gcc/profile-count.c

   1 /* Profile counter container type.
   2    Copyright (C) 2017 Free Software Foundation, Inc.
   3    Contributed by Jan Hubicka
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "profile-count.h"
  25 #include "options.h"
  26 #include "tree.h"
  27 #include "basic-block.h"
  28 #include "cfg.h"
  29 #include "function.h"
  30 #include "gimple.h"
  31 #include "data-streamer.h"
  32 #include "cgraph.h"
  33
  34 void
  35 profile_count::dump (FILE *f) const
  36 {
  37   if (!initialized_p ())
  38     fprintf (f, "uninitialized");
  39   else
  40     {
  41       fprintf (f, "%" PRId64, m_val);
  42       if (m_quality == count_adjusted)
  43         fprintf (f, "(adjusted)");
  44       else if (m_quality == count_afdo)
  45         fprintf (f, "(auto FDO)");
  46       else if (m_quality == count_guessed)
  47         fprintf (f, "(guessed)");
  48     }
  49 }
  50
  51 void
  52 profile_count::debug () const
  53 {
  54   dump (stderr);
  55 }
  56
  57 bool
  58 profile_count::differs_from_p (profile_count other) const
  59 {
  60   if (!initialized_p () || !other.initialized_p ())
  61     return false;
  62   if (m_val - other.m_val < 100 || other.m_val - m_val < 100)
  63     return false;
  64   if (!other.m_val)
  65     return true;
  66   int64_t ratio = m_val * 100 / other.m_val;
  67   return ratio < 99 || ratio > 101;
  68 }
  69
  70 profile_count
  71 profile_count::stream_in (struct lto_input_block *ib)
  72 {
  73   profile_count ret;
  74   ret.m_val = streamer_read_gcov_count (ib);
  75   ret.m_quality = (profile_count_quality) streamer_read_uhwi (ib);
  76   return ret;
  77 }
  78
  79 void
  80 profile_count::stream_out (struct output_block *ob)
  81 {
  82   streamer_write_gcov_count (ob, m_val);
  83   streamer_write_uhwi (ob, m_quality);
  84 }
  85
  86 void
  87 profile_count::stream_out (struct lto_output_stream *ob)
  88 {
  89   streamer_write_gcov_count_stream (ob, m_val);
  90   streamer_write_uhwi_stream (ob, m_quality);
  91 }