src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/MonitorSnippets.java

rev 56282 : [mq]: graal

@@ -111,10 +111,11 @@
 import org.graalvm.compiler.nodes.NodeView;
 import org.graalvm.compiler.nodes.ReturnNode;
 import org.graalvm.compiler.nodes.StructuredGraph;
 import org.graalvm.compiler.nodes.ValueNode;
 import org.graalvm.compiler.nodes.debug.DynamicCounterNode;
+import org.graalvm.compiler.nodes.extended.BranchProbabilityNode;
 import org.graalvm.compiler.nodes.extended.ForeignCallNode;
 import org.graalvm.compiler.nodes.extended.MembarNode;
 import org.graalvm.compiler.nodes.java.MethodCallTargetNode;
 import org.graalvm.compiler.nodes.java.MonitorExitNode;
 import org.graalvm.compiler.nodes.java.RawMonitorEnterNode;

@@ -472,11 +473,11 @@
      */
     @Snippet
     public static void monitorenterStub(Object object, @ConstantParameter int lockDepth, @ConstantParameter boolean trace) {
         verifyOop(object);
         incCounter();
-        if (object == null) {
+        if (BranchProbabilityNode.probability(BranchProbabilityNode.DEOPT_PROBABILITY, object == null)) {
             DeoptimizeNode.deopt(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.NullCheckException);
         }
         // BeginLockScope nodes do not read from object so a use of object
         // cannot float about the null check above
         final Word lock = beginLockScope(lockDepth);