arg0.Uses++
	arg1.Uses++
	return v
}

// NewValue2A returns a new value in the block with two arguments and one aux values.
func (b *Block) NewValue2A(pos src.XPos, op Op, t *types.Type, aux Aux, arg0, arg1 *Value) *Value {
	v := b.Func.newValue(op, t, b, pos)
	v.AuxInt = 0
	v.Aux = aux
	v.Args = v.argstorage[:2]
	v.argstorage[0] = arg0
	v.argstorage[1] = arg1
	arg0.Uses++
	arg1.Uses++

	s := b.Func.ConstInt64(types.Types[types.TUINT64], shift)
	size := v.Type.Size()
	switch size {
	case 8:
		return b.NewValue2(pos, OpLsh64x64, v.Type, v, s)
	case 4:
		return b.NewValue2(pos, OpLsh32x64, v.Type, v, s)
	case 2:
		return b.NewValue2(pos, OpLsh16x64, v.Type, v, s)
	default:
		base.Fatalf("bad size %d\n", size)
		return nil
	}
}