// Among the ops with regions, only reduce_window op is supported for now.
      if (!isa<mlir::stablehlo::ReduceWindowOp>(op_with_region)) {
        return failure();
      }

      if (!IsNestedRegionQuantizable(op_with_region)) {
        return failure();
      }

      // Quantization parameters can be propagated only for same-scale ops and