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loop.c (loop_ivs_free): New function.

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* loop.c (loop_ivs_free): New function.
	(strength_reduce): Break out from...

From-SVN: r38583
This commit is contained in:
Michael Hayes 2001-01-01 00:53:38 +00:00 committed by Michael Hayes
parent 14be28e5f4
commit b2735d9a75
2 changed files with 43 additions and 26 deletions
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5
gcc/ChangeLog
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@ -1,5 +1,10 @@
2001-01-01 Michael Hayes <mhayes@redhat.com>
* loop.c (loop_ivs_free): New function.
(strength_reduce): Break out from...
2001-01-01 Michael Hayes <mhayes@redhat.com>
* loop.h (struct iv): New.
(REG_IV_TYPE, REG_IV_CLASS, REG_INFO): Modify to use 'struct iv'.
(struct loop_ivs): Replace 'reg_iv_type', 'reg_iv_info',

64
gcc/loop.c
View File

@ -194,6 +194,7 @@ static void loop_givs_dead_check PARAMS((struct loop *, struct iv_class *));
static void loop_givs_reduce PARAMS((struct loop *, struct iv_class *));
static void loop_givs_rescan PARAMS((struct loop *, struct iv_class *,
rtx *, rtx));
static void loop_ivs_free PARAMS((struct loop *));
static void strength_reduce PARAMS ((struct loop *, int, int));
static void find_single_use_in_loop PARAMS ((rtx, rtx, varray_type));
static int valid_initial_value_p PARAMS ((rtx, rtx, int, rtx));
@ -4250,6 +4251,40 @@ loop_giv_reduce_benefit (loop, bl, v, test_reg)
}
/* Free IV structures for LOOP. */
static void
loop_ivs_free (loop)
struct loop *loop;
{
struct loop_ivs *ivs = LOOP_IVS (loop);
struct iv_class *iv = ivs->list;
free (ivs->regs);
while (iv)
{
struct iv_class *next = iv->next;
struct induction *induction;
struct induction *next_induction;
for (induction = iv->biv; induction; induction = next_induction)
{
next_induction = induction->next_iv;
free (induction);
}
for (induction = iv->giv; induction; induction = next_induction)
{
next_induction = induction->next_iv;
free (induction);
}
free (iv);
iv = next;
}
}
/* Perform strength reduction and induction variable elimination.
Pseudo registers created during this function will be beyond the
@ -4312,7 +4347,8 @@ strength_reduce (loop, insn_count, flags)
if (flags & LOOP_UNROLL)
unroll_loop (loop, insn_count, end_insert_before, 0);
goto egress;
loop_ivs_free (loop);
return;
}
/* Determine how BIVS are initialised by looking through pre-header
@ -4571,31 +4607,7 @@ strength_reduce (loop, insn_count, flags)
if (loop_dump_stream)
fprintf (loop_dump_stream, "\n");
egress:
free (ivs->regs);
{
struct iv_class *iv = ivs->list;
while (iv) {
struct iv_class *next = iv->next;
struct induction *induction;
struct induction *next_induction;
for (induction = iv->biv; induction; induction = next_induction)
{
next_induction = induction->next_iv;
free (induction);
}
for (induction = iv->giv; induction; induction = next_induction)
{
next_induction = induction->next_iv;
free (induction);
}
free (iv);
iv = next;
}
}
loop_ivs_free (loop);
if (reg_map)
free (reg_map);
}