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[PATCH]: Stop gc'allocing worklist in tree-ssa-pre.c
- From: Daniel Berlin <dberlin at dberlin dot org>
- To: gcc-patches at gcc dot gnu dot org
- Date: Sun, 19 Sep 2004 13:03:13 -0400 (EDT)
- Subject: [PATCH]: Stop gc'allocing worklist in tree-ssa-pre.c
2004-09-18 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-pre.c (compute_antic_aux): Use malloc'd worklist, to avoid
generating useless garbage.
Index: tree-ssa-pre.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-ssa-pre.c,v
retrieving revision 2.37
diff -u -p -r2.37 tree-ssa-pre.c
--- tree-ssa-pre.c 19 Sep 2004 13:57:35 -0000 2.37
+++ tree-ssa-pre.c 19 Sep 2004 16:59:37 -0000
@@ -1098,6 +1101,8 @@ clean (value_set_t set)
}
}
+DEF_VEC_MALLOC_P (basic_block);
+
/* Compute the ANTIC set for BLOCK.
ANTIC_OUT[BLOCK] = intersection of ANTIC_IN[b] for all succ(BLOCK), if
@@ -1164,24 +1169,23 @@ compute_antic_aux (basic_block block)
them. */
else
{
- varray_type worklist;
+ VEC (basic_block) * worklist;
edge e;
size_t i;
basic_block bprime, first;
- VARRAY_BB_INIT (worklist, 1, "succ");
+ worklist = VEC_alloc (basic_block, 2);
e = block->succ;
while (e)
{
- VARRAY_PUSH_BB (worklist, e->dest);
+ VEC_safe_push (basic_block, worklist, e->dest);
e = e->succ_next;
}
- first = VARRAY_BB (worklist, 0);
+ first = VEC_index (basic_block, worklist, 0);
set_copy (ANTIC_OUT, ANTIC_IN (first));
- for (i = 1; i < VARRAY_ACTIVE_SIZE (worklist); i++)
+ for (i = 1; VEC_iterate (basic_block, worklist, i, bprime); i++)
{
- bprime = VARRAY_BB (worklist, i);
node = ANTIC_OUT->head;
while (node)
{
@@ -1193,7 +1197,7 @@ compute_antic_aux (basic_block block)
node = next;
}
}
- VARRAY_CLEAR (worklist);
+ VEC_free (basic_block, worklist);
}
/* Generate ANTIC_OUT - TMP_GEN */