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

*** 33,45 ****
  import org.graalvm.compiler.graph.spi.SimplifierTool;
  import org.graalvm.compiler.nodeinfo.NodeInfo;
  import org.graalvm.compiler.nodes.AbstractBeginNode;
  import org.graalvm.compiler.nodes.FixedNode;
  import org.graalvm.compiler.nodes.FixedWithNextNode;
- import org.graalvm.compiler.nodes.GuardNode;
  import org.graalvm.compiler.nodes.ValueNode;
- import org.graalvm.compiler.nodes.calc.IsNullNode;
  import org.graalvm.compiler.nodes.memory.FixedAccessNode;
  import org.graalvm.compiler.nodes.spi.LIRLowerable;
  import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  import org.graalvm.compiler.nodes.spi.Virtualizable;
  import org.graalvm.compiler.nodes.spi.VirtualizerTool;
--- 33,43 ----
*** 85,99 ****
          if (tool.allUsagesAvailable() && hasNoUsages() && next() instanceof FixedAccessNode) {
              FixedAccessNode currentNext = (FixedAccessNode) next();
              if (currentNext.getGuard() == anchored) {
                  GraphUtil.removeFixedWithUnusedInputs(this);
                  return;
-             } else if (currentNext.getGuard() == null && anchored instanceof GuardNode && ((GuardNode) anchored).getCondition() instanceof IsNullNode) {
-                 // coalesce null check guards into subsequent read/write
-                 currentNext.setGuard((GuardingNode) anchored);
-                 tool.addToWorkList(next());
-                 return;
              }
          }
  
          if (anchored != null && (anchored.isConstant() || anchored instanceof FixedNode)) {
              // anchoring fixed nodes and constants is useless
--- 83,92 ----