https://www.graalvm.org/ 
public final class org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp extends org.graalvm.compiler.lir.amd64.AMD64LIRInstruction
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp
  super_class: org.graalvm.compiler.lir.amd64.AMD64LIRInstruction
{
  public static final org.graalvm.compiler.lir.LIRInstructionClass<org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp> TYPE;
    descriptor: Lorg/graalvm/compiler/lir/LIRInstructionClass;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    Signature: Lorg/graalvm/compiler/lir/LIRInstructionClass<Lorg/graalvm/compiler/hotspot/amd64/AMD64TailcallOp;>;

  protected jdk.vm.ci.meta.Value target;
    descriptor: Ljdk/vm/ci/meta/Value;
    flags: (0x0004) ACC_PROTECTED
    RuntimeVisibleAnnotations: 
      org.graalvm.compiler.lir.LIRInstruction$Use()

  protected jdk.vm.ci.meta.Value[] parameters;
    descriptor: [Ljdk/vm/ci/meta/Value;
    flags: (0x0004) ACC_PROTECTED
    RuntimeVisibleAnnotations: 
      org.graalvm.compiler.lir.LIRInstruction$Alive()

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 44
            ldc Lorg/graalvm/compiler/hotspot/amd64/AMD64TailcallOp;
            invokestatic org.graalvm.compiler.lir.LIRInstructionClass.create:(Ljava/lang/Class;)Lorg/graalvm/compiler/lir/LIRInstructionClass;
            putstatic org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp.TYPE:Lorg/graalvm/compiler/lir/LIRInstructionClass;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(jdk.vm.ci.meta.Value[], jdk.vm.ci.meta.Value);
    descriptor: ([Ljdk/vm/ci/meta/Value;Ljdk/vm/ci/meta/Value;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp this
        start local 1 // jdk.vm.ci.meta.Value[] parameters
        start local 2 // jdk.vm.ci.meta.Value target
         0: .line 50
            aload 0 /* this */
            getstatic org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp.TYPE:Lorg/graalvm/compiler/lir/LIRInstructionClass;
            invokespecial org.graalvm.compiler.lir.amd64.AMD64LIRInstruction.<init>:(Lorg/graalvm/compiler/lir/LIRInstructionClass;)V
         1: .line 51
            aload 0 /* this */
            aload 2 /* target */
            putfield org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp.target:Ljdk/vm/ci/meta/Value;
         2: .line 52
            aload 0 /* this */
            aload 1 /* parameters */
            putfield org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp.parameters:[Ljdk/vm/ci/meta/Value;
         3: .line 53
            return
        end local 2 // jdk.vm.ci.meta.Value target
        end local 1 // jdk.vm.ci.meta.Value[] parameters
        end local 0 // org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lorg/graalvm/compiler/hotspot/amd64/AMD64TailcallOp;
            0    4     1  parameters  [Ljdk/vm/ci/meta/Value;
            0    4     2      target  Ljdk/vm/ci/meta/Value;
    MethodParameters:
            Name  Flags
      parameters  
      target      

  public void emitCode(org.graalvm.compiler.lir.asm.CompilationResultBuilder, org.graalvm.compiler.asm.amd64.AMD64MacroAssembler);
    descriptor: (Lorg/graalvm/compiler/lir/asm/CompilationResultBuilder;Lorg/graalvm/compiler/asm/amd64/AMD64MacroAssembler;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp this
        start local 1 // org.graalvm.compiler.lir.asm.CompilationResultBuilder crb
        start local 2 // org.graalvm.compiler.asm.amd64.AMD64MacroAssembler masm
         0: .line 58
            aload 2 /* masm */
            invokevirtual org.graalvm.compiler.asm.amd64.AMD64MacroAssembler.leave:()V
         1: .line 61
            aload 2 /* masm */
            aload 0 /* this */
            getfield org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp.target:Ljdk/vm/ci/meta/Value;
            invokestatic jdk.vm.ci.code.ValueUtil.asRegister:(Ljdk/vm/ci/meta/Value;)Ljdk/vm/ci/code/Register;
            invokevirtual org.graalvm.compiler.asm.amd64.AMD64MacroAssembler.jmp:(Ljdk/vm/ci/code/Register;)V
         2: .line 62
            aload 2 /* masm */
            invokevirtual org.graalvm.compiler.asm.amd64.AMD64MacroAssembler.ensureUniquePC:()V
         3: .line 63
            return
        end local 2 // org.graalvm.compiler.asm.amd64.AMD64MacroAssembler masm
        end local 1 // org.graalvm.compiler.lir.asm.CompilationResultBuilder crb
        end local 0 // org.graalvm.compiler.hotspot.amd64.AMD64TailcallOp this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/graalvm/compiler/hotspot/amd64/AMD64TailcallOp;
            0    4     1   crb  Lorg/graalvm/compiler/lir/asm/CompilationResultBuilder;
            0    4     2  masm  Lorg/graalvm/compiler/asm/amd64/AMD64MacroAssembler;
    MethodParameters:
      Name  Flags
      crb   
      masm  
}
SourceFile: "AMD64TailcallOp.java"
InnerClasses:
  public abstract Alive = org.graalvm.compiler.lir.LIRInstruction$Alive of org.graalvm.compiler.lir.LIRInstruction
  public abstract Use = org.graalvm.compiler.lir.LIRInstruction$Use of org.graalvm.compiler.lir.LIRInstruction
    RuntimeVisibleAnnotations: 
      org.graalvm.compiler.lir.Opcode(value = "TAILCALL")