/* Simple bitmaps.
- Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2002, 2003, 2004, 2006, 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
if there is a cached value. */
void
-sbitmap_verify_popcount (sbitmap a)
+sbitmap_verify_popcount (const_sbitmap a)
{
unsigned ix;
unsigned int lastword;
sbitmap
sbitmap_alloc_with_popcount (unsigned int n_elms)
{
- sbitmap bmap;
-
- bmap = sbitmap_alloc (n_elms);
+ sbitmap const bmap = sbitmap_alloc (n_elms);
bmap->popcount = xmalloc (bmap->size * sizeof (unsigned char));
return bmap;
}
/* Copy sbitmap SRC to DST. */
void
-sbitmap_copy (sbitmap dst, sbitmap src)
+sbitmap_copy (sbitmap dst, const_sbitmap src)
{
memcpy (dst->elms, src->elms, sizeof (SBITMAP_ELT_TYPE) * dst->size);
if (dst->popcount)
/* Copy the first N elements of sbitmap SRC to DST. */
void
-sbitmap_copy_n (sbitmap dst, sbitmap src, unsigned int n)
+sbitmap_copy_n (sbitmap dst, const_sbitmap src, unsigned int n)
{
memcpy (dst->elms, src->elms, sizeof (SBITMAP_ELT_TYPE) * n);
if (dst->popcount)
/* Determine if a == b. */
int
-sbitmap_equal (sbitmap a, sbitmap b)
+sbitmap_equal (const_sbitmap a, const_sbitmap b)
{
return !memcmp (a->elms, b->elms, sizeof (SBITMAP_ELT_TYPE) * a->size);
}
+/* Return true if the bitmap is empty. */
+
+bool
+sbitmap_empty_p (const_sbitmap bmap)
+{
+ unsigned int i;
+ for (i=0; i<bmap->size; i++)
+ if (bmap->elms[i])
+ return false;
+
+ return true;
+}
+
/* Zero all elements in a bitmap. */
void
Returns true if any change is made. */
bool
-sbitmap_union_of_diff_cg (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
+sbitmap_union_of_diff_cg (sbitmap dst, const_sbitmap a, const_sbitmap b, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr cp = c->elms;
SBITMAP_ELT_TYPE changed = 0;
gcc_assert (!dst->popcount);
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ | (*bp++ & ~*cp++);
+ const SBITMAP_ELT_TYPE tmp = *ap++ | (*bp++ & ~*cp++);
changed |= *dstp ^ tmp;
*dstp++ = tmp;
}
}
void
-sbitmap_union_of_diff (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
+sbitmap_union_of_diff (sbitmap dst, const_sbitmap a, const_sbitmap b, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr cp = c->elms;
gcc_assert (!dst->popcount && !a->popcount
&& !b->popcount && !c->popcount);
/* Set bitmap DST to the bitwise negation of the bitmap SRC. */
void
-sbitmap_not (sbitmap dst, sbitmap src)
+sbitmap_not (sbitmap dst, const_sbitmap src)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr srcp = src->elms;
+ const_sbitmap_ptr srcp = src->elms;
unsigned int last_bit;
gcc_assert (!dst->popcount);
in A and the bits in B. i.e. dst = a & (~b). */
void
-sbitmap_difference (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_difference (sbitmap dst, const_sbitmap a, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
gcc_assert (!dst->popcount);
Return false otherwise. */
bool
-sbitmap_any_common_bits (sbitmap a, sbitmap b)
+sbitmap_any_common_bits (const_sbitmap a, const_sbitmap b)
{
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
unsigned int i, n;
n = MIN (a->size, b->size);
Return nonzero if any change is made. */
bool
-sbitmap_a_and_b_cg (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_a_and_b_cg (sbitmap dst, const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
SBITMAP_ELT_TYPE changed = 0;
gcc_assert (!dst->popcount);
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ & *bp++;
+ const SBITMAP_ELT_TYPE tmp = *ap++ & *bp++;
changed |= *dstp ^ tmp;
*dstp++ = tmp;
}
}
void
-sbitmap_a_and_b (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_a_and_b (sbitmap dst, const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
bool has_popcount = dst->popcount != NULL;
unsigned char *popcountp = dst->popcount;
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ & *bp++;
+ const SBITMAP_ELT_TYPE tmp = *ap++ & *bp++;
if (has_popcount)
{
bool wordchanged = (*dstp ^ tmp) != 0;
Return nonzero if any change is made. */
bool
-sbitmap_a_xor_b_cg (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_a_xor_b_cg (sbitmap dst, const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
SBITMAP_ELT_TYPE changed = 0;
gcc_assert (!dst->popcount);
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
+ const SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
changed |= *dstp ^ tmp;
*dstp++ = tmp;
}
}
void
-sbitmap_a_xor_b (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_a_xor_b (sbitmap dst, const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
bool has_popcount = dst->popcount != NULL;
unsigned char *popcountp = dst->popcount;
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
+ const SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
if (has_popcount)
{
bool wordchanged = (*dstp ^ tmp) != 0;
Return nonzero if any change is made. */
bool
-sbitmap_a_or_b_cg (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_a_or_b_cg (sbitmap dst, const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
SBITMAP_ELT_TYPE changed = 0;
gcc_assert (!dst->popcount);
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ | *bp++;
+ const SBITMAP_ELT_TYPE tmp = *ap++ | *bp++;
changed |= *dstp ^ tmp;
*dstp++ = tmp;
}
}
void
-sbitmap_a_or_b (sbitmap dst, sbitmap a, sbitmap b)
+sbitmap_a_or_b (sbitmap dst, const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = dst->size;
sbitmap_ptr dstp = dst->elms;
- sbitmap_ptr ap = a->elms;
- sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
bool has_popcount = dst->popcount != NULL;
unsigned char *popcountp = dst->popcount;
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ | *bp++;
+ const SBITMAP_ELT_TYPE tmp = *ap++ | *bp++;
if (has_popcount)
{
bool wordchanged = (*dstp ^ tmp) != 0;
/* Return nonzero if A is a subset of B. */
bool
-sbitmap_a_subset_b_p (sbitmap a, sbitmap b)
+sbitmap_a_subset_b_p (const_sbitmap a, const_sbitmap b)
{
unsigned int i, n = a->size;
- sbitmap_ptr ap, bp;
+ const_sbitmap_ptr ap, bp;
for (ap = a->elms, bp = b->elms, i = 0; i < n; i++, ap++, bp++)
if ((*ap | *bp) != *bp)
Return nonzero if any change is made. */
bool
-sbitmap_a_or_b_and_c_cg (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
+sbitmap_a_or_b_and_c_cg (sbitmap dst, const_sbitmap a, const_sbitmap b, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr cp = c->elms;
SBITMAP_ELT_TYPE changed = 0;
gcc_assert (!dst->popcount);
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ | (*bp++ & *cp++);
+ const SBITMAP_ELT_TYPE tmp = *ap++ | (*bp++ & *cp++);
changed |= *dstp ^ tmp;
*dstp++ = tmp;
}
}
void
-sbitmap_a_or_b_and_c (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
+sbitmap_a_or_b_and_c (sbitmap dst, const_sbitmap a, const_sbitmap b, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr cp = c->elms;
gcc_assert (!dst->popcount);
Return nonzero if any change is made. */
bool
-sbitmap_a_and_b_or_c_cg (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
+sbitmap_a_and_b_or_c_cg (sbitmap dst, const_sbitmap a, const_sbitmap b, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr cp = c->elms;
SBITMAP_ELT_TYPE changed = 0;
gcc_assert (!dst->popcount);
for (i = 0; i < n; i++)
{
- SBITMAP_ELT_TYPE tmp = *ap++ & (*bp++ | *cp++);
+ const SBITMAP_ELT_TYPE tmp = *ap++ & (*bp++ | *cp++);
changed |= *dstp ^ tmp;
*dstp++ = tmp;
}
}
void
-sbitmap_a_and_b_or_c (sbitmap dst, sbitmap a, sbitmap b, sbitmap c)
+sbitmap_a_and_b_or_c (sbitmap dst, const_sbitmap a, const_sbitmap b, const_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;
+ const_sbitmap_ptr ap = a->elms;
+ const_sbitmap_ptr bp = b->elms;
+ const_sbitmap_ptr cp = c->elms;
for (i = 0; i < n; i++)
*dstp++ = *ap++ & (*bp++ | *cp++);
/* Return number of first bit set in the bitmap, -1 if none. */
int
-sbitmap_first_set_bit (sbitmap bmap)
+sbitmap_first_set_bit (const_sbitmap bmap)
{
unsigned int n = 0;
sbitmap_iterator sbi;
/* Return number of last bit set in the bitmap, -1 if none. */
int
-sbitmap_last_set_bit (sbitmap bmap)
+sbitmap_last_set_bit (const_sbitmap bmap)
{
int i;
- SBITMAP_ELT_TYPE *ptr = bmap->elms;
+ const SBITMAP_ELT_TYPE *const ptr = bmap->elms;
for (i = bmap->size - 1; i >= 0; i--)
{
- SBITMAP_ELT_TYPE word = ptr[i];
+ const SBITMAP_ELT_TYPE word = ptr[i];
if (word != 0)
{
}
void
-dump_sbitmap (FILE *file, sbitmap bmap)
+dump_sbitmap (FILE *file, const_sbitmap bmap)
{
unsigned int i, n, j;
unsigned int set_size = bmap->size;
}
void
-dump_sbitmap_file (FILE *file, sbitmap bmap)
+dump_sbitmap_file (FILE *file, const_sbitmap bmap)
{
unsigned int i, pos;
}
void
-debug_sbitmap (sbitmap bmap)
+debug_sbitmap (const_sbitmap bmap)
{
dump_sbitmap_file (stderr, bmap);
}
#if GCC_VERSION < 3400
/* Table of number of set bits in a character, indexed by value of char. */
-static unsigned char popcount_table[] =
+static const unsigned char popcount_table[] =
{
0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
/* Count the number of bits in SBITMAP a, up to bit MAXBIT. */
unsigned long
-sbitmap_popcount (sbitmap a, unsigned long maxbit)
+sbitmap_popcount (const_sbitmap a, unsigned long maxbit)
{
unsigned long count = 0;
unsigned ix;
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