https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode extends com.oracle.truffle.js.nodes.function.JSBuiltinNode
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode
  super_class: com.oracle.truffle.js.nodes.function.JSBuiltinNode
{
  private static final java.lang.invoke.MethodHandle COMPILE_HANDLE;
    descriptor: Ljava/lang/invoke/MethodHandle;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=2, args_size=0
         0: .line 374
            aconst_null
            astore 0 /* compileHandle */
        start local 0 // java.lang.invoke.MethodHandle compileHandle
         1: .line 375
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            invokeinterface com.oracle.truffle.api.TruffleRuntime.getName:()Ljava/lang/String;
            ldc "Graal"
            invokevirtual java.lang.String.contains:(Ljava/lang/CharSequence;)Z
            ifeq 8
         2: .line 377
            ldc "com.oracle.graal.truffle.OptimizedCallTarget"
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            ldc Lcom/oracle/truffle/api/CallTarget;
            invokevirtual java.lang.Class.asSubclass:(Ljava/lang/Class;)Ljava/lang/Class;
            astore 1 /* optimizedCallTargetClass */
        start local 1 // java.lang.Class optimizedCallTargetClass
         3: .line 378
            invokestatic java.lang.invoke.MethodHandles.lookup:()Ljava/lang/invoke/MethodHandles$Lookup;
            aload 1 /* optimizedCallTargetClass */
            ldc "compile"
            getstatic java.lang.Void.TYPE:Ljava/lang/Class;
            invokestatic java.lang.invoke.MethodType.methodType:(Ljava/lang/Class;)Ljava/lang/invoke/MethodType;
            invokevirtual java.lang.invoke.MethodHandles$Lookup.findVirtual:(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/MethodHandle;
         4: .line 379
            getstatic java.lang.Void.TYPE:Ljava/lang/Class;
            ldc Lcom/oracle/truffle/api/CallTarget;
            invokestatic java.lang.invoke.MethodType.methodType:(Ljava/lang/Class;Ljava/lang/Class;)Ljava/lang/invoke/MethodType;
         5: .line 378
            invokevirtual java.lang.invoke.MethodHandle.asType:(Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/MethodHandle;
            astore 0 /* compileHandle */
        end local 1 // java.lang.Class optimizedCallTargetClass
         6: .line 380
            goto 8
      StackMap locals: java.lang.invoke.MethodHandle
      StackMap stack: java.lang.Exception
         7: pop
         8: .line 383
      StackMap locals:
      StackMap stack:
            aload 0 /* compileHandle */
            putstatic com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode.COMPILE_HANDLE:Ljava/lang/invoke/MethodHandle;
        end local 0 // java.lang.invoke.MethodHandle compileHandle
         9: .line 384
            return
      LocalVariableTable:
        Start  End  Slot                      Name  Signature
            1    9     0             compileHandle  Ljava/lang/invoke/MethodHandle;
            3    6     1  optimizedCallTargetClass  Ljava/lang/Class<+Lcom/oracle/truffle/api/CallTarget;>;
      Exception table:
        from    to  target  type
           2     6       7  Class java.lang.ClassNotFoundException
           2     6       7  Class java.lang.IllegalAccessException
           2     6       7  Class java.lang.NoSuchMethodException
           2     6       7  Class java.lang.SecurityException

  public void <init>(com.oracle.truffle.js.runtime.JSContext, com.oracle.truffle.js.nodes.function.JSBuiltin);
    descriptor: (Lcom/oracle/truffle/js/runtime/JSContext;Lcom/oracle/truffle/js/nodes/function/JSBuiltin;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode this
        start local 1 // com.oracle.truffle.js.runtime.JSContext context
        start local 2 // com.oracle.truffle.js.nodes.function.JSBuiltin builtin
         0: .line 350
            aload 0 /* this */
            aload 1 /* context */
            aload 2 /* builtin */
            invokespecial com.oracle.truffle.js.nodes.function.JSBuiltinNode.<init>:(Lcom/oracle/truffle/js/runtime/JSContext;Lcom/oracle/truffle/js/nodes/function/JSBuiltin;)V
         1: .line 351
            return
        end local 2 // com.oracle.truffle.js.nodes.function.JSBuiltin builtin
        end local 1 // com.oracle.truffle.js.runtime.JSContext context
        end local 0 // com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lcom/oracle/truffle/js/builtins/DebugBuiltins$DebugCompileFunctionNode;
            0    2     1  context  Lcom/oracle/truffle/js/runtime/JSContext;
            0    2     2  builtin  Lcom/oracle/truffle/js/nodes/function/JSBuiltin;
    MethodParameters:
         Name  Flags
      context  
      builtin  

  protected static boolean compileFunction(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x000c) ACC_PROTECTED, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // java.lang.Object fnObj
         0: .line 356
            aload 0 /* fnObj */
            invokestatic com.oracle.truffle.js.runtime.builtins.JSFunction.isJSFunction:(Ljava/lang/Object;)Z
            ifne 2
         1: .line 357
            aload 0 /* fnObj */
            invokestatic com.oracle.truffle.js.runtime.Errors.createTypeErrorNotAFunction:(Ljava/lang/Object;)Lcom/oracle/truffle/js/runtime/JSException;
            athrow
         2: .line 360
      StackMap locals:
      StackMap stack:
            aload 0 /* fnObj */
            checkcast com.oracle.truffle.api.object.DynamicObject
            invokestatic com.oracle.truffle.js.runtime.builtins.JSFunction.getCallTarget:(Lcom/oracle/truffle/api/object/DynamicObject;)Lcom/oracle/truffle/api/CallTarget;
            astore 1 /* callTarget */
        start local 1 // com.oracle.truffle.api.CallTarget callTarget
         3: .line 362
            getstatic com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode.COMPILE_HANDLE:Ljava/lang/invoke/MethodHandle;
            ifnull 7
         4: .line 364
            getstatic com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode.COMPILE_HANDLE:Ljava/lang/invoke/MethodHandle;
            aload 1 /* callTarget */
            invokevirtual java.lang.invoke.MethodHandle.invokeExact:(Lcom/oracle/truffle/api/CallTarget;)V
         5: .line 365
            iconst_1
            ireturn
         6: .line 366
      StackMap locals: java.lang.Object com.oracle.truffle.api.CallTarget
      StackMap stack: java.lang.Throwable
            pop
         7: .line 370
      StackMap locals:
      StackMap stack:
            iconst_0
            ireturn
        end local 1 // com.oracle.truffle.api.CallTarget callTarget
        end local 0 // java.lang.Object fnObj
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    8     0       fnObj  Ljava/lang/Object;
            3    8     1  callTarget  Lcom/oracle/truffle/api/CallTarget;
      Exception table:
        from    to  target  type
           4     5       6  Class java.lang.Throwable
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$TruffleBoundary()
      com.oracle.truffle.api.dsl.Specialization()
    MethodParameters:
       Name  Flags
      fnObj  
}
SourceFile: "DebugBuiltins.java"
NestHost: com.oracle.truffle.js.builtins.DebugBuiltins
InnerClasses:
  public abstract TruffleBoundary = com.oracle.truffle.api.CompilerDirectives$TruffleBoundary of com.oracle.truffle.api.CompilerDirectives
  public abstract DebugCompileFunctionNode = com.oracle.truffle.js.builtins.DebugBuiltins$DebugCompileFunctionNode of com.oracle.truffle.js.builtins.DebugBuiltins
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles