return success();
}

// Returns true if the op contains a `CalibrationStatisticsSaverOp`.
bool ContainCalibrationStatisticsSaverOp(Operation* op) {
  // Check the region for CaseRegionOp, IfRegionOp and WhileRegionOp.
  for (Region& region : op->getRegions()) {
    if (!region.getOps<TF::CalibrationStatisticsSaverOp>().empty()) {
      return true;
    }
  }

        PropagatePotentiallyWrittenUpFromCallee(callee.getRegion(),
                                                if_op.getInput());
      }
      return;
    }
    if (auto if_op = dyn_cast<TF::IfRegionOp>(op)) {
      PropagatePotentiallyWrittenUpFromCallee(if_op.getThenBranch(),
                                              if_op.getODSOperands(1));
      PropagatePotentiallyWrittenUpFromCallee(if_op.getElseBranch(),