--- old/src/share/vm/opto/loopPredicate.cpp Tue Jul 26 12:22:04 2011 +++ new/src/share/vm/opto/loopPredicate.cpp Tue Jul 26 12:22:03 2011 @@ -817,6 +817,10 @@ cl = head->as_CountedLoop(); // do nothing for iteration-splitted loops if (!cl->is_normal_loop()) return false; + // Avoid RCE if Counted loop's test is '!='. + BoolTest::mask bt = cl->loopexit()->test_trip(); + if (bt != BoolTest::lt && bt != BoolTest::gt) + cl = NULL; } Node* entry = head->in(LoopNode::EntryControl); @@ -958,7 +962,7 @@ if (TraceLoopPredicate) tty->print_cr("lower bound check if: %d", lower_bound_iff->_idx); // Test the upper bound - Node* upper_bound_bol = rc_predicate(loop, ctrl, scale, offset, init, limit, stride, rng, true); + Node* upper_bound_bol = rc_predicate(loop, lower_bound_proj, scale, offset, init, limit, stride, rng, true); IfNode* upper_bound_iff = upper_bound_proj->in(0)->as_If(); _igvn.hash_delete(upper_bound_iff); upper_bound_iff->set_req(1, upper_bound_bol);