174 lines
6.4 KiB
C
174 lines
6.4 KiB
C
/* Simple bitmaps.
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Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
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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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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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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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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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for more details.
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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 COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef 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 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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#define SBITMAP_ELT_BITS ((unsigned) HOST_BITS_PER_WIDE_INT)
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#define SBITMAP_ELT_TYPE unsigned HOST_WIDE_INT
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typedef struct simple_bitmap_def
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{
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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 bytes; /* Size in bytes. */
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SBITMAP_ELT_TYPE elms[1]; /* The elements. */
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} *sbitmap;
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typedef SBITMAP_ELT_TYPE *sbitmap_ptr;
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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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/* Set bit number bitno in the bitmap. */
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#define SET_BIT(BITMAP, BITNO) \
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((BITMAP)->elms [(BITNO) / SBITMAP_ELT_BITS] \
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|= (SBITMAP_ELT_TYPE) 1 << (BITNO) % SBITMAP_ELT_BITS)
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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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((BITMAP)->elms [(BITNO) / SBITMAP_ELT_BITS] >> (BITNO) % SBITMAP_ELT_BITS & 1)
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/* Reset bit number bitno in the bitmap. */
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#define RESET_BIT(BITMAP, BITNO) \
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((BITMAP)->elms [(BITNO) / SBITMAP_ELT_BITS] \
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&= ~((SBITMAP_ELT_TYPE) 1 << (BITNO) % SBITMAP_ELT_BITS))
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/* Loop over all elements of SBITSET, starting with MIN. */
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#define EXECUTE_IF_SET_IN_SBITMAP(SBITMAP, MIN, N, CODE) \
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do { \
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unsigned int word_num_; \
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unsigned int bit_num_ = (MIN) % (unsigned int) SBITMAP_ELT_BITS; \
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unsigned int size_ = (SBITMAP)->size; \
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SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \
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\
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for (word_num_ = (MIN) / (unsigned int) SBITMAP_ELT_BITS; \
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word_num_ < size_; word_num_++, bit_num_ = 0) \
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{ \
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SBITMAP_ELT_TYPE word_ = ptr_[word_num_]; \
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\
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if (word_ != 0) \
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for (; bit_num_ < SBITMAP_ELT_BITS; bit_num_++) \
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{ \
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SBITMAP_ELT_TYPE _mask = (SBITMAP_ELT_TYPE) 1 << bit_num_; \
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\
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if ((word_ & _mask) != 0) \
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{ \
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word_ &= ~ _mask; \
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(N) = word_num_ * SBITMAP_ELT_BITS + bit_num_; \
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CODE; \
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if (word_ == 0) \
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break; \
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} \
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} \
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} \
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} while (0)
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#define EXECUTE_IF_SET_IN_SBITMAP_REV(SBITMAP, N, CODE) \
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do { \
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unsigned int word_num_; \
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unsigned int bit_num_; \
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unsigned int size_ = (SBITMAP)->size; \
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SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \
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\
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for (word_num_ = size_; word_num_ > 0; word_num_--) \
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{ \
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SBITMAP_ELT_TYPE word_ = ptr_[word_num_ - 1]; \
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\
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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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{ \
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SBITMAP_ELT_TYPE _mask = (SBITMAP_ELT_TYPE)1 << (bit_num_ - 1);\
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\
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if ((word_ & _mask) != 0) \
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{ \
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word_ &= ~ _mask; \
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(N) = (word_num_ - 1) * SBITMAP_ELT_BITS + bit_num_ - 1;\
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CODE; \
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if (word_ == 0) \
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break; \
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} \
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} \
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} \
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} while (0)
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#define sbitmap_free(MAP) free(MAP)
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#define sbitmap_vector_free(VEC) free(VEC)
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struct int_list;
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extern void dump_sbitmap (FILE *, sbitmap);
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extern void dump_sbitmap_file (FILE *, 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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extern sbitmap sbitmap_alloc (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 void sbitmap_copy (sbitmap, sbitmap);
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extern int sbitmap_equal (sbitmap, 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_vector_zero (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, sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_union_of_diff_cg (sbitmap, sbitmap, sbitmap, sbitmap);
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extern void sbitmap_difference (sbitmap, sbitmap, sbitmap);
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extern void sbitmap_not (sbitmap, sbitmap);
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extern void sbitmap_a_or_b_and_c (sbitmap, sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_a_or_b_and_c_cg (sbitmap, sbitmap, sbitmap, sbitmap);
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extern void sbitmap_a_and_b_or_c (sbitmap, sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_a_and_b_or_c_cg (sbitmap, sbitmap, sbitmap, sbitmap);
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extern void sbitmap_a_and_b (sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_a_and_b_cg (sbitmap, sbitmap, sbitmap);
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extern void sbitmap_a_or_b (sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_a_or_b_cg (sbitmap, sbitmap, sbitmap);
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extern void sbitmap_a_xor_b (sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_a_xor_b_cg (sbitmap, sbitmap, sbitmap);
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extern bool sbitmap_a_subset_b_p (sbitmap, sbitmap);
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extern int sbitmap_first_set_bit (sbitmap);
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extern int sbitmap_last_set_bit (sbitmap);
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extern void sbitmap_intersect_of_predsucc (sbitmap, sbitmap *, int,
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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_successors sbitmap_intersect_of_predsucc
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extern void sbitmap_union_of_predsucc (sbitmap, sbitmap *, int,
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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_successors sbitmap_union_of_predsucc
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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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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_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 debug_sbitmap (sbitmap);
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#endif /* ! GCC_SBITMAP_H */
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