_counter_op (gcov_type *counters, unsigned n_counters,
|
|
|
|
counter_op_fn fn, void *data1, void *data2)
|
|
|
|
{
|
|
|
|
unsigned i, n_measures;
|
|
|
|
|
|
|
|
gcc_assert (!(n_counters % 4));
|
|
|
|
n_measures = n_counters / 4;
|
|
|
|
for (i = 0; i < n_measures; i++, counters += 4)
|
|
|
|
{
|
|
|
|
counters[2] = fn (counters[2], data1, data2);
|
|
|
|
counters[3] = fn (counters[3], data1, data2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Performing FN upon single counters. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
__gcov_single_counter_op (gcov_type *counters, unsigned n_counters,
|
|
|
|
counter_op_fn fn, void *data1, void *data2)
|
|
|
|
{
|
|
|
|
unsigned i, n_measures;
|
|
|
|
|
|
|
|
gcc_assert (!(n_counters % 3));
|
|
|
|
n_measures = n_counters / 3;
|
|
|
|
for (i = 0; i < n_measures; i++, counters += 3)
|
|
|
|
{
|
|
|
|
counters[1] = fn (counters[1], data1, data2);
|
|
|
|
counters[2] = fn (counters[2], data1, data2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-10-07 06:02:31 +02:00
|
|
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/* Performing FN upon indirect-call profile counters. */
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static void
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__gcov_icall_topn_counter_op (gcov_type *counters, unsigned n_counters,
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counter_op_fn fn, void *data1, void *data2)
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{
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unsigned i;
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gcc_assert (!(n_counters % GCOV_ICALL_TOPN_NCOUNTS));
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for (i = 0; i < n_counters; i += GCOV_ICALL_TOPN_NCOUNTS)
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{
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unsigned j;
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gcov_type *value_array = &counters[i + 1];
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for (j = 0; j < GCOV_ICALL_TOPN_NCOUNTS - 1; j += 2)
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value_array[j + 1] = fn (value_array[j + 1], data1, data2);
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}
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}
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2014-07-11 07:48:07 +02:00
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/* Scaling the counter value V by multiplying *(float*) DATA1. */
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static gcov_type
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fp_scale (gcov_type v, void *data1, void *data2 ATTRIBUTE_UNUSED)
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{
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float f = *(float *) data1;
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return (gcov_type) (v * f);
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}
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/* Scaling the counter value V by multiplying DATA2/DATA1. */
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static gcov_type
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int_scale (gcov_type v, void *data1, void *data2)
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{
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int n = *(int *) data1;
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int d = *(int *) data2;
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return (gcov_type) ( RDIV (v,d) * n);
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}
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/* Type of function used to process counters. */
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typedef void (*gcov_counter_fn) (gcov_type *, gcov_unsigned_t,
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counter_op_fn, void *, void *);
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/* Function array to process profile counters. */
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#define DEF_GCOV_COUNTER(COUNTER, NAME, FN_TYPE) \
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__gcov ## FN_TYPE ## _counter_op,
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static gcov_counter_fn ctr_functions[GCOV_COUNTERS] = {
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#include "gcov-counter.def"
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};
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#undef DEF_GCOV_COUNTER
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/* Driver for scaling profile counters. */
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int
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gcov_profile_scale (struct gcov_info *profile, float scale_factor, int n, int d)
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{
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struct gcov_info *gi_ptr;
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unsigned f_ix;
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if (verbose)
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fnotice (stdout, "scale_factor is %f or %d/%d\n", scale_factor, n, d);
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/* Scaling the counters. */
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for (gi_ptr = profile; gi_ptr; gi_ptr = gi_ptr->next)
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for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++)
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{
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unsigned t_ix;
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const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix];
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const struct gcov_ctr_info *ci_ptr;
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if (!gfi_ptr || gfi_ptr->key != gi_ptr)
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continue;
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ci_ptr = gfi_ptr->ctrs;
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for (t_ix = 0; t_ix != GCOV_COUNTERS; t_ix++)
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{
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gcov_merge_fn merge = gi_ptr->merge[t_ix];
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if (!merge)
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continue;
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if (d == 0)
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(*ctr_functions[t_ix]) (ci_ptr->values, ci_ptr->num,
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fp_scale, &scale_factor, NULL);
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else
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(*ctr_functions[t_ix]) (ci_ptr->values, ci_ptr->num,
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int_scale, &n, &d);
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ci_ptr++;
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}
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}
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return 0;
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}
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|
|
/* Driver to normalize profile counters. */
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|
|
int
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|
|
gcov_profile_normalize (struct gcov_info *profile, gcov_type max_val)
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|
|
{
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|
|
struct gcov_info *gi_ptr;
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|
|
gcov_type curr_max_val = 0;
|
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|
|
unsigned f_ix;
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|
|
unsigned int i;
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|
|
float scale_factor;
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|
|
/* Find the largest count value. */
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|
|
for (gi_ptr = profile; gi_ptr; gi_ptr = gi_ptr->next)
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|
for (f_ix = 0; f_ix < gi_ptr->n_functions; f_ix++)
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|
|
{
|
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|
|
unsigned t_ix;
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|
|
const struct gcov_fn_info *gfi_ptr = gi_ptr->functions[f_ix];
|
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|
|
const struct gcov_ctr_info *ci_ptr;
|
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|
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|
|
if (!gfi_ptr || gfi_ptr->key != gi_ptr)
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|
continue;
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|
|
ci_ptr = gfi_ptr->ctrs;
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|
|
for (t_ix = 0; t_ix < 1; t_ix++)
|
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|
|
{
|
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|
|
for (i = 0; i < ci_ptr->num; i++)
|
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|
|
if (ci_ptr->values[i] > curr_max_val)
|
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|
|
curr_max_val = ci_ptr->values[i];
|
|
|
|
ci_ptr++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
scale_factor = (float)max_val / curr_max_val;
|
|
|
|
if (verbose)
|
|
|
|
fnotice (stdout, "max_val is %lld\n", (long long) curr_max_val);
|
|
|
|
|
|
|
|
return gcov_profile_scale (profile, scale_factor, 0, 0);
|
|
|
|
}
|