Method raw_ptr_not_for_readwrite

imperative/src/impl/physical_tensor.cpp:551–553

}

void* OwnedBlob::raw_ptr_not_for_readwrite() {
    return m_storage.get();
}

BorrowedBlob::BorrowedBlob(CompNode cn, std::shared_ptr<OwnedBlob> owner)
        : Blob(cn, owner->size()),