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7068051: SIGSEGV in PhaseIdealLoop::build_loop_late_post

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Removed predicate cloning from loop peeling optimization and from split fall-in paths.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2011-07-29 09:16:29 -07:00
parent e30a679033
commit df8d608ac7
8 changed files with 33 additions and 138 deletions
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3
hotspot/src/share/vm/opto/loopnode.cpp
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@ -1167,9 +1167,8 @@ void IdealLoopTree::split_outer_loop( PhaseIdealLoop *phase ) {
outer = igvn.register_new_node_with_optimizer(outer, _head);
phase->set_created_loop_node();
Node* pred = phase->clone_loop_predicates(ctl, outer, true);
// Outermost loop falls into '_head' loop
_head->set_req(LoopNode::EntryControl, pred);
_head->set_req(LoopNode::EntryControl, outer);
_head->del_req(outer_idx);
// Split all the Phis up between '_head' loop and 'outer' loop.
for (DUIterator_Fast jmax, j = _head->fast_outs(jmax); j < jmax; j++) {