src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopPartialUnrollPhase.java

@@ -43,40 +43,41 @@
     @Override
     @SuppressWarnings("try")
     protected void run(StructuredGraph graph, PhaseContext context) {
         if (graph.hasLoops()) {
             HashSetNodeEventListener listener = new HashSetNodeEventListener();
-            try (Graph.NodeEventScope nes = graph.trackNodeEvents(listener)) {
                 boolean changed = true;
                 while (changed) {
+                changed = false;
+                try (Graph.NodeEventScope nes = graph.trackNodeEvents(listener)) {
                     LoopsData dataCounted = new LoopsData(graph);
                     dataCounted.detectedCountedLoops();
-                    changed = false;
                     for (LoopEx loop : dataCounted.countedLoops()) {
                         if (!LoopTransformations.isUnrollableLoop(loop)) {
                             continue;
                         }
                         if (getPolicies().shouldPartiallyUnroll(loop)) {
                             if (loop.loopBegin().isSimpleLoop()) {
                                 // First perform the pre/post transformation and do the partial
                                 // unroll when we come around again.
                                 LoopTransformations.insertPrePostLoops(loop, graph);
-                                changed = true;
                             } else {
-                                changed |= LoopTransformations.partialUnroll(loop, graph);
+                                LoopTransformations.partialUnroll(loop, graph);
                             }
+                            changed = true;
                         }
                     }
                     dataCounted.deleteUnusedNodes();
-                }
-            }
+
             if (!listener.getNodes().isEmpty()) {
                 canonicalizer.applyIncremental(graph, context, listener.getNodes());
                 listener.getNodes().clear();
             }
         }
     }
+        }
+    }
 
     @Override
     public boolean checkContract() {
         return false;
     }