Forum Post: RE: Why a opcode can't using in CCS 3.3

C6000 does not have a 64-bit shifter, it has only a 40-bit shifter.  You have to construct a 64-bit shift from other, smaller shifts. For example, here is 64-bit right shift by 1:

           SHL     A5,0x1f,B4            SHRU    A4,0x1,A3             OR      B4,A3,A4  ||        SHRU    A5,0x1,A5