in case regClass reg of
RcInteger -> MOV II64 (OpReg reg) (OpAddr (spRel off_w))
RcDouble -> MOV FF64 (OpReg reg) (OpAddr (spRel off_w))
in case regClass reg of
RcInteger -> MOV II64 (OpReg reg) (OpAddr (spRel off_w))
RcDouble -> MOV FF64 (OpReg reg) (OpAddr (spRel off_w))