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bitmap.c: Comment some functions; fiddle whitespace.

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* bitmap.c: Comment some functions; fiddle whitespace.
        (bitmap_free): Don't export.
        (bitmap_element_allocate): Use memset.
        * bitmap.h (bitmap_free): Don't declare.

From-SVN: r43940
This commit is contained in:
Richard Henderson 2001-07-11 10:34:48 -07:00 committed by Richard Henderson
parent 5a660bff9a
commit a615c28a76
3 changed files with 21 additions and 18 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2001-07-11 Richard Henderson <rth@redhat.com>
* bitmap.c: Comment some functions; fiddle whitespace.
(bitmap_free): Don't export.
(bitmap_element_allocate): Use memset.
* bitmap.h (bitmap_free): Don't declare.
2001-07-11 Daniel Berlin <dan@cgsoftware.com>
* gcse.c, lcm.c, sched-deps.c:

31
gcc/bitmap.c
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@ -39,7 +39,7 @@ static int bitmap_obstack_init = FALSE;
/* Global data */
bitmap_element bitmap_zero_bits; /* An element of all zero bits. */
bitmap_element *bitmap_free; /* Freelist of bitmap elements. */
static bitmap_element *bitmap_free; /* Freelist of bitmap elements. */
static void bitmap_element_free PARAMS ((bitmap, bitmap_element *));
static bitmap_element *bitmap_element_allocate PARAMS ((void));
@ -47,7 +47,8 @@ static int bitmap_element_zerop PARAMS ((bitmap_element *));
static void bitmap_element_link PARAMS ((bitmap, bitmap_element *));
static bitmap_element *bitmap_find_bit PARAMS ((bitmap, unsigned int));
/* Free a bitmap element */
/* Free a bitmap element. Since these are allocated off the
bitmap_obstack, "free" actually means "put onto the freelist". */
static INLINE void
bitmap_element_free (head, elt)
@ -81,9 +82,6 @@ static INLINE bitmap_element *
bitmap_element_allocate ()
{
bitmap_element *element;
#if BITMAP_ELEMENT_WORDS != 2
int i;
#endif
if (bitmap_free != 0)
{
@ -125,12 +123,7 @@ bitmap_element_allocate ()
sizeof (bitmap_element));
}
#if BITMAP_ELEMENT_WORDS == 2
element->bits[0] = element->bits[1] = 0;
#else
for (i = 0; i < BITMAP_ELEMENT_WORDS; i++)
element->bits[i] = 0;
#endif
memset (element->bits, 0, sizeof (element->bits));
return element;
}
@ -242,7 +235,7 @@ bitmap_clear (head)
head->first = head->current = 0;
}
/* Copy a bitmap to another bitmap */
/* Copy a bitmap to another bitmap. */
void
bitmap_copy (to, from)
@ -350,7 +343,6 @@ bitmap_clear_bit (head, bit)
}
}
/* Set a single bit in a bitmap. */
void
@ -374,7 +366,7 @@ bitmap_set_bit (head, bit)
else
ptr->bits[word_num] |= bit_val;
}
/* Return whether a bit is set within a bitmap. */
int
@ -397,6 +389,8 @@ bitmap_bit_p (head, bit)
return (ptr->bits[word_num] >> bit_num) & 1;
}
/* Return the bit number of the first set bit in the bitmap, or -1
if the bitmap is empty. */
int
bitmap_first_set_bit (a)
@ -448,6 +442,9 @@ bitmap_first_set_bit (a)
+ bit_num);
}
/* Return the bit number of the last set bit in the bitmap, or -1
if the bitmap is empty. */
int
bitmap_last_set_bit (a)
bitmap a;
@ -491,7 +488,7 @@ bitmap_last_set_bit (a)
if (word & 0xc)
word >>= 2, bit_num += 2;
if (word & 0x2)
word >>= 1, bit_num += 1;
bit_num += 1;
return (ptr->indx * BITMAP_ELEMENT_ALL_BITS
+ word_num * HOST_BITS_PER_WIDE_INT
@ -766,7 +763,7 @@ debug_bitmap_file (file, head)
fprintf (file, " }\n");
}
}
/* Function to be called from the debugger to print the contents
of a bitmap. */
@ -776,7 +773,7 @@ debug_bitmap (head)
{
debug_bitmap_file (stdout, head);
}
/* Function to print out the contents of a bitmap. Unlike debug_bitmap_file,
it does not print anything but the bits. */

1
gcc/bitmap.h
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@ -65,7 +65,6 @@ enum bitmap_bits {
};
/* Global data */
extern bitmap_element *bitmap_free; /* Freelist of bitmap elements */
extern bitmap_element bitmap_zero_bits; /* Zero bitmap element */
/* Clear a bitmap by freeing up the linked list. */