new lang update: while, sizeof

/// CODE ///
extern func dump( v : int64 );

func _test( a : int32 ) : int32
{
    var v : int8 = -5;
    while( v < 0 )
    {
        dump( v + a );
        v += 1;
    }
    return 0s8 + a + v;
}

func main()
{
    dump( sizeof( uint16 ) );
    dump( sizeof( 0s8 ) );
    dump( sizeof( 0s64 ) );
    dump( sizeof( 0f32 ) );
    var dbl : float64;
    dump( sizeof( dbl ) );

    dump( _test( 1 ) );
}
/// GENERATED C CODE ///
Iint32 _Itest( Iint32 Ia )
{
    Iint8 Iv;
    const Iuint8 I0 = 5;
    Iint32 I1 = -I0;
    Iv = I1;
lbl_0:;
    const Iuint8 I2 = 0;
    Ibool I3 = Iv < I2;
    if( !I3 ) goto lbl_1;
    Iint32 I4 = Iv + Ia;
    Idump( I4 );
    const Iuint8 I5 = 1;
    Iv = Iv + I5;
    goto lbl_0;
lbl_1:;
    const Iint8 I6 = 0;
    Iint32 I7 = I6 + Ia;
    Iint32 I8 = I7 + Iv;
    return I8;
}

void Imain()
{
    Ifloat64 Idbl;
    const Iint32 I0 = 2;
    Idump( I0 );
    const Iint8 I1 = 0;
    const Iint32 I2 = 1;
    Idump( I2 );
    const Iint64 I3 = 0;
    const Iint32 I4 = 8;
    Idump( I4 );
    const Ifloat32 I5 = 0.000000000000000000;
    const Iint32 I6 = 4;
    Idump( I6 );
    const Iint32 I7 = 8;
    Idump( I7 );
    const Iuint8 I8 = 1;
    Iint32 I9 = _Itest( I8 );
    Idump( I9 );
}
/// OUTPUT ///
int (2)
int (1)
int (8)
int (4)
int (8)
int (-4)
int (-3)
int (-2)
int (-1)
int (0)
int (1)