/* Functions to support general ended bitmaps.
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/* Functions to support general ended bitmaps.
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GCC.
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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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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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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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Software Foundation; either version 3, or (at your option) any later
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version.
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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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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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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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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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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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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_BITMAP_H
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#ifndef GCC_BITMAP_H
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#define GCC_BITMAP_H
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#define GCC_BITMAP_H
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#include "hashtab.h"
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#include "hashtab.h"
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/* Fundamental storage type for bitmap. */
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/* Fundamental storage type for bitmap. */
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typedef unsigned long BITMAP_WORD;
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typedef unsigned long BITMAP_WORD;
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/* BITMAP_WORD_BITS needs to be unsigned, but cannot contain casts as
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/* BITMAP_WORD_BITS needs to be unsigned, but cannot contain casts as
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it is used in preprocessor directives -- hence the 1u. */
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it is used in preprocessor directives -- hence the 1u. */
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#define BITMAP_WORD_BITS (CHAR_BIT * SIZEOF_LONG * 1u)
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#define BITMAP_WORD_BITS (CHAR_BIT * SIZEOF_LONG * 1u)
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/* Number of words to use for each element in the linked list. */
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/* Number of words to use for each element in the linked list. */
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#ifndef BITMAP_ELEMENT_WORDS
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#ifndef BITMAP_ELEMENT_WORDS
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#define BITMAP_ELEMENT_WORDS ((128 + BITMAP_WORD_BITS - 1) / BITMAP_WORD_BITS)
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#define BITMAP_ELEMENT_WORDS ((128 + BITMAP_WORD_BITS - 1) / BITMAP_WORD_BITS)
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#endif
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#endif
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/* Number of bits in each actual element of a bitmap. */
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/* Number of bits in each actual element of a bitmap. */
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#define BITMAP_ELEMENT_ALL_BITS (BITMAP_ELEMENT_WORDS * BITMAP_WORD_BITS)
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#define BITMAP_ELEMENT_ALL_BITS (BITMAP_ELEMENT_WORDS * BITMAP_WORD_BITS)
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/* Obstack for allocating bitmaps and elements from. */
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/* Obstack for allocating bitmaps and elements from. */
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typedef struct bitmap_obstack GTY (())
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typedef struct bitmap_obstack GTY (())
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{
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{
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struct bitmap_element_def *elements;
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struct bitmap_element_def *elements;
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struct bitmap_head_def *heads;
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struct bitmap_head_def *heads;
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struct obstack GTY ((skip)) obstack;
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struct obstack GTY ((skip)) obstack;
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} bitmap_obstack;
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} bitmap_obstack;
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/* Bitmap set element. We use a linked list to hold only the bits that
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/* Bitmap set element. We use a linked list to hold only the bits that
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are set. This allows for use to grow the bitset dynamically without
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are set. This allows for use to grow the bitset dynamically without
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having to realloc and copy a giant bit array.
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having to realloc and copy a giant bit array.
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The free list is implemented as a list of lists. There is one
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The free list is implemented as a list of lists. There is one
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outer list connected together by prev fields. Each element of that
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outer list connected together by prev fields. Each element of that
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outer is an inner list (that may consist only of the outer list
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outer is an inner list (that may consist only of the outer list
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element) that are connected by the next fields. The prev pointer
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element) that are connected by the next fields. The prev pointer
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is undefined for interior elements. This allows
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is undefined for interior elements. This allows
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bitmap_elt_clear_from to be implemented in unit time rather than
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bitmap_elt_clear_from to be implemented in unit time rather than
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linear in the number of elements to be freed. */
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linear in the number of elements to be freed. */
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typedef struct bitmap_element_def GTY(())
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typedef struct bitmap_element_def GTY(())
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{
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{
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struct bitmap_element_def *next; /* Next element. */
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struct bitmap_element_def *next; /* Next element. */
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struct bitmap_element_def *prev; /* Previous element. */
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struct bitmap_element_def *prev; /* Previous element. */
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unsigned int indx; /* regno/BITMAP_ELEMENT_ALL_BITS. */
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unsigned int indx; /* regno/BITMAP_ELEMENT_ALL_BITS. */
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BITMAP_WORD bits[BITMAP_ELEMENT_WORDS]; /* Bits that are set. */
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BITMAP_WORD bits[BITMAP_ELEMENT_WORDS]; /* Bits that are set. */
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} bitmap_element;
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} bitmap_element;
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/* Head of bitmap linked list. */
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/* Head of bitmap linked list. */
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typedef struct bitmap_head_def GTY(()) {
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typedef struct bitmap_head_def GTY(()) {
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bitmap_element *first; /* First element in linked list. */
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bitmap_element *first; /* First element in linked list. */
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bitmap_element *current; /* Last element looked at. */
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bitmap_element *current; /* Last element looked at. */
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unsigned int indx; /* Index of last element looked at. */
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unsigned int indx; /* Index of last element looked at. */
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bitmap_obstack *obstack; /* Obstack to allocate elements from.
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bitmap_obstack *obstack; /* Obstack to allocate elements from.
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If NULL, then use ggc_alloc. */
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If NULL, then use ggc_alloc. */
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} bitmap_head;
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} bitmap_head;
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/* Global data */
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/* Global data */
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extern bitmap_element bitmap_zero_bits; /* Zero bitmap element */
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extern bitmap_element bitmap_zero_bits; /* Zero bitmap element */
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extern bitmap_obstack bitmap_default_obstack; /* Default bitmap obstack */
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extern bitmap_obstack bitmap_default_obstack; /* Default bitmap obstack */
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/* Clear a bitmap by freeing up the linked list. */
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/* Clear a bitmap by freeing up the linked list. */
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extern void bitmap_clear (bitmap);
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extern void bitmap_clear (bitmap);
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/* Copy a bitmap to another bitmap. */
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/* Copy a bitmap to another bitmap. */
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extern void bitmap_copy (bitmap, bitmap);
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extern void bitmap_copy (bitmap, bitmap);
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/* True if two bitmaps are identical. */
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/* True if two bitmaps are identical. */
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extern bool bitmap_equal_p (bitmap, bitmap);
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extern bool bitmap_equal_p (bitmap, bitmap);
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/* True if the bitmaps intersect (their AND is non-empty). */
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/* True if the bitmaps intersect (their AND is non-empty). */
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extern bool bitmap_intersect_p (bitmap, bitmap);
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extern bool bitmap_intersect_p (bitmap, bitmap);
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/* True if the complement of the second intersects the first (their
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/* True if the complement of the second intersects the first (their
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AND_COMPL is non-empty). */
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AND_COMPL is non-empty). */
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extern bool bitmap_intersect_compl_p (bitmap, bitmap);
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extern bool bitmap_intersect_compl_p (bitmap, bitmap);
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/* True if MAP is an empty bitmap. */
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/* True if MAP is an empty bitmap. */
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#define bitmap_empty_p(MAP) (!(MAP)->first)
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#define bitmap_empty_p(MAP) (!(MAP)->first)
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/* Count the number of bits set in the bitmap. */
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/* Count the number of bits set in the bitmap. */
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extern unsigned long bitmap_count_bits (bitmap);
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extern unsigned long bitmap_count_bits (bitmap);
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/* Boolean operations on bitmaps. The _into variants are two operand
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/* Boolean operations on bitmaps. The _into variants are two operand
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versions that modify the first source operand. The other variants
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versions that modify the first source operand. The other variants
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are three operand versions that to not destroy the source bitmaps.
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are three operand versions that to not destroy the source bitmaps.
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The operations supported are &, & ~, |, ^. */
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The operations supported are &, & ~, |, ^. */
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extern void bitmap_and (bitmap, bitmap, bitmap);
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extern void bitmap_and (bitmap, bitmap, bitmap);
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extern void bitmap_and_into (bitmap, bitmap);
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extern void bitmap_and_into (bitmap, bitmap);
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extern void bitmap_and_compl (bitmap, bitmap, bitmap);
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extern void bitmap_and_compl (bitmap, bitmap, bitmap);
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extern bool bitmap_and_compl_into (bitmap, bitmap);
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extern bool bitmap_and_compl_into (bitmap, bitmap);
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#define bitmap_compl_and(DST, A, B) bitmap_and_compl (DST, B, A)
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#define bitmap_compl_and(DST, A, B) bitmap_and_compl (DST, B, A)
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extern void bitmap_compl_and_into (bitmap, bitmap);
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extern void bitmap_compl_and_into (bitmap, bitmap);
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extern void bitmap_clear_range (bitmap, unsigned int, unsigned int);
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extern void bitmap_clear_range (bitmap, unsigned int, unsigned int);
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extern bool bitmap_ior (bitmap, bitmap, bitmap);
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extern bool bitmap_ior (bitmap, bitmap, bitmap);
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extern bool bitmap_ior_into (bitmap, bitmap);
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extern bool bitmap_ior_into (bitmap, bitmap);
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extern void bitmap_xor (bitmap, bitmap, bitmap);
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extern void bitmap_xor (bitmap, bitmap, bitmap);
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extern void bitmap_xor_into (bitmap, bitmap);
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extern void bitmap_xor_into (bitmap, bitmap);
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/* DST = A | (B & ~C). Return true if DST changes. */
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/* DST = A | (B & ~C). Return true if DST changes. */
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extern bool bitmap_ior_and_compl (bitmap DST, bitmap A, bitmap B, bitmap C);
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extern bool bitmap_ior_and_compl (bitmap DST, bitmap A, bitmap B, bitmap C);
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/* A |= (B & ~C). Return true if A changes. */
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/* A |= (B & ~C). Return true if A changes. */
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extern bool bitmap_ior_and_compl_into (bitmap DST, bitmap B, bitmap C);
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extern bool bitmap_ior_and_compl_into (bitmap DST, bitmap B, bitmap C);
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/* Clear a single register in a register set. */
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/* Clear a single register in a register set. */
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extern void bitmap_clear_bit (bitmap, int);
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extern void bitmap_clear_bit (bitmap, int);
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/* Set a single register in a register set. */
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/* Set a single register in a register set. */
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extern void bitmap_set_bit (bitmap, int);
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extern void bitmap_set_bit (bitmap, int);
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/* Return true if a register is set in a register set. */
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/* Return true if a register is set in a register set. */
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extern int bitmap_bit_p (bitmap, int);
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extern int bitmap_bit_p (bitmap, int);
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/* Debug functions to print a bitmap linked list. */
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/* Debug functions to print a bitmap linked list. */
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extern void debug_bitmap (bitmap);
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extern void debug_bitmap (bitmap);
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extern void debug_bitmap_file (FILE *, bitmap);
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extern void debug_bitmap_file (FILE *, bitmap);
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/* Print a bitmap. */
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/* Print a bitmap. */
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extern void bitmap_print (FILE *, bitmap, const char *, const char *);
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extern void bitmap_print (FILE *, bitmap, const char *, const char *);
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/* Initialize and release a bitmap obstack. */
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/* Initialize and release a bitmap obstack. */
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extern void bitmap_obstack_initialize (bitmap_obstack *);
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extern void bitmap_obstack_initialize (bitmap_obstack *);
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extern void bitmap_obstack_release (bitmap_obstack *);
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extern void bitmap_obstack_release (bitmap_obstack *);
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/* Initialize a bitmap header. OBSTACK indicates the bitmap obstack
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/* Initialize a bitmap header. OBSTACK indicates the bitmap obstack
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to allocate from, NULL for GC'd bitmap. */
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to allocate from, NULL for GC'd bitmap. */
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static inline void
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static inline void
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bitmap_initialize (bitmap head, bitmap_obstack *obstack)
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bitmap_initialize (bitmap head, bitmap_obstack *obstack)
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{
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{
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head->first = head->current = NULL;
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head->first = head->current = NULL;
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head->obstack = obstack;
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head->obstack = obstack;
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}
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}
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/* Allocate and free bitmaps from obstack, malloc and gc'd memory. */
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/* Allocate and free bitmaps from obstack, malloc and gc'd memory. */
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extern bitmap bitmap_obstack_alloc (bitmap_obstack *obstack);
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extern bitmap bitmap_obstack_alloc (bitmap_obstack *obstack);
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extern bitmap bitmap_gc_alloc (void);
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extern bitmap bitmap_gc_alloc (void);
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extern void bitmap_obstack_free (bitmap);
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extern void bitmap_obstack_free (bitmap);
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/* A few compatibility/functions macros for compatibility with sbitmaps */
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/* A few compatibility/functions macros for compatibility with sbitmaps */
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#define dump_bitmap(file, bitmap) bitmap_print (file, bitmap, "", "\n")
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#define dump_bitmap(file, bitmap) bitmap_print (file, bitmap, "", "\n")
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#define bitmap_zero(a) bitmap_clear (a)
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#define bitmap_zero(a) bitmap_clear (a)
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extern unsigned bitmap_first_set_bit (bitmap);
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extern unsigned bitmap_first_set_bit (bitmap);
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/* Compute bitmap hash (for purposes of hashing etc.) */
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/* Compute bitmap hash (for purposes of hashing etc.) */
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extern hashval_t bitmap_hash(bitmap);
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extern hashval_t bitmap_hash(bitmap);
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/* Allocate a bitmap from a bit obstack. */
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/* Allocate a bitmap from a bit obstack. */
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#define BITMAP_ALLOC(OBSTACK) bitmap_obstack_alloc (OBSTACK)
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#define BITMAP_ALLOC(OBSTACK) bitmap_obstack_alloc (OBSTACK)
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/* Allocate a gc'd bitmap. */
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/* Allocate a gc'd bitmap. */
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#define BITMAP_GGC_ALLOC() bitmap_gc_alloc ()
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#define BITMAP_GGC_ALLOC() bitmap_gc_alloc ()
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/* Do any cleanup needed on a bitmap when it is no longer used. */
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/* Do any cleanup needed on a bitmap when it is no longer used. */
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#define BITMAP_FREE(BITMAP) \
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#define BITMAP_FREE(BITMAP) \
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((void)(bitmap_obstack_free (BITMAP), (BITMAP) = NULL))
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((void)(bitmap_obstack_free (BITMAP), (BITMAP) = NULL))
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/* Iterator for bitmaps. */
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/* Iterator for bitmaps. */
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typedef struct
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typedef struct
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{
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{
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/* Pointer to the current bitmap element. */
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/* Pointer to the current bitmap element. */
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bitmap_element *elt1;
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bitmap_element *elt1;
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/* Pointer to 2nd bitmap element when two are involved. */
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/* Pointer to 2nd bitmap element when two are involved. */
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bitmap_element *elt2;
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bitmap_element *elt2;
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/* Word within the current element. */
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/* Word within the current element. */
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unsigned word_no;
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unsigned word_no;
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/* Contents of the actually processed word. When finding next bit
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/* Contents of the actually processed word. When finding next bit
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it is shifted right, so that the actual bit is always the least
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it is shifted right, so that the actual bit is always the least
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significant bit of ACTUAL. */
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significant bit of ACTUAL. */
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BITMAP_WORD bits;
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BITMAP_WORD bits;
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} bitmap_iterator;
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} bitmap_iterator;
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/* Initialize a single bitmap iterator. START_BIT is the first bit to
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/* Initialize a single bitmap iterator. START_BIT is the first bit to
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iterate from. */
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iterate from. */
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static inline void
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static inline void
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bmp_iter_set_init (bitmap_iterator *bi, bitmap map,
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bmp_iter_set_init (bitmap_iterator *bi, bitmap map,
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unsigned start_bit, unsigned *bit_no)
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unsigned start_bit, unsigned *bit_no)
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{
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{
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bi->elt1 = map->first;
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bi->elt1 = map->first;
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bi->elt2 = NULL;
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bi->elt2 = NULL;
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/* Advance elt1 until it is not before the block containing start_bit. */
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/* Advance elt1 until it is not before the block containing start_bit. */
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while (1)
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while (1)
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{
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{
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if (!bi->elt1)
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if (!bi->elt1)
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{
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{
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bi->elt1 = &bitmap_zero_bits;
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bi->elt1 = &bitmap_zero_bits;
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break;
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break;
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}
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}
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if (bi->elt1->indx >= start_bit / BITMAP_ELEMENT_ALL_BITS)
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if (bi->elt1->indx >= start_bit / BITMAP_ELEMENT_ALL_BITS)
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break;
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break;
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bi->elt1 = bi->elt1->next;
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bi->elt1 = bi->elt1->next;
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}
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}
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/* We might have gone past the start bit, so reinitialize it. */
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/* We might have gone past the start bit, so reinitialize it. */
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if (bi->elt1->indx != start_bit / BITMAP_ELEMENT_ALL_BITS)
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if (bi->elt1->indx != start_bit / BITMAP_ELEMENT_ALL_BITS)
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start_bit = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
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start_bit = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
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/* Initialize for what is now start_bit. */
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/* Initialize for what is now start_bit. */
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bi->word_no = start_bit / BITMAP_WORD_BITS % BITMAP_ELEMENT_WORDS;
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bi->word_no = start_bit / BITMAP_WORD_BITS % BITMAP_ELEMENT_WORDS;
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bi->bits = bi->elt1->bits[bi->word_no];
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bi->bits = bi->elt1->bits[bi->word_no];
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bi->bits >>= start_bit % BITMAP_WORD_BITS;
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bi->bits >>= start_bit % BITMAP_WORD_BITS;
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/* If this word is zero, we must make sure we're not pointing at the
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/* If this word is zero, we must make sure we're not pointing at the
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first bit, otherwise our incrementing to the next word boundary
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first bit, otherwise our incrementing to the next word boundary
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will fail. It won't matter if this increment moves us into the
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will fail. It won't matter if this increment moves us into the
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next word. */
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next word. */
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start_bit += !bi->bits;
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start_bit += !bi->bits;
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*bit_no = start_bit;
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*bit_no = start_bit;
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}
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}
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/* Initialize an iterator to iterate over the intersection of two
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/* Initialize an iterator to iterate over the intersection of two
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bitmaps. START_BIT is the bit to commence from. */
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bitmaps. START_BIT is the bit to commence from. */
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static inline void
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static inline void
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bmp_iter_and_init (bitmap_iterator *bi, bitmap map1, bitmap map2,
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bmp_iter_and_init (bitmap_iterator *bi, bitmap map1, bitmap map2,
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unsigned start_bit, unsigned *bit_no)
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unsigned start_bit, unsigned *bit_no)
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{
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{
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bi->elt1 = map1->first;
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bi->elt1 = map1->first;
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bi->elt2 = map2->first;
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bi->elt2 = map2->first;
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/* Advance elt1 until it is not before the block containing
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/* Advance elt1 until it is not before the block containing
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start_bit. */
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start_bit. */
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while (1)
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while (1)
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{
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{
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if (!bi->elt1)
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if (!bi->elt1)
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{
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{
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bi->elt2 = NULL;
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bi->elt2 = NULL;
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break;
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break;
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}
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}
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if (bi->elt1->indx >= start_bit / BITMAP_ELEMENT_ALL_BITS)
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if (bi->elt1->indx >= start_bit / BITMAP_ELEMENT_ALL_BITS)
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break;
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break;
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bi->elt1 = bi->elt1->next;
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bi->elt1 = bi->elt1->next;
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}
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}
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/* Advance elt2 until it is not before elt1. */
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/* Advance elt2 until it is not before elt1. */
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while (1)
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while (1)
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{
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{
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if (!bi->elt2)
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if (!bi->elt2)
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{
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{
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bi->elt1 = bi->elt2 = &bitmap_zero_bits;
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bi->elt1 = bi->elt2 = &bitmap_zero_bits;
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break;
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break;
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}
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}
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|
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if (bi->elt2->indx >= bi->elt1->indx)
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if (bi->elt2->indx >= bi->elt1->indx)
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break;
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break;
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bi->elt2 = bi->elt2->next;
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bi->elt2 = bi->elt2->next;
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}
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}
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/* If we're at the same index, then we have some intersecting bits. */
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/* If we're at the same index, then we have some intersecting bits. */
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if (bi->elt1->indx == bi->elt2->indx)
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if (bi->elt1->indx == bi->elt2->indx)
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{
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{
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/* We might have advanced beyond the start_bit, so reinitialize
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/* We might have advanced beyond the start_bit, so reinitialize
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for that. */
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for that. */
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if (bi->elt1->indx != start_bit / BITMAP_ELEMENT_ALL_BITS)
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if (bi->elt1->indx != start_bit / BITMAP_ELEMENT_ALL_BITS)
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start_bit = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
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start_bit = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
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|
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bi->word_no = start_bit / BITMAP_WORD_BITS % BITMAP_ELEMENT_WORDS;
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bi->word_no = start_bit / BITMAP_WORD_BITS % BITMAP_ELEMENT_WORDS;
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bi->bits = bi->elt1->bits[bi->word_no] & bi->elt2->bits[bi->word_no];
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bi->bits = bi->elt1->bits[bi->word_no] & bi->elt2->bits[bi->word_no];
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bi->bits >>= start_bit % BITMAP_WORD_BITS;
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bi->bits >>= start_bit % BITMAP_WORD_BITS;
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}
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}
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else
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else
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{
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{
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/* Otherwise we must immediately advance elt1, so initialize for
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/* Otherwise we must immediately advance elt1, so initialize for
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that. */
|
that. */
|
bi->word_no = BITMAP_ELEMENT_WORDS - 1;
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bi->word_no = BITMAP_ELEMENT_WORDS - 1;
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bi->bits = 0;
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bi->bits = 0;
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}
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}
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|
|
/* If this word is zero, we must make sure we're not pointing at the
|
/* If this word is zero, we must make sure we're not pointing at the
|
first bit, otherwise our incrementing to the next word boundary
|
first bit, otherwise our incrementing to the next word boundary
|
will fail. It won't matter if this increment moves us into the
|
will fail. It won't matter if this increment moves us into the
|
next word. */
|
next word. */
|
start_bit += !bi->bits;
|
start_bit += !bi->bits;
|
|
|
*bit_no = start_bit;
|
*bit_no = start_bit;
|
}
|
}
|
|
|
/* Initialize an iterator to iterate over the bits in MAP1 & ~MAP2.
|
/* Initialize an iterator to iterate over the bits in MAP1 & ~MAP2.
|
*/
|
*/
|
|
|
static inline void
|
static inline void
|
bmp_iter_and_compl_init (bitmap_iterator *bi, bitmap map1, bitmap map2,
|
bmp_iter_and_compl_init (bitmap_iterator *bi, bitmap map1, bitmap map2,
|
unsigned start_bit, unsigned *bit_no)
|
unsigned start_bit, unsigned *bit_no)
|
{
|
{
|
bi->elt1 = map1->first;
|
bi->elt1 = map1->first;
|
bi->elt2 = map2->first;
|
bi->elt2 = map2->first;
|
|
|
/* Advance elt1 until it is not before the block containing start_bit. */
|
/* Advance elt1 until it is not before the block containing start_bit. */
|
while (1)
|
while (1)
|
{
|
{
|
if (!bi->elt1)
|
if (!bi->elt1)
|
{
|
{
|
bi->elt1 = &bitmap_zero_bits;
|
bi->elt1 = &bitmap_zero_bits;
|
break;
|
break;
|
}
|
}
|
|
|
if (bi->elt1->indx >= start_bit / BITMAP_ELEMENT_ALL_BITS)
|
if (bi->elt1->indx >= start_bit / BITMAP_ELEMENT_ALL_BITS)
|
break;
|
break;
|
bi->elt1 = bi->elt1->next;
|
bi->elt1 = bi->elt1->next;
|
}
|
}
|
|
|
/* Advance elt2 until it is not before elt1. */
|
/* Advance elt2 until it is not before elt1. */
|
while (bi->elt2 && bi->elt2->indx < bi->elt1->indx)
|
while (bi->elt2 && bi->elt2->indx < bi->elt1->indx)
|
bi->elt2 = bi->elt2->next;
|
bi->elt2 = bi->elt2->next;
|
|
|
/* We might have advanced beyond the start_bit, so reinitialize for
|
/* We might have advanced beyond the start_bit, so reinitialize for
|
that. */
|
that. */
|
if (bi->elt1->indx != start_bit / BITMAP_ELEMENT_ALL_BITS)
|
if (bi->elt1->indx != start_bit / BITMAP_ELEMENT_ALL_BITS)
|
start_bit = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
start_bit = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
|
|
bi->word_no = start_bit / BITMAP_WORD_BITS % BITMAP_ELEMENT_WORDS;
|
bi->word_no = start_bit / BITMAP_WORD_BITS % BITMAP_ELEMENT_WORDS;
|
bi->bits = bi->elt1->bits[bi->word_no];
|
bi->bits = bi->elt1->bits[bi->word_no];
|
if (bi->elt2 && bi->elt1->indx == bi->elt2->indx)
|
if (bi->elt2 && bi->elt1->indx == bi->elt2->indx)
|
bi->bits &= ~bi->elt2->bits[bi->word_no];
|
bi->bits &= ~bi->elt2->bits[bi->word_no];
|
bi->bits >>= start_bit % BITMAP_WORD_BITS;
|
bi->bits >>= start_bit % BITMAP_WORD_BITS;
|
|
|
/* If this word is zero, we must make sure we're not pointing at the
|
/* If this word is zero, we must make sure we're not pointing at the
|
first bit, otherwise our incrementing to the next word boundary
|
first bit, otherwise our incrementing to the next word boundary
|
will fail. It won't matter if this increment moves us into the
|
will fail. It won't matter if this increment moves us into the
|
next word. */
|
next word. */
|
start_bit += !bi->bits;
|
start_bit += !bi->bits;
|
|
|
*bit_no = start_bit;
|
*bit_no = start_bit;
|
}
|
}
|
|
|
/* Advance to the next bit in BI. We don't advance to the next
|
/* Advance to the next bit in BI. We don't advance to the next
|
nonzero bit yet. */
|
nonzero bit yet. */
|
|
|
static inline void
|
static inline void
|
bmp_iter_next (bitmap_iterator *bi, unsigned *bit_no)
|
bmp_iter_next (bitmap_iterator *bi, unsigned *bit_no)
|
{
|
{
|
bi->bits >>= 1;
|
bi->bits >>= 1;
|
*bit_no += 1;
|
*bit_no += 1;
|
}
|
}
|
|
|
/* Advance to the next nonzero bit of a single bitmap, we will have
|
/* Advance to the next nonzero bit of a single bitmap, we will have
|
already advanced past the just iterated bit. Return true if there
|
already advanced past the just iterated bit. Return true if there
|
is a bit to iterate. */
|
is a bit to iterate. */
|
|
|
static inline bool
|
static inline bool
|
bmp_iter_set (bitmap_iterator *bi, unsigned *bit_no)
|
bmp_iter_set (bitmap_iterator *bi, unsigned *bit_no)
|
{
|
{
|
/* If our current word is nonzero, it contains the bit we want. */
|
/* If our current word is nonzero, it contains the bit we want. */
|
if (bi->bits)
|
if (bi->bits)
|
{
|
{
|
next_bit:
|
next_bit:
|
while (!(bi->bits & 1))
|
while (!(bi->bits & 1))
|
{
|
{
|
bi->bits >>= 1;
|
bi->bits >>= 1;
|
*bit_no += 1;
|
*bit_no += 1;
|
}
|
}
|
return true;
|
return true;
|
}
|
}
|
|
|
/* Round up to the word boundary. We might have just iterated past
|
/* Round up to the word boundary. We might have just iterated past
|
the end of the last word, hence the -1. It is not possible for
|
the end of the last word, hence the -1. It is not possible for
|
bit_no to point at the beginning of the now last word. */
|
bit_no to point at the beginning of the now last word. */
|
*bit_no = ((*bit_no + BITMAP_WORD_BITS - 1)
|
*bit_no = ((*bit_no + BITMAP_WORD_BITS - 1)
|
/ BITMAP_WORD_BITS * BITMAP_WORD_BITS);
|
/ BITMAP_WORD_BITS * BITMAP_WORD_BITS);
|
bi->word_no++;
|
bi->word_no++;
|
|
|
while (1)
|
while (1)
|
{
|
{
|
/* Find the next nonzero word in this elt. */
|
/* Find the next nonzero word in this elt. */
|
while (bi->word_no != BITMAP_ELEMENT_WORDS)
|
while (bi->word_no != BITMAP_ELEMENT_WORDS)
|
{
|
{
|
bi->bits = bi->elt1->bits[bi->word_no];
|
bi->bits = bi->elt1->bits[bi->word_no];
|
if (bi->bits)
|
if (bi->bits)
|
goto next_bit;
|
goto next_bit;
|
*bit_no += BITMAP_WORD_BITS;
|
*bit_no += BITMAP_WORD_BITS;
|
bi->word_no++;
|
bi->word_no++;
|
}
|
}
|
|
|
/* Advance to the next element. */
|
/* Advance to the next element. */
|
bi->elt1 = bi->elt1->next;
|
bi->elt1 = bi->elt1->next;
|
if (!bi->elt1)
|
if (!bi->elt1)
|
return false;
|
return false;
|
*bit_no = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
*bit_no = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
bi->word_no = 0;
|
bi->word_no = 0;
|
}
|
}
|
}
|
}
|
|
|
/* Advance to the next nonzero bit of an intersecting pair of
|
/* Advance to the next nonzero bit of an intersecting pair of
|
bitmaps. We will have already advanced past the just iterated bit.
|
bitmaps. We will have already advanced past the just iterated bit.
|
Return true if there is a bit to iterate. */
|
Return true if there is a bit to iterate. */
|
|
|
static inline bool
|
static inline bool
|
bmp_iter_and (bitmap_iterator *bi, unsigned *bit_no)
|
bmp_iter_and (bitmap_iterator *bi, unsigned *bit_no)
|
{
|
{
|
/* If our current word is nonzero, it contains the bit we want. */
|
/* If our current word is nonzero, it contains the bit we want. */
|
if (bi->bits)
|
if (bi->bits)
|
{
|
{
|
next_bit:
|
next_bit:
|
while (!(bi->bits & 1))
|
while (!(bi->bits & 1))
|
{
|
{
|
bi->bits >>= 1;
|
bi->bits >>= 1;
|
*bit_no += 1;
|
*bit_no += 1;
|
}
|
}
|
return true;
|
return true;
|
}
|
}
|
|
|
/* Round up to the word boundary. We might have just iterated past
|
/* Round up to the word boundary. We might have just iterated past
|
the end of the last word, hence the -1. It is not possible for
|
the end of the last word, hence the -1. It is not possible for
|
bit_no to point at the beginning of the now last word. */
|
bit_no to point at the beginning of the now last word. */
|
*bit_no = ((*bit_no + BITMAP_WORD_BITS - 1)
|
*bit_no = ((*bit_no + BITMAP_WORD_BITS - 1)
|
/ BITMAP_WORD_BITS * BITMAP_WORD_BITS);
|
/ BITMAP_WORD_BITS * BITMAP_WORD_BITS);
|
bi->word_no++;
|
bi->word_no++;
|
|
|
while (1)
|
while (1)
|
{
|
{
|
/* Find the next nonzero word in this elt. */
|
/* Find the next nonzero word in this elt. */
|
while (bi->word_no != BITMAP_ELEMENT_WORDS)
|
while (bi->word_no != BITMAP_ELEMENT_WORDS)
|
{
|
{
|
bi->bits = bi->elt1->bits[bi->word_no] & bi->elt2->bits[bi->word_no];
|
bi->bits = bi->elt1->bits[bi->word_no] & bi->elt2->bits[bi->word_no];
|
if (bi->bits)
|
if (bi->bits)
|
goto next_bit;
|
goto next_bit;
|
*bit_no += BITMAP_WORD_BITS;
|
*bit_no += BITMAP_WORD_BITS;
|
bi->word_no++;
|
bi->word_no++;
|
}
|
}
|
|
|
/* Advance to the next identical element. */
|
/* Advance to the next identical element. */
|
do
|
do
|
{
|
{
|
/* Advance elt1 while it is less than elt2. We always want
|
/* Advance elt1 while it is less than elt2. We always want
|
to advance one elt. */
|
to advance one elt. */
|
do
|
do
|
{
|
{
|
bi->elt1 = bi->elt1->next;
|
bi->elt1 = bi->elt1->next;
|
if (!bi->elt1)
|
if (!bi->elt1)
|
return false;
|
return false;
|
}
|
}
|
while (bi->elt1->indx < bi->elt2->indx);
|
while (bi->elt1->indx < bi->elt2->indx);
|
|
|
/* Advance elt2 to be no less than elt1. This might not
|
/* Advance elt2 to be no less than elt1. This might not
|
advance. */
|
advance. */
|
while (bi->elt2->indx < bi->elt1->indx)
|
while (bi->elt2->indx < bi->elt1->indx)
|
{
|
{
|
bi->elt2 = bi->elt2->next;
|
bi->elt2 = bi->elt2->next;
|
if (!bi->elt2)
|
if (!bi->elt2)
|
return false;
|
return false;
|
}
|
}
|
}
|
}
|
while (bi->elt1->indx != bi->elt2->indx);
|
while (bi->elt1->indx != bi->elt2->indx);
|
|
|
*bit_no = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
*bit_no = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
bi->word_no = 0;
|
bi->word_no = 0;
|
}
|
}
|
}
|
}
|
|
|
/* Advance to the next nonzero bit in the intersection of
|
/* Advance to the next nonzero bit in the intersection of
|
complemented bitmaps. We will have already advanced past the just
|
complemented bitmaps. We will have already advanced past the just
|
iterated bit. */
|
iterated bit. */
|
|
|
static inline bool
|
static inline bool
|
bmp_iter_and_compl (bitmap_iterator *bi, unsigned *bit_no)
|
bmp_iter_and_compl (bitmap_iterator *bi, unsigned *bit_no)
|
{
|
{
|
/* If our current word is nonzero, it contains the bit we want. */
|
/* If our current word is nonzero, it contains the bit we want. */
|
if (bi->bits)
|
if (bi->bits)
|
{
|
{
|
next_bit:
|
next_bit:
|
while (!(bi->bits & 1))
|
while (!(bi->bits & 1))
|
{
|
{
|
bi->bits >>= 1;
|
bi->bits >>= 1;
|
*bit_no += 1;
|
*bit_no += 1;
|
}
|
}
|
return true;
|
return true;
|
}
|
}
|
|
|
/* Round up to the word boundary. We might have just iterated past
|
/* Round up to the word boundary. We might have just iterated past
|
the end of the last word, hence the -1. It is not possible for
|
the end of the last word, hence the -1. It is not possible for
|
bit_no to point at the beginning of the now last word. */
|
bit_no to point at the beginning of the now last word. */
|
*bit_no = ((*bit_no + BITMAP_WORD_BITS - 1)
|
*bit_no = ((*bit_no + BITMAP_WORD_BITS - 1)
|
/ BITMAP_WORD_BITS * BITMAP_WORD_BITS);
|
/ BITMAP_WORD_BITS * BITMAP_WORD_BITS);
|
bi->word_no++;
|
bi->word_no++;
|
|
|
while (1)
|
while (1)
|
{
|
{
|
/* Find the next nonzero word in this elt. */
|
/* Find the next nonzero word in this elt. */
|
while (bi->word_no != BITMAP_ELEMENT_WORDS)
|
while (bi->word_no != BITMAP_ELEMENT_WORDS)
|
{
|
{
|
bi->bits = bi->elt1->bits[bi->word_no];
|
bi->bits = bi->elt1->bits[bi->word_no];
|
if (bi->elt2 && bi->elt2->indx == bi->elt1->indx)
|
if (bi->elt2 && bi->elt2->indx == bi->elt1->indx)
|
bi->bits &= ~bi->elt2->bits[bi->word_no];
|
bi->bits &= ~bi->elt2->bits[bi->word_no];
|
if (bi->bits)
|
if (bi->bits)
|
goto next_bit;
|
goto next_bit;
|
*bit_no += BITMAP_WORD_BITS;
|
*bit_no += BITMAP_WORD_BITS;
|
bi->word_no++;
|
bi->word_no++;
|
}
|
}
|
|
|
/* Advance to the next element of elt1. */
|
/* Advance to the next element of elt1. */
|
bi->elt1 = bi->elt1->next;
|
bi->elt1 = bi->elt1->next;
|
if (!bi->elt1)
|
if (!bi->elt1)
|
return false;
|
return false;
|
|
|
/* Advance elt2 until it is no less than elt1. */
|
/* Advance elt2 until it is no less than elt1. */
|
while (bi->elt2 && bi->elt2->indx < bi->elt1->indx)
|
while (bi->elt2 && bi->elt2->indx < bi->elt1->indx)
|
bi->elt2 = bi->elt2->next;
|
bi->elt2 = bi->elt2->next;
|
|
|
*bit_no = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
*bit_no = bi->elt1->indx * BITMAP_ELEMENT_ALL_BITS;
|
bi->word_no = 0;
|
bi->word_no = 0;
|
}
|
}
|
}
|
}
|
|
|
/* Loop over all bits set in BITMAP, starting with MIN and setting
|
/* Loop over all bits set in BITMAP, starting with MIN and setting
|
BITNUM to the bit number. ITER is a bitmap iterator. BITNUM
|
BITNUM to the bit number. ITER is a bitmap iterator. BITNUM
|
should be treated as a read-only variable as it contains loop
|
should be treated as a read-only variable as it contains loop
|
state. */
|
state. */
|
|
|
#define EXECUTE_IF_SET_IN_BITMAP(BITMAP, MIN, BITNUM, ITER) \
|
#define EXECUTE_IF_SET_IN_BITMAP(BITMAP, MIN, BITNUM, ITER) \
|
for (bmp_iter_set_init (&(ITER), (BITMAP), (MIN), &(BITNUM)); \
|
for (bmp_iter_set_init (&(ITER), (BITMAP), (MIN), &(BITNUM)); \
|
bmp_iter_set (&(ITER), &(BITNUM)); \
|
bmp_iter_set (&(ITER), &(BITNUM)); \
|
bmp_iter_next (&(ITER), &(BITNUM)))
|
bmp_iter_next (&(ITER), &(BITNUM)))
|
|
|
/* Loop over all the bits set in BITMAP1 & BITMAP2, starting with MIN
|
/* Loop over all the bits set in BITMAP1 & BITMAP2, starting with MIN
|
and setting BITNUM to the bit number. ITER is a bitmap iterator.
|
and setting BITNUM to the bit number. ITER is a bitmap iterator.
|
BITNUM should be treated as a read-only variable as it contains
|
BITNUM should be treated as a read-only variable as it contains
|
loop state. */
|
loop state. */
|
|
|
#define EXECUTE_IF_AND_IN_BITMAP(BITMAP1, BITMAP2, MIN, BITNUM, ITER) \
|
#define EXECUTE_IF_AND_IN_BITMAP(BITMAP1, BITMAP2, MIN, BITNUM, ITER) \
|
for (bmp_iter_and_init (&(ITER), (BITMAP1), (BITMAP2), (MIN), \
|
for (bmp_iter_and_init (&(ITER), (BITMAP1), (BITMAP2), (MIN), \
|
&(BITNUM)); \
|
&(BITNUM)); \
|
bmp_iter_and (&(ITER), &(BITNUM)); \
|
bmp_iter_and (&(ITER), &(BITNUM)); \
|
bmp_iter_next (&(ITER), &(BITNUM)))
|
bmp_iter_next (&(ITER), &(BITNUM)))
|
|
|
/* Loop over all the bits set in BITMAP1 & ~BITMAP2, starting with MIN
|
/* Loop over all the bits set in BITMAP1 & ~BITMAP2, starting with MIN
|
and setting BITNUM to the bit number. ITER is a bitmap iterator.
|
and setting BITNUM to the bit number. ITER is a bitmap iterator.
|
BITNUM should be treated as a read-only variable as it contains
|
BITNUM should be treated as a read-only variable as it contains
|
loop state. */
|
loop state. */
|
|
|
#define EXECUTE_IF_AND_COMPL_IN_BITMAP(BITMAP1, BITMAP2, MIN, BITNUM, ITER) \
|
#define EXECUTE_IF_AND_COMPL_IN_BITMAP(BITMAP1, BITMAP2, MIN, BITNUM, ITER) \
|
for (bmp_iter_and_compl_init (&(ITER), (BITMAP1), (BITMAP2), (MIN), \
|
for (bmp_iter_and_compl_init (&(ITER), (BITMAP1), (BITMAP2), (MIN), \
|
&(BITNUM)); \
|
&(BITNUM)); \
|
bmp_iter_and_compl (&(ITER), &(BITNUM)); \
|
bmp_iter_and_compl (&(ITER), &(BITNUM)); \
|
bmp_iter_next (&(ITER), &(BITNUM)))
|
bmp_iter_next (&(ITER), &(BITNUM)))
|
|
|
#endif /* GCC_BITMAP_H */
|
#endif /* GCC_BITMAP_H */
|
|
|
