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[Bug tree-optimization/57864] [4.7 Regression] ICE in bitmap_set_replace_value, at tree-ssa-pre.c:862
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 06 May 2014 13:27:35 +0000
- Subject: [Bug tree-optimization/57864] [4.7 Regression] ICE in bitmap_set_replace_value, at tree-ssa-pre.c:862
- Auto-submitted: auto-generated
- References: <bug-57864-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57864
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Caused by
static pre_expr
phi_translate_1 (pre_expr expr, bitmap_set_t set1, bitmap_set_t set2,
basic_block pred, basic_block phiblock)
{
...
case NAME:
{
...
if (TREE_CODE (def) == SSA_NAME)
def = VN_INFO (def)->valnum;
picking up VN inserted expressions. I re-wrote this as part of
2012-09-24 Richard Guenther <rguenther@suse.de>
* tree-ssa-pre.c (bitmap_find_leader, create_expression_by_pieces,
find_or_generate_expression): Remove dominating stmt argument.
(find_leader_in_sets, phi_translate_1, bitmap_find_leader,
create_component_ref_by_pieces_1, create_component_ref_by_pieces,
do_regular_insertion, do_partial_partial_insertion): Adjust.
(compute_avail): Do not set uids.
and that fixed it. I am going to try backporting that change in isolation.