Function packLhs

tensorflow/core/kernels/eigen_contraction_kernel.h:612–630

    }                                                                          \
                                                                               \
    EIGEN_DEVICE_FUNC EIGEN_DONT_INLINE void packLhs(                          \
        LhsBlock* lhsBlock, const typename LhsMapper::SubMapper& data_mapper,  \
        const StorageIndex depth, const StorageIndex rows) {                   \
      if (UseCustomContractionKernels()) {                                     \
        const bool is_direct_access =                                          \
            DirectLhsAccess::value &&                                          \
            DirectLhsAccess::block(data_mapper, rows, depth,                   \
                                   bn > 0 ? divup(n, bn) : 0, lhsBlock);       \
                                                                               \
        if (!is_direct_access) {                                               \
          lhsBlock->is_direct_access = false;                                  \
          LhsPacker()(lhsBlock->packed_data, data_mapper, rows, depth);        \
        }                                                                      \
      } else {                                                                 \
        lhsBlock->is_direct_access = false;                                    \
        EigenLhsPacker()(lhsBlock->packed_data, data_mapper, depth, rows,      \
                         /*stride*/ 0, /*offset*/ 0);                          \
      }                                                                        \
    }                                                                          \
                                                                               \
    EIGEN_DEVICE_FUNC EIGEN_DONT_INLINE void packRhs(                          \
        RhsBlock* rhsBlock, const typename RhsMapper::SubMapper& data_mapper,  \