Method newConcatConv2

core/engine.cpp:127–130

  }

  Ref<ConcatConv2> Engine::newConcatConv2(const ConcatConvDesc& desc)
  {
    throw std::logic_error("concat+conv operation is not implemented");
  }

  void* Engine::usmAlloc(size_t byteSize, Storage storage)
  {