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global.c (earlyclobber_regclass): Change the type to VEC(int,heap).

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* global.c (earlyclobber_regclass): Change the type to
	VEC(int,heap).
	(check_earlyclobber): Update uses of earlyclobber_regclass.
	(mark_reg_use_for_earlyclobber): Likewise.
	(calculate_local_reg_bb_info): Allocate and free
	earlyclobber_regclass using the VEC API.

From-SVN: r98922
This commit is contained in:
Kazu Hirata 2005-04-28 14:18:29 +00:00 • committed by Kazu Hirata
parent 781e1004f3
commit 60550c0c62
2 changed files with 46 additions and 21 deletions
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9
gcc/ChangeLog
View file

@ -1,3 +1,12 @@
2005-04-28 Kazu Hirata <kazu@cs.umass.edu>
* global.c (earlyclobber_regclass): Change the type to
VEC(int,heap).
(check_earlyclobber): Update uses of earlyclobber_regclass.
(mark_reg_use_for_earlyclobber): Likewise.
(calculate_local_reg_bb_info): Allocate and free
earlyclobber_regclass using the VEC API.
2005-04-28 Nathan Sidwell <nathan@codesourcery.com>
* tree-ssa-alias.c (push_fields_onto_fieldstack): Remove bogus

58
gcc/global.c
View file

@ -2098,7 +2098,10 @@ mark_reg_change (rtx reg, rtx setter, void *data)
/* Classes of registers which could be early clobbered in the current
insn. */
static varray_type earlyclobber_regclass;
DEF_VEC_P(int);
DEF_VEC_ALLOC_P(int,heap);
static VEC(int,heap) *earlyclobber_regclass;
/* This function finds and stores register classes that could be early
clobbered in INSN. If any earlyclobber classes are found, the function
@ -2112,7 +2115,7 @@ check_earlyclobber (rtx insn)
extract_insn (insn);
VARRAY_POP_ALL (earlyclobber_regclass);
VEC_truncate (int, earlyclobber_regclass, 0);
for (opno = 0; opno < recog_data.n_operands; opno++)
{
char c;
@ -2149,13 +2152,23 @@ check_earlyclobber (rtx insn)
case ',':
if (amp_p && class != NO_REGS)
{
int rc;
found = true;
for (i = VARRAY_ACTIVE_SIZE (earlyclobber_regclass) - 1;
i >= 0; i--)
if (VARRAY_INT (earlyclobber_regclass, i) == (int) class)
break;
if (i < 0)
VARRAY_PUSH_INT (earlyclobber_regclass, (int) class);
for (i = 0;
VEC_iterate (int, earlyclobber_regclass, i, rc);
i++)
{
if (rc == (int) class)
goto found_rc;
}
/* We use VEC_quick_push here because
earlyclobber_regclass holds no more than
N_REG_CLASSES elements. */
VEC_quick_push (int, earlyclobber_regclass, (int) class);
found_rc:
;
}
amp_p = false;
@ -2194,23 +2207,24 @@ mark_reg_use_for_earlyclobber (rtx *x, void *data ATTRIBUTE_UNUSED)
if (REG_P (*x) && REGNO (*x) >= FIRST_PSEUDO_REGISTER)
{
int rc;
regno = REGNO (*x);
if (bitmap_bit_p (bb_info->killed, regno)
|| bitmap_bit_p (bb_info->avloc, regno))
return 0;
pref_class = reg_preferred_class (regno);
alt_class = reg_alternate_class (regno);
for (i = VARRAY_ACTIVE_SIZE (earlyclobber_regclass) - 1; i >= 0; i--)
if (reg_classes_intersect_p (VARRAY_INT (earlyclobber_regclass, i),
pref_class)
|| (VARRAY_INT (earlyclobber_regclass, i) != NO_REGS
&& reg_classes_intersect_p (VARRAY_INT (earlyclobber_regclass,
i),
alt_class)))
{
bitmap_set_bit (bb_info->earlyclobber, regno);
break;
}
for (i = 0; VEC_iterate (int, earlyclobber_regclass, i, rc); i++)
{
if (reg_classes_intersect_p (rc, pref_class)
|| (rc != NO_REGS
&& reg_classes_intersect_p (rc, alt_class)))
{
bitmap_set_bit (bb_info->earlyclobber, regno);
break;
}
}
}
return 0;
}
@ -2232,8 +2246,9 @@ calculate_local_reg_bb_info (void)
basic_block bb;
rtx insn, bound;
VARRAY_INT_INIT (earlyclobber_regclass, 20,
"classes of registers early clobbered in an insn");
/* We know that earlyclobber_regclass holds no more than
N_REG_CLASSES elements. See check_earlyclobber. */
earlyclobber_regclass = VEC_alloc (int, heap, N_REG_CLASSES);
FOR_EACH_BB (bb)
{
bound = NEXT_INSN (BB_END (bb));
@ -2245,6 +2260,7 @@ calculate_local_reg_bb_info (void)
note_uses (&PATTERN (insn), mark_reg_use_for_earlyclobber_1, bb);
}
}
VEC_free (int, heap, earlyclobber_regclass);
}
/* The function sets up reverse post-order number of each basic