libjava/classpath/lib/java/util/LinkedHashMap$1.class

/* Natural loop discovery code for GNU compiler.
   Copyright (C) 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
   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.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
#include "hard-reg-set.h"
#include "obstack.h"
#include "function.h"
#include "basic-block.h"
#include "toplev.h"
#include "cfgloop.h"
#include "flags.h"
#include "tree.h"
#include "tree-flow.h"
#include "pointer-set.h"
#include "output.h"
#include "ggc.h"

static void flow_loops_cfg_dump (FILE *);

/* Dump loop related CFG information.  */

static void
flow_loops_cfg_dump (FILE *file)
{
  basic_block bb;

  if (!file)
    return;

  FOR_EACH_BB (bb)
    {
      edge succ;
      edge_iterator ei;

      fprintf (file, ";; %d succs { ", bb->index);
      FOR_EACH_EDGE (succ, ei, bb->succs)
	fprintf (file, "%d ", succ->dest->index);
      fprintf (file, "}\n");
    }
}

/* Return nonzero if the nodes of LOOP are a subset of OUTER.  */

bool
flow_loop_nested_p (const struct loop *outer, const struct loop *loop)
{
  unsigned odepth = loop_depth (outer);

  return (loop_depth (loop) > odepth
	  && VEC_index (loop_p, loop->superloops, odepth) == outer);
}

/* Returns the loop such that LOOP is nested DEPTH (indexed from zero)
   loops within LOOP.  */

struct loop *
superloop_at_depth (struct loop *loop, unsigned depth)
{
  unsigned ldepth = loop_depth (loop);

  gcc_assert (depth <= ldepth);

  if (depth == ldepth)
    return loop;

  return VEC_index (loop_p, loop->superloops, depth);
}

/* Returns the list of the latch edges of LOOP.  */

static VEC (edge, heap) *
get_loop_latch_edges (const struct loop *loop)
{
  edge_iterator ei;
  edge e;
  VEC (edge, heap) *ret = NULL;

  FOR_EACH_EDGE (e, ei, loop->header->preds)
    {
      if (dominated_by_p (CDI_DOMINATORS, e->src, loop->header))
	VEC_safe_push (edge, heap, ret, e);
    }

  return ret;
}

/* Dump the loop information specified by LOOP to the stream FILE
   using auxiliary dump callback function LOOP_DUMP_AUX if non null.  */

void
flow_loop_dump (const struct loop *loop, FILE *file,
		void (*loop_dump_aux) (const struct loop *, FILE *, int),
		int verbose)
{
  basic_block *bbs;
  unsigned i;
  VEC (edge, heap) *latches;
  edge e;

  if (! loop || ! loop->header)
    return;

  fprintf (file, ";;\n;; Loop %d\n", loop->num);

  fprintf (file, ";;  header %d, ", loop->header->index);
  if (loop->latch)
    fprintf (file, "latch %d\n", loop->latch->index);
  else
    {
      fprintf (file, "multiple latches:");
      latches = get_loop_latch_edges (loop);
      for (i = 0; VEC_iterate (edge, latches, i, e); i++)
	fprintf (file, " %d", e->src->index);
      VEC_free (edge, heap, latches);
      fprintf (file, "\n");
    }

  fprintf (file, ";;  depth %d, outer %ld\n",
	   loop_depth (loop), (long) (loop_outer (loop)
				      ? loop_outer (loop)->num : -1));

  fprintf (file, ";;  nodes:");
  bbs = get_loop_body (loop);
  for (i = 0; i < loop->num_nodes; i++)
    fprintf (file, " %d", bbs[i]->index);
  free (bbs);
  fprintf (file, "\n");

  if (loop_dump_aux)
    loop_dump_aux (loop, file, verbose);
}

/* Dump the loop information about loops to the stream FILE,
   using auxiliary dump callback function LOOP_DUMP_AUX if non null.  */

void
flow_loops_dump (FILE *file, void (*loop_dump_aux) (const struct loop *, FILE *, int), int verbose)
{
  loop_iterator li;
  struct loop *loop;

  if (!current_loops || ! file)
    return;

  fprintf (file, ";; %d loops found\n", number_of_loops ());

  FOR_EACH_LOOP (li, loop, LI_INCLUDE_ROOT)
    {
      flow_loop_dump (loop, file, loop_dump_aux, verbose);
    }

  if (verbose)
    flow_loops_cfg_dump (file);
}

/* Free data allocated for LOOP.  */

void
flow_loop_free (struct loop *loop)
{
  struct loop_exit *exit, *next;

  VEC_free (loop_p, gc, loop->superloops);

  /* Break the list of the loop exit records.  They will be freed when the
     corresponding edge is rescanned or removed, and this avoids
     accessing the (already released) head of the list stored in the
     loop structure.  */
  for (exit = loop->exits->next; exit != loop->exits; exit = next)
    {
      next = exit->next;
      exit->next = exit;
      exit->prev = exit;
    }

  ggc_free (loop->exits);
  ggc_free (loop);
}

/* Free all the memory allocated for LOOPS.  */

void
flow_loops_free (struct loops *loops)
{
  if (loops->larray)
    {
      unsigned i;
      loop_p loop;

      /* Free the loop descriptors.  */
      for (i = 0; VEC_iterate (loop_p, loops->larray, i, loop); i++)
	{
	  if (!loop)
	    continue;

	  flow_loop_free (loop);
	}

      VEC_free (loop_p, gc, loops->larray);
    }
}

/* Find the nodes contained within the LOOP with header HEADER.
   Return the number of nodes within the loop.  */

int
flow_loop_nodes_find (basic_block header, struct loop *loop)
{
  VEC (basic_block, heap) *stack = NULL;
  int num_nodes = 1;
  edge latch;
  edge_iterator latch_ei;
  unsigned depth = loop_depth (loop);

  header->loop_father = loop;
  header->loop_depth = depth;

  FOR_EACH_EDGE (latch, latch_ei, loop->header->preds)
    {
      if (latch->src->loop_father == loop
	  || !dominated_by_p (CDI_DOMINATORS, latch->src, loop->header))
	continue;

      num_nodes++;
      VEC_safe_push (basic_block, heap, stack, latch->src);
      latch->src->loop_father = loop;
      latch->src->loop_depth = depth;

      while (!VEC_empty (basic_block, stack))
	{
	  basic_block node;
	  edge e;
	  edge_iterator ei;

	  node = VEC_pop (basic_block, stack);

	  FOR_EACH_EDGE (e, ei, node->preds)
	    {
	      basic_block ancestor = e->src;

	      if (ancestor->loop_father != loop)
		{
		  ancestor->loop_father = loop;
		  ancestor->loop_depth = depth;
		  num_nodes++;
		  VEC_safe_push (basic_block, heap, stack, ancestor);
		}
	    }
	}
    }
  VEC_free (basic_block, heap, stack);

  return num_nodes;
}

/* Records the vector of superloops of the loop LOOP, whose immediate
   superloop is FATHER.  */

static void
establish_preds (struct loop *loop, struct loop *father)
{
  loop_p ploop;
  unsigned depth = loop_depth (father) + 1;
  unsigned i;

  VEC_truncate (loop_p, loop->superloops, 0);
  VEC_reserve (loop_p, gc, loop->superloops, depth);
  for (i = 0; VEC_iterate (loop_p, father->superloops, i, ploop); i++)
    VEC_quick_push (loop_p, loop->superloops, ploop);
  VEC_quick_push (loop_p, loop->superloops, father);

  for (ploop = loop->inner; ploop; ploop = ploop->next)
    establish_preds (ploop, loop);
}

/* Add LOOP to the loop hierarchy tree where FATHER is father of the
   added loop.  If LOOP has some children, take care of that their
   pred field will be initialized correctly.  */

void
flow_loop_tree_node_add (struct loop *father, struct loop *loop)
{
  loop->next = father->inner;
  father->inner = loop;

  establish_preds (loop, father);
}

/* Remove LOOP from the loop hierarchy tree.  */

void
flow_loop_tree_node_remove (struct loop *loop)
{
  struct loop *prev, *father;

  father = loop_outer (loop);

  /* Remove loop from the list of sons.  */
  if (father->inner == loop)
    father->inner = loop->next;
  else
    {
      for (prev = father->inner; prev->next != loop; prev = prev->next)
	continue;
      prev->next = loop->next;
    }

  VEC_truncate (loop_p, loop->superloops, 0);
}

/* Allocates and returns new loop structure.  */

struct loop *
alloc_loop (void)
{
  struct loop *loop = ggc_alloc_cleared_loop ();

  loop->exits = ggc_alloc_cleared_loop_exit ();
  loop->exits->next = loop->exits->prev = loop->exits;
  loop->can_be_parallel = false;
  loop->single_iv = NULL_TREE;

  return loop;
}

/* Initializes loops structure LOOPS, reserving place for NUM_LOOPS loops
   (including the root of the loop tree).  */

static void
init_loops_structure (struct loops *loops, unsigned num_loops)
{
  struct loop *root;

  memset (loops, 0, sizeof *loops);
  loops->larray = VEC_alloc (loop_p, gc, num_loops);

  /* Dummy loop containing whole function.  */
  root = alloc_loop ();
  root->num_nodes = n_basic_blocks;
  root->latch = EXIT_BLOCK_PTR;
  root->header = ENTRY_BLOCK_PTR;
  ENTRY_BLOCK_PTR->loop_father = root;
  EXIT_BLOCK_PTR->loop_father = root;

  VEC_quick_push (loop_p, loops->larray, root);
  loops->tree_root = root;
}

/* Find all the natural loops in the function and save in LOOPS structure and
   recalculate loop_depth information in basic block structures.
   Return the number of natural loops found.  */

int
flow_loops_find (struct loops *loops)
{
  int b;
  int num_loops;
  edge e;
  sbitmap headers;
  int *dfs_order;
  int *rc_order;
  basic_block header;
  basic_block bb;

  /* Ensure that the dominators are computed.  */
  calculate_dominance_info (CDI_DOMINATORS);

  /* Taking care of this degenerate case makes the rest of
     this code simpler.  */
  if (n_basic_blocks == NUM_FIXED_BLOCKS)
    {
      init_loops_structure (loops, 1);
      return 1;
    }

  dfs_order = NULL;
  rc_order = NULL;

  /* Count the number of loop headers.  This should be the
     same as the number of natural loops.  */
  headers = sbitmap_alloc (last_basic_block);
  sbitmap_zero (headers);

  num_loops = 0;
  FOR_EACH_BB (header)
    {
      edge_iterator ei;

      header->loop_depth = 0;

      /* If we have an abnormal predecessor, do not consider the
	 loop (not worth the problems).  */
      FOR_EACH_EDGE (e, ei, header->preds)
	if (e->flags & EDGE_ABNORMAL)
	  break;
      if (e)
	continue;

      FOR_EACH_EDGE (e, ei, header->preds)
	{
	  basic_block latch = e->src;

	  gcc_assert (!(e->flags & EDGE_ABNORMAL));

	  /* Look for back edges where a predecessor is dominated
	     by this block.  A natural loop has a single entry
	     node (header) that dominates all the nodes in the
	     loop.  It also has single back edge to the header
	     from a latch node.  */
	  if (latch != ENTRY_BLOCK_PTR
	      && dominated_by_p (CDI_DOMINATORS, latch, header))
	    {
	      /* Shared headers should be eliminated by now.  */
	      SET_BIT (headers, header->index);
	      num_loops++;
	    }
	}
    }

  /* Allocate loop structures.  */
  init_loops_structure (loops, num_loops + 1);

  /* Find and record information about all the natural loops
     in the CFG.  */
  FOR_EACH_BB (bb)
    bb->loop_father = loops->tree_root;

  if (num_loops)
    {
      /* Compute depth first search order of the CFG so that outer
	 natural loops will be found before inner natural loops.  */
      dfs_order = XNEWVEC (int, n_basic_blocks);
      rc_order = XNEWVEC (int, n_basic_blocks);
      pre_and_rev_post_order_compute (dfs_order, rc_order, false);

      num_loops = 1;

      for (b = 0; b < n_basic_blocks - NUM_FIXED_BLOCKS; b++)
	{
	  struct loop *loop;
	  edge_iterator ei;

	  /* Search the nodes of the CFG in reverse completion order
	     so that we can find outer loops first.  */
	  if (!TEST_BIT (headers, rc_order[b]))
	    continue;

	  header = BASIC_BLOCK (rc_order[b]);

	  loop = alloc_loop ();
	  VEC_quick_push (loop_p, loops->larray, loop);

	  loop->header = header;
	  loop->num = num_loops;
	  num_loops++;

	  flow_loop_tree_node_add (header->loop_father, loop);
	  loop->num_nodes = flow_loop_nodes_find (loop->header, loop);

	  /* Look for the latch for this header block, if it has just a
	     single one.  */
	  FOR_EACH_EDGE (e, ei, header->preds)
	    {
	      basic_block latch = e->src;

	      if (flow_bb_inside_loop_p (loop, latch))
		{
		  if (loop->latch != NULL)
		    {
		      /* More than one latch edge.  */
		      loop->latch = NULL;
		      break;
		    }
		  loop->latch = latch;
		}
	    }
	}

      free (dfs_order);
      free (rc_order);
    }

  sbitmap_free (headers);

  loops->exits = NULL;
  return VEC_length (loop_p, loops->larray);
}

/* Ratio of frequencies of edges so that one of more latch edges is
   considered to belong to inner loop with same header.  */
#define HEAVY_EDGE_RATIO 8

/* Minimum number of samples for that we apply
   find_subloop_latch_edge_by_profile heuristics.  */
#define HEAVY_EDGE_MIN_SAMPLES 10

/* If the profile info is available, finds an edge in LATCHES that much more
   frequent than the remaining edges.  Returns such an edge, or NULL if we do
   not find one.

   We do not use guessed profile here, only the measured one.  The guessed
   profile is usually too flat and unreliable for this (and it is mostly based
   on the loop structure of the program, so it does not make much sense to
   derive the loop structure from it).  */

static edge
find_subloop_latch_edge_by_profile (VEC (edge, heap) *latches)
{
  unsigned i;
  edge e, me = NULL;
  gcov_type mcount = 0, tcount = 0;

  for (i = 0; VEC_iterate (edge, latches, i, e); i++)
    {
      if (e->count > mcount)
	{
	  me = e;
	  mcount = e->count;
	}
      tcount += e->count;
    }

  if (tcount < HEAVY_EDGE_MIN_SAMPLES
      || (tcount - mcount) * HEAVY_EDGE_RATIO > tcount)
    return NULL;

  if (dump_file)
    fprintf (dump_file,
	     "Found latch edge %d -> %d using profile information.\n",
	     me->src->index, me->dest->index);
  return me;
}

/* Among LATCHES, guesses a latch edge of LOOP corresponding to subloop, based
   on the structure of induction variables.  Returns this edge, or NULL if we
   do not find any.

   We are quite conservative, and look just for an obvious simple innermost
   loop (which is the case where we would lose the most performance by not
   disambiguating the loop).  More precisely, we look for the following
   situation: The source of the chosen latch edge dominates sources of all
   the other latch edges.  Additionally, the header does not contain a phi node
   such that the argument from the chosen edge is equal to the argument from
   another edge.  */

static edge
find_subloop_latch_edge_by_ivs (struct loop *loop ATTRIBUTE_UNUSED, VEC (edge, heap) *latches)
{
  edge e, latch = VEC_index (edge, latches, 0);
  unsigned i;
  gimple phi;
  gimple_stmt_iterator psi;
  tree lop;
  basic_block bb;

  /* Find the candidate for the latch edge.  */
  for (i = 1; VEC_iterate (edge, latches, i, e); i++)
    if (dominated_by_p (CDI_DOMINATORS, latch->src, e->src))
      latch = e;

  /* Verify that it dominates all the latch edges.  */
  for (i = 0; VEC_iterate (edge, latches, i, e); i++)
    if (!dominated_by_p (CDI_DOMINATORS, e->src, latch->src))
      return NULL;

  /* Check for a phi node that would deny that this is a latch edge of
     a subloop.  */
  for (psi = gsi_start_phis (loop->header); !gsi_end_p (psi); gsi_next (&psi))
    {
      phi = gsi_stmt (psi);
      lop = PHI_ARG_DEF_FROM_EDGE (phi, latch);

      /* Ignore the values that are not changed inside the subloop.  */
      if (TREE_CODE (lop) != SSA_NAME
	  || SSA_NAME_DEF_STMT (lop) == phi)
	continue;
      bb = gimple_bb (SSA_NAME_DEF_STMT (lop));
      if (!bb || !flow_bb_inside_loop_p (loop, bb))
	continue;

      for (i = 0; VEC_iterate (edge, latches, i, e); i++)
	if (e != latch
	    && PHI_ARG_DEF_FROM_EDGE (phi, e) == lop)
	  return NULL;
    }

  if (dump_file)
    fprintf (dump_file,
	     "Found latch edge %d -> %d using iv structure.\n",
	     latch->src->index, latch->dest->index);
  return latch;
}

/* If we can determine that one of the several latch edges of LOOP behaves
   as a latch edge of a separate subloop, returns this edge.  Otherwise
   returns NULL.  */

static edge
find_subloop_latch_edge (struct loop *loop)
{
  VEC (edge, heap) *latches = get_loop_latch_edges (loop);
  edge latch = NULL;

  if (VEC_length (edge, latches) > 1)
    {
      latch = find_subloop_latch_edge_by_profile (latches);

      if (!latch
	  /* We consider ivs to guess the latch edge only in SSA.  Perhaps we
	     should use cfghook for this, but it is hard to imagine it would
	     be useful elsewhere.  */
	  && current_ir_type () == IR_GIMPLE)
	latch = find_subloop_latch_edge_by_ivs (loop, latches);
    }

  VEC_free (edge, heap, latches);
  return latch;
}

/* Callback for make_forwarder_block.  Returns true if the edge E is marked
   in the set MFB_REIS_SET.  */

static struct pointer_set_t *mfb_reis_set;
static bool
mfb_redirect_edges_in_set (edge e)
{
  return pointer_set_contains (mfb_reis_set, e);
}

/* Creates a subloop of LOOP with latch edge LATCH.  */

static void
form_subloop (struct loop *loop, edge latch)
{
  edge_iterator ei;
  edge e, new_entry;
  struct loop *new_loop;

  mfb_reis_set = pointer_set_create ();
  FOR_EACH_EDGE (e, ei, loop->header->preds)
    {
      if (e != latch)
	pointer_set_insert (mfb_reis_set, e);
    }
  new_entry = make_forwarder_block (loop->header, mfb_redirect_edges_in_set,
				    NULL);
  pointer_set_destroy (mfb_reis_set);

  loop->header = new_entry->src;

  /* Find the blocks and subloops that belong to the new loop, and add it to
     the appropriate place in the loop tree.  */
  new_loop = alloc_loop ();
  new_loop->header = new_entry->dest;
  new_loop->latch = latch->src;
  add_loop (new_loop, loop);
}

/* Make all the latch edges of LOOP to go to a single forwarder block --
   a new latch of LOOP.  */

static void
merge_latch_edges (struct loop *loop)
{
  VEC (edge, heap) *latches = get_loop_latch_edges (loop);
  edge latch, e;
  unsigned i;

  gcc_assert (VEC_length (edge, latches) > 0);

  if (VEC_length (edge, latches) == 1)
    loop->latch = VEC_index (edge, latches, 0)->src;
  else
    {
      if (dump_file)
	fprintf (dump_file, "Merged latch edges of loop %d\n", loop->num);

      mfb_reis_set = pointer_set_create ();
      for (i = 0; VEC_iterate (edge, latches, i, e); i++)
	pointer_set_insert (mfb_reis_set, e);
      latch = make_forwarder_block (loop->header, mfb_redirect_edges_in_set,
				    NULL);
      pointer_set_destroy (mfb_reis_set);

      loop->header = latch->dest;
      loop->latch = latch->src;
    }

  VEC_free (edge, heap, latches);
}

/* LOOP may have several latch edges.  Transform it into (possibly several)
   loops with single latch edge.  */

static void
disambiguate_multiple_latches (struct loop *loop)
{
  edge e;

  /* We eliminate the multiple latches by splitting the header to the forwarder
     block F and the rest R, and redirecting the edges.  There are two cases:

     1) If there is a latch edge E that corresponds to a subloop (we guess
        that based on profile -- if it is taken much more often than the
	remaining edges; and on trees, using the information about induction
	variables of the loops), we redirect E to R, all the remaining edges to
	F, then rescan the loops and try again for the outer loop.
     2) If there is no such edge, we redirect all latch edges to F, and the
        entry edges to R, thus making F the single latch of the loop.  */

  if (dump_file)
    fprintf (dump_file, "Disambiguating loop %d with multiple latches\n",
	     loop->num);

  /* During latch merging, we may need to redirect the entry edges to a new
     block.  This would cause problems if the entry edge was the one from the
     entry block.  To avoid having to handle this case specially, split
     such entry edge.  */
  e = find_edge (ENTRY_BLOCK_PTR, loop->header);
  if (e)
    split_edge (e);

  while (1)
    {
      e = find_subloop_latch_edge (loop);
      if (!e)
	break;

      form_subloop (loop, e);
    }

  merge_latch_edges (loop);
}

/* Split loops with multiple latch edges.  */

void
disambiguate_loops_with_multiple_latches (void)
{
  loop_iterator li;
  struct loop *loop;

  FOR_EACH_LOOP (li, loop, 0)
    {
      if (!loop->latch)
	disambiguate_multiple_latches (loop);
    }
}

/* Return nonzero if basic block BB belongs to LOOP.  */
bool
flow_bb_inside_loop_p (const struct loop *loop, const_basic_block bb)
{
  struct loop *source_loop;

  if (bb == ENTRY_BLOCK_PTR || bb == EXIT_BLOCK_PTR)
    return 0;

  source_loop = bb->loop_father;
  return loop == source_loop || flow_loop_nested_p (loop, source_loop);
}

/* Enumeration predicate for get_loop_body_with_size.  */
static bool
glb_enum_p (const_basic_block bb, const void *glb_loop)
{
  const struct loop *const loop = (const struct loop *) glb_loop;
  return (bb != loop->header
	  && dominated_by_p (CDI_DOMINATORS, bb, loop->header));
}

/* Gets basic blocks of a LOOP.  Header is the 0-th block, rest is in dfs
   order against direction of edges from latch.  Specially, if
   header != latch, latch is the 1-st block.  LOOP cannot be the fake
   loop tree root, and its size must be at most MAX_SIZE.  The blocks
   in the LOOP body are stored to BODY, and the size of the LOOP is
   returned.  */

unsigned
get_loop_body_with_size (const struct loop *loop, basic_block *body,
			 unsigned max_size)
{
  return dfs_enumerate_from (loop->header, 1, glb_enum_p,
			     body, max_size, loop);
}

/* Gets basic blocks of a LOOP.  Header is the 0-th block, rest is in dfs
   order against direction of edges from latch.  Specially, if
   header != latch, latch is the 1-st block.  */

basic_block *
get_loop_body (const struct loop *loop)
{
  basic_block *body, bb;
  unsigned tv = 0;

  gcc_assert (loop->num_nodes);

  body = XCNEWVEC (basic_block, loop->num_nodes);

  if (loop->latch == EXIT_BLOCK_PTR)
    {
      /* There may be blocks unreachable from EXIT_BLOCK, hence we need to
	 special-case the fake loop that contains the whole function.  */
      gcc_assert (loop->num_nodes == (unsigned) n_basic_blocks);
      body[tv++] = loop->header;
      body[tv++] = EXIT_BLOCK_PTR;
      FOR_EACH_BB (bb)
	body[tv++] = bb;
    }
  else
    tv = get_loop_body_with_size (loop, body, loop->num_nodes);

  gcc_assert (tv == loop->num_nodes);
  return body;
}

/* Fills dominance descendants inside LOOP of the basic block BB into
   array TOVISIT from index *TV.  */

static void
fill_sons_in_loop (const struct loop *loop, basic_block bb,
		   basic_block *tovisit, int *tv)
{
  basic_block son, postpone = NULL;

  tovisit[(*tv)++] = bb;
  for (son = first_dom_son (CDI_DOMINATORS, bb);
       son;
       son = next_dom_son (CDI_DOMINATORS, son))
    {
      if (!flow_bb_inside_loop_p (loop, son))
	continue;

      if (dominated_by_p (CDI_DOMINATORS, loop->latch, son))
	{
	  postpone = son;
	  continue;
	}
      fill_sons_in_loop (loop, son, tovisit, tv);
    }

  if (postpone)
    fill_sons_in_loop (loop, postpone, tovisit, tv);
}

/* Gets body of a LOOP (that must be different from the outermost loop)
   sorted by dominance relation.  Additionally, if a basic block s dominates
   the latch, then only blocks dominated by s are be after it.  */

basic_block *
get_loop_body_in_dom_order (const struct loop *loop)
{
  basic_block *tovisit;
  int tv;

  gcc_assert (loop->num_nodes);

  tovisit = XCNEWVEC (basic_block, loop->num_nodes);

  gcc_assert (loop->latch != EXIT_BLOCK_PTR);

  tv = 0;
  fill_sons_in_loop (loop, loop->header, tovisit, &tv);

  gcc_assert (tv == (int) loop->num_nodes);

  return tovisit;
}

/* Gets body of a LOOP sorted via provided BB_COMPARATOR.  */

basic_block *
get_loop_body_in_custom_order (const struct loop *loop,
			       int (*bb_comparator) (const void *, const void *))
{
  basic_block *bbs = get_loop_body (loop);

  qsort (bbs, loop->num_nodes, sizeof (basic_block), bb_comparator);

  return bbs;
}

/* Get body of a LOOP in breadth first sort order.  */

basic_block *
get_loop_body_in_bfs_order (const struct loop *loop)
{
  basic_block *blocks;
  basic_block bb;
  bitmap visited;
  unsigned int i = 0;
  unsigned int vc = 1;

  gcc_assert (loop->num_nodes);
  gcc_assert (loop->latch != EXIT_BLOCK_PTR);

  blocks = XCNEWVEC (basic_block, loop->num_nodes);
  visited = BITMAP_ALLOC (NULL);

  bb = loop->header;
  while (i < loop->num_nodes)
    {
      edge e;
      edge_iterator ei;

      if (!bitmap_bit_p (visited, bb->index))
	{
	  /* This basic block is now visited */
	  bitmap_set_bit (visited, bb->index);
	  blocks[i++] = bb;
	}

      FOR_EACH_EDGE (e, ei, bb->succs)
	{
	  if (flow_bb_inside_loop_p (loop, e->dest))
	    {
	      if (!bitmap_bit_p (visited, e->dest->index))
		{
		  bitmap_set_bit (visited, e->dest->index);
		  blocks[i++] = e->dest;
		}
	    }
	}

      gcc_assert (i >= vc);

      bb = blocks[vc++];
    }

  BITMAP_FREE (visited);
  return blocks;
}

/* Hash function for struct loop_exit.  */

static hashval_t
loop_exit_hash (const void *ex)
{
  const struct loop_exit *const exit = (const struct loop_exit *) ex;

  return htab_hash_pointer (exit->e);
}

/* Equality function for struct loop_exit.  Compares with edge.  */

static int
loop_exit_eq (const void *ex, const void *e)
{
  const struct loop_exit *const exit = (const struct loop_exit *) ex;

  return exit->e == e;
}

/* Frees the list of loop exit descriptions EX.  */

static void
loop_exit_free (void *ex)
{
  struct loop_exit *exit = (struct loop_exit *) ex, *next;

  for (; exit; exit = next)
    {
      next = exit->next_e;

      exit->next->prev = exit->prev;
      exit->prev->next = exit->next;

      ggc_free (exit);
    }
}

/* Returns the list of records for E as an exit of a loop.  */

static struct loop_exit *
get_exit_descriptions (edge e)
{
  return (struct loop_exit *) htab_find_with_hash (current_loops->exits, e,
			                           htab_hash_pointer (e));
}

/* Updates the lists of loop exits in that E appears.
   If REMOVED is true, E is being removed, and we
   just remove it from the lists of exits.
   If NEW_EDGE is true and E is not a loop exit, we
   do not try to remove it from loop exit lists.  */

void
rescan_loop_exit (edge e, bool new_edge, bool removed)
{
  void **slot;
  struct loop_exit *exits = NULL, *exit;
  struct loop *aloop, *cloop;

  if (!loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS))
    return;

  if (!removed
      && e->src->loop_father != NULL
      && e->dest->loop_father != NULL
      && !flow_bb_inside_loop_p (e->src->loop_father, e->dest))
    {
      cloop = find_common_loop (e->src->loop_father, e->dest->loop_father);
      for (aloop = e->src->loop_father;
	   aloop != cloop;
	   aloop = loop_outer (aloop))
	{
	  exit = ggc_alloc_loop_exit ();
	  exit->e = e;

	  exit->next = aloop->exits->next;
	  exit->prev = aloop->exits;
	  exit->next->prev = exit;
	  exit->prev->next = exit;

	  exit->next_e = exits;
	  exits = exit;
	}
    }

  if (!exits && new_edge)
    return;

  slot = htab_find_slot_with_hash (current_loops->exits, e,
				   htab_hash_pointer (e),
				   exits ? INSERT : NO_INSERT);
  if (!slot)
    return;

  if (exits)
    {
      if (*slot)
	loop_exit_free (*slot);
      *slot = exits;
    }
  else
    htab_clear_slot (current_loops->exits, slot);
}

/* For each loop, record list of exit edges, and start maintaining these
   lists.  */

void
record_loop_exits (void)
{
  basic_block bb;
  edge_iterator ei;
  edge e;

  if (!current_loops)
    return;

  if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS))
    return;
  loops_state_set (LOOPS_HAVE_RECORDED_EXITS);

  gcc_assert (current_loops->exits == NULL);
  current_loops->exits = htab_create_ggc (2 * number_of_loops (),
					  loop_exit_hash, loop_exit_eq,
					  loop_exit_free);

  FOR_EACH_BB (bb)
    {
      FOR_EACH_EDGE (e, ei, bb->succs)
	{
	  rescan_loop_exit (e, true, false);
	}
    }
}

/* Dumps information about the exit in *SLOT to FILE.
   Callback for htab_traverse.  */

static int
dump_recorded_exit (void **slot, void *file)
{
  struct loop_exit *exit = (struct loop_exit *) *slot;
  unsigned n = 0;
  edge e = exit->e;

  for (; exit != NULL; exit = exit->next_e)
    n++;

  fprintf ((FILE*) file, "Edge %d->%d exits %u loops\n",
	   e->src->index, e->dest->index, n);

  return 1;
}

/* Dumps the recorded exits of loops to FILE.  */

extern void dump_recorded_exits (FILE *);
void
dump_recorded_exits (FILE *file)
{
  if (!current_loops->exits)
    return;
  htab_traverse (current_loops->exits, dump_recorded_exit, file);
}

/* Releases lists of loop exits.  */

void
release_recorded_exits (void)
{
  gcc_assert (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS));
  htab_delete (current_loops->exits);
  current_loops->exits = NULL;
  loops_state_clear (LOOPS_HAVE_RECORDED_EXITS);
}

/* Returns the list of the exit edges of a LOOP.  */

VEC (edge, heap) *
get_loop_exit_edges (const struct loop *loop)
{
  VEC (edge, heap) *edges = NULL;
  edge e;
  unsigned i;
  basic_block *body;
  edge_iterator ei;
  struct loop_exit *exit;

  gcc_assert (loop->latch != EXIT_BLOCK_PTR);

  /* If we maintain the lists of exits, use them.  Otherwise we must
     scan the body of the loop.  */
  if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS))
    {
      for (exit = loop->exits->next; exit->e; exit = exit->next)
	VEC_safe_push (edge, heap, edges, exit->e);
    }
  else
    {
      body = get_loop_body (loop);
      for (i = 0; i < loop->num_nodes; i++)
	FOR_EACH_EDGE (e, ei, body[i]->succs)
	  {
	    if (!flow_bb_inside_loop_p (loop, e->dest))
	      VEC_safe_push (edge, heap, edges, e);
	  }
      free (body);
    }

  return edges;
}

/* Counts the number of conditional branches inside LOOP.  */

unsigned
num_loop_branches (const struct loop *loop)
{
  unsigned i, n;
  basic_block * body;

  gcc_assert (loop->latch != EXIT_BLOCK_PTR);

  body = get_loop_body (loop);
  n = 0;
  for (i = 0; i < loop->num_nodes; i++)
    if (EDGE_COUNT (body[i]->succs) >= 2)
      n++;
  free (body);

  return n;
}

/* Adds basic block BB to LOOP.  */
void
add_bb_to_loop (basic_block bb, struct loop *loop)
{
  unsigned i;
  loop_p ploop;
  edge_iterator ei;
  edge e;

  gcc_assert (bb->loop_father == NULL);
  bb->loop_father = loop;
  bb->loop_depth = loop_depth (loop);
  loop->num_nodes++;
  for (i = 0; VEC_iterate (loop_p, loop->superloops, i, ploop); i++)
    ploop->num_nodes++;

  FOR_EACH_EDGE (e, ei, bb->succs)
    {
      rescan_loop_exit (e, true, false);
    }
  FOR_EACH_EDGE (e, ei, bb->preds)
    {
      rescan_loop_exit (e, true, false);
    }
}

/* Remove basic block BB from loops.  */
void
remove_bb_from_loops (basic_block bb)
{
  int i;
  struct loop *loop = bb->loop_father;
  loop_p ploop;
  edge_iterator ei;
  edge e;

  gcc_assert (loop != NULL);
  loop->num_nodes--;
  for (i = 0; VEC_iterate (loop_p, loop->superloops, i, ploop); i++)
    ploop->num_nodes--;
  bb->loop_father = NULL;
  bb->loop_depth = 0;

  FOR_EACH_EDGE (e, ei, bb->succs)
    {
      rescan_loop_exit (e, false, true);
    }
  FOR_EACH_EDGE (e, ei, bb->preds)
    {
      rescan_loop_exit (e, false, true);
    }
}

/* Finds nearest common ancestor in loop tree for given loops.  */
struct loop *
find_common_loop (struct loop *loop_s, struct loop *loop_d)
{
  unsigned sdepth, ddepth;

  if (!loop_s) return loop_d;
  if (!loop_d) return loop_s;

  sdepth = loop_depth (loop_s);
  ddepth = loop_depth (loop_d);

  if (sdepth < ddepth)
    loop_d = VEC_index (loop_p, loop_d->superloops, sdepth);
  else if (sdepth > ddepth)
    loop_s = VEC_index (loop_p, loop_s->superloops, ddepth);

  while (loop_s != loop_d)
    {
      loop_s = loop_outer (loop_s);
      loop_d = loop_outer (loop_d);
    }
  return loop_s;
}

/* Removes LOOP from structures and frees its data.  */

void
delete_loop (struct loop *loop)
{
  /* Remove the loop from structure.  */
  flow_loop_tree_node_remove (loop);

  /* Remove loop from loops array.  */
  VEC_replace (loop_p, current_loops->larray, loop->num, NULL);

  /* Free loop data.  */
  flow_loop_free (loop);
}

/* Cancels the LOOP; it must be innermost one.  */

static void
cancel_loop (struct loop *loop)
{
  basic_block *bbs;
  unsigned i;
  struct loop *outer = loop_outer (loop);

  gcc_assert (!loop->inner);

  /* Move blocks up one level (they should be removed as soon as possible).  */
  bbs = get_loop_body (loop);
  for (i = 0; i < loop->num_nodes; i++)
    bbs[i]->loop_father = outer;

  delete_loop (loop);
}

/* Cancels LOOP and all its subloops.  */
void
cancel_loop_tree (struct loop *loop)
{
  while (loop->inner)
    cancel_loop_tree (loop->inner);
  cancel_loop (loop);
}

/* Checks that information about loops is correct
     -- sizes of loops are all right
     -- results of get_loop_body really belong to the loop
     -- loop header have just single entry edge and single latch edge
     -- loop latches have only single successor that is header of their loop
     -- irreducible loops are correctly marked
  */
DEBUG_FUNCTION void
verify_loop_structure (void)
{
  unsigned *sizes, i, j;
  sbitmap irreds;
  basic_block *bbs, bb;
  struct loop *loop;
  int err = 0;
  edge e;
  unsigned num = number_of_loops ();
  loop_iterator li;
  struct loop_exit *exit, *mexit;

  /* Check sizes.  */
  sizes = XCNEWVEC (unsigned, num);
  sizes[0] = 2;

  FOR_EACH_BB (bb)
    for (loop = bb->loop_father; loop; loop = loop_outer (loop))
      sizes[loop->num]++;

  FOR_EACH_LOOP (li, loop, LI_INCLUDE_ROOT)
    {
      i = loop->num;

      if (loop->num_nodes != sizes[i])
	{
	  error ("size of loop %d should be %d, not %d",
		   i, sizes[i], loop->num_nodes);
	  err = 1;
	}
    }

  /* Check get_loop_body.  */
  FOR_EACH_LOOP (li, loop, 0)
    {
      bbs = get_loop_body (loop);

      for (j = 0; j < loop->num_nodes; j++)
	if (!flow_bb_inside_loop_p (loop, bbs[j]))
	  {
	    error ("bb %d do not belong to loop %d",
		    bbs[j]->index, loop->num);
	    err = 1;
	  }
      free (bbs);
    }

  /* Check headers and latches.  */
  FOR_EACH_LOOP (li, loop, 0)
    {
      i = loop->num;

      if (loops_state_satisfies_p (LOOPS_HAVE_PREHEADERS)
	  && EDGE_COUNT (loop->header->preds) != 2)
	{
	  error ("loop %d's header does not have exactly 2 entries", i);
	  err = 1;
	}
      if (loops_state_satisfies_p (LOOPS_HAVE_SIMPLE_LATCHES))
	{
	  if (!single_succ_p (loop->latch))
	    {
	      error ("loop %d's latch does not have exactly 1 successor", i);
	      err = 1;
	    }
	  if (single_succ (loop->latch) != loop->header)
	    {
	      error ("loop %d's latch does not have header as successor", i);
	      err = 1;
	    }
	  if (loop->latch->loop_father != loop)
	    {
	      error ("loop %d's latch does not belong directly to it", i);
	      err = 1;
	    }
	}
      if (loop->header->loop_father != loop)
	{
	  error ("loop %d's header does not belong directly to it", i);
	  err = 1;
	}
      if (loops_state_satisfies_p (LOOPS_HAVE_MARKED_IRREDUCIBLE_REGIONS)
	  && (loop_latch_edge (loop)->flags & EDGE_IRREDUCIBLE_LOOP))
	{
	  error ("loop %d's latch is marked as part of irreducible region", i);
	  err = 1;
	}
    }

  /* Check irreducible loops.  */
  if (loops_state_satisfies_p (LOOPS_HAVE_MARKED_IRREDUCIBLE_REGIONS))
    {
      /* Record old info.  */
      irreds = sbitmap_alloc (last_basic_block);
      FOR_EACH_BB (bb)
	{
	  edge_iterator ei;
	  if (bb->flags & BB_IRREDUCIBLE_LOOP)
	    SET_BIT (irreds, bb->index);
	  else
	    RESET_BIT (irreds, bb->index);
	  FOR_EACH_EDGE (e, ei, bb->succs)
	    if (e->flags & EDGE_IRREDUCIBLE_LOOP)
	      e->flags |= EDGE_ALL_FLAGS + 1;
	}

      /* Recount it.  */
      mark_irreducible_loops ();

      /* Compare.  */
      FOR_EACH_BB (bb)
	{
	  edge_iterator ei;

	  if ((bb->flags & BB_IRREDUCIBLE_LOOP)
	      && !TEST_BIT (irreds, bb->index))
	    {
	      error ("basic block %d should be marked irreducible", bb->index);
	      err = 1;
	    }
	  else if (!(bb->flags & BB_IRREDUCIBLE_LOOP)
	      && TEST_BIT (irreds, bb->index))
	    {
	      error ("basic block %d should not be marked irreducible", bb->index);
	      err = 1;
	    }
	  FOR_EACH_EDGE (e, ei, bb->succs)
	    {
	      if ((e->flags & EDGE_IRREDUCIBLE_LOOP)
		  && !(e->flags & (EDGE_ALL_FLAGS + 1)))
		{
		  error ("edge from %d to %d should be marked irreducible",
			 e->src->index, e->dest->index);
		  err = 1;
		}
	      else if (!(e->flags & EDGE_IRREDUCIBLE_LOOP)
		       && (e->flags & (EDGE_ALL_FLAGS + 1)))
		{
		  error ("edge from %d to %d should not be marked irreducible",
			 e->src->index, e->dest->index);
		  err = 1;
		}
	      e->flags &= ~(EDGE_ALL_FLAGS + 1);
	    }
	}
      free (irreds);
    }

  /* Check the recorded loop exits.  */
  FOR_EACH_LOOP (li, loop, 0)
    {
      if (!loop->exits || loop->exits->e != NULL)
	{
	  error ("corrupted head of the exits list of loop %d",
		 loop->num);
	  err = 1;
	}
      else
	{
	  /* Check that the list forms a cycle, and all elements except
	     for the head are nonnull.  */
	  for (mexit = loop->exits, exit = mexit->next, i = 0;
	       exit->e && exit != mexit;
	       exit = exit->next)
	    {
	      if (i++ & 1)
		mexit = mexit->next;
	    }

	  if (exit != loop->exits)
	    {
	      error ("corrupted exits list of loop %d", loop->num);
	      err = 1;
	    }
	}

      if (!loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS))
	{
ofs	hex dump	ascii
0000	ca fe ba be 00 00 00 31 00 4f 07 00 02 01 00 19 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b 65 64	.......1.O......java/util/Linked
0020	48 61 73 68 4d 61 70 24 31 07 00 04 01 00 10 6a 61 76 61 2f 6c 61 6e 67 2f 4f 62 6a 65 63 74 07	HashMap$1......java/lang/Object.
0040	00 06 01 00 12 6a 61 76 61 2f 75 74 69 6c 2f 49 74 65 72 61 74 6f 72 01 00 07 63 75 72 72 65 6e	.....java/util/Iterator...curren
0060	74 01 00 29 4c 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b 65 64 48 61 73 68 4d 61 70 24 4c 69 6e	t..)Ljava/util/LinkedHashMap$Lin
0080	6b 65 64 48 61 73 68 45 6e 74 72 79 3b 01 00 04 6c 61 73 74 01 00 08 6b 6e 6f 77 6e 4d 6f 64 01	kedHashEntry;...last...knownMod.
00a0	00 01 49 01 00 06 74 68 69 73 24 30 01 00 19 4c 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b 65 64	..I...this$0...Ljava/util/Linked
00c0	48 61 73 68 4d 61 70 3b 01 00 08 76 61 6c 24 74 79 70 65 01 00 06 3c 69 6e 69 74 3e 01 00 1d 28	HashMap;...val$type...<init>...(
00e0	4c 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b 65 64 48 61 73 68 4d 61 70 3b 49 29 56 01 00 04 43	Ljava/util/LinkedHashMap;I)V...C
0100	6f 64 65 09 00 01 00 13 0c 00 0c 00 0d 09 00 01 00 15 0c 00 0e 00 0b 0a 00 03 00 17 0c 00 0f 00	ode.............................
0120	18 01 00 03 28 29 56 09 00 1a 00 1c 07 00 1b 01 00 17 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b	....()V...........java/util/Link
0140	65 64 48 61 73 68 4d 61 70 0c 00 1d 00 08 01 00 04 72 6f 6f 74 09 00 01 00 1f 0c 00 07 00 08 09	edHashMap........root...........
0160	00 1a 00 21 0c 00 22 00 0b 01 00 08 6d 6f 64 43 6f 75 6e 74 09 00 01 00 24 0c 00 0a 00 0b 01 00	...!..".....modCount....$.......
0180	0f 4c 69 6e 65 4e 75 6d 62 65 72 54 61 62 6c 65 01 00 12 4c 6f 63 61 6c 56 61 72 69 61 62 6c 65	.LineNumberTable...LocalVariable
01a0	54 61 62 6c 65 01 00 04 74 68 69 73 01 00 1b 4c 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b 65 64	Table...this...Ljava/util/Linked
01c0	48 61 73 68 4d 61 70 24 31 3b 01 00 07 68 61 73 4e 65 78 74 01 00 03 28 29 5a 01 00 04 6e 65 78	HashMap$1;...hasNext...()Z...nex
01e0	74 01 00 14 28 29 4c 6a 61 76 61 2f 6c 61 6e 67 2f 4f 62 6a 65 63 74 3b 07 00 2e 01 00 29 6a 61	t...()Ljava/lang/Object;.....)ja
0200	76 61 2f 75 74 69 6c 2f 43 6f 6e 63 75 72 72 65 6e 74 4d 6f 64 69 66 69 63 61 74 69 6f 6e 45 78	va/util/ConcurrentModificationEx
0220	63 65 70 74 69 6f 6e 0a 00 2d 00 17 07 00 31 01 00 20 6a 61 76 61 2f 75 74 69 6c 2f 4e 6f 53 75	ception..-....1...java/util/NoSu
0240	63 68 45 6c 65 6d 65 6e 74 45 78 63 65 70 74 69 6f 6e 0a 00 30 00 17 09 00 01 00 34 0c 00 09 00	chElementException..0......4....
0260	08 09 00 36 00 38 07 00 37 01 00 27 6a 61 76 61 2f 75 74 69 6c 2f 4c 69 6e 6b 65 64 48 61 73 68	...6.8..7..'java/util/LinkedHash
0280	4d 61 70 24 4c 69 6e 6b 65 64 48 61 73 68 45 6e 74 72 79 0c 00 39 00 08 01 00 04 73 75 63 63 09	Map$LinkedHashEntry..9.....succ.
02a0	00 36 00 3b 0c 00 3c 00 3d 01 00 05 76 61 6c 75 65 01 00 12 4c 6a 61 76 61 2f 6c 61 6e 67 2f 4f	.6.;..<.=...value...Ljava/lang/O
02c0	62 6a 65 63 74 3b 09 00 36 00 3f 0c 00 40 00 3d 01 00 03 6b 65 79 01 00 06 72 65 6d 6f 76 65 07	bject;..6.?..@.=...key...remove.
02e0	00 43 01 00 1f 6a 61 76 61 2f 6c 61 6e 67 2f 49 6c 6c 65 67 61 6c 53 74 61 74 65 45 78 63 65 70	.C...java/lang/IllegalStateExcep
0300	74 69 6f 6e 0a 00 42 00 17 0a 00 1a 00 46 0c 00 41 00 47 01 00 26 28 4c 6a 61 76 61 2f 6c 61 6e	tion..B......F..A.G..&(Ljava/lan
0320	67 2f 4f 62 6a 65 63 74 3b 29 4c 6a 61 76 61 2f 6c 61 6e 67 2f 4f 62 6a 65 63 74 3b 01 00 0a 53	g/Object;)Ljava/lang/Object;...S
0340	6f 75 72 63 65 46 69 6c 65 01 00 12 4c 69 6e 6b 65 64 48 61 73 68 4d 61 70 2e 6a 61 76 61 01 00	ourceFile...LinkedHashMap.java..
0360	0c 49 6e 6e 65 72 43 6c 61 73 73 65 73 01 00 0f 45 6e 63 6c 6f 73 69 6e 67 4d 65 74 68 6f 64 0c	.InnerClasses...EnclosingMethod.
0380	00 4d 00 4e 01 00 08 69 74 65 72 61 74 6f 72 01 00 17 28 49 29 4c 6a 61 76 61 2f 75 74 69 6c 2f	.M.N...iterator...(I)Ljava/util/
03a0	49 74 65 72 61 74 6f 72 3b 00 30 00 01 00 03 00 01 00 05 00 05 00 00 00 07 00 08 00 00 00 00 00	Iterator;.0.....................
03c0	09 00 08 00 00 00 00 00 0a 00 0b 00 00 10 10 00 0c 00 0d 00 00 10 12 00 0e 00 0b 00 00 00 04 00	................................
03e0	00 00 0f 00 10 00 01 00 11 00 00 00 55 00 02 00 03 00 00 00 1f 2a 2b b5 00 12 2a 1c b5 00 14 2a	............U........+.......*
0400	b7 00 16 2a 2b b4 00 19 b5 00 1e 2a 2b b4 00 20 b5 00 23 b1 00 00 00 02 00 25 00 00 00 12 00 04	...+......+.....#......%......
0420	00 00 00 01 00 0a 01 ba 00 0e 01 bd 00 16 01 c3 00 26 00 00 00 0c 00 01 00 00 00 1f 00 27 00 28	.................&...........'.(
0440	00 00 00 01 00 29 00 2a 00 01 00 11 00 00 00 35 00 01 00 01 00 00 00 0b 2a b4 00 1e c6 00 05 04	.....)........5...............
0460	ac 03 ac 00 00 00 02 00 25 00 00 00 06 00 01 00 00 01 cc 00 26 00 00 00 0c 00 01 00 00 00 0b 00	........%...........&...........
0480	27 00 28 00 00 00 01 00 2b 00 2c 00 01 00 11 00 00 00 a2 00 02 00 01 00 00 00 60 2a b4 00 23 2a	'.(.....+.,...............`..#
04a0	b4 00 12 b4 00 20 9f 00 0b bb 00 2d 59 b7 00 2f bf 2a b4 00 1e c7 00 0b bb 00 30 59 b7 00 32 bf	...........-Y../.*........0Y..2.
04c0	2a 2a b4 00 1e b5 00 33 2a 2a b4 00 1e b4 00 35 b5 00 1e 2a b4 00 14 04 a0 00 0d 2a b4 00 33 b4	.....3.....5............3.
04e0	00 3a a7 00 18 2a b4 00 14 9a 00 0d 2a b4 00 33 b4 00 3e a7 00 07 2a b4 00 33 b0 00 00 00 02 00	.:...........3..>...*..3......
0500	25 00 00 00 1e 00 07 00 00 01 d8 00 0e 01 d9 00 16 01 da 00 1d 01 db 00 25 01 dc 00 2d 01 dd 00	%.......................%...-...
0520	38 01 de 00 26 00 00 00 0c 00 01 00 00 00 60 00 27 00 28 00 00 00 01 00 41 00 18 00 01 00 11 00	8...&.........`.'.(.....A.......
0540	00 00 8a 00 03 00 01 00 00 00 44 2a b4 00 23 2a b4 00 12 b4 00 20 9f 00 0b bb 00 2d 59 b7 00 2f	..........D..#...........-Y../
0560	bf 2a b4 00 33 c7 00 0b bb 00 42 59 b7 00 44 bf 2a b4 00 12 2a b4 00 33 b4 00 3e b6 00 45 57 2a	...3.....BY..D......3..>..EW
0580	01 b5 00 33 2a 59 b4 00 23 04 60 b5 00 23 b1 00 00 00 02 00 25 00 00 00 22 00 08 00 00 01 ea 00	...3*Y..#.`..#......%...".......
05a0	0e 01 eb 00 16 01 ec 00 1d 01 ed 00 25 01 ee 00 34 01 ef 00 39 01 f0 00 43 01 f1 00 26 00 00 00	............%...4...9...C...&...
05c0	0c 00 01 00 00 00 44 00 27 00 28 00 00 00 03 00 48 00 00 00 02 00 49 00 4a 00 00 00 0a 00 01 00	......D.'.(.....H.....I.J.......
05e0	01 00 00 00 00 00 12 00 4b 00 00 00 04 00 1a 00 4c	........K.......L