// need to keep their RR shifts.
		fixShift := func(a *obj.Addr) {
			if a.Type == obj.TYPE_SHIFT {
				typ := a.Offset & SHIFT_RR
				isConst := a.Offset&(1<<4) == 0
				amount := a.Offset >> 7 & 0x1f
				if isConst && amount == 0 && (typ == SHIFT_LR || typ == SHIFT_AR || typ == SHIFT_RR) {
					a.Offset -= typ
					a.Offset += SHIFT_LL
				}
			}
		}
		fixShift(&p.From)
		fixShift(&p.To)
	}