shr(8)          g3<1>UD         g3<8,8,1>UD     0x00000001UD    { align1 };
shr(16)         g8<1>UD         g4<8,8,1>UD     0x00000001UD    { align1 compr };
shr(1)          g8.4<1>UD       g8.4<0,1,0>UD   0x00000004UD    { align1 nomask };