src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/calc/IntegerLessThanNode.java

@@ -50,11 +50,11 @@
 import org.graalvm.compiler.options.OptionValues;
 
 @NodeInfo(shortName = "<")
 public final class IntegerLessThanNode extends IntegerLowerThanNode {
     public static final NodeClass<IntegerLessThanNode> TYPE = NodeClass.create(IntegerLessThanNode.class);
-    public static final LessThanOp OP = new LessThanOp();
+    private static final LessThanOp OP = new LessThanOp();
 
     public IntegerLessThanNode(ValueNode x, ValueNode y) {
         super(TYPE, x, y, OP);
         assert !x.getStackKind().isNumericFloat() && x.getStackKind() != JavaKind.Object;
         assert !y.getStackKind().isNumericFloat() && y.getStackKind() != JavaKind.Object;

@@ -201,10 +201,12 @@
                         return logic;
                     }
                 }
             }
 
+            if (forX.stamp() instanceof IntegerStamp) {
+                assert forY.stamp() instanceof IntegerStamp;
             int bits = ((IntegerStamp) forX.stamp()).getBits();
             assert ((IntegerStamp) forY.stamp()).getBits() == bits;
             long min = OP.minValue(bits);
             long xResidue = 0;
             ValueNode left = null;

@@ -247,10 +249,11 @@
                         }
                         return new IntegerBelowNode(left, right);
                     }
                 }
             }
+            }
             return null;
         }
 
         @Override
         protected Condition getCondition() {