func (s *regAllocState) makeSpill(v *Value, b *Block) *Value {
	vi := &s.values[v.ID]
	if vi.spill != nil {
		// Final block not known - keep track of subtree where restores reside.
		vi.restoreMin = min32(vi.restoreMin, s.sdom[b.ID].entry)
		vi.restoreMax = max32(vi.restoreMax, s.sdom[b.ID].exit)
		return vi.spill
	}
	// Make a spill for v. We don't know where we want
	// to put it yet, so we leave it blockless for now.

	if objectAPI == nil {
		return
	}

	vars := mux.Vars(r)
	restoreID := vars["restoreId"]
	if restoreID == "" {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
		return
	}
	if restoreID == "all" {
		chEntries, err := listServerConfigHistory(ctx, objectAPI, false, -1)
		if err != nil {

			adminRouter.Methods(http.MethodPut).Path(adminVersion+"/restore-config-history-kv").HandlerFunc(adminMiddleware(adminAPI.RestoreConfigHistoryKVHandler)).Queries("restoreId", "{restoreId:.*}")
		}

		// Config import/export bulk operations
		if enableConfigOps {
			// Get config

		if err != nil {
			return nil, err
		}
		for _, obj := range res.Objects {
			cfgEntry := madmin.ConfigHistoryEntry{
				RestoreID:  strings.TrimSuffix(path.Base(obj.Name), kvPrefix),
				CreateTime: obj.ModTime, // ModTime is createTime for config history entries.
			}
			if withData {
				data, err := readConfig(ctx, objAPI, obj.Name)