message: [XLA] Lower megacore fusions as custom fusions.
diff: @@ -227,8 +227,10 @@ std::vector<std::string> DumpHloModuleImpl(const HloModule& module,
  std::vector<absl::optional<std::string>> file_paths;
  if (opts.dump_as_text) {
  - file_paths.push_back(DumpToFileInDirOrStdoutImpl(StrCat(filename, ".txt"),
  - module.ToString(), opts));
  + file_paths.push_back(DumpToFileInDirOrStdoutImpl(
  + StrCat(filename, ".txt"),
  + module.ToString(HloPrintOptions().set_print_backend_config(true)),
  + opts));
  if (buffer_assn) {
  file_paths.push_back(DumpToFileInDirOrStdoutImpl(
  StrCat(filename, "-buffer-assignment.txt"), buffer_assn->ToString(),
  