X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/65d5286c129e07abb842509f78f9fa09456989db..c50befe6152b25faa8d872d3ac97812e1ae85f43:/lib/lbitset.c?ds=sidebyside diff --git a/lib/lbitset.c b/lib/lbitset.c index 6b0a50b8..d48a4a83 100644 --- a/lib/lbitset.c +++ b/lib/lbitset.c @@ -1,10 +1,11 @@ /* Functions to support link list bitsets. - Copyright (C) 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 2002-2004, 2006, 2009-2010 Free Software Foundation, + Inc. Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz). - This program is free software; you can redistribute it and/or modify + This program 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 of the License, or + the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -13,15 +14,12 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -*/ + along with this program. If not, see . */ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif +#include #include "lbitset.h" + #include "obstack.h" #include #include @@ -41,7 +39,7 @@ /* Number of words to use for each element. The larger the value the greater the size of the cache and the shorter the time to find a given bit but the more memory wasted for sparse bitsets and the longer the time - to search for set bits. + to search for set bits. The routines that dominate timing profiles are lbitset_elt_find and lbitset_elt_link, especially when accessing the bits randomly. */ @@ -54,7 +52,7 @@ typedef bitset_word lbitset_word; /* Number of bits stored in each element. */ #define LBITSET_ELT_BITS \ - ((unsigned) (LBITSET_ELT_WORDS * LBITSET_WORD_BITS)) + ((unsigned int) (LBITSET_ELT_WORDS * LBITSET_WORD_BITS)) /* Lbitset element. We use an array of bits for each element. These are linked together in a doubly-linked list. */ @@ -78,7 +76,7 @@ static struct obstack lbitset_obstack; static bool lbitset_obstack_init = false; static lbitset_elt *lbitset_free_list; /* Free list of bitset elements. */ -extern void debug_lbitset PARAMS ((bitset)); +extern void debug_lbitset (bitset); #define LBITSET_CURRENT1(X) \ ((lbitset_elt *) (void *) ((char *) (X) - offsetof (lbitset_elt, words))) @@ -121,15 +119,13 @@ lbitset_elt_alloc (void) #define OBSTACK_CHUNK_FREE free #endif -#if !defined(__GNUC__) || (__GNUC__ < 2) +#if ! defined __GNUC__ || __GNUC__ < 2 #define __alignof__(type) 0 #endif obstack_specify_allocation (&lbitset_obstack, OBSTACK_CHUNK_SIZE, __alignof__ (lbitset_elt), - (void *(*)PARAMS ((long))) OBSTACK_CHUNK_ALLOC, - (void (*)PARAMS ((void *))) OBSTACK_CHUNK_FREE); } @@ -365,6 +361,9 @@ lbitset_elt_find (bitset bset, bitset_windex windex, switch (mode) { + default: + abort (); + case LBITSET_FIND: return 0; @@ -378,9 +377,6 @@ lbitset_elt_find (bitset bset, bitset_windex windex, case LBITSET_SUBST: return &lbitset_zero_elts[0]; - - default: - abort (); } } @@ -883,26 +879,25 @@ lbitset_empty_p (bitset dst) /* Ensure that any unused bits within the last element are clear. */ static inline void -lbitset_unused_clear (dst) - bitset dst; +lbitset_unused_clear (bitset dst) { unsigned int last_bit; bitset_bindex n_bits; n_bits = BITSET_SIZE_ (dst); last_bit = n_bits % LBITSET_ELT_BITS; - + if (last_bit) { lbitset_elt *elt; bitset_windex windex; bitset_word *srcp; - + elt = LBITSET_TAIL (dst); srcp = elt->words; windex = n_bits / BITSET_WORD_BITS; - - srcp[windex - elt->index] &= ((bitset_word) 1 << last_bit) - 1; + + srcp[windex - elt->index] &= ((bitset_word) 1 << last_bit) - 1; windex++; for (; (windex - elt->index) < LBITSET_ELT_WORDS; windex++) @@ -1120,6 +1115,9 @@ lbitset_op3_cmp (bitset dst, bitset src1, bitset src2, enum bitset_ops op) dstp = dtmp->words; switch (op) { + default: + abort (); + case BITSET_OP_OR: for (i = 0; i < LBITSET_ELT_WORDS; i++, dstp++) { @@ -1171,9 +1169,6 @@ lbitset_op3_cmp (bitset dst, bitset src1, bitset src2, enum bitset_ops op) } } break; - - default: - abort (); } if (!lbitset_elt_zero_p (dtmp)) @@ -1391,7 +1386,7 @@ debug_lbitset (bitset bset) for (elt = LBITSET_HEAD (bset); elt; elt = elt->next) { - fprintf (stderr, "Elt %lu\n", (unsigned long) elt->index); + fprintf (stderr, "Elt %lu\n", (unsigned long int) elt->index); for (i = 0; i < LBITSET_ELT_WORDS; i++) { unsigned int j;