#include "rtl.h"
#include "flags.h"
#include "obstack.h"
+#include "ggc.h"
#include "bitmap.h"
/* Obstack to allocate bitmap elements from. */
/* Global data */
bitmap_element bitmap_zero_bits; /* An element of all zero bits. */
static bitmap_element *bitmap_free; /* Freelist of bitmap elements. */
+static GTY((deletable (""))) bitmap_element *bitmap_ggc_free;
+static void bitmap_elem_to_freelist PARAMS ((bitmap, bitmap_element *));
static void bitmap_element_free PARAMS ((bitmap, bitmap_element *));
-static bitmap_element *bitmap_element_allocate PARAMS ((void));
+static bitmap_element *bitmap_element_allocate PARAMS ((bitmap));
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));
\f
+/* Add ELEM to the appropriate freelist. */
+static INLINE void
+bitmap_elem_to_freelist (head, elt)
+ bitmap head;
+ bitmap_element *elt;
+{
+ if (head->using_obstack)
+ {
+ elt->next = bitmap_free;
+ bitmap_free = elt;
+ }
+ else
+ {
+ elt->next = bitmap_ggc_free;
+ bitmap_ggc_free = elt;
+ }
+}
+
/* Free a bitmap element. Since these are allocated off the
bitmap_obstack, "free" actually means "put onto the freelist". */
if (head->current)
head->indx = head->current->indx;
}
-
- elt->next = bitmap_free;
- bitmap_free = elt;
+ bitmap_elem_to_freelist (head, elt);
}
\f
/* Allocate a bitmap element. The bits are cleared, but nothing else is. */
static INLINE bitmap_element *
-bitmap_element_allocate ()
+bitmap_element_allocate (head)
+ bitmap head;
{
bitmap_element *element;
- if (bitmap_free != 0)
- {
- element = bitmap_free;
- bitmap_free = element->next;
- }
- else
+ if (head->using_obstack)
{
- /* We can't use gcc_obstack_init to initialize the obstack since
- print-rtl.c now calls bitmap functions, and bitmap is linked
- into the gen* functions. */
- if (!bitmap_obstack_init)
+ if (bitmap_free != 0)
{
- bitmap_obstack_init = TRUE;
-
- /* Let particular systems override the size of a chunk. */
+ element = bitmap_free;
+ bitmap_free = element->next;
+ }
+ else
+ {
+ /* We can't use gcc_obstack_init to initialize the obstack since
+ print-rtl.c now calls bitmap functions, and bitmap is linked
+ into the gen* functions. */
+ if (!bitmap_obstack_init)
+ {
+ bitmap_obstack_init = TRUE;
+
+ /* Let particular systems override the size of a chunk. */
#ifndef OBSTACK_CHUNK_SIZE
#define OBSTACK_CHUNK_SIZE 0
#endif
- /* Let them override the alloc and free routines too. */
+ /* Let them override the alloc and free routines too. */
#ifndef OBSTACK_CHUNK_ALLOC
#define OBSTACK_CHUNK_ALLOC xmalloc
#endif
#ifndef OBSTACK_CHUNK_FREE
#define OBSTACK_CHUNK_FREE free
#endif
-
+
#if !defined(__GNUC__) || (__GNUC__ < 2)
#define __alignof__(type) 0
#endif
-
- obstack_specify_allocation (&bitmap_obstack, OBSTACK_CHUNK_SIZE,
- __alignof__ (bitmap_element),
- (void *(*) PARAMS ((long))) OBSTACK_CHUNK_ALLOC,
- (void (*) PARAMS ((void *))) OBSTACK_CHUNK_FREE);
+
+ obstack_specify_allocation (&bitmap_obstack, OBSTACK_CHUNK_SIZE,
+ __alignof__ (bitmap_element),
+ (void *(*) PARAMS ((long))) OBSTACK_CHUNK_ALLOC,
+ (void (*) PARAMS ((void *))) OBSTACK_CHUNK_FREE);
+ }
+
+ element = (bitmap_element *) obstack_alloc (&bitmap_obstack,
+ sizeof (bitmap_element));
}
-
- element = (bitmap_element *) obstack_alloc (&bitmap_obstack,
- sizeof (bitmap_element));
+ }
+ else
+ {
+ if (bitmap_ggc_free != NULL)
+ {
+ element = bitmap_ggc_free;
+ bitmap_ggc_free = element->next;
+ }
+ else
+ element = ggc_alloc (sizeof (bitmap_element));
}
memset (element->bits, 0, sizeof (element->bits));
for (element = head->first; element != 0; element = next)
{
next = element->next;
- element->next = bitmap_free;
- bitmap_free = element;
+ bitmap_elem_to_freelist (head, element);
}
head->first = head->current = 0;
/* Copy elements in forward direction one at a time */
for (from_ptr = from->first; from_ptr; from_ptr = from_ptr->next)
{
- bitmap_element *to_elt = bitmap_element_allocate ();
+ bitmap_element *to_elt = bitmap_element_allocate (to);
to_elt->indx = from_ptr->indx;
if (ptr == 0)
{
- ptr = bitmap_element_allocate ();
+ ptr = bitmap_element_allocate (head);
ptr->indx = bit / BITMAP_ELEMENT_ALL_BITS;
ptr->bits[word_num] = bit_val;
bitmap_element_link (head, ptr);
changed = 1;
to_tmp = to_ptr;
to_ptr = to_ptr->next;
- to_tmp->next = bitmap_free;
- bitmap_free = to_tmp;
+ bitmap_elem_to_freelist (to, to_tmp);
}
if (to_ptr && to_ptr->indx == indx)
{
to_ptr = to_ptr->next;
}
else
- to_tmp = bitmap_element_allocate ();
+ to_tmp = bitmap_element_allocate (to);
/* Do the operation, and if any bits are set, link it into the
linked list. */
}
else
{
- to_tmp->next = bitmap_free;
- bitmap_free = to_tmp;
+ bitmap_elem_to_freelist (to, to_tmp);
}
}
changed = 1;
for (to_tmp = to_ptr; to_tmp->next ; to_tmp = to_tmp->next)
continue;
- to_tmp->next = bitmap_free;
- bitmap_free = to_ptr;
+ if (to->using_obstack)
+ {
+ to_tmp->next = bitmap_free;
+ bitmap_free = to_ptr;
+ }
+ else
+ {
+ to_tmp->next = bitmap_ggc_free;
+ bitmap_ggc_free = to_ptr;
+ }
}
#undef DOIT
/* Initialize a bitmap header. */
bitmap
-bitmap_initialize (head)
+bitmap_initialize (head, using_obstack)
bitmap head;
+ int using_obstack;
{
+ if (head == NULL && ! using_obstack)
+ head = ggc_alloc (sizeof (*head));
+
head->first = head->current = 0;
+ head->using_obstack = using_obstack;
return head;
}
});
fputs (suffix, file);
}
+
+#include "gt-bitmap.h"
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