/* Simple bitmaps.
- Copyright (C) 1999 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#ifndef _SBITMAP_H
+#define _SBITMAP_H 1
+
/* 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_BITS ((unsigned) 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];
+typedef struct simple_bitmap_def
+{
+ unsigned int n_bits; /* Number of bits. */
+ unsigned int size; /* Size in elements. */
+ unsigned int bytes; /* Size in bytes. */
+ SBITMAP_ELT_TYPE elms[1]; /* The elements. */
} *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)
+#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)
+/* 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)
+/* 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))
+/* 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 word_num_; \
+ unsigned int bit_num_ = (MIN) % (unsigned int) SBITMAP_ELT_BITS; \
unsigned int size_ = (SBITMAP)->size; \
SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \
\
- while (word_num_ < size_) \
+ for (word_num_ = (MIN) / (unsigned int) SBITMAP_ELT_BITS; \
+ word_num_ < size_; word_num_++, bit_num_ = 0) \
{ \
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_++; \
- } \
+ 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; \
+ } \
+ } \
+ } \
} 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));
+#define sbitmap_free(MAP) free(MAP)
+#define sbitmap_vector_free(VEC) free(VEC)
struct int_list;
-extern void sbitmap_intersect_of_predsucc PROTO ((sbitmap, sbitmap *,
+
+extern void dump_sbitmap PARAMS ((FILE *, sbitmap));
+extern void dump_sbitmap_vector PARAMS ((FILE *, const char *,
+ const char *, sbitmap *,
+ int));
+extern sbitmap sbitmap_alloc PARAMS ((unsigned int));
+extern sbitmap *sbitmap_vector_alloc PARAMS ((unsigned int, unsigned int));
+extern void sbitmap_copy PARAMS ((sbitmap, sbitmap));
+extern void sbitmap_zero PARAMS ((sbitmap));
+extern void sbitmap_ones PARAMS ((sbitmap));
+extern void sbitmap_vector_zero PARAMS ((sbitmap *, unsigned int));
+extern void sbitmap_vector_ones PARAMS ((sbitmap *, unsigned int));
+
+extern int sbitmap_union_of_diff PARAMS ((sbitmap, sbitmap, sbitmap,
+ sbitmap));
+extern void sbitmap_difference PARAMS ((sbitmap, sbitmap, sbitmap));
+extern void sbitmap_not PARAMS ((sbitmap, sbitmap));
+extern int sbitmap_a_or_b_and_c PARAMS ((sbitmap, sbitmap, sbitmap,
+ sbitmap));
+extern int sbitmap_a_and_b_or_c PARAMS ((sbitmap, sbitmap, sbitmap,
+ sbitmap));
+extern int sbitmap_a_and_b PARAMS ((sbitmap, sbitmap, sbitmap));
+extern int sbitmap_a_or_b PARAMS ((sbitmap, sbitmap, sbitmap));
+extern int sbitmap_a_subset_b_p PARAMS ((sbitmap, sbitmap));
+
+extern int sbitmap_first_set_bit PARAMS ((sbitmap));
+extern int sbitmap_last_set_bit PARAMS ((sbitmap));
+
+extern void sbitmap_intersect_of_predsucc PARAMS ((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 **));
+extern void sbitmap_union_of_predsucc PARAMS ((sbitmap, sbitmap *, int,
+ struct int_list **));
#define sbitmap_union_of_predecessors sbitmap_union_of_predsucc
#define sbitmap_union_of_successors sbitmap_union_of_predsucc
/* Intersection and Union of preds/succs using the new flow graph
structure instead of the pred/succ arrays. */
-extern void sbitmap_intersection_of_succs PROTO ((sbitmap, sbitmap *, int));
-extern void sbitmap_intersection_of_preds PROTO ((sbitmap, sbitmap *, int));
-extern void sbitmap_union_of_succs PROTO ((sbitmap, sbitmap *, int));
-extern void sbitmap_union_of_preds PROTO ((sbitmap, sbitmap *, int));
+extern void sbitmap_intersection_of_succs PARAMS ((sbitmap, sbitmap *, int));
+extern void sbitmap_intersection_of_preds PARAMS ((sbitmap, sbitmap *, int));
+extern void sbitmap_union_of_succs PARAMS ((sbitmap, sbitmap *, int));
+extern void sbitmap_union_of_preds PARAMS ((sbitmap, sbitmap *, int));
+extern void debug_sbitmap PARAMS ((sbitmap));
+#endif /* _SBITMAP_H */
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