void ReplaceResourceLoads(Region& region, bool read_only);

  // Appends final values writte to resources to the region returns for the
  // given set of regions.
  void AppendResourceStoreValueToReturn(RegionRange regions);

  // Performs the final replacement of the op.
  void ReplaceOpWithNewOp();

  // Returns is this resource was written to in any of the regions.