/* Functions to support general ended bitmaps.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+ 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/>. */
#ifndef GCC_BITMAP_H
#define GCC_BITMAP_H
#include "hashtab.h"
#include "statistics.h"
+#include "obstack.h"
/* Fundamental storage type for bitmap. */
extern void bitmap_clear (bitmap);
/* Copy a bitmap to another bitmap. */
-extern void bitmap_copy (bitmap, bitmap);
+extern void bitmap_copy (bitmap, const_bitmap);
/* True if two bitmaps are identical. */
-extern bool bitmap_equal_p (bitmap, bitmap);
+extern bool bitmap_equal_p (const_bitmap, const_bitmap);
/* True if the bitmaps intersect (their AND is non-empty). */
-extern bool bitmap_intersect_p (bitmap, bitmap);
+extern bool bitmap_intersect_p (const_bitmap, const_bitmap);
/* True if the complement of the second intersects the first (their
AND_COMPL is non-empty). */
-extern bool bitmap_intersect_compl_p (bitmap, bitmap);
+extern bool bitmap_intersect_compl_p (const_bitmap, const_bitmap);
/* True if MAP is an empty bitmap. */
#define bitmap_empty_p(MAP) (!(MAP)->first)
+/* True if the bitmap has only a single bit set. */
+extern bool bitmap_single_bit_set_p (const_bitmap);
+
/* Count the number of bits set in the bitmap. */
-extern unsigned long bitmap_count_bits (bitmap);
+extern unsigned long bitmap_count_bits (const_bitmap);
/* Boolean operations on bitmaps. The _into variants are two operand
versions that modify the first source operand. The other variants
are three operand versions that to not destroy the source bitmaps.
The operations supported are &, & ~, |, ^. */
-extern void bitmap_and (bitmap, bitmap, bitmap);
-extern void bitmap_and_into (bitmap, bitmap);
-extern void bitmap_and_compl (bitmap, bitmap, bitmap);
-extern bool bitmap_and_compl_into (bitmap, bitmap);
+extern void bitmap_and (bitmap, const_bitmap, const_bitmap);
+extern void bitmap_and_into (bitmap, const_bitmap);
+extern bool bitmap_and_compl (bitmap, const_bitmap, const_bitmap);
+extern bool bitmap_and_compl_into (bitmap, const_bitmap);
#define bitmap_compl_and(DST, A, B) bitmap_and_compl (DST, B, A)
-extern void bitmap_compl_and_into (bitmap, bitmap);
+extern void bitmap_compl_and_into (bitmap, const_bitmap);
extern void bitmap_clear_range (bitmap, unsigned int, unsigned int);
-extern bool bitmap_ior (bitmap, bitmap, bitmap);
-extern bool bitmap_ior_into (bitmap, bitmap);
-extern void bitmap_xor (bitmap, bitmap, bitmap);
-extern void bitmap_xor_into (bitmap, bitmap);
+extern void bitmap_set_range (bitmap, unsigned int, unsigned int);
+extern bool bitmap_ior (bitmap, const_bitmap, const_bitmap);
+extern bool bitmap_ior_into (bitmap, const_bitmap);
+extern void bitmap_xor (bitmap, const_bitmap, const_bitmap);
+extern void bitmap_xor_into (bitmap, const_bitmap);
/* DST = A | (B & ~C). Return true if DST changes. */
-extern bool bitmap_ior_and_compl (bitmap DST, bitmap A, bitmap B, bitmap C);
+extern bool bitmap_ior_and_compl (bitmap DST, const_bitmap A, const_bitmap B, const_bitmap C);
/* A |= (B & ~C). Return true if A changes. */
-extern bool bitmap_ior_and_compl_into (bitmap DST, bitmap B, bitmap C);
+extern bool bitmap_ior_and_compl_into (bitmap DST, const_bitmap B, const_bitmap C);
-/* Clear a single register in a register set. */
-extern void bitmap_clear_bit (bitmap, int);
+/* Clear a single bit in a bitmap. Return true if the bit changed. */
+extern bool bitmap_clear_bit (bitmap, int);
-/* Set a single register in a register set. */
-extern void bitmap_set_bit (bitmap, int);
+/* Set a single bit in a bitmap. Return true if the bit changed. */
+extern bool bitmap_set_bit (bitmap, int);
/* Return true if a register is set in a register set. */
extern int bitmap_bit_p (bitmap, int);
/* Debug functions to print a bitmap linked list. */
-extern void debug_bitmap (bitmap);
-extern void debug_bitmap_file (FILE *, bitmap);
+extern void debug_bitmap (const_bitmap);
+extern void debug_bitmap_file (FILE *, const_bitmap);
/* Print a bitmap. */
-extern void bitmap_print (FILE *, bitmap, const char *, const char *);
+extern void bitmap_print (FILE *, const_bitmap, const char *, const char *);
/* Initialize and release a bitmap obstack. */
extern void bitmap_obstack_initialize (bitmap_obstack *);
/* A few compatibility/functions macros for compatibility with sbitmaps */
#define dump_bitmap(file, bitmap) bitmap_print (file, bitmap, "", "\n")
#define bitmap_zero(a) bitmap_clear (a)
-extern unsigned bitmap_first_set_bit (bitmap);
+extern unsigned bitmap_first_set_bit (const_bitmap);
/* Compute bitmap hash (for purposes of hashing etc.) */
-extern hashval_t bitmap_hash(bitmap);
+extern hashval_t bitmap_hash(const_bitmap);
/* Allocate a bitmap from a bit obstack. */
#define BITMAP_ALLOC(OBSTACK) bitmap_obstack_alloc (OBSTACK)
iterate from. */
static inline void
-bmp_iter_set_init (bitmap_iterator *bi, bitmap map,
+bmp_iter_set_init (bitmap_iterator *bi, const_bitmap map,
unsigned start_bit, unsigned *bit_no)
{
bi->elt1 = map->first;
bitmaps. START_BIT is the bit to commence from. */
static inline void
-bmp_iter_and_init (bitmap_iterator *bi, bitmap map1, bitmap map2,
+bmp_iter_and_init (bitmap_iterator *bi, const_bitmap map1, const_bitmap map2,
unsigned start_bit, unsigned *bit_no)
{
bi->elt1 = map1->first;
*/
static inline void
-bmp_iter_and_compl_init (bitmap_iterator *bi, bitmap map1, bitmap map2,
+bmp_iter_and_compl_init (bitmap_iterator *bi, const_bitmap map1, const_bitmap map2,
unsigned start_bit, unsigned *bit_no)
{
bi->elt1 = map1->first;
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