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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [sbitmap.c] - Rev 38

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/* Simple bitmaps.
   Copyright (C) 1999, 2000, 2002, 2003, 2004, 2007
   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 "flags.h"
#include "hard-reg-set.h"
#include "obstack.h"
#include "basic-block.h"
 
/* Bitmap manipulation routines.  */
 
/* Allocate a simple bitmap of N_ELMS bits.  */
 
sbitmap
sbitmap_alloc (unsigned int n_elms)
{
  unsigned int bytes, size, amt;
  sbitmap bmap;
 
  size = SBITMAP_SET_SIZE (n_elms);
  bytes = size * sizeof (SBITMAP_ELT_TYPE);
  amt = (sizeof (struct simple_bitmap_def)
	 + bytes - sizeof (SBITMAP_ELT_TYPE));
  bmap = xmalloc (amt);
  bmap->n_bits = n_elms;
  bmap->size = size;
  bmap->bytes = bytes;
  return bmap;
}
 
/* Resize a simple bitmap BMAP to N_ELMS bits.  If increasing the
   size of BMAP, clear the new bits to zero if the DEF argument
   is zero, and set them to one otherwise.  */
 
sbitmap
sbitmap_resize (sbitmap bmap, unsigned int n_elms, int def)
{
  unsigned int bytes, size, amt;
  unsigned int last_bit;
 
  size = SBITMAP_SET_SIZE (n_elms);
  bytes = size * sizeof (SBITMAP_ELT_TYPE);
  if (bytes > bmap->bytes)
    {
      amt = (sizeof (struct simple_bitmap_def)
	    + bytes - sizeof (SBITMAP_ELT_TYPE));
      bmap = xrealloc (bmap, amt);
    }
 
  if (n_elms > bmap->n_bits)
    {
      if (def)
	{
	  memset (bmap->elms + bmap->size, -1, bytes - bmap->bytes);
 
	  /* Set the new bits if the original last element.  */
	  last_bit = bmap->n_bits % SBITMAP_ELT_BITS;
	  if (last_bit)
	    bmap->elms[bmap->size - 1]
	      |= ~((SBITMAP_ELT_TYPE)-1 >> (SBITMAP_ELT_BITS - last_bit));
 
	  /* Clear the unused bit in the new last element.  */
	  last_bit = n_elms % SBITMAP_ELT_BITS;
	  if (last_bit)
	    bmap->elms[size - 1]
	      &= (SBITMAP_ELT_TYPE)-1 >> (SBITMAP_ELT_BITS - last_bit);
	}
      else
	memset (bmap->elms + bmap->size, 0, bytes - bmap->bytes);
    }
  else if (n_elms < bmap->n_bits)
    {
      /* Clear the surplus bits in the last word.  */
      last_bit = n_elms % SBITMAP_ELT_BITS;
      if (last_bit)
	bmap->elms[size - 1]
	  &= (SBITMAP_ELT_TYPE)-1 >> (SBITMAP_ELT_BITS - last_bit);
    }
 
  bmap->n_bits = n_elms;
  bmap->size = size;
  bmap->bytes = bytes;
  return bmap;
}
 
/* Re-allocate a simple bitmap of N_ELMS bits. New storage is uninitialized.  */
 
sbitmap
sbitmap_realloc (sbitmap src, unsigned int n_elms)
{
  unsigned int bytes, size, amt;
  sbitmap bmap;
 
  size = SBITMAP_SET_SIZE (n_elms);
  bytes = size * sizeof (SBITMAP_ELT_TYPE);
  amt = (sizeof (struct simple_bitmap_def)
	 + bytes - sizeof (SBITMAP_ELT_TYPE));
 
  if (src->bytes  >= bytes)
    {
      src->n_bits = n_elms;
      return src;
    }
 
  bmap = (sbitmap) xrealloc (src, amt);
  bmap->n_bits = n_elms;
  bmap->size = size;
  bmap->bytes = bytes;
  return bmap;
}
 
/* Allocate a vector of N_VECS bitmaps of N_ELMS bits.  */
 
sbitmap *
sbitmap_vector_alloc (unsigned int n_vecs, unsigned int n_elms)
{
  unsigned int i, bytes, offset, elm_bytes, size, amt, vector_bytes;
  sbitmap *bitmap_vector;
 
  size = SBITMAP_SET_SIZE (n_elms);
  bytes = size * sizeof (SBITMAP_ELT_TYPE);
  elm_bytes = (sizeof (struct simple_bitmap_def)
	       + bytes - sizeof (SBITMAP_ELT_TYPE));
  vector_bytes = n_vecs * sizeof (sbitmap *);
 
  /* Round up `vector_bytes' to account for the alignment requirements
     of an sbitmap.  One could allocate the vector-table and set of sbitmaps
     separately, but that requires maintaining two pointers or creating
     a cover struct to hold both pointers (so our result is still just
     one pointer).  Neither is a bad idea, but this is simpler for now.  */
  {
    /* Based on DEFAULT_ALIGNMENT computation in obstack.c.  */
    struct { char x; SBITMAP_ELT_TYPE y; } align;
    int alignment = (char *) & align.y - & align.x;
    vector_bytes = (vector_bytes + alignment - 1) & ~ (alignment - 1);
  }
 
  amt = vector_bytes + (n_vecs * elm_bytes);
  bitmap_vector = xmalloc (amt);
 
  for (i = 0, offset = vector_bytes; i < n_vecs; i++, offset += elm_bytes)
    {
      sbitmap b = (sbitmap) ((char *) bitmap_vector + offset);
 
      bitmap_vector[i] = b;
      b->n_bits = n_elms;
      b->size = size;
      b->bytes = bytes;
    }
 
  return bitmap_vector;
}
 
/* Copy sbitmap SRC to DST.  */
 
void
sbitmap_copy (sbitmap dst, sbitmap src)
{
  memcpy (dst->elms, src->elms, sizeof (SBITMAP_ELT_TYPE) * dst->size);
}
 
/* Determine if a == b.  */
int
sbitmap_equal (sbitmap a, sbitmap b)
{
  return !memcmp (a->elms, b->elms, sizeof (SBITMAP_ELT_TYPE) * a->size);
}
 
/* Zero all elements in a bitmap.  */
 
void
sbitmap_zero (sbitmap bmap)
{
  memset (bmap->elms, 0, bmap->bytes);
}
 
/* Set all elements in a bitmap to ones.  */
 
void
sbitmap_ones (sbitmap bmap)
{
  unsigned int last_bit;
 
  memset (bmap->elms, -1, bmap->bytes);
 
  last_bit = bmap->n_bits % SBITMAP_ELT_BITS;
  if (last_bit)
    bmap->elms[bmap->size - 1]
      = (SBITMAP_ELT_TYPE)-1 >> (SBITMAP_ELT_BITS - last_bit);
}
 
/* Zero a vector of N_VECS bitmaps.  */
 
void
sbitmap_vector_zero (sbitmap *bmap, unsigned int n_vecs)
{
  unsigned int i;
 
  for (i = 0; i < n_vecs; i++)
    sbitmap_zero (bmap[i]);
}
 
/* Set a vector of N_VECS bitmaps to ones.  */
 
void
sbitmap_vector_ones (sbitmap *bmap, unsigned int n_vecs)
{
  unsigned int i;
 
  for (i = 0; i < n_vecs; i++)
    sbitmap_ones (bmap[i]);
}
 
/* Set DST to be A union (B - C).
   DST = A | (B & ~C).
   Returns true if any change is made.  */
 
bool
sbitmap_union_of_diff_cg (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  sbitmap_ptr cp = c->elms;
  SBITMAP_ELT_TYPE changed = 0;
 
  for (i = 0; i < n; i++)
    {
      SBITMAP_ELT_TYPE tmp = *ap++ | (*bp++ & ~*cp++);
      changed |= *dstp ^ tmp;
      *dstp++ = tmp;
    }
 
  return changed != 0;
}
 
void
sbitmap_union_of_diff (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  sbitmap_ptr cp = c->elms;
 
  for (i = 0; i < n; i++)
    *dstp++ = *ap++ | (*bp++ & ~*cp++);
}
 
/* Set bitmap DST to the bitwise negation of the bitmap SRC.  */
 
void
sbitmap_not (sbitmap dst, sbitmap src)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr srcp = src->elms;
  unsigned int last_bit;
 
  for (i = 0; i < n; i++)
    *dstp++ = ~*srcp++;
 
  /* Zero all bits past n_bits, by ANDing dst with sbitmap_ones.  */
  last_bit = src->n_bits % SBITMAP_ELT_BITS;
  if (last_bit)
    dst->elms[n-1] = dst->elms[n-1]
      & ((SBITMAP_ELT_TYPE)-1 >> (SBITMAP_ELT_BITS - last_bit));
}
 
/* Set the bits in DST to be the difference between the bits
   in A and the bits in B. i.e. dst = a & (~b).  */
 
void
sbitmap_difference (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, dst_size = dst->size;
  unsigned int min_size = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
 
  /* A should be at least as large as DEST, to have a defined source.  */
  gcc_assert (a->size >= dst_size);
  /* If minuend is smaller, we simply pretend it to be zero bits, i.e.
     only copy the subtrahend into dest.  */
  if (b->size < min_size)
    min_size = b->size;
  for (i = 0; i < min_size; i++)
    *dstp++ = *ap++ & (~*bp++);
  /* Now fill the rest of dest from A, if B was too short.
     This makes sense only when destination and A differ.  */
  if (dst != a && i != dst_size)
    for (; i < dst_size; i++)
      *dstp++ = *ap++;
}
 
/* Return true if there are any bits set in A are also set in B.
   Return false otherwise.  */
 
bool
sbitmap_any_common_bits (sbitmap a, sbitmap b)
{
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  unsigned int i, n;
 
  n = MIN (a->size, b->size);
  for (i = 0; i < n; i++)
    if ((*ap++ & *bp++) != 0)
      return true;
 
  return false;
}
 
/* Set DST to be (A and B).
   Return nonzero if any change is made.  */
 
bool
sbitmap_a_and_b_cg (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  SBITMAP_ELT_TYPE changed = 0;
 
  for (i = 0; i < n; i++)
    {
      SBITMAP_ELT_TYPE tmp = *ap++ & *bp++;
      changed |= *dstp ^ tmp;
      *dstp++ = tmp;
    }
 
  return changed != 0;
}
 
void
sbitmap_a_and_b (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
 
  for (i = 0; i < n; i++)
    *dstp++ = *ap++ & *bp++;
}
 
/* Set DST to be (A xor B)).
   Return nonzero if any change is made.  */
 
bool
sbitmap_a_xor_b_cg (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  SBITMAP_ELT_TYPE changed = 0;
 
  for (i = 0; i < n; i++)
    {
      SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
      changed |= *dstp ^ tmp;
      *dstp++ = tmp;
    }
 
  return changed != 0;
}
 
void
sbitmap_a_xor_b (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
 
  for (i = 0; i < n; i++)
    *dstp++ = *ap++ ^ *bp++;
}
 
/* Set DST to be (A or B)).
   Return nonzero if any change is made.  */
 
bool
sbitmap_a_or_b_cg (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  SBITMAP_ELT_TYPE changed = 0;
 
  for (i = 0; i < n; i++)
    {
      SBITMAP_ELT_TYPE tmp = *ap++ | *bp++;
      changed |= *dstp ^ tmp;
      *dstp++ = tmp;
    }
 
  return changed != 0;
}
 
void
sbitmap_a_or_b (sbitmap dst, sbitmap a, sbitmap b)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
 
  for (i = 0; i < n; i++)
    *dstp++ = *ap++ | *bp++;
}
 
/* Return nonzero if A is a subset of B.  */
 
bool
sbitmap_a_subset_b_p (sbitmap a, sbitmap b)
{
  unsigned int i, n = a->size;
  sbitmap_ptr ap, bp;
 
  for (ap = a->elms, bp = b->elms, i = 0; i < n; i++, ap++, bp++)
    if ((*ap | *bp) != *bp)
      return false;
 
  return true;
}
 
/* Set DST to be (A or (B and C)).
   Return nonzero if any change is made.  */
 
bool
sbitmap_a_or_b_and_c_cg (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  sbitmap_ptr cp = c->elms;
  SBITMAP_ELT_TYPE changed = 0;
 
  for (i = 0; i < n; i++)
    {
      SBITMAP_ELT_TYPE tmp = *ap++ | (*bp++ & *cp++);
      changed |= *dstp ^ tmp;
      *dstp++ = tmp;
    }
 
  return changed != 0;
}
 
void
sbitmap_a_or_b_and_c (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  sbitmap_ptr cp = c->elms;
 
  for (i = 0; i < n; i++)
    *dstp++ = *ap++ | (*bp++ & *cp++);
}
 
/* Set DST to be (A and (B or C)).
   Return nonzero if any change is made.  */
 
bool
sbitmap_a_and_b_or_c_cg (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  sbitmap_ptr cp = c->elms;
  SBITMAP_ELT_TYPE changed = 0;
 
  for (i = 0; i < n; i++)
    {
      SBITMAP_ELT_TYPE tmp = *ap++ & (*bp++ | *cp++);
      changed |= *dstp ^ tmp;
      *dstp++ = tmp;
    }
 
  return changed != 0;
}
 
void
sbitmap_a_and_b_or_c (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
{
  unsigned int i, n = dst->size;
  sbitmap_ptr dstp = dst->elms;
  sbitmap_ptr ap = a->elms;
  sbitmap_ptr bp = b->elms;
  sbitmap_ptr cp = c->elms;
 
  for (i = 0; i < n; i++)
    *dstp++ = *ap++ & (*bp++ | *cp++);
}
 
#ifdef IN_GCC
/* Set the bitmap DST to the intersection of SRC of successors of
   block number BB, using the new flow graph structures.  */
 
void
sbitmap_intersection_of_succs (sbitmap dst, sbitmap *src, int bb)
{
  basic_block b = BASIC_BLOCK (bb);
  unsigned int set_size = dst->size;
  edge e;
  unsigned ix;
 
  for (e = NULL, ix = 0; ix < EDGE_COUNT (b->succs); ix++)
    {
      e = EDGE_SUCC (b, ix);
      if (e->dest == EXIT_BLOCK_PTR)
	continue;
 
      sbitmap_copy (dst, src[e->dest->index]);
      break;
    }
 
  if (e == 0)
    sbitmap_ones (dst);
  else
    for (++ix; ix < EDGE_COUNT (b->succs); ix++)
      {
	unsigned int i;
	sbitmap_ptr p, r;
 
	e = EDGE_SUCC (b, ix);
	if (e->dest == EXIT_BLOCK_PTR)
	  continue;
 
	p = src[e->dest->index]->elms;
	r = dst->elms;
	for (i = 0; i < set_size; i++)
	  *r++ &= *p++;
      }
}
 
/* Set the bitmap DST to the intersection of SRC of predecessors of
   block number BB, using the new flow graph structures.  */
 
void
sbitmap_intersection_of_preds (sbitmap dst, sbitmap *src, int bb)
{
  basic_block b = BASIC_BLOCK (bb);
  unsigned int set_size = dst->size;
  edge e;
  unsigned ix;
 
  for (e = NULL, ix = 0; ix < EDGE_COUNT (b->preds); ix++)
    {
      e = EDGE_PRED (b, ix);
      if (e->src == ENTRY_BLOCK_PTR)
	continue;
 
      sbitmap_copy (dst, src[e->src->index]);
      break;
    }
 
  if (e == 0)
    sbitmap_ones (dst);
  else
    for (++ix; ix < EDGE_COUNT (b->preds); ix++)
      {
	unsigned int i;
	sbitmap_ptr p, r;
 
	e = EDGE_PRED (b, ix);
	if (e->src == ENTRY_BLOCK_PTR)
	  continue;
 
	p = src[e->src->index]->elms;
	r = dst->elms;
	for (i = 0; i < set_size; i++)
	  *r++ &= *p++;
      }
}
 
/* Set the bitmap DST to the union of SRC of successors of
   block number BB, using the new flow graph structures.  */
 
void
sbitmap_union_of_succs (sbitmap dst, sbitmap *src, int bb)
{
  basic_block b = BASIC_BLOCK (bb);
  unsigned int set_size = dst->size;
  edge e;
  unsigned ix;
 
  for (ix = 0; ix < EDGE_COUNT (b->succs); ix++)
    {
      e = EDGE_SUCC (b, ix);
      if (e->dest == EXIT_BLOCK_PTR)
	continue;
 
      sbitmap_copy (dst, src[e->dest->index]);
      break;
    }
 
  if (ix == EDGE_COUNT (b->succs))
    sbitmap_zero (dst);
  else
    for (ix++; ix < EDGE_COUNT (b->succs); ix++)
      {
	unsigned int i;
	sbitmap_ptr p, r;
 
	e = EDGE_SUCC (b, ix);
	if (e->dest == EXIT_BLOCK_PTR)
	  continue;
 
	p = src[e->dest->index]->elms;
	r = dst->elms;
	for (i = 0; i < set_size; i++)
	  *r++ |= *p++;
      }
}
 
/* Set the bitmap DST to the union of SRC of predecessors of
   block number BB, using the new flow graph structures.  */
 
void
sbitmap_union_of_preds (sbitmap dst, sbitmap *src, int bb)
{
  basic_block b = BASIC_BLOCK (bb);
  unsigned int set_size = dst->size;
  edge e;
  unsigned ix;
 
  for (ix = 0; ix < EDGE_COUNT (b->preds); ix++)
    {
      e = EDGE_PRED (b, ix);
      if (e->src== ENTRY_BLOCK_PTR)
	continue;
 
      sbitmap_copy (dst, src[e->src->index]);
      break;
    }
 
  if (ix == EDGE_COUNT (b->preds))
    sbitmap_zero (dst);
  else
    for (ix++; ix < EDGE_COUNT (b->preds); ix++)
      {
	unsigned int i;
	sbitmap_ptr p, r;
 
	e = EDGE_PRED (b, ix);
	if (e->src == ENTRY_BLOCK_PTR)
	  continue;
 
	p = src[e->src->index]->elms;
	r = dst->elms;
	for (i = 0; i < set_size; i++)
	  *r++ |= *p++;
      }
}
#endif
 
/* Return number of first bit set in the bitmap, -1 if none.  */
 
int
sbitmap_first_set_bit (sbitmap bmap)
{
  unsigned int n = 0;
  sbitmap_iterator sbi;
 
  EXECUTE_IF_SET_IN_SBITMAP (bmap, 0, n, sbi)
    return n;
  return -1;
}
 
/* Return number of last bit set in the bitmap, -1 if none.  */
 
int
sbitmap_last_set_bit (sbitmap bmap)
{
  int i;
  SBITMAP_ELT_TYPE *ptr = bmap->elms;
 
  for (i = bmap->size - 1; i >= 0; i--)
    {
      SBITMAP_ELT_TYPE word = ptr[i];
 
      if (word != 0)
	{
	  unsigned int index = (i + 1) * SBITMAP_ELT_BITS - 1;
	  SBITMAP_ELT_TYPE mask
	    = (SBITMAP_ELT_TYPE) 1 << (SBITMAP_ELT_BITS - 1);
 
	  while (1)
	    {
	      if ((word & mask) != 0)
		return index;
 
	      mask >>= 1;
	      index--;
	    }
	}
    }
 
  return -1;
}
 
void
dump_sbitmap (FILE *file, sbitmap bmap)
{
  unsigned int i, n, j;
  unsigned int set_size = bmap->size;
  unsigned int total_bits = bmap->n_bits;
 
  fprintf (file, "  ");
  for (i = n = 0; i < set_size && n < total_bits; i++)
    for (j = 0; j < SBITMAP_ELT_BITS && n < total_bits; j++, n++)
      {
	if (n != 0 && n % 10 == 0)
	  fprintf (file, " ");
 
	fprintf (file, "%d",
		 (bmap->elms[i] & ((SBITMAP_ELT_TYPE) 1 << j)) != 0);
      }
 
  fprintf (file, "\n");
}
 
void
dump_sbitmap_file (FILE *file, sbitmap bmap)
{
  unsigned int i, pos;
 
  fprintf (file, "n_bits = %d, set = {", bmap->n_bits);
 
  for (pos = 30, i = 0; i < bmap->n_bits; i++)
    if (TEST_BIT (bmap, i))
      {
	if (pos > 70)
	  {
	    fprintf (file, "\n  ");
	    pos = 0;
	  }
 
	fprintf (file, "%d ", i);
	pos += 2 + (i >= 10) + (i >= 100) + (i >= 1000);
      }
 
  fprintf (file, "}\n");
}
 
void
debug_sbitmap (sbitmap bmap)
{
  dump_sbitmap_file (stderr, bmap);
}
 
void
dump_sbitmap_vector (FILE *file, const char *title, const char *subtitle,
		     sbitmap *bmaps, int n_maps)
{
  int bb;
 
  fprintf (file, "%s\n", title);
  for (bb = 0; bb < n_maps; bb++)
    {
      fprintf (file, "%s %d\n", subtitle, bb);
      dump_sbitmap (file, bmaps[bb]);
    }
 
  fprintf (file, "\n");
}
 

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