123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/* 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
|