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[tree-ssa][PATCH]: Make dom_children survive collection
- From: Daniel Berlin <dberlin at dberlin dot org>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 22 Oct 2003 17:55:36 -0400
- Subject: [tree-ssa][PATCH]: Make dom_children survive collection
Zdenek noticed this one, but i can't find his original patch, so i did
one.
This is necessary for a patch containing a set of speed ups and memory
reduction i'll be posting for SSAPRE soon.
I'm committing it as obvious, since it's 3 lines, obviously correct,
and does fix a few cases (none easily testcasible due to collection
requirements) where PRE had to redo dominators and they then got
collected.
--Dan
2003-10-22 Daniel Berlin <dberlin@dberlin.org>
* tree-flow-inline.h (add_dom_child): XMALLOC, not GGC_ALLOC,
the bitmap.
(clear_dom_children): XFREE the bitmap.
Index: tree-flow-inline.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/Attic/tree-flow-inline.h,v
retrieving revision 1.1.2.54
diff -u -3 -p -r1.1.2.54 tree-flow-inline.h
--- tree-flow-inline.h 13 Oct 2003 15:35:57 -0000 1.1.2.54
+++ tree-flow-inline.h 22 Oct 2003 21:49:46 -0000
@@ -327,7 +327,7 @@ add_dom_child (basic_block bb, basic_blo
{
bb_ann_t ann = bb_ann (bb);
if (ann->dom_children == NULL)
- ann->dom_children = BITMAP_GGC_ALLOC ();
+ ann->dom_children = BITMAP_XMALLOC ();
bitmap_set_bit (ann->dom_children, child_bb->index);
}
@@ -347,6 +347,8 @@ remove_dom_child (basic_block bb, basic_
static inline void
clear_dom_children (basic_block bb)
{
+ if (bb_ann (bb)->dom_children)
+ BITMAP_XFREE (bb_ann (bb)->dom_children);
bb_ann (bb)->dom_children = NULL;
}