"fallback enabled.";
    return absl::OkStatus();
  }

  mlir::OwningOpRef<mlir::ModuleOp> module_ref =
      std::move(module_ref_status.value());
  AddDevicesToOp(*module_ref, &device_set);

  int per_pass_state_index = 0;
  bool is_module_updated = false;
  for (auto& pass_registration : registry_->passes()) {
    llvm::StringRef name = pass_registration.pass->name();