}
  }
  return while_callers;
}

bool IsResourceType(Type type) {
  return mlir::isa<TF::ResourceType>(getElementTypeOrSelf(type));
}

bool OnlyOperatesOnCompositeDevices(
    TF::TPUExecuteAndUpdateVariablesOp& op,
    const TF::SideEffectAnalysis::Info& side_effect_analysis,
    const DataFlowSolver& solver) {
  auto& alias_analysis = side_effect_analysis.GetAliasAnalysis();