now := UTCNow()
	credentialTemplate := "%s/%s/%s/s3/aws4_request"

	region := globalSite.Region()
	accessKeyID := globalActiveCred.AccessKey
	testCases := []struct {
		queryParams map[string]string
		headers     map[string]string
		region      string
		expected    APIErrorCode
	}{
		// (0) Should error without a set URL query.
		{
			region:   globalMinioDefaultRegion,
			expected: ErrInvalidQueryParams,
		},

	if region.Start != nil {
		startStack = region.Start.Stack()
		startTime = region.Start.Time()
		goroutine = region.Start.Goroutine()
	}
	if region.End != nil {
		endStack = region.End.Stack()
		endTime = region.End.Time()
		goroutine = region.End.Goroutine()
	}
	if goroutine == trace.NoGoroutine {
		return
	}
	arg := struct {
		TaskID uint64 `json:"taskid"`
	}{

	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
		t.Fatalf("Init Test config failed")
	}

	if globalSite.Region() != globalMinioDefaultRegion {
		t.Errorf("Expecting region `us-east-1` found %s", globalSite.Region())
	}

	// Set new region and verify.
	config.SetRegion(globalServerConfig, "us-west-1")
	site, err := config.LookupSite(
		globalServerConfig[config.SiteSubSys][config.Default],

  bool IsPotentiallyWritten(Value resource) const;

 private:
  // Analyze the specified region for resource mutating operations, namely
  // TF::AssignVariableOp, if so, set the resource associated as "potentially
  // written".
  LogicalResult AnalyzeRegion(Region& region);

  // If an op is not one of the handled ones, we assume all resource usages
  // within its purview are mutating in nature.

};

// Return a bitvector that marks all return values that always come from
// the same value.
llvm::BitVector GetInvariantReturns(Region* region, int number_of_results) {
  llvm::BitVector invariant(number_of_results, true);
  std::vector<Value> used_argument(number_of_results, nullptr);
  for (Block& block : region->getBlocks()) {
    for (Operation& op : block.getOperations()) {
      if (!op.hasTrait<OpTrait::ReturnLike>()) continue;

      SetPotentiallyWritten(operand->get());
    }
  });
}

void ResourceAnalyzer::PropagatePotentiallyWrittenUpFromCallee(
    Region& region, Operation::operand_range propagate_to) {
  (void)AnalyzeRegion(region);
  for (auto t : llvm::zip(region.getArguments(), propagate_to)) {
    if (!IsResource(std::get<0>(t))) {
      continue;
    }
    if (IsPotentiallyWritten(std::get<0>(t))) {

	case authTypeSigned, authTypePresigned:
		region := globalSite.Region()
		switch action {
		case policy.GetBucketLocationAction, policy.ListAllMyBucketsAction:
			region = ""
		}
		if s3Err = isReqAuthenticated(ctx, r, region, serviceS3); s3Err != ErrNone {
			return s3Err
		}
		cred, owner, s3Err = getReqAccessKeyV4(r, region, serviceS3)
	}
	if s3Err != ErrNone {
		return s3Err
	}

  return moveLoopInvariantCode(
      loopLike.getLoopRegions(),
      [&](Value value, Region *) {
        return loopLike.isDefinedOutsideOfLoop(value);
      },
      [&](Operation *op, Region *region) {
        return ShouldMoveOutOfRegion(op, region, read_only_vars);
      },
      [&](Operation *op, Region *) { loopLike.moveOutOfLoop(op); });
}

void HoistLoopInvariantPass::runOnOperation() {

      // If the user is not in one of the regions, we are not interested in it.
      // Since all the sub-regions within this region (i.e., regions attached to
      // op's in this region) have themselves gone through lifting, all resource
      // users are expected to be operations in this region and not embedded
      // within other sub-regions attached to ops in this region. So the check

    "${IP_ALIAS_SUBNETWORK}" --project="${PROJECT}" --region="${REGION}" \
    --format='value(fingerprint)')
  local access_token
  access_token=$(gcloud auth print-access-token)
  local request="{\"allowSubnetCidrRoutesOverlap\":$1, \"fingerprint\":\"${fingerprint}\"}"
  local subnetwork_url
  subnetwork_url="${GCE_API_ENDPOINT}projects/${PROJECT}/regions/${REGION}/subnetworks/${IP_ALIAS_SUBNETWORK}"