def op_BUILD_SLICE(self, info, inst):
        argc = inst.arg
        if argc == 2:
            tos = info.pop()
            tos1 = info.pop()
            start = tos1
            stop = tos
            step = None
        elif argc == 3:
            tos = info.pop()
            tos1 = info.pop()
            tos2 = info.pop()
            start = tos2
            stop = tos1
            step = tos
        else:
            raise Exception("unreachable")
        slicevar = info.make_temp()
        res = info.make_temp()
        info.append(inst, start=start, stop=stop, step=step, res=res,
                    slicevar=slicevar)
        info.push(res)
slice(TOS1, TOS) or slice(TOS2, TOS1, TOS)
dataset/ETHPy150Open numba/numba/numba/dataflow.py/DataFlowAnalysis.op_BUILD_SLICE