760 t_type_ptr find_most_common_block_type(const DeviceGrid& grid) {
761     auto& device_ctx = g_vpr_ctx.device();
762
763     t_type_ptr max_type = nullptr;
764     size_t max_count = 0;
765     for (int itype = 0; itype < device_ctx.num_block_types; ++itype) {
766         t_type_ptr type = &device_ctx.block_types[itype];
767
768         size_t inst_cnt = grid.num_instances(type);
769         if (max_count < inst_cnt) {
770             max_count = inst_cnt;
771             max_type = type;
772         }
773     }
774
775     VTR_ASSERT(max_type);
776     return max_type;
777 }