doPrefetchMutableByteArrayOp _ _
   = panic "StgCmmPrim: doPrefetchByteArrayOp"
doPrefetchMutableByteArrayOp _ _
   = panic "StgCmmPrim: doPrefetchByteArrayOp"
doPrefetchMutableByteArrayOp _ _
   = panic "StgCmmPrim: doPrefetchByteArrayOp"