src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/extended/FixedValueAnchorNode.java

*** 23,58 ****
  package org.graalvm.compiler.nodes.extended;
  
  import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
  import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
  
  import org.graalvm.compiler.graph.NodeClass;
  import org.graalvm.compiler.nodeinfo.NodeInfo;
  import org.graalvm.compiler.nodes.FixedWithNextNode;
  import org.graalvm.compiler.nodes.ValueNode;
  import org.graalvm.compiler.nodes.spi.LIRLowerable;
  import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  import org.graalvm.compiler.nodes.spi.ValueProxy;
  
  @NodeInfo(cycles = CYCLES_0, size = SIZE_0)
! public final class FixedValueAnchorNode extends FixedWithNextNode implements LIRLowerable, ValueProxy {
      public static final NodeClass<FixedValueAnchorNode> TYPE = NodeClass.create(FixedValueAnchorNode.class);
  
      @Input ValueNode object;
  
      public ValueNode object() {
          return object;
      }
  
      public FixedValueAnchorNode(ValueNode object) {
          super(TYPE, object.stamp());
          this.object = object;
      }
  
      @Override
      public boolean inferStamp() {
          return updateStamp(object.stamp());
      }
  
      @NodeIntrinsic
      public static native Object getObject(Object object);
  
--- 23,70 ----
  package org.graalvm.compiler.nodes.extended;
  
  import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
  import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
  
+ import org.graalvm.compiler.core.common.type.Stamp;
  import org.graalvm.compiler.graph.NodeClass;
  import org.graalvm.compiler.nodeinfo.NodeInfo;
  import org.graalvm.compiler.nodes.FixedWithNextNode;
  import org.graalvm.compiler.nodes.ValueNode;
  import org.graalvm.compiler.nodes.spi.LIRLowerable;
  import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  import org.graalvm.compiler.nodes.spi.ValueProxy;
  
  @NodeInfo(cycles = CYCLES_0, size = SIZE_0)
! public final class FixedValueAnchorNode extends FixedWithNextNode implements LIRLowerable, ValueProxy, GuardingNode {
      public static final NodeClass<FixedValueAnchorNode> TYPE = NodeClass.create(FixedValueAnchorNode.class);
  
      @Input ValueNode object;
+     private Stamp predefinedStamp;
  
      public ValueNode object() {
          return object;
      }
  
      public FixedValueAnchorNode(ValueNode object) {
          super(TYPE, object.stamp());
          this.object = object;
      }
  
+     public FixedValueAnchorNode(ValueNode object, Stamp predefinedStamp) {
+         super(TYPE, predefinedStamp);
+         this.object = object;
+         this.predefinedStamp = predefinedStamp;
+     }
+ 
      @Override
      public boolean inferStamp() {
+         if (predefinedStamp == null) {
              return updateStamp(object.stamp());
+         } else {
+             return false;
+         }
      }
  
      @NodeIntrinsic
      public static native Object getObject(Object object);
  
*** 64,69 ****
--- 76,86 ----
      @Override
      public ValueNode getOriginalNode() {
          return object;
      }
  
+     @Override
+     public GuardingNode getGuard() {
+         return this;
+     }
+ 
  }