https://www.graalvm.org/ 
public final class org.graalvm.compiler.truffle.runtime.OptimizedLoopNode extends com.oracle.truffle.api.nodes.LoopNode
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.truffle.runtime.OptimizedLoopNode
  super_class: com.oracle.truffle.api.nodes.LoopNode
{
  private com.oracle.truffle.api.nodes.RepeatingNode repeatingNode;
    descriptor: Lcom/oracle/truffle/api/nodes/RepeatingNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  void <init>(com.oracle.truffle.api.nodes.RepeatingNode);
    descriptor: (Lcom/oracle/truffle/api/nodes/RepeatingNode;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
        start local 1 // com.oracle.truffle.api.nodes.RepeatingNode repeatingNode
         0: .line 36
            aload 0 /* this */
            invokespecial com.oracle.truffle.api.nodes.LoopNode.<init>:()V
         1: .line 37
            aload 0 /* this */
            aload 1 /* repeatingNode */
            putfield org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.repeatingNode:Lcom/oracle/truffle/api/nodes/RepeatingNode;
         2: .line 38
            return
        end local 1 // com.oracle.truffle.api.nodes.RepeatingNode repeatingNode
        end local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    3     0           this  Lorg/graalvm/compiler/truffle/runtime/OptimizedLoopNode;
            0    3     1  repeatingNode  Lcom/oracle/truffle/api/nodes/RepeatingNode;
    MethodParameters:
               Name  Flags
      repeatingNode  

  public com.oracle.truffle.api.nodes.RepeatingNode getRepeatingNode();
    descriptor: ()Lcom/oracle/truffle/api/nodes/RepeatingNode;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
         0: .line 42
            aload 0 /* this */
            getfield org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.repeatingNode:Lcom/oracle/truffle/api/nodes/RepeatingNode;
            areturn
        end local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/truffle/runtime/OptimizedLoopNode;

  public void executeLoop(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 48
            aload 0 /* this */
            aload 1 /* frame */
            invokevirtual org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.execute:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
            pop
         1: .line 49
            return
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/graalvm/compiler/truffle/runtime/OptimizedLoopNode;
            0    2     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
    MethodParameters:
       Name  Flags
      frame  

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=6, args_size=2
        start local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 54
            iconst_0
            istore 3 /* loopCount */
        start local 3 // int loopCount
         1: .line 56
            goto 4
        start local 2 // java.lang.Object status
         2: .line 57
      StackMap locals: java.lang.Object int
      StackMap stack:
            invokestatic com.oracle.truffle.api.CompilerDirectives.inInterpreter:()Z
            ifne 3
            invokestatic org.graalvm.compiler.truffle.runtime.GraalCompilerDirectives.inFirstTier:()Z
            ifeq 4
         3: .line 58
      StackMap locals:
      StackMap stack:
            iinc 3 /* loopCount */ 1
        end local 2 // java.lang.Object status
         4: .line 56
      StackMap locals: org.graalvm.compiler.truffle.runtime.OptimizedLoopNode com.oracle.truffle.api.frame.VirtualFrame top int
      StackMap stack:
            aload 0 /* this */
            getfield org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.repeatingNode:Lcom/oracle/truffle/api/nodes/RepeatingNode;
            aload 0 /* this */
            getfield org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.repeatingNode:Lcom/oracle/truffle/api/nodes/RepeatingNode;
            aload 1 /* frame */
            invokeinterface com.oracle.truffle.api.nodes.RepeatingNode.executeRepeatingWithValue:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
            dup
            astore 2 /* status */
        start local 2 // java.lang.Object status
         5: invokeinterface com.oracle.truffle.api.nodes.RepeatingNode.shouldContinue:(Ljava/lang/Object;)Z
            ifne 2
         6: .line 61
            aload 2 /* status */
            astore 5
         7: .line 63
            aload 0 /* this */
            iload 3 /* loopCount */
            invokestatic org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.reportLoopCount:(Lcom/oracle/truffle/api/nodes/Node;I)V
         8: .line 61
            aload 5
            areturn
        end local 2 // java.lang.Object status
         9: .line 62
      StackMap locals:
      StackMap stack: java.lang.Throwable
            astore 4
        10: .line 63
            aload 0 /* this */
            iload 3 /* loopCount */
            invokestatic org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.reportLoopCount:(Lcom/oracle/truffle/api/nodes/Node;I)V
        11: .line 64
            aload 4
            athrow
        end local 3 // int loopCount
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // org.graalvm.compiler.truffle.runtime.OptimizedLoopNode this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   12     0       this  Lorg/graalvm/compiler/truffle/runtime/OptimizedLoopNode;
            0   12     1      frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            2    4     2     status  Ljava/lang/Object;
            5    9     2     status  Ljava/lang/Object;
            1   12     3  loopCount  I
      Exception table:
        from    to  target  type
           1     7       9  any
    MethodParameters:
       Name  Flags
      frame  

  static com.oracle.truffle.api.nodes.LoopNode create(com.oracle.truffle.api.nodes.RepeatingNode);
    descriptor: (Lcom/oracle/truffle/api/nodes/RepeatingNode;)Lcom/oracle/truffle/api/nodes/LoopNode;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.nodes.RepeatingNode repeatingNode
         0: .line 68
            new org.graalvm.compiler.truffle.runtime.OptimizedLoopNode
            dup
            aload 0 /* repeatingNode */
            invokespecial org.graalvm.compiler.truffle.runtime.OptimizedLoopNode.<init>:(Lcom/oracle/truffle/api/nodes/RepeatingNode;)V
            areturn
        end local 0 // com.oracle.truffle.api.nodes.RepeatingNode repeatingNode
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    1     0  repeatingNode  Lcom/oracle/truffle/api/nodes/RepeatingNode;
    MethodParameters:
               Name  Flags
      repeatingNode  
}
SourceFile: "OptimizedLoopNode.java"
InnerClasses:
  public abstract Child = com.oracle.truffle.api.nodes.Node$Child of com.oracle.truffle.api.nodes.Node