message: Allow OutfeedEnqueueTuple legalization without fallback as the fallback pattern doesn't support it
diff: @@ -6482,6 +6482,10 @@ const llvm::DenseSet<mlir::TypeID> &MlirPreferredOps() {
  // Const op has a simple legalization and it is much more efficient to lower
  // within MLIR.
  TypeID::get<TF::ConstOp>(),
  +
  + // TF2XLA fallback pattern doesn't support this op as MLIR hlo builder
  + // doesn't implement the outfeed op builder method.
  + TypeID::get<TF::OutfeedEnqueueTupleOp>(),
  };
  // clang-format on
  return *ops;
  