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cse.c (check_dependence_data): Delete.

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gcc/
	* cse.c (check_dependence_data): Delete.
	(check_dependence): Change from being a for_each_rtx callback to being
	a function that examines all subrtxes itself.  Don't handle null rtxes.
	(invalidate): Update call accordingly.

From-SVN: r214628
This commit is contained in:
Richard Sandiford 2014-08-28 06:22:29 +00:00 committed by Richard Sandiford
parent e89b312ed3
commit c992c06661
2 changed files with 20 additions and 21 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2014-08-28 Richard Sandiford <rdsandiford@googlemail.com>
* cse.c (check_dependence_data): Delete.
(check_dependence): Change from being a for_each_rtx callback to being
a function that examines all subrtxes itself. Don't handle null rtxes.
(invalidate): Update call accordingly.
2014-08-28 Richard Sandiford <rdsandiford@googlemail.com>
* cse.c: Include rtl-iter.h.

34
gcc/cse.c
View File

@ -600,7 +600,6 @@ static int check_for_label_ref (rtx *, void *);
extern void dump_class (struct table_elt*);
static void get_cse_reg_info_1 (unsigned int regno);
static struct cse_reg_info * get_cse_reg_info (unsigned int regno);
static int check_dependence (rtx *, void *);
static void flush_hash_table (void);
static bool insn_live_p (rtx_insn *, int *);
@ -1816,22 +1815,20 @@ flush_hash_table (void)
}
}
/* Function called for each rtx to check whether an anti dependence exist. */
struct check_dependence_data
{
enum machine_mode mode;
rtx exp;
rtx addr;
};
/* Check whether an anti dependence exists between X and EXP. MODE and
ADDR are as for canon_anti_dependence. */
static int
check_dependence (rtx *x, void *data)
static bool
check_dependence (const_rtx x, rtx exp, enum machine_mode mode, rtx addr)
{
struct check_dependence_data *d = (struct check_dependence_data *) data;
if (*x && MEM_P (*x))
return canon_anti_dependence (*x, true, d->exp, d->mode, d->addr);
else
return 0;
subrtx_iterator::array_type array;
FOR_EACH_SUBRTX (iter, array, x, NONCONST)
{
const_rtx x = *iter;
if (MEM_P (x) && canon_anti_dependence (x, true, exp, mode, addr))
return true;
}
return false;
}
/* Remove from the hash table, or mark as invalid, all expressions whose
@ -1952,18 +1949,13 @@ invalidate (rtx x, enum machine_mode full_mode)
next = p->next_same_hash;
if (p->in_memory)
{
struct check_dependence_data d;
/* Just canonicalize the expression once;
otherwise each time we call invalidate
true_dependence will canonicalize the
expression again. */
if (!p->canon_exp)
p->canon_exp = canon_rtx (p->exp);
d.exp = x;
d.addr = addr;
d.mode = full_mode;
if (for_each_rtx (&p->canon_exp, check_dependence, &d))
if (check_dependence (p->canon_exp, x, full_mode, addr))
remove_from_table (p, i);
}
}