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

*** 26,47 ****
  import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
  
  import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
  import org.graalvm.compiler.core.common.type.ArithmeticOpTable.UnaryOp.Neg;
  import org.graalvm.compiler.core.common.type.FloatStamp;
  import org.graalvm.compiler.graph.NodeClass;
  import org.graalvm.compiler.graph.spi.CanonicalizerTool;
  import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
  import org.graalvm.compiler.nodeinfo.NodeInfo;
  import org.graalvm.compiler.nodes.ValueNode;
  import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  
  /**
   * The {@code NegateNode} node negates its operand.
   */
  @NodeInfo(cycles = CYCLES_2, size = SIZE_1)
! public final class NegateNode extends UnaryArithmeticNode<Neg> implements NarrowableArithmeticNode {
  
      public static final NodeClass<NegateNode> TYPE = NodeClass.create(NegateNode.class);
  
      public NegateNode(ValueNode value) {
          super(TYPE, ArithmeticOpTable::getNeg, value);
--- 26,49 ----
  import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
  
  import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
  import org.graalvm.compiler.core.common.type.ArithmeticOpTable.UnaryOp.Neg;
  import org.graalvm.compiler.core.common.type.FloatStamp;
+ import org.graalvm.compiler.core.common.type.Stamp;
  import org.graalvm.compiler.graph.NodeClass;
  import org.graalvm.compiler.graph.spi.CanonicalizerTool;
  import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
  import org.graalvm.compiler.nodeinfo.NodeInfo;
  import org.graalvm.compiler.nodes.ValueNode;
  import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
+ import org.graalvm.compiler.nodes.spi.StampInverter;
  
  /**
   * The {@code NegateNode} node negates its operand.
   */
  @NodeInfo(cycles = CYCLES_2, size = SIZE_1)
! public final class NegateNode extends UnaryArithmeticNode<Neg> implements NarrowableArithmeticNode, StampInverter {
  
      public static final NodeClass<NegateNode> TYPE = NodeClass.create(NegateNode.class);
  
      public NegateNode(ValueNode value) {
          super(TYPE, ArithmeticOpTable::getNeg, value);
*** 65,70 ****
--- 67,77 ----
  
      @Override
      public void generate(NodeLIRBuilderTool nodeValueMap, ArithmeticLIRGeneratorTool gen) {
          nodeValueMap.setResult(this, gen.emitNegate(nodeValueMap.operand(getValue())));
      }
+ 
+     @Override
+     public Stamp invertStamp(Stamp outStamp) {
+         return getArithmeticOp().foldStamp(outStamp);
+     }
  }