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src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp

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@@ -93,13 +93,13 @@
       unregister_potential_barrier_node(n);
     }
   }
 }
 
-void ZBarrierSetC2::enqueue_useful_gc_barrier(Unique_Node_List &worklist, Node* node) const {
+void ZBarrierSetC2::enqueue_useful_gc_barrier(PhaseIterGVN* igvn, Node* node) const {
   if (node->is_LoadBarrier() && !node->as_LoadBarrier()->has_true_uses()) {
-    worklist.push(node);
+    igvn->_worklist.push(node);
   }
 }
 
 void ZBarrierSetC2::find_dominating_barriers(PhaseIterGVN& igvn) {
   // Look for dominating barriers on the same address only once all

@@ -108,11 +108,11 @@
   Compile* C = Compile::current();
   ZBarrierSetC2* bs = (ZBarrierSetC2*)BarrierSet::barrier_set()->barrier_set_c2();
   ZBarrierSetC2State* s = bs->state();
   if (s->load_barrier_count() >= 2) {
     Compile::TracePhase tp("idealLoop", &C->timers[Phase::_t_idealLoop]);
-    PhaseIdealLoop ideal_loop(igvn, true, false, true);
+    PhaseIdealLoop ideal_loop(igvn, LoopOptsZgcLastRound);
     if (C->major_progress()) C->print_method(PHASE_PHASEIDEALLOOP_ITERATIONS, 2);
   }
 }
 
 void ZBarrierSetC2::add_users_to_worklist(Unique_Node_List* worklist) const {
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