// captured resource typed value is used for all region results, then that value
// is forwared to the result and the result is dropped.
LogicalResult CanonicalizeRegionIfCaseCluster(Operation *op) {
  // Check if the same value is used for all region results for this output.
  bool has_resource_result = false;
  for (OpResult result : op->getResults()) {
    if (!IsResource(result)) continue;