// Enable automated pipelining pass unless:
  // 1. The user disables it via flag, or
  // 2. The graph contains TF.Summary ops. Graphs like this typically only run
  //    for a single step which doesn't work in pipelining.

  if (tensorflow::GetBuildXlaOpsPassFlags()
          ->tf_xla_disable_full_embedding_pipelining) {
    LOG(INFO) << "Embedding pipelining disabled via flag.";
    return false;
  }

compiling to XLA.
### `-tf-einsum`

_Transform Einsum to other TF Ops for the supported variants_

### `-tf-embedding-pipelining`

_Rewrite graph for embedding pipelining_

For architectures that support accelerated embedding lookups, this pass will
rewrite the graph to use pipelining for better device utilization.
### `-tf-embedding-program-key`

_Sets the program key for embedding ops._