void
et_free_tree_force (struct et_node *t)
{
  et_occurrences.remove (t->rightmost_occ);
  if (t->parent_occ)
    et_occurrences.remove (t->parent_occ);
  et_nodes.remove (t);
}

void
et_free_tree (struct et_node *t)
{
  while (t->son)
    et_split (t->son);

  if (t->father)
    et_split (t);

  et_occurrences.remove (t->rightmost_occ);
  et_nodes.remove (t);
}

/* Create and return pseudo live range with given attributes.  */
static lra_live_range_t
create_live_range (int regno, int start, int finish, lra_live_range_t next)
{
  lra_live_range_t p = lra_live_range_pool.allocate ();
  p->regno = regno;
  p->start = start;
  p->finish = finish;
  p->next = next;
  return p;
}

/* Free live range list LR.  */
static void
free_live_range_list (lra_live_range_t lr)
{
  lra_live_range_t next;

  while (lr != NULL)
    {
      next = lr->next;
      lra_live_range_pool.remove (lr);
      lr = next;
    }
}

static void
free_debug_insn_changes (struct value_data *vd, unsigned int regno)
{
  struct queued_debug_insn_change *cur, *next;
  for (cur = vd->e[regno].debug_insn_changes; cur; cur = next)
    {
      next = cur->next;
      --vd->n_debug_insn_changes;
      queued_debug_insn_change_pool.remove (cur);
    }
  vd->e[regno].debug_insn_changes = NULL;
}