/* Simple bitmaps.
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/* Simple bitmaps.
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Copyright (C) 1999, 2000, 2002, 2003, 2004, 2006, 2007, 2008
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Copyright (C) 1999, 2000, 2002, 2003, 2004, 2006, 2007, 2008
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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Software Foundation; either version 3, or (at your option) any later
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version.
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_SBITMAP_H
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#ifndef GCC_SBITMAP_H
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#define GCC_SBITMAP_H
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#define GCC_SBITMAP_H
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/* It's not clear yet whether using bitmap.[ch] will be a win.
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/* It's not clear yet whether using bitmap.[ch] will be a win.
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It should be straightforward to convert so for now we keep things simple
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It should be straightforward to convert so for now we keep things simple
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while more important issues are dealt with. */
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while more important issues are dealt with. */
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#define SBITMAP_ELT_BITS ((unsigned) HOST_BITS_PER_WIDEST_FAST_INT)
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#define SBITMAP_ELT_BITS ((unsigned) HOST_BITS_PER_WIDEST_FAST_INT)
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#define SBITMAP_ELT_TYPE unsigned HOST_WIDEST_FAST_INT
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#define SBITMAP_ELT_TYPE unsigned HOST_WIDEST_FAST_INT
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/* Can't use SBITMAP_ELT_BITS in this macro because it contains a
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/* Can't use SBITMAP_ELT_BITS in this macro because it contains a
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cast. There is no perfect macro in GCC to test against. This
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cast. There is no perfect macro in GCC to test against. This
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suffices for roughly 99% of the hosts we run on, and the rest
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suffices for roughly 99% of the hosts we run on, and the rest
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don't have 256 bit integers. */
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don't have 256 bit integers. */
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#if HOST_BITS_PER_WIDEST_FAST_INT > 255
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#if HOST_BITS_PER_WIDEST_FAST_INT > 255
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#error Need to increase size of datatype used for popcount
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#error Need to increase size of datatype used for popcount
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#endif
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#endif
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typedef struct simple_bitmap_def
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typedef struct simple_bitmap_def
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{
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{
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unsigned char *popcount; /* Population count. */
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unsigned char *popcount; /* Population count. */
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unsigned int n_bits; /* Number of bits. */
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unsigned int n_bits; /* Number of bits. */
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unsigned int size; /* Size in elements. */
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unsigned int size; /* Size in elements. */
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SBITMAP_ELT_TYPE elms[1]; /* The elements. */
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SBITMAP_ELT_TYPE elms[1]; /* The elements. */
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} *sbitmap;
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} *sbitmap;
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typedef const struct simple_bitmap_def *const_sbitmap;
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typedef const struct simple_bitmap_def *const_sbitmap;
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typedef SBITMAP_ELT_TYPE *sbitmap_ptr;
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typedef SBITMAP_ELT_TYPE *sbitmap_ptr;
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typedef const SBITMAP_ELT_TYPE *const_sbitmap_ptr;
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typedef const SBITMAP_ELT_TYPE *const_sbitmap_ptr;
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/* Return the set size needed for N elements. */
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/* Return the set size needed for N elements. */
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#define SBITMAP_SET_SIZE(N) (((N) + SBITMAP_ELT_BITS - 1) / SBITMAP_ELT_BITS)
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#define SBITMAP_SET_SIZE(N) (((N) + SBITMAP_ELT_BITS - 1) / SBITMAP_ELT_BITS)
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#define SBITMAP_SIZE_BYTES(BITMAP) ((BITMAP)->size * sizeof (SBITMAP_ELT_TYPE))
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#define SBITMAP_SIZE_BYTES(BITMAP) ((BITMAP)->size * sizeof (SBITMAP_ELT_TYPE))
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/* Test if bit number bitno in the bitmap is set. */
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/* Test if bit number bitno in the bitmap is set. */
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#define TEST_BIT(BITMAP, BITNO) \
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#define TEST_BIT(BITMAP, BITNO) \
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((BITMAP)->elms [(BITNO) / SBITMAP_ELT_BITS] >> (BITNO) % SBITMAP_ELT_BITS & 1)
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((BITMAP)->elms [(BITNO) / SBITMAP_ELT_BITS] >> (BITNO) % SBITMAP_ELT_BITS & 1)
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/* Set bit number BITNO in the sbitmap MAP. Updates population count
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/* Set bit number BITNO in the sbitmap MAP. Updates population count
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if this bitmap has one. */
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if this bitmap has one. */
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static inline void
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static inline void
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SET_BIT (sbitmap map, unsigned int bitno)
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SET_BIT (sbitmap map, unsigned int bitno)
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{
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{
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if (map->popcount)
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if (map->popcount)
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{
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{
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bool oldbit;
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bool oldbit;
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oldbit = TEST_BIT (map, bitno);
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oldbit = TEST_BIT (map, bitno);
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if (!oldbit)
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if (!oldbit)
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map->popcount[bitno / SBITMAP_ELT_BITS]++;
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map->popcount[bitno / SBITMAP_ELT_BITS]++;
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}
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}
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map->elms[bitno / SBITMAP_ELT_BITS]
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map->elms[bitno / SBITMAP_ELT_BITS]
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|= (SBITMAP_ELT_TYPE) 1 << (bitno) % SBITMAP_ELT_BITS;
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|= (SBITMAP_ELT_TYPE) 1 << (bitno) % SBITMAP_ELT_BITS;
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}
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}
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/* Reset bit number BITNO in the sbitmap MAP. Updates population
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/* Reset bit number BITNO in the sbitmap MAP. Updates population
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count if this bitmap has one. */
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count if this bitmap has one. */
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static inline void
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static inline void
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RESET_BIT (sbitmap map, unsigned int bitno)
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RESET_BIT (sbitmap map, unsigned int bitno)
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{
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{
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if (map->popcount)
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if (map->popcount)
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{
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{
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bool oldbit;
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bool oldbit;
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oldbit = TEST_BIT (map, bitno);
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oldbit = TEST_BIT (map, bitno);
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if (oldbit)
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if (oldbit)
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map->popcount[bitno / SBITMAP_ELT_BITS]--;
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map->popcount[bitno / SBITMAP_ELT_BITS]--;
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}
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}
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map->elms[bitno / SBITMAP_ELT_BITS]
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map->elms[bitno / SBITMAP_ELT_BITS]
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&= ~((SBITMAP_ELT_TYPE) 1 << (bitno) % SBITMAP_ELT_BITS);
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&= ~((SBITMAP_ELT_TYPE) 1 << (bitno) % SBITMAP_ELT_BITS);
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}
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}
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/* The iterator for sbitmap. */
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/* The iterator for sbitmap. */
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typedef struct {
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typedef struct {
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/* The pointer to the first word of the bitmap. */
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/* The pointer to the first word of the bitmap. */
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const SBITMAP_ELT_TYPE *ptr;
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const SBITMAP_ELT_TYPE *ptr;
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/* The size of the bitmap. */
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/* The size of the bitmap. */
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unsigned int size;
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unsigned int size;
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/* The current word index. */
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/* The current word index. */
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unsigned int word_num;
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unsigned int word_num;
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/* The current bit index (not modulo SBITMAP_ELT_BITS). */
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/* The current bit index (not modulo SBITMAP_ELT_BITS). */
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unsigned int bit_num;
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unsigned int bit_num;
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/* The words currently visited. */
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/* The words currently visited. */
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SBITMAP_ELT_TYPE word;
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SBITMAP_ELT_TYPE word;
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} sbitmap_iterator;
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} sbitmap_iterator;
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/* Initialize the iterator I with sbitmap BMP and the initial index
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/* Initialize the iterator I with sbitmap BMP and the initial index
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MIN. */
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MIN. */
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static inline void
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static inline void
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sbitmap_iter_init (sbitmap_iterator *i, const_sbitmap bmp, unsigned int min)
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sbitmap_iter_init (sbitmap_iterator *i, const_sbitmap bmp, unsigned int min)
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{
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{
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i->word_num = min / (unsigned int) SBITMAP_ELT_BITS;
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i->word_num = min / (unsigned int) SBITMAP_ELT_BITS;
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i->bit_num = min;
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i->bit_num = min;
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i->size = bmp->size;
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i->size = bmp->size;
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i->ptr = bmp->elms;
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i->ptr = bmp->elms;
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if (i->word_num >= i->size)
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if (i->word_num >= i->size)
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i->word = 0;
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i->word = 0;
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else
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else
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i->word = (i->ptr[i->word_num]
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i->word = (i->ptr[i->word_num]
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>> (i->bit_num % (unsigned int) SBITMAP_ELT_BITS));
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>> (i->bit_num % (unsigned int) SBITMAP_ELT_BITS));
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}
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}
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/* Return true if we have more bits to visit, in which case *N is set
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/* Return true if we have more bits to visit, in which case *N is set
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to the index of the bit to be visited. Otherwise, return
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to the index of the bit to be visited. Otherwise, return
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false. */
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false. */
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static inline bool
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static inline bool
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sbitmap_iter_cond (sbitmap_iterator *i, unsigned int *n)
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sbitmap_iter_cond (sbitmap_iterator *i, unsigned int *n)
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{
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{
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/* Skip words that are zeros. */
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/* Skip words that are zeros. */
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for (; i->word == 0; i->word = i->ptr[i->word_num])
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for (; i->word == 0; i->word = i->ptr[i->word_num])
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{
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{
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i->word_num++;
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i->word_num++;
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/* If we have reached the end, break. */
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/* If we have reached the end, break. */
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if (i->word_num >= i->size)
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if (i->word_num >= i->size)
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return false;
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return false;
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i->bit_num = i->word_num * SBITMAP_ELT_BITS;
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i->bit_num = i->word_num * SBITMAP_ELT_BITS;
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}
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}
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/* Skip bits that are zero. */
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/* Skip bits that are zero. */
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for (; (i->word & 1) == 0; i->word >>= 1)
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for (; (i->word & 1) == 0; i->word >>= 1)
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i->bit_num++;
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i->bit_num++;
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*n = i->bit_num;
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*n = i->bit_num;
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return true;
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return true;
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}
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}
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/* Advance to the next bit. */
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/* Advance to the next bit. */
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static inline void
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static inline void
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sbitmap_iter_next (sbitmap_iterator *i)
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sbitmap_iter_next (sbitmap_iterator *i)
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{
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{
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i->word >>= 1;
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i->word >>= 1;
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i->bit_num++;
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i->bit_num++;
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}
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}
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/* Loop over all elements of SBITMAP, starting with MIN. In each
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/* Loop over all elements of SBITMAP, starting with MIN. In each
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iteration, N is set to the index of the bit being visited. ITER is
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iteration, N is set to the index of the bit being visited. ITER is
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an instance of sbitmap_iterator used to iterate the bitmap. */
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an instance of sbitmap_iterator used to iterate the bitmap. */
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#define EXECUTE_IF_SET_IN_SBITMAP(SBITMAP, MIN, N, ITER) \
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#define EXECUTE_IF_SET_IN_SBITMAP(SBITMAP, MIN, N, ITER) \
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for (sbitmap_iter_init (&(ITER), (SBITMAP), (MIN)); \
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for (sbitmap_iter_init (&(ITER), (SBITMAP), (MIN)); \
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sbitmap_iter_cond (&(ITER), &(N)); \
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sbitmap_iter_cond (&(ITER), &(N)); \
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sbitmap_iter_next (&(ITER)))
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sbitmap_iter_next (&(ITER)))
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#define EXECUTE_IF_SET_IN_SBITMAP_REV(SBITMAP, N, CODE) \
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#define EXECUTE_IF_SET_IN_SBITMAP_REV(SBITMAP, N, CODE) \
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do { \
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do { \
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unsigned int word_num_; \
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unsigned int word_num_; \
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unsigned int bit_num_; \
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unsigned int bit_num_; \
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unsigned int size_ = (SBITMAP)->size; \
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unsigned int size_ = (SBITMAP)->size; \
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SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \
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SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \
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\
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\
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for (word_num_ = size_; word_num_ > 0; word_num_--) \
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for (word_num_ = size_; word_num_ > 0; word_num_--) \
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{ \
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{ \
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SBITMAP_ELT_TYPE word_ = ptr_[word_num_ - 1]; \
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SBITMAP_ELT_TYPE word_ = ptr_[word_num_ - 1]; \
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\
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\
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if (word_ != 0) \
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if (word_ != 0) \
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for (bit_num_ = SBITMAP_ELT_BITS; bit_num_ > 0; bit_num_--) \
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for (bit_num_ = SBITMAP_ELT_BITS; bit_num_ > 0; bit_num_--) \
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{ \
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{ \
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SBITMAP_ELT_TYPE _mask = (SBITMAP_ELT_TYPE)1 << (bit_num_ - 1);\
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SBITMAP_ELT_TYPE _mask = (SBITMAP_ELT_TYPE)1 << (bit_num_ - 1);\
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\
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\
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if ((word_ & _mask) != 0) \
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if ((word_ & _mask) != 0) \
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{ \
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{ \
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word_ &= ~ _mask; \
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word_ &= ~ _mask; \
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(N) = (word_num_ - 1) * SBITMAP_ELT_BITS + bit_num_ - 1;\
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(N) = (word_num_ - 1) * SBITMAP_ELT_BITS + bit_num_ - 1;\
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CODE; \
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CODE; \
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if (word_ == 0) \
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if (word_ == 0) \
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break; \
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break; \
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} \
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} \
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} \
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} \
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} \
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} \
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} while (0)
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} while (0)
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#define sbitmap_free(MAP) (free((MAP)->popcount), free((MAP)))
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#define sbitmap_free(MAP) (free((MAP)->popcount), free((MAP)))
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#define sbitmap_vector_free(VEC) free(VEC)
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#define sbitmap_vector_free(VEC) free(VEC)
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struct int_list;
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struct int_list;
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extern void dump_sbitmap (FILE *, const_sbitmap);
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extern void dump_sbitmap (FILE *, const_sbitmap);
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extern void dump_sbitmap_file (FILE *, const_sbitmap);
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extern void dump_sbitmap_file (FILE *, const_sbitmap);
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extern void dump_sbitmap_vector (FILE *, const char *, const char *, sbitmap *,
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extern void dump_sbitmap_vector (FILE *, const char *, const char *, sbitmap *,
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int);
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int);
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extern sbitmap sbitmap_alloc (unsigned int);
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extern sbitmap sbitmap_alloc (unsigned int);
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extern sbitmap sbitmap_alloc_with_popcount (unsigned int);
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extern sbitmap sbitmap_alloc_with_popcount (unsigned int);
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extern sbitmap *sbitmap_vector_alloc (unsigned int, unsigned int);
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extern sbitmap *sbitmap_vector_alloc (unsigned int, unsigned int);
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extern sbitmap sbitmap_resize (sbitmap, unsigned int, int);
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extern sbitmap sbitmap_resize (sbitmap, unsigned int, int);
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extern void sbitmap_copy (sbitmap, const_sbitmap);
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extern void sbitmap_copy (sbitmap, const_sbitmap);
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extern void sbitmap_copy_n (sbitmap, const_sbitmap, unsigned int);
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extern void sbitmap_copy_n (sbitmap, const_sbitmap, unsigned int);
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extern int sbitmap_equal (const_sbitmap, const_sbitmap);
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extern int sbitmap_equal (const_sbitmap, const_sbitmap);
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extern bool sbitmap_empty_p (const_sbitmap);
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extern bool sbitmap_empty_p (const_sbitmap);
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extern bool sbitmap_range_empty_p (const_sbitmap, unsigned int, unsigned int);
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extern bool sbitmap_range_empty_p (const_sbitmap, unsigned int, unsigned int);
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extern void sbitmap_zero (sbitmap);
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extern void sbitmap_zero (sbitmap);
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extern void sbitmap_ones (sbitmap);
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extern void sbitmap_ones (sbitmap);
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extern void sbitmap_vector_zero (sbitmap *, unsigned int);
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extern void sbitmap_vector_zero (sbitmap *, unsigned int);
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extern void sbitmap_vector_ones (sbitmap *, unsigned int);
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extern void sbitmap_vector_ones (sbitmap *, unsigned int);
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extern void sbitmap_union_of_diff (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_union_of_diff (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_union_of_diff_cg (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_union_of_diff_cg (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_difference (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_difference (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_not (sbitmap, const_sbitmap);
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extern void sbitmap_not (sbitmap, const_sbitmap);
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extern void sbitmap_a_or_b_and_c (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_or_b_and_c (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_or_b_and_c_cg (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_or_b_and_c_cg (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_and_b_or_c (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_and_b_or_c (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_and_b_or_c_cg (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_and_b_or_c_cg (sbitmap, const_sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_any_common_bits (const_sbitmap, const_sbitmap);
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extern bool sbitmap_any_common_bits (const_sbitmap, const_sbitmap);
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extern void sbitmap_a_and_b (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_and_b (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_and_b_cg (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_and_b_cg (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_or_b (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_or_b (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_or_b_cg (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_or_b_cg (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_xor_b (sbitmap, const_sbitmap, const_sbitmap);
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extern void sbitmap_a_xor_b (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_xor_b_cg (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_xor_b_cg (sbitmap, const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_subset_b_p (const_sbitmap, const_sbitmap);
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extern bool sbitmap_a_subset_b_p (const_sbitmap, const_sbitmap);
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extern int sbitmap_first_set_bit (const_sbitmap);
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extern int sbitmap_first_set_bit (const_sbitmap);
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extern int sbitmap_last_set_bit (const_sbitmap);
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extern int sbitmap_last_set_bit (const_sbitmap);
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extern void sbitmap_intersect_of_predsucc (sbitmap, sbitmap *, int,
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extern void sbitmap_intersect_of_predsucc (sbitmap, sbitmap *, int,
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struct int_list **);
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struct int_list **);
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#define sbitmap_intersect_of_predecessors sbitmap_intersect_of_predsucc
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#define sbitmap_intersect_of_predecessors sbitmap_intersect_of_predsucc
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#define sbitmap_intersect_of_successors sbitmap_intersect_of_predsucc
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#define sbitmap_intersect_of_successors sbitmap_intersect_of_predsucc
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extern void sbitmap_union_of_predsucc (sbitmap, sbitmap *, int,
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extern void sbitmap_union_of_predsucc (sbitmap, sbitmap *, int,
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struct int_list **);
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struct int_list **);
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#define sbitmap_union_of_predecessors sbitmap_union_of_predsucc
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#define sbitmap_union_of_predecessors sbitmap_union_of_predsucc
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#define sbitmap_union_of_successors sbitmap_union_of_predsucc
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#define sbitmap_union_of_successors sbitmap_union_of_predsucc
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|
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/* Intersection and Union of preds/succs using the new flow graph
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/* Intersection and Union of preds/succs using the new flow graph
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structure instead of the pred/succ arrays. */
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structure instead of the pred/succ arrays. */
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extern void sbitmap_intersection_of_succs (sbitmap, sbitmap *, int);
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extern void sbitmap_intersection_of_succs (sbitmap, sbitmap *, int);
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extern void sbitmap_intersection_of_preds (sbitmap, sbitmap *, int);
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extern void sbitmap_intersection_of_preds (sbitmap, sbitmap *, int);
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extern void sbitmap_union_of_succs (sbitmap, sbitmap *, int);
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extern void sbitmap_union_of_succs (sbitmap, sbitmap *, int);
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extern void sbitmap_union_of_preds (sbitmap, sbitmap *, int);
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extern void sbitmap_union_of_preds (sbitmap, sbitmap *, int);
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extern void debug_sbitmap (const_sbitmap);
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extern void debug_sbitmap (const_sbitmap);
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extern sbitmap sbitmap_realloc (sbitmap, unsigned int);
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extern sbitmap sbitmap_realloc (sbitmap, unsigned int);
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extern unsigned long sbitmap_popcount(const_sbitmap, unsigned long);
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extern unsigned long sbitmap_popcount(const_sbitmap, unsigned long);
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extern void sbitmap_verify_popcount (const_sbitmap);
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extern void sbitmap_verify_popcount (const_sbitmap);
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#endif /* ! GCC_SBITMAP_H */
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#endif /* ! GCC_SBITMAP_H */
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