| /* Simple bitmaps. |
| Copyright (C) 1999 Free Software Foundation, Inc. |
| |
| This file is part of GNU CC. |
| |
| GNU CC 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 version. |
| |
| GNU CC 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 GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* It's not clear yet whether using bitmap.[ch] will be a win. |
| It should be straightforward to convert so for now we keep things simple |
| while more important issues are dealt with. */ |
| |
| #define SBITMAP_ELT_BITS HOST_BITS_PER_WIDE_INT |
| #define SBITMAP_ELT_TYPE unsigned HOST_WIDE_INT |
| |
| typedef struct simple_bitmap_def { |
| /* Number of bits. */ |
| int n_bits; |
| /* Size in elements. */ |
| int size; |
| /* Size in bytes. */ |
| int bytes; |
| /* The elements. */ |
| SBITMAP_ELT_TYPE elms[1]; |
| } *sbitmap; |
| |
| typedef SBITMAP_ELT_TYPE *sbitmap_ptr; |
| |
| /* Return the set size needed for N elements. */ |
| #define SBITMAP_SET_SIZE(n) (((n) + SBITMAP_ELT_BITS - 1) / SBITMAP_ELT_BITS) |
| |
| /* set bit number bitno in the bitmap */ |
| #define SET_BIT(bitmap, bitno) \ |
| ((bitmap)->elms [(bitno) / SBITMAP_ELT_BITS] \ |
| |= (SBITMAP_ELT_TYPE) 1 << (bitno) % SBITMAP_ELT_BITS) |
| |
| /* test if bit number bitno in the bitmap is set */ |
| #define TEST_BIT(bitmap, bitno) \ |
| ((bitmap)->elms [(bitno) / SBITMAP_ELT_BITS] >> (bitno) % SBITMAP_ELT_BITS & 1) |
| |
| /* reset bit number bitno in the bitmap */ |
| #define RESET_BIT(bitmap, bitno) \ |
| ((bitmap)->elms [(bitno) / SBITMAP_ELT_BITS] \ |
| &= ~((SBITMAP_ELT_TYPE) 1 << (bitno) % SBITMAP_ELT_BITS)) |
| |
| /* Loop over all elements of SBITSET, starting with MIN. */ |
| #define EXECUTE_IF_SET_IN_SBITMAP(SBITMAP, MIN, N, CODE) \ |
| do { \ |
| unsigned int bit_num_ = (MIN) % (unsigned) SBITMAP_ELT_BITS; \ |
| unsigned int word_num_ = (MIN) / (unsigned) SBITMAP_ELT_BITS; \ |
| unsigned int size_ = (SBITMAP)->size; \ |
| SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \ |
| \ |
| while (word_num_ < size_) \ |
| { \ |
| SBITMAP_ELT_TYPE word_ = ptr_[word_num_]; \ |
| if (word_ != 0) \ |
| { \ |
| for (; bit_num_ < SBITMAP_ELT_BITS; ++bit_num_) \ |
| { \ |
| SBITMAP_ELT_TYPE mask_ = (SBITMAP_ELT_TYPE)1 << bit_num_; \ |
| if ((word_ & mask_) != 0) \ |
| { \ |
| word_ &= ~mask_; \ |
| (N) = word_num_ * SBITMAP_ELT_BITS + bit_num_; \ |
| CODE; \ |
| if (word_ == 0) \ |
| break; \ |
| } \ |
| } \ |
| } \ |
| bit_num_ = 0; \ |
| word_num_++; \ |
| } \ |
| } while (0) |
| |
| #define sbitmap_free(map) free(map) |
| #define sbitmap_vector_free(vec) free(vec) |
| |
| extern void dump_sbitmap PROTO ((FILE *, sbitmap)); |
| extern void dump_sbitmap_vector PROTO ((FILE *, const char *, const char *, |
| sbitmap *, int)); |
| |
| extern sbitmap sbitmap_alloc PROTO ((int)); |
| extern sbitmap *sbitmap_vector_alloc PROTO ((int, int)); |
| |
| extern void sbitmap_copy PROTO ((sbitmap, sbitmap)); |
| extern void sbitmap_zero PROTO ((sbitmap)); |
| extern void sbitmap_ones PROTO ((sbitmap)); |
| extern void sbitmap_vector_zero PROTO ((sbitmap *, int)); |
| extern void sbitmap_vector_ones PROTO ((sbitmap *, int)); |
| |
| extern int sbitmap_union_of_diff PROTO ((sbitmap, sbitmap, sbitmap, sbitmap)); |
| extern void sbitmap_difference PROTO ((sbitmap, sbitmap, sbitmap)); |
| extern void sbitmap_not PROTO ((sbitmap, sbitmap)); |
| extern int sbitmap_a_or_b_and_c PROTO ((sbitmap, sbitmap, sbitmap, sbitmap)); |
| extern int sbitmap_a_and_b_or_c PROTO ((sbitmap, sbitmap, sbitmap, sbitmap)); |
| extern int sbitmap_a_and_b PROTO ((sbitmap, sbitmap, sbitmap)); |
| extern int sbitmap_a_or_b PROTO ((sbitmap, sbitmap, sbitmap)); |
| |
| struct int_list; |
| extern void sbitmap_intersect_of_predsucc PROTO ((sbitmap, sbitmap *, |
| int, struct int_list **)); |
| #define sbitmap_intersect_of_predecessors sbitmap_intersect_of_predsucc |
| #define sbitmap_intersect_of_successors sbitmap_intersect_of_predsucc |
| |
| extern void sbitmap_union_of_predsucc PROTO ((sbitmap, sbitmap *, int, |
| struct int_list **)); |
| #define sbitmap_union_of_predecessors sbitmap_union_of_predsucc |
| #define sbitmap_union_of_successors sbitmap_union_of_predsucc |