// match: (CondSelect <t> x y check)
	// cond: !check.Type.IsFlags() && check.Type.Size() == 2
	// result: (CondSelect <t> x y (MOVWQZX <typ.UInt64> check))
	for {
		t := v.Type
		x := v_0
		y := v_1
		check := v_2
		if !(!check.Type.IsFlags() && check.Type.Size() == 2) {
			break
		}
		v.reset(OpCondSelect)
		v.Type = t
		v0 := b.NewValue0(v.Pos, OpAMD64MOVWQZX, typ.UInt64)
		v0.AddArg(check)

		v.Op = OpARM64MVN
		return true
	case OpCom32:
		v.Op = OpARM64MVN
		return true
	case OpCom64:
		v.Op = OpARM64MVN
		return true
	case OpCom8:
		v.Op = OpARM64MVN
		return true
	case OpCondSelect:
		return rewriteValueARM64_OpCondSelect(v)
	case OpConst16:
		return rewriteValueARM64_OpConst16(v)
	case OpConst32:
		return rewriteValueARM64_OpConst32(v)
	case OpConst32F: