}
			if target.Is386() && target.IsExternal() && target.IsELF {
				nExtReloc++ // need two ELF relocations on 386, see ../x86/asm.go:elfreloc1
			}
			fallthrough
		case objabi.R_CALL, objabi.R_PCREL:
			if target.IsExternal() && rs != 0 && rst == sym.SUNDEFEXT {
				// pass through to the external linker.
				nExtReloc++
				o = 0
				break
			}

    // Find out the compose function
    auto compose_func_name = GetComposeFuncName(op->getName().getStringRef());
    auto compose_func = table.lookup<TFRFuncOp>(compose_func_name);
    if (!compose_func || compose_func.isExternal()) {
      // There are no decomposition methods defined for this op, skip.
      return WalkResult::advance();
    }

    // Make sure all the attributes are valid. An attribute is valid when it is

	// mark all Go symbols local (not global) in the final executable.
	// But when we're dynamically linking, we need all those global symbols.
	if !ctxt.DynlinkingGo() && ctxt.IsExternal() && !ldr.AttrCgoExportStatic(x) && elfshnum != elf.SHN_UNDEF {
		bind = elf.STB_LOCAL
	}

	if ctxt.LinkMode == LinkExternal && elfshnum != elf.SHN_UNDEF {
		addr -= int64(xosect.Vaddr)
	}

    override val isInline: Boolean get() = withValidityAssertion { false }
    override val isFun: Boolean get() = withValidityAssertion { false }
    override val isExternal: Boolean get() = withValidityAssertion { false }
    override val isActual: Boolean get() = withValidityAssertion { false }
    override val isExpect: Boolean get() = withValidityAssertion { false }

    return;
  }
  TF::SideEffectAnalysis side_effect_analysis(module_op,
                                              op_to_parallel_ids_map);
  for (auto func : module_op.getOps<func::FuncOp>()) {
    if (func.isExternal()) continue;
    const auto& analysis_for_func =
        side_effect_analysis.GetAnalysisForFunc(func);
    if (failed(UpdateAllControlDependencies(func, analysis_for_func))) {
      signalPassFailure();
      return;

var NotVM = Not(VM)

// External matches instances that have a custom DefaultHostHeader defined
var External Matcher = func(i echo.Instance) bool {
	return i.Config().IsExternal()
}

// NotExternal is equivalent to Not(External)
var NotExternal = Not(External)

// Naked matches instances with any subset marked with SidecarInject equal to false.

void ClusterFormationPass::runOnOperation() {
  auto module = getOperation();
  auto& side_effect_analysis = getAnalysis<TF::SideEffectAnalysis>();

  for (auto func : module.getOps<func::FuncOp>()) {
    if (func.isExternal()) continue;
    OpBuilder builder(func.getContext());
    const TF::SideEffectAnalysis::Info& info =
        side_effect_analysis.GetAnalysisForFunc(func);

	default:
		return val
	}
}

func archreloc(target *ld.Target, ldr *loader.Loader, syms *ld.ArchSyms, r loader.Reloc, s loader.Sym, val int64) (o int64, nExtReloc int, ok bool) {
	rs := r.Sym()
	if target.IsExternal() {
		switch r.Type() {
		default:
			return val, 0, false

		case objabi.R_ADDRMIPS, objabi.R_ADDRMIPSU:
			// set up addend for eventual relocation via outer symbol.
			_, off := ld.FoldSubSymbolOffset(ldr, rs)

 public:
  void runOnOperation() override;
};

void SplitIntoIslandPerOpPass::runOnOperation() {
  func::FuncOp func = getOperation();

  if (func.isExternal()) {
    // Just ignore the op if this is an external func with no body.
    return;
  }

  tf_executor::GraphOp graph_op;

  if (llvm::hasSingleElement(func.front().without_terminator())) {

  // Use a global path index across functions to make it easier to follow one
  // path for debugging purposes.
  int path_idx = 0;
  for (auto func : module.getOps<func::FuncOp>()) {
    if (func.isExternal()) continue;
    const auto& analysis_for_func =
        side_effect_analysis.GetAnalysisForFunc(func);
    CheckControlDependenciesForFunc(func, analysis_for_func, path_idx);
  }
}

}  // namespace