}
		v.reset(OpRISCV64SRAIW)
		v.Type = t
		v.AuxInt = int64ToAuxInt(int64(x))
		v.AddArg(y)
		return true
	}
	// match: (SRAI <t> [x] (MOVBreg y))
	// cond: x >= 8
	// result: (SRAI [63] (SLLI <t> [56] y))
	for {
		t := v.Type
		x := auxIntToInt64(v.AuxInt)
		if v_0.Op != OpRISCV64MOVBreg {
			break
		}
		y := v_0.Args[0]
		if !(x >= 8) {
			break
		}

		case ASLD:
			opset(ASLDCC, r0)
			opset(ASRD, r0)
			opset(ASRDCC, r0)
			opset(AROTL, r0)

		case ASRAW: /* sraw Rb,Rs,Ra; srawi sh,Rs,Ra */
			opset(ASRAWCC, r0)

		case AEXTSWSLI:
			opset(AEXTSWSLICC, r0)

		case ASRAD: /* sraw Rb,Rs,Ra; srawi sh,Rs,Ra */
			opset(ASRADCC, r0)

		case ASUB: /* SUB Ra,Rb,Rd => subf Rd,ra,rb */
			opset(ASUB, r0)

			opset(ASUBCC, r0)