new

    ALOAD 2
    INVOKESTATIC DashE.ivarSet0:@a (Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/ivars/VariableAccessor;
    ALOAD 2
    ALOAD 0
    INVOKEDYNAMIC fixnum(Lorg/jruby/runtime/ThreadContext;)Lorg/jruby/runtime/builtin/IRubyObject; [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/ir/targets/indy/FixnumObjectSite.bootstrap(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;J)Ljava/lang/invoke/CallSite;
      // arguments:
      1
    ]
    INVOKEVIRTUAL org/jruby/runtime/ivars/VariableAccessor.set (Ljava/lang/Object;Ljava/lang/Object;)V

old

    ALOAD 2
    ALOAD 0
    INVOKEDYNAMIC fixnum(Lorg/jruby/runtime/ThreadContext;)Lorg/jruby/runtime/builtin/IRubyObject; [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/ir/targets/indy/FixnumObjectSite.bootstrap(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;J)Ljava/lang/invoke/CallSite;
      // arguments:
      1
    ]
    DUP2
    POP
    INVOKESTATIC DashE.ivarSet0:@a (Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/ivars/VariableAccessor;
    INVOKESTATIC org/jruby/ir/runtime/IRRuntimeHelpers.setVariableWithAccessor (Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/ivars/VariableAccessor;)V