/* Functions to support general ended bitmaps.
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-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.
+GCC 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.
+GCC 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. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+#ifndef GCC_BITMAP_H
+#define GCC_BITMAP_H
/* Number of words to use for each element in the linked list. */
typedef struct bitmap_element_def
{
- struct bitmap_element_def *next; /* Next element. */
- struct bitmap_element_def *prev; /* Previous element. */
- unsigned int indx; /* regno/BITMAP_ELEMENT_ALL_BITS. */
- unsigned HOST_WIDE_INT bits[BITMAP_ELEMENT_WORDS]; /* Bits that are set. */
+ struct bitmap_element_def *next; /* Next element. */
+ struct bitmap_element_def *prev; /* Previous element. */
+ unsigned int indx; /* regno/BITMAP_ELEMENT_ALL_BITS. */
+ unsigned HOST_WIDE_INT bits[BITMAP_ELEMENT_WORDS]; /* Bits that are set. */
} bitmap_element;
/* Head of bitmap linked list. */
typedef struct bitmap_head_def {
- bitmap_element *first; /* First element in linked list. */
- bitmap_element *current; /* Last element looked at. */
- unsigned int indx; /* Index of last element looked at. */
+ bitmap_element *first; /* First element in linked list. */
+ bitmap_element *current; /* Last element looked at. */
+ unsigned int indx; /* Index of last element looked at. */
+
} bitmap_head, *bitmap;
/* Enumeration giving the various operations we support. */
enum bitmap_bits {
BITMAP_AND, /* TO = FROM1 & FROM2 */
BITMAP_AND_COMPL, /* TO = FROM1 & ~ FROM2 */
- BITMAP_IOR /* TO = FROM1 | FROM2 */
+ BITMAP_IOR, /* TO = FROM1 | FROM2 */
+ BITMAP_XOR, /* TO = FROM1 ^ FROM2 */
+ BITMAP_IOR_COMPL /* TO = FROM1 | ~FROM2 */
};
/* Global data */
-extern bitmap_element *bitmap_free; /* Freelist of bitmap elements */
-extern bitmap_element bitmap_zero; /* Zero bitmap element */
+extern bitmap_element bitmap_zero_bits; /* Zero bitmap element */
/* Clear a bitmap by freeing up the linked list. */
-extern void bitmap_clear PROTO((bitmap));
+extern void bitmap_clear PARAMS ((bitmap));
-/* Copy a bitmap to another bitmap. */
-extern void bitmap_copy PROTO((bitmap, bitmap));
+/* Copy a bitmap to another bitmap. */
+extern void bitmap_copy PARAMS ((bitmap, bitmap));
+
+/* True if two bitmaps are identical. */
+extern int bitmap_equal_p PARAMS ((bitmap, bitmap));
/* Perform an operation on two bitmaps, yielding a third. */
-extern void bitmap_operation PROTO((bitmap, bitmap, bitmap, enum bitmap_bits));
+extern int bitmap_operation PARAMS ((bitmap, bitmap, bitmap, enum bitmap_bits));
/* `or' into one bitmap the `and' of a second bitmap witih the complement
of a third. */
-extern void bitmap_ior_and_compl PROTO((bitmap, bitmap, bitmap));
+extern void bitmap_ior_and_compl PARAMS ((bitmap, bitmap, bitmap));
/* Clear a single register in a register set. */
-extern void bitmap_clear_bit PROTO((bitmap, int));
+extern void bitmap_clear_bit PARAMS ((bitmap, int));
/* Set a single register in a register set. */
-extern void bitmap_set_bit PROTO((bitmap, int));
+extern void bitmap_set_bit PARAMS ((bitmap, int));
/* Return true if a register is set in a register set. */
-extern int bitmap_bit_p PROTO((bitmap, int));
+extern int bitmap_bit_p PARAMS ((bitmap, int));
/* Debug functions to print a bitmap linked list. */
-extern void bitmap_debug PROTO((bitmap));
-extern void bitmap_debug_file PROTO((FILE *, bitmap));
+extern void debug_bitmap PARAMS ((bitmap));
+extern void debug_bitmap_file PARAMS ((FILE *, bitmap));
/* Print a bitmap */
-extern void bitmap_print PROTO((FILE *, bitmap, char *, char *));
+extern void bitmap_print PARAMS ((FILE *, bitmap, const char *, const char *));
/* Initialize a bitmap header. */
-extern bitmap bitmap_initialize PROTO((bitmap));
+extern bitmap bitmap_initialize PARAMS ((bitmap));
/* Release all memory held by bitmaps. */
-extern void bitmap_release_memory PROTO((void));
+extern void bitmap_release_memory PARAMS ((void));
-extern void debug_bitmap PROTO((bitmap));
+/* A few compatibility/functions macros for compatibility with sbitmaps */
+#define dump_bitmap(file, bitmap) bitmap_print (file, bitmap, "", "\n")
+#define bitmap_zero(a) bitmap_clear (a)
+#define bitmap_a_or_b(a,b,c) bitmap_operation (a, b, c, BITMAP_IOR)
+#define bitmap_a_and_b(a,b,c) bitmap_operation (a, b, c, BITMAP_AND)
+extern int bitmap_union_of_diff PARAMS((bitmap, bitmap, bitmap, bitmap));
+extern int bitmap_first_set_bit PARAMS((bitmap));
+extern int bitmap_last_set_bit PARAMS((bitmap));
/* Allocate a bitmap with oballoc. */
#define BITMAP_OBSTACK_ALLOC(OBSTACK) \
bitmap_initialize ((bitmap) obstack_alloc (OBSTACK, sizeof (bitmap_head)))
-/* Allocate a bitmap with alloca. */
-#define BITMAP_ALLOCA() \
- bitmap_initialize ((bitmap) alloca (sizeof (bitmap_head)))
+/* Allocate a bitmap with alloca. Note alloca cannot be passed as an
+ argument to a function, so we set a temporary variable to the value
+ returned by alloca and pass that variable to bitmap_initialize().
+ PTR is then set to the value returned from bitmap_initialize() to
+ avoid having it appear more than once in case it has side effects. */
+#define BITMAP_ALLOCA(PTR) \
+do { \
+ bitmap temp_bitmap_ = (bitmap) alloca (sizeof (bitmap_head)); \
+ (PTR) = bitmap_initialize (temp_bitmap_); \
+} while (0)
+
+/* Allocate a bitmap with xmalloc. */
+#define BITMAP_XMALLOC() \
+ bitmap_initialize ((bitmap) xmalloc (sizeof (bitmap_head)))
/* Do any cleanup needed on a bitmap when it is no longer used. */
-#define BITMAP_FREE(BITMAP) \
-do { \
- if (BITMAP) \
- { \
- bitmap_clear (BITMAP); \
- (BITMAP) = 0; \
- } \
+#define BITMAP_FREE(BITMAP) \
+do { \
+ if (BITMAP) \
+ { \
+ bitmap_clear (BITMAP); \
+ (BITMAP) = 0; \
+ } \
+} while (0)
+
+/* Do any cleanup needed on an xmalloced bitmap when it is no longer used. */
+#define BITMAP_XFREE(BITMAP) \
+do { \
+ if (BITMAP) \
+ { \
+ bitmap_clear (BITMAP); \
+ free (BITMAP); \
+ (BITMAP) = 0; \
+ } \
} while (0)
/* Do any one-time initializations needed for bitmaps. */
#define BITMAP_INIT_ONCE()
/* Loop over all bits in BITMAP, starting with MIN, setting BITNUM to the
- bit number and executing CODE for all bits that are set. */
+ bit number and executing CODE for all bits that are set. */
#define EXECUTE_IF_SET_IN_BITMAP(BITMAP, MIN, BITNUM, CODE) \
do { \
/* Loop over all bits in BITMAP1 and BITMAP2, starting with MIN, setting
BITNUM to the bit number and executing CODE for all bits that are set in
- the first bitmap and not set in the second. */
+ the first bitmap and not set in the second. */
#define EXECUTE_IF_AND_COMPL_IN_BITMAP(BITMAP1, BITMAP2, MIN, BITNUM, CODE) \
do { \
ptr2_ = ptr2_->next; \
\
tmp2_ = ((ptr2_ != 0 && ptr2_->indx == ptr1_->indx) \
- ? ptr2_ : &bitmap_zero); \
+ ? ptr2_ : &bitmap_zero_bits); \
\
for (; word_num_ < BITMAP_ELEMENT_WORDS; word_num_++) \
{ \
/* Loop over all bits in BITMAP1 and BITMAP2, starting with MIN, setting
BITNUM to the bit number and executing CODE for all bits that are set in
- the both bitmaps. */
+ the both bitmaps. */
#define EXECUTE_IF_AND_IN_BITMAP(BITMAP1, BITMAP2, MIN, BITNUM, CODE) \
do { \
word_num_ = 0; \
} \
} while (0)
+
+#endif /* GCC_BITMAP_H */
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