https://www.graalvm.org/ 
public class org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp extends org.graalvm.compiler.lir.aarch64.AArch64Move$ZeroNullConversionOp
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp
  super_class: org.graalvm.compiler.lir.aarch64.AArch64Move$ZeroNullConversionOp
{
  public static final org.graalvm.compiler.lir.LIRInstructionClass<org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp> TYPE;
    descriptor: Lorg/graalvm/compiler/lir/LIRInstructionClass;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    Signature: Lorg/graalvm/compiler/lir/LIRInstructionClass<Lorg/graalvm/compiler/lir/aarch64/AArch64Move$ConvertNullToZeroOp;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 829
            ldc Lorg/graalvm/compiler/lir/aarch64/AArch64Move$ConvertNullToZeroOp;
            invokestatic org.graalvm.compiler.lir.LIRInstructionClass.create:(Ljava/lang/Class;)Lorg/graalvm/compiler/lir/LIRInstructionClass;
            putstatic org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp.TYPE:Lorg/graalvm/compiler/lir/LIRInstructionClass;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(jdk.vm.ci.meta.AllocatableValue, jdk.vm.ci.meta.AllocatableValue);
    descriptor: (Ljdk/vm/ci/meta/AllocatableValue;Ljdk/vm/ci/meta/AllocatableValue;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp this
        start local 1 // jdk.vm.ci.meta.AllocatableValue result
        start local 2 // jdk.vm.ci.meta.AllocatableValue input
         0: .line 832
            aload 0 /* this */
            getstatic org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp.TYPE:Lorg/graalvm/compiler/lir/LIRInstructionClass;
            aload 1 /* result */
            aload 2 /* input */
            invokespecial org.graalvm.compiler.lir.aarch64.AArch64Move$ZeroNullConversionOp.<init>:(Lorg/graalvm/compiler/lir/LIRInstructionClass;Ljdk/vm/ci/meta/AllocatableValue;Ljdk/vm/ci/meta/AllocatableValue;)V
         1: .line 833
            return
        end local 2 // jdk.vm.ci.meta.AllocatableValue input
        end local 1 // jdk.vm.ci.meta.AllocatableValue result
        end local 0 // org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/graalvm/compiler/lir/aarch64/AArch64Move$ConvertNullToZeroOp;
            0    2     1  result  Ljdk/vm/ci/meta/AllocatableValue;
            0    2     2   input  Ljdk/vm/ci/meta/AllocatableValue;
    MethodParameters:
        Name  Flags
      result  
      input   

  protected final void emitConversion(jdk.vm.ci.code.Register, jdk.vm.ci.code.Register, jdk.vm.ci.code.Register, org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler);
    descriptor: (Ljdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;Lorg/graalvm/compiler/asm/aarch64/AArch64MacroAssembler;)V
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Code:
      stack=5, locals=6, args_size=5
        start local 0 // org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp this
        start local 1 // jdk.vm.ci.code.Register resultRegister
        start local 2 // jdk.vm.ci.code.Register inputRegister
        start local 3 // jdk.vm.ci.code.Register nullRegister
        start local 4 // org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler masm
         0: .line 837
            aload 2 /* inputRegister */
            aload 1 /* resultRegister */
            invokevirtual jdk.vm.ci.code.Register.equals:(Ljava/lang/Object;)Z
            ifeq 7
         1: .line 838
            aload 4 /* masm */
            bipush 64
            aload 2 /* inputRegister */
            aload 2 /* inputRegister */
            aload 3 /* nullRegister */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.subs:(ILjdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;)V
         2: .line 839
            new org.graalvm.compiler.asm.Label
            dup
            invokespecial org.graalvm.compiler.asm.Label.<init>:()V
            astore 5 /* done */
        start local 5 // org.graalvm.compiler.asm.Label done
         3: .line 840
            aload 4 /* masm */
            getstatic org.graalvm.compiler.asm.aarch64.AArch64Assembler$ConditionFlag.EQ:Lorg/graalvm/compiler/asm/aarch64/AArch64Assembler$ConditionFlag;
            aload 5 /* done */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.branchConditionally:(Lorg/graalvm/compiler/asm/aarch64/AArch64Assembler$ConditionFlag;Lorg/graalvm/compiler/asm/Label;)V
         4: .line 841
            aload 4 /* masm */
            bipush 64
            aload 2 /* inputRegister */
            aload 2 /* inputRegister */
            aload 3 /* nullRegister */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.add:(ILjdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;)V
         5: .line 842
            aload 4 /* masm */
            aload 5 /* done */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.bind:(Lorg/graalvm/compiler/asm/Label;)V
        end local 5 // org.graalvm.compiler.asm.Label done
         6: .line 843
            goto 13
         7: .line 844
      StackMap locals:
      StackMap stack:
            aload 4 /* masm */
            bipush 64
            aload 1 /* resultRegister */
            aload 1 /* resultRegister */
            aload 1 /* resultRegister */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.subs:(ILjdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;)V
         8: .line 845
            aload 4 /* masm */
            bipush 64
            aload 2 /* inputRegister */
            aload 3 /* nullRegister */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.cmp:(ILjdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;)V
         9: .line 846
            new org.graalvm.compiler.asm.Label
            dup
            invokespecial org.graalvm.compiler.asm.Label.<init>:()V
            astore 5 /* done */
        start local 5 // org.graalvm.compiler.asm.Label done
        10: .line 847
            aload 4 /* masm */
            getstatic org.graalvm.compiler.asm.aarch64.AArch64Assembler$ConditionFlag.EQ:Lorg/graalvm/compiler/asm/aarch64/AArch64Assembler$ConditionFlag;
            aload 5 /* done */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.branchConditionally:(Lorg/graalvm/compiler/asm/aarch64/AArch64Assembler$ConditionFlag;Lorg/graalvm/compiler/asm/Label;)V
        11: .line 848
            aload 4 /* masm */
            aload 1 /* resultRegister */
            aload 2 /* inputRegister */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.movx:(Ljdk/vm/ci/code/Register;Ljdk/vm/ci/code/Register;)V
        12: .line 849
            aload 4 /* masm */
            aload 5 /* done */
            invokevirtual org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.bind:(Lorg/graalvm/compiler/asm/Label;)V
        end local 5 // org.graalvm.compiler.asm.Label done
        13: .line 851
      StackMap locals:
      StackMap stack:
            return
        end local 4 // org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler masm
        end local 3 // jdk.vm.ci.code.Register nullRegister
        end local 2 // jdk.vm.ci.code.Register inputRegister
        end local 1 // jdk.vm.ci.code.Register resultRegister
        end local 0 // org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   14     0            this  Lorg/graalvm/compiler/lir/aarch64/AArch64Move$ConvertNullToZeroOp;
            0   14     1  resultRegister  Ljdk/vm/ci/code/Register;
            0   14     2   inputRegister  Ljdk/vm/ci/code/Register;
            0   14     3    nullRegister  Ljdk/vm/ci/code/Register;
            0   14     4            masm  Lorg/graalvm/compiler/asm/aarch64/AArch64MacroAssembler;
            3    6     5            done  Lorg/graalvm/compiler/asm/Label;
           10   13     5            done  Lorg/graalvm/compiler/asm/Label;
    MethodParameters:
                Name  Flags
      resultRegister  
      inputRegister   
      nullRegister    
      masm            

  public void emitCode(org.graalvm.compiler.lir.asm.CompilationResultBuilder, org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler);
    descriptor: (Lorg/graalvm/compiler/lir/asm/CompilationResultBuilder;Lorg/graalvm/compiler/asm/aarch64/AArch64MacroAssembler;)V
    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
            invokespecial org.graalvm.compiler.lir.aarch64.AArch64Move$ZeroNullConversionOp.emitCode:(Lorg/graalvm/compiler/lir/asm/CompilationResultBuilder;Lorg/graalvm/compiler/asm/aarch64/AArch64MacroAssembler;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "AArch64Move.java"
NestHost: org.graalvm.compiler.lir.aarch64.AArch64Move
InnerClasses:
  public final ConditionFlag = org.graalvm.compiler.asm.aarch64.AArch64Assembler$ConditionFlag of org.graalvm.compiler.asm.aarch64.AArch64Assembler
  public ConvertNullToZeroOp = org.graalvm.compiler.lir.aarch64.AArch64Move$ConvertNullToZeroOp of org.graalvm.compiler.lir.aarch64.AArch64Move
  private abstract ZeroNullConversionOp = org.graalvm.compiler.lir.aarch64.AArch64Move$ZeroNullConversionOp of org.graalvm.compiler.lir.aarch64.AArch64Move