#include "config.h"
#include "system.h"
#include "rtl.h"
#include "flags.h"
#include "basic-block.h"
sbitmap
sbitmap_alloc (n_elms)
int n_elms;
{
int bytes, size, amt;
sbitmap bmap;
size = SBITMAP_SET_SIZE (n_elms);
bytes = size * sizeof (SBITMAP_ELT_TYPE);
amt = (sizeof (struct simple_bitmap_def)
+ bytes - sizeof (SBITMAP_ELT_TYPE));
bmap = (sbitmap) xmalloc (amt);
bmap->n_bits = n_elms;
bmap->size = size;
bmap->bytes = bytes;
return bmap;
}
sbitmap *
sbitmap_vector_alloc (n_vecs, n_elms)
int n_vecs, n_elms;
{
int i, bytes, offset, elm_bytes, size, amt, vector_bytes;
sbitmap *bitmap_vector;
size = SBITMAP_SET_SIZE (n_elms);
bytes = size * sizeof (SBITMAP_ELT_TYPE);
elm_bytes = (sizeof (struct simple_bitmap_def)
+ bytes - sizeof (SBITMAP_ELT_TYPE));
vector_bytes = n_vecs * sizeof (sbitmap *);
{
struct { char x; SBITMAP_ELT_TYPE y; } align;
int alignment = (char *) & align.y - & align.x;
vector_bytes = (vector_bytes + alignment - 1) & ~ (alignment - 1);
}
amt = vector_bytes + (n_vecs * elm_bytes);
bitmap_vector = (sbitmap *) xmalloc (amt);
for (i = 0, offset = vector_bytes;
i < n_vecs;
i++, offset += elm_bytes)
{
sbitmap b = (sbitmap) ((char *) bitmap_vector + offset);
bitmap_vector[i] = b;
b->n_bits = n_elms;
b->size = size;
b->bytes = bytes;
}
return bitmap_vector;
}
void
sbitmap_copy (dst, src)
sbitmap dst, src;
{
bcopy ((PTR) src->elms, (PTR) dst->elms,
sizeof (SBITMAP_ELT_TYPE) * dst->size);
}
void
sbitmap_zero (bmap)
sbitmap bmap;
{
bzero ((char *) bmap->elms, bmap->bytes);
}
void
sbitmap_ones (bmap)
sbitmap bmap;
{
memset (bmap->elms, -1, bmap->bytes);
}
void
sbitmap_vector_zero (bmap, n_vecs)
sbitmap *bmap;
int n_vecs;
{
int i;
for (i = 0; i < n_vecs; i++)
sbitmap_zero (bmap[i]);
}
void
sbitmap_vector_ones (bmap, n_vecs)
sbitmap *bmap;
int n_vecs;
{
int i;
for (i = 0; i < n_vecs; i++)
sbitmap_ones (bmap[i]);
}
int
sbitmap_union_of_diff (dst, a, b, c)
sbitmap dst, a, b, c;
{
int i,changed;
sbitmap_ptr dstp, ap, bp, cp;
changed = 0;
dstp = dst->elms;
ap = a->elms;
bp = b->elms;
cp = c->elms;
for (i = 0; i < dst->size; i++)
{
SBITMAP_ELT_TYPE tmp = *ap | (*bp & ~*cp);
if (*dstp != tmp)
changed = 1;
*dstp = tmp;
dstp++; ap++; bp++; cp++;
}
return changed;
}
void
sbitmap_not (dst, src)
sbitmap dst, src;
{
int i;
sbitmap_ptr dstp, ap;
dstp = dst->elms;
ap = src->elms;
for (i = 0; i < dst->size; i++)
{
SBITMAP_ELT_TYPE tmp = ~(*ap);
*dstp = tmp;
dstp++; ap++;
}
}
void
sbitmap_difference (dst, a, b)
sbitmap dst, a, b;
{
int i;
sbitmap_ptr dstp, ap, bp;
dstp = dst->elms;
ap = a->elms;
bp = b->elms;
for (i = 0; i < dst->size; i++)
*dstp++ = *ap++ & (~*bp++);
}
int
sbitmap_a_and_b (dst, a, b)
sbitmap dst, a, b;
{
int i,changed;
sbitmap_ptr dstp, ap, bp;
changed = 0;
dstp = dst->elms;
ap = a->elms;
bp = b->elms;
for (i = 0; i < dst->size; i++)
{
SBITMAP_ELT_TYPE tmp = *ap & *bp;
if (*dstp != tmp)
changed = 1;
*dstp = tmp;
dstp++; ap++; bp++;
}
return changed;
}
int
sbitmap_a_or_b (dst, a, b)
sbitmap dst, a, b;
{
int i,changed;
sbitmap_ptr dstp, ap, bp;
changed = 0;
dstp = dst->elms;
ap = a->elms;
bp = b->elms;
for (i = 0; i < dst->size; i++)
{
SBITMAP_ELT_TYPE tmp = *ap | *bp;
if (*dstp != tmp)
changed = 1;
*dstp = tmp;
dstp++; ap++; bp++;
}
return changed;
}
int
sbitmap_a_or_b_and_c (dst, a, b, c)
sbitmap dst, a, b, c;
{
int i,changed;
sbitmap_ptr dstp, ap, bp, cp;
changed = 0;
dstp = dst->elms;
ap = a->elms;
bp = b->elms;
cp = c->elms;
for (i = 0; i < dst->size; i++)
{
SBITMAP_ELT_TYPE tmp = *ap | (*bp & *cp);
if (*dstp != tmp)
changed = 1;
*dstp = tmp;
dstp++; ap++; bp++; cp++;
}
return changed;
}
int
sbitmap_a_and_b_or_c (dst, a, b, c)
sbitmap dst, a, b, c;
{
int i,changed;
sbitmap_ptr dstp, ap, bp, cp;
changed = 0;
dstp = dst->elms;
ap = a->elms;
bp = b->elms;
cp = c->elms;
for (i = 0; i < dst->size; i++)
{
SBITMAP_ELT_TYPE tmp = *ap & (*bp | *cp);
if (*dstp != tmp)
changed = 1;
*dstp = tmp;
dstp++; ap++; bp++; cp++;
}
return changed;
}
void
sbitmap_intersect_of_predsucc (dst, src, bb, pred_succ)
sbitmap dst;
sbitmap *src;
int bb;
int_list_ptr *pred_succ;
{
int_list_ptr ps;
int ps_bb;
int set_size = dst->size;
ps = pred_succ[bb];
if (ps == NULL)
{
sbitmap_ones (dst);
return;
}
for ( ; ps != NULL; ps = ps->next)
{
ps_bb = INT_LIST_VAL (ps);
if (ps_bb == ENTRY_BLOCK || ps_bb == EXIT_BLOCK)
continue;
sbitmap_copy (dst, src[ps_bb]);
break;
}
if (ps == NULL)
return;
for (ps = ps->next; ps != NULL; ps = ps->next)
{
int i;
sbitmap_ptr p,r;
ps_bb = INT_LIST_VAL (ps);
if (ps_bb == ENTRY_BLOCK || ps_bb == EXIT_BLOCK)
continue;
p = src[ps_bb]->elms;
r = dst->elms;
for (i = 0; i < set_size; i++)
*r++ &= *p++;
}
}
void
sbitmap_union_of_predsucc (dst, src, bb, pred_succ)
sbitmap dst;
sbitmap *src;
int bb;
int_list_ptr *pred_succ;
{
int_list_ptr ps;
int ps_bb;
int set_size = dst->size;
ps = pred_succ[bb];
if (ps == NULL)
{
sbitmap_zero (dst);
return;
}
for ( ; ps != NULL; ps = ps->next)
{
ps_bb = INT_LIST_VAL (ps);
if (ps_bb == ENTRY_BLOCK || ps_bb == EXIT_BLOCK)
continue;
sbitmap_copy (dst, src[ps_bb]);
break;
}
if (ps == NULL)
return;
for (ps = ps->next; ps != NULL; ps = ps->next)
{
int i;
sbitmap_ptr p,r;
ps_bb = INT_LIST_VAL (ps);
if (ps_bb == ENTRY_BLOCK || ps_bb == EXIT_BLOCK)
continue;
p = src[ps_bb]->elms;
r = dst->elms;
for (i = 0; i < set_size; i++)
*r++ |= *p++;
}
}
void
dump_sbitmap (file, bmap)
FILE *file;
sbitmap bmap;
{
int i,j,n;
int set_size = bmap->size;
int total_bits = bmap->n_bits;
fprintf (file, " ");
for (i = n = 0; i < set_size && n < total_bits; i++)
{
for (j = 0; j < SBITMAP_ELT_BITS && n < total_bits; j++, n++)
{
if (n != 0 && n % 10 == 0)
fprintf (file, " ");
fprintf (file, "%d", (bmap->elms[i] & (1L << j)) != 0);
}
}
fprintf (file, "\n");
}
void
dump_sbitmap_vector (file, title, subtitle, bmaps, n_maps)
FILE *file;
const char *title, *subtitle;
sbitmap *bmaps;
int n_maps;
{
int bb;
fprintf (file, "%s\n", title);
for (bb = 0; bb < n_maps; bb++)
{
fprintf (file, "%s %d\n", subtitle, bb);
dump_sbitmap (file, bmaps[bb]);
}
fprintf (file, "\n");
}