double TargetHardware::GetOpCost(mlir::Operation* op) const {
  auto* registered_ops = getRegisteredOperationsForHardware(GetTypeId());
  if (registered_ops == nullptr) {
    return kDefaultFixedValuedCost;
  }
  auto abstract_op = op->getRegisteredInfo();
  auto hardware_op = registered_ops->find(abstract_op->getTypeID());
  if (hardware_op == registered_ops->end()) return kDefaultFixedValuedCost;
  return hardware_op->second->GetOpCost(op);

    // We can add other transformations we like here.
    patterns.add<LowerPackIntoConcatReshape, UnrollSplit, UnrollSplitV,
                  PadSlice>(context);
    return patterns;
  }

  mlir::TypeID GetTypeId() const override {
    return mlir::TypeID::get<FooHardware>();
  }

  // We can specify what ops are not supported here.
  bool IsNotSupportedOp(mlir::Operation* op) const override { return false; }

            TypeID::get<TF::OutfeedEnqueueTupleOp>(),
        };
    return ops_set;
  }();
  auto abstractOp = op->getRegisteredInfo();
  if (!abstractOp) return true;
  return ops->count(abstractOp->getTypeID()) == 0;
}

bool IsIntersectionXlaNonXlaOps(Operation* op) {
  static auto* ops = [] {
    llvm::SmallDenseSet<mlir::TypeID, 32>* ops_set =
        new llvm::SmallDenseSet<mlir::TypeID, 32>{

                                               mlir::Type maybe_ref_type) {
  if (auto ref_type =
          mlir::dyn_cast<mlir::tf_type::TensorFlowRefType>(maybe_ref_type))
    return success(ref_type.RemoveRef().getTypeID() == type.getTypeID());
  return failure();
}

// This class provides verification for ops that are known to have the same
// result types and all operands are either of the same type as result or a REF

  // Test case base name for display purposes.
  virtual const string& GetTestCaseName() const { return test_case_name_; }
  // Test case id to verify identity.
  virtual TypeId GetTestCaseTypeId() const { return GetTypeId<TestCase>(); }
  // TEST_P macro uses AddTestPattern() to record information
  // about a single test in a LocalTestInfo structure.
  // test_case_name is the base name of the test case (without invocation

  static bool dummy_;
};

template <typename T>
bool TypeIdHelper<T>::dummy_ = false;

// GetTypeId<T>() returns the ID of type T.  Different values will be
// returned for different types.  Calling the function twice with the
// same type argument is guaranteed to return the same ID.
template <typename T>
TypeId GetTypeId() {
  // The compiler is required to allocate a different

  // Test case base name for display purposes.
  virtual const string& GetTestCaseName() const { return test_case_name_; }
  // Test case id to verify identity.
  virtual TypeId GetTestCaseTypeId() const { return GetTypeId<TestCase>(); }
  // TEST_P macro uses AddTestPattern() to record information
  // about a single test in a LocalTestInfo structure.
  // test_case_name is the base name of the test case (without invocation

    // If the pattern is in include_ops then include it.
    bool include =
        !pat_op_name ||
        IsTypeLegalizedWithMlir(pat_op_name->getRegisteredInfo()->getTypeID());
    if (include) to.add(std::move(pattern));
  }

  // Don't filter PDLPatterns.
  to.add(std::move(from.getPDLPatterns()));

  return to;
}

  static bool dummy_;
};

template <typename T>
bool TypeIdHelper<T>::dummy_ = false;

// GetTypeId<T>() returns the ID of type T.  Different values will be
// returned for different types.  Calling the function twice with the
// same type argument is guaranteed to return the same ID.
template <typename T>
TypeId GetTypeId() {
  // The compiler is required to allocate a different

}

bool IsOpLegalizedWithMlir(Operation& op) {
  auto abstractOp = op.getRegisteredInfo();
  if (!abstractOp) return false;
  return IsTypeLegalizedWithMlir(abstractOp->getTypeID());
}

bool IsTypeLegalizedWithMlir(const TypeID& type_id) {
  return MlirAlwaysOps().contains(type_id);
}

bool IsOpAllowedTf2xlaFallback(const TypeID& type_id) {