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reginfo.c (struct subregs_of_mode_node): Remove.

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2010-12-09  Richard Guenther  <rguenther@suse.de>

	* reginfo.c (struct subregs_of_mode_node): Remove.
	(subregs_of_mode): Likewise.
	(som_hash): Likewise.
	(som_eq): Likewise.
	(invalid_mode_changes): New bitmap.
	(record_subregs_of_mode): Get subregs_of_mode argument.
	Fill in invalid_mode_changes bitmap.
	(find_subregs_of_mode): Get subregs_of_mode argument and pass
	it through.
	(init_subregs_of_mode): Adjust.
	(finish_subregs_of_mode): Likewise.
	(invalid_mode_change_p): Query invalid_mode_changes bitmap.

From-SVN: r167632
This commit is contained in:
Richard Guenther 2010-12-09 10:01:18 +00:00 • committed by Richard Biener
parent fa1fabcbbc
commit a6d1cd85ca
2 changed files with 46 additions and 70 deletions
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15
gcc/ChangeLog
View file

@ -1,3 +1,18 @@
2010-12-09 Richard Guenther <rguenther@suse.de>
* reginfo.c (struct subregs_of_mode_node): Remove.
(subregs_of_mode): Likewise.
(som_hash): Likewise.
(som_eq): Likewise.
(invalid_mode_changes): New bitmap.
(record_subregs_of_mode): Get subregs_of_mode argument.
Fill in invalid_mode_changes bitmap.
(find_subregs_of_mode): Get subregs_of_mode argument and pass
it through.
(init_subregs_of_mode): Adjust.
(finish_subregs_of_mode): Likewise.
(invalid_mode_change_p): Query invalid_mode_changes bitmap.
2010-12-09 Richard Guenther <rguenther@suse.de>
* ira.c (ira): Do not call finish_subregs_of_mode.

101
gcc/reginfo.c
View file

@ -1235,39 +1235,13 @@ reg_classes_intersect_p (reg_class_t c1, reg_class_t c2)
#ifdef CANNOT_CHANGE_MODE_CLASS
struct subregs_of_mode_node
{
unsigned int block;
unsigned char modes[MAX_MACHINE_MODE];
};
static htab_t subregs_of_mode;
static hashval_t
som_hash (const void *x)
{
const struct subregs_of_mode_node *const a =
(const struct subregs_of_mode_node *) x;
return a->block;
}
static int
som_eq (const void *x, const void *y)
{
const struct subregs_of_mode_node *const a =
(const struct subregs_of_mode_node *) x;
const struct subregs_of_mode_node *const b =
(const struct subregs_of_mode_node *) y;
return a->block == b->block;
}
static bitmap invalid_mode_changes;
static void
record_subregs_of_mode (rtx subreg)
record_subregs_of_mode (rtx subreg, bitmap subregs_of_mode)
{
struct subregs_of_mode_node dummy, *node;
enum machine_mode mode;
unsigned int regno;
void **slot;
if (!REG_P (SUBREG_REG (subreg)))
return;
@ -1278,41 +1252,41 @@ record_subregs_of_mode (rtx subreg)
if (regno < FIRST_PSEUDO_REGISTER)
return;
dummy.block = regno & -8;
slot = htab_find_slot_with_hash (subregs_of_mode, &dummy,
dummy.block, INSERT);
node = (struct subregs_of_mode_node *) *slot;
if (node == NULL)
if (bitmap_set_bit (subregs_of_mode,
regno * NUM_MACHINE_MODES + (unsigned int) mode))
{
node = XCNEW (struct subregs_of_mode_node);
node->block = regno & -8;
*slot = node;
unsigned int rclass;
for (rclass = 0; rclass < N_REG_CLASSES; rclass++)
if (!bitmap_bit_p (invalid_mode_changes,
regno * N_REG_CLASSES + rclass)
&& CANNOT_CHANGE_MODE_CLASS (PSEUDO_REGNO_MODE (regno),
mode, (enum reg_class) rclass))
bitmap_set_bit (invalid_mode_changes,
regno * N_REG_CLASSES + rclass);
}
node->modes[mode] |= 1 << (regno & 7);
}
/* Call record_subregs_of_mode for all the subregs in X. */
static void
find_subregs_of_mode (rtx x)
find_subregs_of_mode (rtx x, bitmap subregs_of_mode)
{
enum rtx_code code = GET_CODE (x);
const char * const fmt = GET_RTX_FORMAT (code);
int i;
if (code == SUBREG)
record_subregs_of_mode (x);
record_subregs_of_mode (x, subregs_of_mode);
/* Time for some deep diving. */
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
{
if (fmt[i] == 'e')
find_subregs_of_mode (XEXP (x, i));
find_subregs_of_mode (XEXP (x, i), subregs_of_mode);
else if (fmt[i] == 'E')
{
int j;
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
find_subregs_of_mode (XVECEXP (x, i, j));
find_subregs_of_mode (XVECEXP (x, i, j), subregs_of_mode);
}
}
}
@ -1322,50 +1296,37 @@ init_subregs_of_mode (void)
{
basic_block bb;
rtx insn;
bitmap_obstack srom_obstack;
bitmap subregs_of_mode;
if (subregs_of_mode)
htab_empty (subregs_of_mode);
else
subregs_of_mode = htab_create (100, som_hash, som_eq, free);
gcc_assert (invalid_mode_changes == NULL);
invalid_mode_changes = BITMAP_ALLOC (NULL);
bitmap_obstack_initialize (&srom_obstack);
subregs_of_mode = BITMAP_ALLOC (&srom_obstack);
FOR_EACH_BB (bb)
FOR_BB_INSNS (bb, insn)
if (NONDEBUG_INSN_P (insn))
find_subregs_of_mode (PATTERN (insn));
if (NONDEBUG_INSN_P (insn))
find_subregs_of_mode (PATTERN (insn), subregs_of_mode);
BITMAP_FREE (subregs_of_mode);
bitmap_obstack_release (&srom_obstack);
}
/* Return 1 if REGNO has had an invalid mode change in CLASS from FROM
mode. */
bool
invalid_mode_change_p (unsigned int regno,
enum reg_class rclass ATTRIBUTE_UNUSED)
enum reg_class rclass)
{
struct subregs_of_mode_node dummy, *node;
unsigned int to;
unsigned char mask;
enum machine_mode from = PSEUDO_REGNO_MODE (regno);
gcc_assert (subregs_of_mode);
dummy.block = regno & -8;
node = (struct subregs_of_mode_node *)
htab_find_with_hash (subregs_of_mode, &dummy, dummy.block);
if (node == NULL)
return false;
mask = 1 << (regno & 7);
for (to = VOIDmode; to < NUM_MACHINE_MODES; to++)
if (node->modes[to] & mask)
if (CANNOT_CHANGE_MODE_CLASS (from, (enum machine_mode) to, rclass))
return true;
return false;
return bitmap_bit_p (invalid_mode_changes,
regno * N_REG_CLASSES + (unsigned) rclass);
}
void
finish_subregs_of_mode (void)
{
htab_delete (subregs_of_mode);
subregs_of_mode = 0;
BITMAP_FREE (invalid_mode_changes);
}
#else
void