// multiple TPU clusters.
  Region* region = (*forward_pass_ops.begin())->getParentRegion();
  StringAttr replication_attr = GetReplicationAttr(*forward_pass_ops.begin());
  llvm::SmallVector<Operation*> checkset(forward_pass_ops.getArrayRef());
  checkset.append(backward_pass_ops.begin(), backward_pass_ops.end());
  for (Operation* op : checkset) {
    if (op->getParentRegion() != region) {

    return a->isBeforeInBlock(b);
  });
}

void SideEffectAnalysisInfo::AnalyzeRegion(Region* region) {
  // We explicitly iterate through the regions and blocks in order to handle
  // different nested regions separately.
  for (Block& block : *region) {
    for (Operation& op : block) {
      for (Region& child_region : op.getRegions()) {
        SideEffectAnalysisInfo child_analysis(

func isParadigmLocale(lang language.Language, r language.Region) bool {
	for _, e := range paradigmLocales {
		if language.Language(e[0]) == lang && (r == language.Region(e[1]) || r == language.Region(e[2])) {
			return true
		}
	}
	return false
}

// regionGroupDist computes the distance between two regions based on their
// CLDR grouping.

					if regionZoneSubZoneMap[region][zone]["*"] {
						return fmt.Errorf("locality %s overlap with previous specified ones", locality)
					}
					if regionZoneSubZoneMap[region][zone][subZone] {
						return fmt.Errorf("locality %s overlap with previous specified ones", locality)
					}
					regionZoneSubZoneMap[region][zone][subZone] = true
				} else {

	}
	if expectedCredentials.scope.region != actualCredential.scope.region {
		t.Errorf("Test %d: region mismatch:Expected \"%s\", got \"%s\"", testNum, expectedCredentials.scope.region, actualCredential.scope.region)
	}
	if expectedCredentials.scope.service != actualCredential.scope.service {

			{trace.EventRegionBegin, trace.TaskID(1), []string{"region0"}},
			{trace.EventRegionBegin, trace.TaskID(1), []string{"region1"}},
			{trace.EventLog, trace.TaskID(1), []string{"key0", "0123456789abcdef"}},
			{trace.EventRegionEnd, trace.TaskID(1), []string{"region1"}},
			{trace.EventRegionEnd, trace.TaskID(1), []string{"region0"}},
			{trace.EventTaskEnd, trace.TaskID(1), []string{"task0"}},

} PosixMemoryRegion;

static void Cleanup(TF_ReadOnlyMemoryRegion* region) {
  auto r = static_cast<PosixMemoryRegion*>(region->plugin_memory_region);
  munmap(const_cast<void*>(r->address), r->length);
  delete r;
}

static const void* Data(const TF_ReadOnlyMemoryRegion* region) {
  auto r = static_cast<PosixMemoryRegion*>(region->plugin_memory_region);
  return r->address;
}

	for i, localityEndpoint := range loadAssignment.Endpoints {
		// if region/zone/subZone all match, the priority is 0.
		// if region/zone match, the priority is 1.
		// if region matches, the priority is 2.
		// if locality not match, the priority is 3.
		priority := util.LbPriority(locality, localityEndpoint.Locality)
		// region not match, apply failover settings when specified

  // Registered hook to check if the given region, which is attached to an
  // operation that is *not* isolated from above (i.e. no internal regions
  // reference values defined in an enclosing region), should be used when
  // materializing constants.
  // In the executor dialect we materialize inside an island.
  bool shouldMaterializeInto(Region *region) const final {
    return isa<tf_executor::IslandOp>(region->getParentOp());

        alias_analysis_(alias_analysis),
        op_to_parallel_ids_(op_to_parallel_ids) {
    AnalyzeFunction(func_op);
  }

  // Constructs analysis info by analyzing the given region.
  SideEffectAnalysisInfo(Region* region,
                         const OpSideEffectCollector& op_side_effect_collector,
                         const TF::ResourceAliasAnalysis::Info& alias_analysis,