Created by: NHZlX

There is bug in the AttachImpl func of the split op :

bool SplitOp::AttachImpl(const cpp::OpDesc &opdesc, lite::Scope *scope) {
  param_.axis = opdesc.GetAttr<int>("axis");
  param_.num = opdesc.GetAttr<int>("num");
  param_.sections = opdesc.GetAttr<std::vector<int>>("sections");
  auto input = opdesc.Input("X").front();
  auto outs = opdesc.Output("Out");
  param_.x = scope->FindVar(input)->GetMutable<lite::Tensor>();
  for (auto var : outs) {
    param_.output.push_back(scope->FindVar(var)->GetMutable<lite::Tensor>());
  }
  return true;
}

the param_.output should be cleared before the push_back operation.