cgOp (LLSHR  ity)          [x,y] = binary (ATInt ity) x y (LShr False)
cgOp (LLSHR  ity)          [x,y] = binary (ATInt ity) x y (LShr False)
cgOp (LLSHR  ity)          [x,y] = binary (ATInt ity) x y (LShr False)