java/15 : jdk.internal.vm.compiler/org/graalvm/compiler/nodes/calc/IsNullNode.class

IsNullNode
https://openjdk.java.net/
GPLv2 + Classpath Exception
public final class org.graalvm.compiler.nodes.calc.IsNullNode extends org.graalvm.compiler.nodes.UnaryOpLogicNode implements org.graalvm.compiler.nodes.spi.LIRLowerable, org.graalvm.compiler.nodes.spi.Virtualizable
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.nodes.calc.IsNullNode
  super_class: org.graalvm.compiler.nodes.UnaryOpLogicNode
{
  public static final org.graalvm.compiler.graph.NodeClass<org.graalvm.compiler.nodes.calc.IsNullNode> TYPE;
    descriptor: Lorg/graalvm/compiler/graph/NodeClass;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    Signature: Lorg/graalvm/compiler/graph/NodeClass<Lorg/graalvm/compiler/nodes/calc/IsNullNode;>;

  private final jdk.vm.ci.meta.JavaConstant nullConstant;
    descriptor: Ljdk/vm/ci/meta/JavaConstant;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 54
            ldc Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic org.graalvm.compiler.nodes.calc.IsNullNode.$assertionsDisabled:Z
         3: .line 56
            ldc Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            invokestatic org.graalvm.compiler.graph.NodeClass.create:(Ljava/lang/Class;)Lorg/graalvm/compiler/graph/NodeClass;
            putstatic org.graalvm.compiler.nodes.calc.IsNullNode.TYPE:Lorg/graalvm/compiler/graph/NodeClass;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>(org.graalvm.compiler.nodes.ValueNode, jdk.vm.ci.meta.JavaConstant);
    descriptor: (Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // org.graalvm.compiler.nodes.ValueNode object
        start local 2 // jdk.vm.ci.meta.JavaConstant nullConstant
         0: .line 64
            aload 0 /* this */
            getstatic org.graalvm.compiler.nodes.calc.IsNullNode.TYPE:Lorg/graalvm/compiler/graph/NodeClass;
            aload 1 /* object */
            invokespecial org.graalvm.compiler.nodes.UnaryOpLogicNode.<init>:(Lorg/graalvm/compiler/graph/NodeClass;Lorg/graalvm/compiler/nodes/ValueNode;)V
         1: .line 65
            aload 0 /* this */
            aload 2 /* nullConstant */
            putfield org.graalvm.compiler.nodes.calc.IsNullNode.nullConstant:Ljdk/vm/ci/meta/JavaConstant;
         2: .line 66
            getstatic org.graalvm.compiler.nodes.calc.IsNullNode.$assertionsDisabled:Z
            ifne 3
            aload 1 /* object */
            ifnonnull 3
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         3: .line 67
      StackMap locals: org.graalvm.compiler.nodes.calc.IsNullNode org.graalvm.compiler.nodes.ValueNode jdk.vm.ci.meta.JavaConstant
      StackMap stack:
            return
        end local 2 // jdk.vm.ci.meta.JavaConstant nullConstant
        end local 1 // org.graalvm.compiler.nodes.ValueNode object
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    4     0          this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    4     1        object  Lorg/graalvm/compiler/nodes/ValueNode;
            0    4     2  nullConstant  Ljdk/vm/ci/meta/JavaConstant;
    MethodParameters:
              Name  Flags
      object        
      nullConstant  

  public void <init>(org.graalvm.compiler.nodes.ValueNode);
    descriptor: (Lorg/graalvm/compiler/nodes/ValueNode;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // org.graalvm.compiler.nodes.ValueNode object
         0: .line 70
            aload 0 /* this */
            aload 1 /* object */
            getstatic jdk.vm.ci.meta.JavaConstant.NULL_POINTER:Ljdk/vm/ci/meta/JavaConstant;
            invokespecial org.graalvm.compiler.nodes.calc.IsNullNode.<init>:(Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)V
         1: .line 71
            aload 1 /* object */
            invokestatic org.graalvm.compiler.nodes.calc.IsNullNode.assertNonNarrow:(Lorg/graalvm/compiler/nodes/ValueNode;)V
         2: .line 72
            return
        end local 1 // org.graalvm.compiler.nodes.ValueNode object
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0    this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    3     1  object  Lorg/graalvm/compiler/nodes/ValueNode;
    MethodParameters:
        Name  Flags
      object  

  public jdk.vm.ci.meta.JavaConstant nullConstant();
    descriptor: ()Ljdk/vm/ci/meta/JavaConstant;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
         0: .line 75
            aload 0 /* this */
            getfield org.graalvm.compiler.nodes.calc.IsNullNode.nullConstant:Ljdk/vm/ci/meta/JavaConstant;
            areturn
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;

  public static org.graalvm.compiler.nodes.LogicNode create(org.graalvm.compiler.nodes.ValueNode);
    descriptor: (Lorg/graalvm/compiler/nodes/ValueNode;)Lorg/graalvm/compiler/nodes/LogicNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.nodes.ValueNode forValue
         0: .line 79
            aload 0 /* forValue */
            invokestatic org.graalvm.compiler.nodes.calc.IsNullNode.assertNonNarrow:(Lorg/graalvm/compiler/nodes/ValueNode;)V
         1: .line 80
            aconst_null
            aload 0 /* forValue */
            getstatic jdk.vm.ci.meta.JavaConstant.NULL_POINTER:Ljdk/vm/ci/meta/JavaConstant;
            invokestatic org.graalvm.compiler.nodes.calc.IsNullNode.canonicalized:(Lorg/graalvm/compiler/nodes/calc/IsNullNode;Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)Lorg/graalvm/compiler/nodes/LogicNode;
            areturn
        end local 0 // org.graalvm.compiler.nodes.ValueNode forValue
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0  forValue  Lorg/graalvm/compiler/nodes/ValueNode;
    MethodParameters:
          Name  Flags
      forValue  

  public static org.graalvm.compiler.nodes.LogicNode create(org.graalvm.compiler.nodes.ValueNode, jdk.vm.ci.meta.JavaConstant);
    descriptor: (Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)Lorg/graalvm/compiler/nodes/LogicNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.nodes.ValueNode forValue
        start local 1 // jdk.vm.ci.meta.JavaConstant nullConstant
         0: .line 84
            getstatic org.graalvm.compiler.nodes.calc.IsNullNode.$assertionsDisabled:Z
            ifne 1
            aload 1 /* nullConstant */
            invokeinterface jdk.vm.ci.meta.JavaConstant.isNull:()Z
            ifne 1
            new java.lang.AssertionError
            dup
            new java.lang.StringBuilder
            dup
            ldc "Null constant is not null: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* nullConstant */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         1: .line 85
      StackMap locals:
      StackMap stack:
            aconst_null
            aload 0 /* forValue */
            aload 1 /* nullConstant */
            invokestatic org.graalvm.compiler.nodes.calc.IsNullNode.canonicalized:(Lorg/graalvm/compiler/nodes/calc/IsNullNode;Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)Lorg/graalvm/compiler/nodes/LogicNode;
            areturn
        end local 1 // jdk.vm.ci.meta.JavaConstant nullConstant
        end local 0 // org.graalvm.compiler.nodes.ValueNode forValue
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    2     0      forValue  Lorg/graalvm/compiler/nodes/ValueNode;
            0    2     1  nullConstant  Ljdk/vm/ci/meta/JavaConstant;
    MethodParameters:
              Name  Flags
      forValue      
      nullConstant  

  private static void assertNonNarrow(org.graalvm.compiler.nodes.ValueNode);
    descriptor: (Lorg/graalvm/compiler/nodes/ValueNode;)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.nodes.ValueNode object
         0: .line 89
            getstatic org.graalvm.compiler.nodes.calc.IsNullNode.$assertionsDisabled:Z
            ifne 1
            aload 0 /* object */
            getstatic org.graalvm.compiler.nodes.NodeView.DEFAULT:Lorg/graalvm/compiler/nodes/NodeView;
            invokevirtual org.graalvm.compiler.nodes.ValueNode.stamp:(Lorg/graalvm/compiler/nodes/NodeView;)Lorg/graalvm/compiler/core/common/type/Stamp;
            instanceof org.graalvm.compiler.nodes.type.NarrowOopStamp
            ifeq 1
            new java.lang.AssertionError
            dup
            new java.lang.StringBuilder
            dup
            ldc "Value to compare against null is a NarrowOop"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* object */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         1: .line 90
      StackMap locals:
      StackMap stack:
            return
        end local 0 // org.graalvm.compiler.nodes.ValueNode object
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0  object  Lorg/graalvm/compiler/nodes/ValueNode;
    MethodParameters:
        Name  Flags
      object  

  public void generate(org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool);
    descriptor: (Lorg/graalvm/compiler/nodes/spi/NodeLIRBuilderTool;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool gen
         0: .line 95
            return
        end local 1 // org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool gen
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    1     1   gen  Lorg/graalvm/compiler/nodes/spi/NodeLIRBuilderTool;
    MethodParameters:
      Name  Flags
      gen   

  public boolean verify();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
         0: .line 99
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            ifnull 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack: org.graalvm.compiler.nodes.calc.IsNullNode
         1: iconst_0
      StackMap locals: org.graalvm.compiler.nodes.calc.IsNullNode
      StackMap stack: org.graalvm.compiler.nodes.calc.IsNullNode int
         2: ldc "is null input must not be null"
            iconst_0
            anewarray java.lang.Object
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.assertTrue:(ZLjava/lang/String;[Ljava/lang/Object;)Z
            pop
         3: .line 100
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            getstatic org.graalvm.compiler.nodes.NodeView.DEFAULT:Lorg/graalvm/compiler/nodes/NodeView;
            invokevirtual org.graalvm.compiler.nodes.ValueNode.stamp:(Lorg/graalvm/compiler/nodes/NodeView;)Lorg/graalvm/compiler/core/common/type/Stamp;
            invokevirtual org.graalvm.compiler.core.common.type.Stamp.isPointerStamp:()Z
            ldc "input must be a pointer not %s"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            getstatic org.graalvm.compiler.nodes.NodeView.DEFAULT:Lorg/graalvm/compiler/nodes/NodeView;
            invokevirtual org.graalvm.compiler.nodes.ValueNode.stamp:(Lorg/graalvm/compiler/nodes/NodeView;)Lorg/graalvm/compiler/core/common/type/Stamp;
            aastore
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.assertTrue:(ZLjava/lang/String;[Ljava/lang/Object;)Z
            pop
         4: .line 101
            aload 0 /* this */
            invokespecial org.graalvm.compiler.nodes.UnaryOpLogicNode.verify:()Z
            ireturn
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;

  public org.graalvm.compiler.nodes.ValueNode canonical(org.graalvm.compiler.graph.spi.CanonicalizerTool, org.graalvm.compiler.nodes.ValueNode);
    descriptor: (Lorg/graalvm/compiler/graph/spi/CanonicalizerTool;Lorg/graalvm/compiler/nodes/ValueNode;)Lorg/graalvm/compiler/nodes/ValueNode;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // org.graalvm.compiler.graph.spi.CanonicalizerTool tool
        start local 2 // org.graalvm.compiler.nodes.ValueNode forValue
         0: .line 106
            aload 0 /* this */
            aload 2 /* forValue */
            aload 0 /* this */
            getfield org.graalvm.compiler.nodes.calc.IsNullNode.nullConstant:Ljdk/vm/ci/meta/JavaConstant;
            invokestatic org.graalvm.compiler.nodes.calc.IsNullNode.canonicalized:(Lorg/graalvm/compiler/nodes/calc/IsNullNode;Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)Lorg/graalvm/compiler/nodes/LogicNode;
            areturn
        end local 2 // org.graalvm.compiler.nodes.ValueNode forValue
        end local 1 // org.graalvm.compiler.graph.spi.CanonicalizerTool tool
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0      this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    1     1      tool  Lorg/graalvm/compiler/graph/spi/CanonicalizerTool;
            0    1     2  forValue  Lorg/graalvm/compiler/nodes/ValueNode;
    MethodParameters:
          Name  Flags
      tool      
      forValue  

  private static org.graalvm.compiler.nodes.LogicNode canonicalized(org.graalvm.compiler.nodes.calc.IsNullNode, org.graalvm.compiler.nodes.ValueNode, jdk.vm.ci.meta.JavaConstant);
    descriptor: (Lorg/graalvm/compiler/nodes/calc/IsNullNode;Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)Lorg/graalvm/compiler/nodes/LogicNode;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=7, args_size=3
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode node
        start local 1 // org.graalvm.compiler.nodes.ValueNode forValue
        start local 2 // jdk.vm.ci.meta.JavaConstant forNullConstant
         0: .line 110
            aload 2 /* forNullConstant */
            astore 3 /* nullConstant */
        start local 3 // jdk.vm.ci.meta.JavaConstant nullConstant
         1: .line 111
            aload 1 /* forValue */
            astore 4 /* value */
        start local 4 // org.graalvm.compiler.nodes.ValueNode value
         2: .line 113
      StackMap locals: jdk.vm.ci.meta.JavaConstant org.graalvm.compiler.nodes.ValueNode
      StackMap stack:
            aload 4 /* value */
            invokestatic org.graalvm.compiler.nodes.type.StampTool.isPointerAlwaysNull:(Lorg/graalvm/compiler/nodes/ValueNode;)Z
            ifeq 4
         3: .line 114
            invokestatic org.graalvm.compiler.nodes.LogicConstantNode.tautology:()Lorg/graalvm/compiler/nodes/LogicConstantNode;
            areturn
         4: .line 115
      StackMap locals:
      StackMap stack:
            aload 4 /* value */
            invokestatic org.graalvm.compiler.nodes.type.StampTool.isPointerNonNull:(Lorg/graalvm/compiler/nodes/ValueNode;)Z
            ifeq 6
         5: .line 116
            invokestatic org.graalvm.compiler.nodes.LogicConstantNode.contradiction:()Lorg/graalvm/compiler/nodes/LogicConstantNode;
            areturn
         6: .line 119
      StackMap locals:
      StackMap stack:
            aload 4 /* value */
            instanceof org.graalvm.compiler.nodes.calc.ConvertNode
            ifeq 16
         7: .line 120
            aload 4 /* value */
            checkcast org.graalvm.compiler.nodes.calc.ConvertNode
            astore 5 /* convertNode */
        start local 5 // org.graalvm.compiler.nodes.calc.ConvertNode convertNode
         8: .line 121
            aload 5 /* convertNode */
            invokeinterface org.graalvm.compiler.nodes.calc.ConvertNode.mayNullCheckSkipConversion:()Z
            ifeq 11
         9: .line 122
            aload 5 /* convertNode */
            invokeinterface org.graalvm.compiler.nodes.calc.ConvertNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            astore 4 /* value */
        10: .line 123
            goto 2
        11: .line 129
      StackMap locals: org.graalvm.compiler.nodes.calc.ConvertNode
      StackMap stack:
            aload 4 /* value */
            instanceof org.graalvm.compiler.nodes.CompressionNode
            ifeq 16
        12: .line 130
            aload 4 /* value */
            checkcast org.graalvm.compiler.nodes.CompressionNode
            astore 6 /* compressionNode */
        start local 6 // org.graalvm.compiler.nodes.CompressionNode compressionNode
        13: .line 131
            aload 6 /* compressionNode */
            invokevirtual org.graalvm.compiler.nodes.CompressionNode.nullConstant:()Ljdk/vm/ci/meta/JavaConstant;
            astore 3 /* nullConstant */
        14: .line 132
            aload 6 /* compressionNode */
            invokevirtual org.graalvm.compiler.nodes.CompressionNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            astore 4 /* value */
        15: .line 133
            goto 2
        end local 6 // org.graalvm.compiler.nodes.CompressionNode compressionNode
        end local 5 // org.graalvm.compiler.nodes.calc.ConvertNode convertNode
        16: .line 139
      StackMap locals:
      StackMap stack:
            aload 0 /* node */
            ifnull 17
            aload 4 /* value */
            aload 1 /* forValue */
            if_acmpne 17
            aload 0 /* node */
            goto 18
      StackMap locals:
      StackMap stack:
        17: new org.graalvm.compiler.nodes.calc.IsNullNode
            dup
            aload 4 /* value */
            aload 3 /* nullConstant */
            invokespecial org.graalvm.compiler.nodes.calc.IsNullNode.<init>:(Lorg/graalvm/compiler/nodes/ValueNode;Ljdk/vm/ci/meta/JavaConstant;)V
      StackMap locals:
      StackMap stack: org.graalvm.compiler.nodes.calc.IsNullNode
        18: areturn
        end local 4 // org.graalvm.compiler.nodes.ValueNode value
        end local 3 // jdk.vm.ci.meta.JavaConstant nullConstant
        end local 2 // jdk.vm.ci.meta.JavaConstant forNullConstant
        end local 1 // org.graalvm.compiler.nodes.ValueNode forValue
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode node
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0   19     0             node  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0   19     1         forValue  Lorg/graalvm/compiler/nodes/ValueNode;
            0   19     2  forNullConstant  Ljdk/vm/ci/meta/JavaConstant;
            1   19     3     nullConstant  Ljdk/vm/ci/meta/JavaConstant;
            2   19     4            value  Lorg/graalvm/compiler/nodes/ValueNode;
            8   16     5      convertNode  Lorg/graalvm/compiler/nodes/calc/ConvertNode;
           13   16     6  compressionNode  Lorg/graalvm/compiler/nodes/CompressionNode;
    MethodParameters:
                 Name  Flags
      node             
      forValue         
      forNullConstant  

  public void virtualize(org.graalvm.compiler.nodes.spi.VirtualizerTool);
    descriptor: (Lorg/graalvm/compiler/nodes/spi/VirtualizerTool;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=2
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // org.graalvm.compiler.nodes.spi.VirtualizerTool tool
         0: .line 145
            aload 1 /* tool */
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            invokeinterface org.graalvm.compiler.nodes.spi.VirtualizerTool.getAlias:(Lorg/graalvm/compiler/nodes/ValueNode;)Lorg/graalvm/compiler/nodes/ValueNode;
            astore 2 /* alias */
        start local 2 // org.graalvm.compiler.nodes.ValueNode alias
         1: .line 146
            aload 0 /* this */
            aload 2 /* alias */
            getstatic org.graalvm.compiler.nodes.NodeView.DEFAULT:Lorg/graalvm/compiler/nodes/NodeView;
            invokevirtual org.graalvm.compiler.nodes.ValueNode.stamp:(Lorg/graalvm/compiler/nodes/NodeView;)Lorg/graalvm/compiler/core/common/type/Stamp;
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.tryFold:(Lorg/graalvm/compiler/core/common/type/Stamp;)Ljdk/vm/ci/meta/TriState;
            astore 3 /* fold */
        start local 3 // jdk.vm.ci.meta.TriState fold
         2: .line 147
            aload 3 /* fold */
            getstatic jdk.vm.ci.meta.TriState.UNKNOWN:Ljdk/vm/ci/meta/TriState;
            if_acmpeq 4
         3: .line 148
            aload 1 /* tool */
            aload 3 /* fold */
            invokevirtual jdk.vm.ci.meta.TriState.isTrue:()Z
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.graph:()Lorg/graalvm/compiler/nodes/StructuredGraph;
            invokestatic org.graalvm.compiler.nodes.LogicConstantNode.forBoolean:(ZLorg/graalvm/compiler/graph/Graph;)Lorg/graalvm/compiler/nodes/LogicConstantNode;
            invokeinterface org.graalvm.compiler.nodes.spi.VirtualizerTool.replaceWithValue:(Lorg/graalvm/compiler/nodes/ValueNode;)V
         4: .line 150
      StackMap locals: org.graalvm.compiler.nodes.ValueNode jdk.vm.ci.meta.TriState
      StackMap stack:
            return
        end local 3 // jdk.vm.ci.meta.TriState fold
        end local 2 // org.graalvm.compiler.nodes.ValueNode alias
        end local 1 // org.graalvm.compiler.nodes.spi.VirtualizerTool tool
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    5     1   tool  Lorg/graalvm/compiler/nodes/spi/VirtualizerTool;
            1    5     2  alias  Lorg/graalvm/compiler/nodes/ValueNode;
            2    5     3   fold  Ljdk/vm/ci/meta/TriState;
    MethodParameters:
      Name  Flags
      tool  

  public org.graalvm.compiler.core.common.type.Stamp getSucceedingStampForValue(boolean);
    descriptor: (Z)Lorg/graalvm/compiler/core/common/type/Stamp;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // boolean negated
         0: .line 155
            aload 0 /* this */
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.getValue:()Lorg/graalvm/compiler/nodes/ValueNode;
            getstatic org.graalvm.compiler.nodes.NodeView.DEFAULT:Lorg/graalvm/compiler/nodes/NodeView;
            invokevirtual org.graalvm.compiler.nodes.ValueNode.stamp:(Lorg/graalvm/compiler/nodes/NodeView;)Lorg/graalvm/compiler/core/common/type/Stamp;
            invokevirtual org.graalvm.compiler.core.common.type.Stamp.unrestricted:()Lorg/graalvm/compiler/core/common/type/Stamp;
            checkcast org.graalvm.compiler.core.common.type.AbstractPointerStamp
            astore 2 /* pointerStamp */
        start local 2 // org.graalvm.compiler.core.common.type.AbstractPointerStamp pointerStamp
         1: .line 156
            iload 1 /* negated */
            ifeq 2
            aload 2 /* pointerStamp */
            invokevirtual org.graalvm.compiler.core.common.type.AbstractPointerStamp.asNonNull:()Lorg/graalvm/compiler/core/common/type/AbstractPointerStamp;
            goto 3
      StackMap locals: org.graalvm.compiler.core.common.type.AbstractPointerStamp
      StackMap stack:
         2: aload 2 /* pointerStamp */
            invokevirtual org.graalvm.compiler.core.common.type.AbstractPointerStamp.asAlwaysNull:()Lorg/graalvm/compiler/core/common/type/Stamp;
      StackMap locals:
      StackMap stack: org.graalvm.compiler.core.common.type.Stamp
         3: areturn
        end local 2 // org.graalvm.compiler.core.common.type.AbstractPointerStamp pointerStamp
        end local 1 // boolean negated
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    4     0          this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    4     1       negated  Z
            1    4     2  pointerStamp  Lorg/graalvm/compiler/core/common/type/AbstractPointerStamp;
    MethodParameters:
         Name  Flags
      negated  

  public jdk.vm.ci.meta.TriState tryFold(org.graalvm.compiler.core.common.type.Stamp);
    descriptor: (Lorg/graalvm/compiler/core/common/type/Stamp;)Ljdk/vm/ci/meta/TriState;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=3, args_size=2
        start local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
        start local 1 // org.graalvm.compiler.core.common.type.Stamp valueStamp
         0: .line 161
            aload 1 /* valueStamp */
            instanceof org.graalvm.compiler.core.common.type.ObjectStamp
            ifeq 6
         1: .line 162
            aload 1 /* valueStamp */
            checkcast org.graalvm.compiler.core.common.type.ObjectStamp
            astore 2 /* objectStamp */
        start local 2 // org.graalvm.compiler.core.common.type.ObjectStamp objectStamp
         2: .line 163
            aload 2 /* objectStamp */
            invokevirtual org.graalvm.compiler.core.common.type.ObjectStamp.alwaysNull:()Z
            ifeq 4
         3: .line 164
            getstatic jdk.vm.ci.meta.TriState.TRUE:Ljdk/vm/ci/meta/TriState;
            areturn
         4: .line 165
      StackMap locals: org.graalvm.compiler.core.common.type.ObjectStamp
      StackMap stack:
            aload 2 /* objectStamp */
            invokevirtual org.graalvm.compiler.core.common.type.ObjectStamp.nonNull:()Z
            ifeq 6
         5: .line 166
            getstatic jdk.vm.ci.meta.TriState.FALSE:Ljdk/vm/ci/meta/TriState;
            areturn
        end local 2 // org.graalvm.compiler.core.common.type.ObjectStamp objectStamp
         6: .line 169
      StackMap locals:
      StackMap stack:
            getstatic jdk.vm.ci.meta.TriState.UNKNOWN:Ljdk/vm/ci/meta/TriState;
            areturn
        end local 1 // org.graalvm.compiler.core.common.type.Stamp valueStamp
        end local 0 // org.graalvm.compiler.nodes.calc.IsNullNode this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    7     0         this  Lorg/graalvm/compiler/nodes/calc/IsNullNode;
            0    7     1   valueStamp  Lorg/graalvm/compiler/core/common/type/Stamp;
            2    6     2  objectStamp  Lorg/graalvm/compiler/core/common/type/ObjectStamp;
    MethodParameters:
            Name  Flags
      valueStamp  

  public org.graalvm.compiler.graph.Node canonical(org.graalvm.compiler.graph.spi.CanonicalizerTool, org.graalvm.compiler.graph.Node);
    descriptor: (Lorg/graalvm/compiler/graph/spi/CanonicalizerTool;Lorg/graalvm/compiler/graph/Node;)Lorg/graalvm/compiler/graph/Node;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            aload 2
            checkcast org.graalvm.compiler.nodes.ValueNode
            invokevirtual org.graalvm.compiler.nodes.calc.IsNullNode.canonical:(Lorg/graalvm/compiler/graph/spi/CanonicalizerTool;Lorg/graalvm/compiler/nodes/ValueNode;)Lorg/graalvm/compiler/nodes/ValueNode;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "IsNullNode.java"
    RuntimeVisibleAnnotations: 
      org.graalvm.compiler.nodeinfo.NodeInfo(cycles = org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2:Lorg/graalvm/compiler/nodeinfo/NodeCycles;)
/

java/ 15/ jdk.internal.vm.compiler/org/graalvm/compiler/nodes/calc/IsNullNode.class
