v.AddArg(x)
		return true
	}
	// match: (RISBGZ x {r})
	// cond: r == s390x.NewRotateParams(56, 63, 0)
	// result: (MOVBZreg x)
	for {
		r := auxToS390xRotateParams(v.Aux)
		x := v_0
		if !(r == s390x.NewRotateParams(56, 63, 0)) {
			break
		}
		v.reset(OpS390XMOVBZreg)
		v.AddArg(x)
		return true
	}
	// match: (RISBGZ x {r})