message: Do not enforce alignment on string tensors.
  It's not as if eigen can generate vectorized code for them anyway...
diff: @@ -237,7 +237,8 @@ class Tensor {
  return true;
  #else
  void* ptr = base<void>();
  - return reinterpret_cast<intptr_t>(ptr) % EIGEN_MAX_ALIGN_BYTES == 0;
  + return dtype() == DT_STRING ||
  + (reinterpret_cast<intptr_t>(ptr) % EIGEN_MAX_ALIGN_BYTES == 0);
  #endif
  }
  