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gimple.c (gtc_visited, [...]): Remove.

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* gimple.c (gtc_visited, gtc_ob, type_pair_hash, type_pair_eq): Remove.
	(GIMPLE_TYPE_PAIR_SIZE): New macro.
	(type_pair_cache): New static var.
	(lookup_type_pair): Use fixed sized custom hash; make inline.
	(gtc_visit, gimple_types_compatible_p, gimple_register_type_1): Update
	calls of lookup_type_pair.
	(print_gimple_types_stats): Remove cache stats.
	(free_gimple_type_tables): Free type_pair_cache instead of gtc_visited
	and gtc_ob.

From-SVN: r173925
This commit is contained in:
Jan Hubicka 2011-05-19 23:49:10 +02:00 • committed by Jan Hubicka
parent 0955cf616c
commit a30726a434
2 changed files with 43 additions and 68 deletions
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12
gcc/ChangeLog
View file

@ -1,3 +1,15 @@
2011-05-19 Jan Hubicka <jh@suse.cz>
* gimple.c (gtc_visited, gtc_ob, type_pair_hash, type_pair_eq): Remove.
(GIMPLE_TYPE_PAIR_SIZE): New macro.
(type_pair_cache): New static var.
(lookup_type_pair): Use fixed sized custom hash; make inline.
(gtc_visit, gimple_types_compatible_p, gimple_register_type_1): Update
calls of lookup_type_pair.
(print_gimple_types_stats): Remove cache stats.
(free_gimple_type_tables): Free type_pair_cache instead of gtc_visited
and gtc_ob.
2011-05-19 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (option_override_internal): Enable TARGET_CMOVE

99
gcc/gimple.c
View file

@ -50,11 +50,6 @@ static GTY((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map))
static GTY((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map)))
htab_t canonical_type_hash_cache;
/* Global type comparison cache. This is by TYPE_UID for space efficiency
and thus cannot use and does not need GC. */
static htab_t gtc_visited;
static struct obstack gtc_ob;
/* All the tuples have their operand vector (if present) at the very bottom
of the structure. Therefore, the offset required to find the
operands vector the size of the structure minus the size of the 1
@ -3237,72 +3232,51 @@ struct type_pair_d
signed char same_p[2];
};
typedef struct type_pair_d *type_pair_t;
DEF_VEC_P(type_pair_t);
DEF_VEC_ALLOC_P(type_pair_t,heap);
/* Return a hash value for the type pair pointed-to by P. */
#define GIMPLE_TYPE_PAIR_SIZE 16381
struct type_pair_d *type_pair_cache;
static hashval_t
type_pair_hash (const void *p)
{
const struct type_pair_d *pair = (const struct type_pair_d *) p;
hashval_t val1 = pair->uid1;
hashval_t val2 = pair->uid2;
return iterative_hash_hashval_t (val1, val2);
}
/* Compare two type pairs pointed-to by P1 and P2. */
static int
type_pair_eq (const void *p1, const void *p2)
{
const struct type_pair_d *pair1 = (const struct type_pair_d *) p1;
const struct type_pair_d *pair2 = (const struct type_pair_d *) p2;
return (pair1->uid1 == pair2->uid1 && pair1->uid2 == pair2->uid2);
}
/* Lookup the pair of types T1 and T2 in *VISITED_P. Insert a new
entry if none existed. */
static type_pair_t
lookup_type_pair (tree t1, tree t2, htab_t *visited_p, struct obstack *ob_p)
static inline type_pair_t
lookup_type_pair (tree t1, tree t2)
{
struct type_pair_d pair;
type_pair_t p;
void **slot;
unsigned int index;
unsigned int uid1, uid2;
if (*visited_p == NULL)
{
*visited_p = htab_create (251, type_pair_hash, type_pair_eq, NULL);
gcc_obstack_init (ob_p);
}
if (type_pair_cache == NULL)
type_pair_cache = XCNEWVEC (struct type_pair_d, GIMPLE_TYPE_PAIR_SIZE);
if (TYPE_UID (t1) < TYPE_UID (t2))
{
pair.uid1 = TYPE_UID (t1);
pair.uid2 = TYPE_UID (t2);
uid1 = TYPE_UID (t1);
uid2 = TYPE_UID (t2);
}
else
{
pair.uid1 = TYPE_UID (t2);
pair.uid2 = TYPE_UID (t1);
uid1 = TYPE_UID (t2);
uid2 = TYPE_UID (t1);
}
slot = htab_find_slot (*visited_p, &pair, INSERT);
gcc_checking_assert (uid1 != uid2);
if (*slot)
p = *((type_pair_t *) slot);
else
{
p = XOBNEW (ob_p, struct type_pair_d);
p->uid1 = pair.uid1;
p->uid2 = pair.uid2;
p->same_p[0] = -2;
p->same_p[1] = -2;
*slot = (void *) p;
}
/* iterative_hash_hashval_t imply an function calls.
We know that UIDS are in limited range. */
index = ((((unsigned HOST_WIDE_INT)uid1 << HOST_BITS_PER_WIDE_INT / 2) + uid2)
% GIMPLE_TYPE_PAIR_SIZE);
if (type_pair_cache [index].uid1 == uid1
&& type_pair_cache [index].uid2 == uid2)
return &type_pair_cache[index];
return p;
type_pair_cache [index].uid1 = uid1;
type_pair_cache [index].uid2 = uid2;
type_pair_cache [index].same_p[0] = -2;
type_pair_cache [index].same_p[1] = -2;
return &type_pair_cache[index];
}
/* Per pointer state for the SCC finding. The on_sccstack flag
@ -3560,7 +3534,7 @@ gtc_visit (tree t1, tree t2,
return false;
/* Allocate a new cache entry for this comparison. */
p = lookup_type_pair (t1, t2, &gtc_visited, &gtc_ob);
p = lookup_type_pair (t1, t2);
if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1)
{
/* We have already decided whether T1 and T2 are the
@ -3972,7 +3946,7 @@ gimple_types_compatible_p (tree t1, tree t2)
/* If we've visited this type pair before (in the case of aggregates
with self-referential types), and we made a decision, return it. */
p = lookup_type_pair (t1, t2, &gtc_visited, &gtc_ob);
p = lookup_type_pair (t1, t2);
if (p->same_p[GTC_MERGE] == 0 || p->same_p[GTC_MERGE] == 1)
{
/* We have already decided whether T1 and T2 are the
@ -4967,16 +4941,6 @@ print_gimple_types_stats (void)
htab_collisions (canonical_type_hash_cache));
else
fprintf (stderr, "GIMPLE canonical type hash table is empty\n");
if (gtc_visited)
fprintf (stderr, "GIMPLE type comparison table: size %ld, %ld "
"elements, %ld searches, %ld collisions (ratio: %f)\n",
(long) htab_size (gtc_visited),
(long) htab_elements (gtc_visited),
(long) gtc_visited->searches,
(long) gtc_visited->collisions,
htab_collisions (gtc_visited));
else
fprintf (stderr, "GIMPLE type comparison table is empty\n");
}
/* Free the gimple type hashtables used for LTO type merging. */
@ -5008,11 +4972,10 @@ free_gimple_type_tables (void)
htab_delete (canonical_type_hash_cache);
canonical_type_hash_cache = NULL;
}
if (gtc_visited)
if (type_pair_cache)
{
htab_delete (gtc_visited);
obstack_free (&gtc_ob, NULL);
gtc_visited = NULL;
free (type_pair_cache);
type_pair_cache = NULL;
}
gimple_type_leader = NULL;
}