std::vector<std::optional<double>> node_mins;
  if (!min_values.empty()) {
    std::vector<std::string> node_mins_str = absl::StrSplit(min_values, ',');
    for (const std::string& node_mins_str : node_mins_str) {
      double value;
      if (!absl::SimpleAtod(node_mins_str, &value)) {
        llvm::errs() << "Unexpected mins: " << node_mins_str << "\n";
        return true;
      }
      node_mins.push_back(value);
    }
  }