doWriteByteArrayOp _ _ _ _
   = panic "StgCmmPrim: doWriteByteArrayOp"
doWriteByteArrayOp _ _ _ _
   = panic "StgCmmPrim: doWriteByteArrayOp"
doWriteByteArrayOp _ _ _ _
   = panic "StgCmmPrim: doWriteByteArrayOp"