Esempio n. 1
0
static unsigned int
tracer (void)
{
  bool changed;

  if (n_basic_blocks <= NUM_FIXED_BLOCKS + 1)
    return 0;

  mark_dfs_back_edges ();
  if (dump_file)
    brief_dump_cfg (dump_file, dump_flags);

  /* Trace formation is done on the fly inside tail_duplicate */
  changed = tail_duplicate ();
  if (changed)
    {
      free_dominance_info (CDI_DOMINATORS);
      /* If we changed the CFG schedule loops for fixup by cleanup_cfg.  */
      if (current_loops)
	loops_state_set (LOOPS_NEED_FIXUP);
    }

  if (dump_file)
    brief_dump_cfg (dump_file, dump_flags);

  return changed ? TODO_cleanup_cfg : 0;
}
Esempio n. 2
0
File: tracer.c Progetto: Lao16/gcc
static unsigned int
tracer (void)
{
  bool changed;

  if (n_basic_blocks <= NUM_FIXED_BLOCKS + 1)
    return 0;

  mark_dfs_back_edges ();
  if (dump_file)
    brief_dump_cfg (dump_file, dump_flags);

  /* Trace formation is done on the fly inside tail_duplicate */
  changed = tail_duplicate ();
  if (changed)
    {
      free_dominance_info (CDI_DOMINATORS);
      calculate_dominance_info (CDI_DOMINATORS);
      if (current_loops)
	fix_loop_structure (NULL);
    }

  if (dump_file)
    brief_dump_cfg (dump_file, dump_flags);

  return changed ? TODO_cleanup_cfg : 0;
}
Esempio n. 3
0
void
tracer (unsigned int flags)
{
  if (n_basic_blocks <= NUM_FIXED_BLOCKS + 1)
    return;

  cfg_layout_initialize (flags);
  mark_dfs_back_edges ();
  if (dump_file)
    dump_flow_info (dump_file, dump_flags);
  tail_duplicate ();
  layout_superblocks ();
  if (dump_file)
    dump_flow_info (dump_file, dump_flags);
  cfg_layout_finalize ();

  /* Merge basic blocks in duplicated traces.  */
  cleanup_cfg (CLEANUP_EXPENSIVE);
}
static unsigned int
tracer (void)
{
  gcc_assert (current_ir_type () == IR_GIMPLE);

  if (n_basic_blocks <= NUM_FIXED_BLOCKS + 1)
    return 0;

  mark_dfs_back_edges ();
  if (dump_file)
    dump_flow_info (dump_file, dump_flags);

  /* Trace formation is done on the fly inside tail_duplicate */
  tail_duplicate ();

  /* FIXME: We really only need to do this when we know tail duplication
            has altered the CFG. */
  free_dominance_info (CDI_DOMINATORS);
  if (dump_file)
    dump_flow_info (dump_file, dump_flags);

  return 0;
}
Esempio n. 5
0
void
tracer (void)
{
  if (n_basic_blocks <= 1)
    return;

  timevar_push (TV_TRACER);

  cfg_layout_initialize ();
  mark_dfs_back_edges ();
  if (rtl_dump_file)
    dump_flow_info (rtl_dump_file);
  tail_duplicate ();
  layout_superblocks ();
  if (rtl_dump_file)
    dump_flow_info (rtl_dump_file);
  cfg_layout_finalize ();

  /* Merge basic blocks in duplicated traces.  */
  cleanup_cfg (CLEANUP_EXPENSIVE);

  timevar_pop (TV_TRACER);
}