Method buildChain

openparf/database/placedb.cpp:682–727

}   // namespace

void PlaceDB::buildChain() {
  const Design      &design          = db_->design();
  const Layout      &layout          = db_->layout();
  auto               top_module_inst = design.topModuleInst();
  auto const        &netlist         = top_module_inst->netlist();
  const std::string &module_name     = place_params_.carry_chain_module_name_;
  Design::IndexType  module_id       = design.modelId(module_name);
  openparfAssert(module_id != std::numeric_limits<decltype(module_id)>::max());
  IndexType         num_inst = netlist.numInsts();
  IndexType         count    = 0;
  std::vector<bool> visited_mark(num_inst, false);
  auto              IsVisited = [&visited_mark](const Inst &inst) -> bool { return visited_mark[inst.id()] == true; };
  auto              IsChain   = [&module_id](const Inst &inst) -> bool { return inst.attr().modelId() == module_id; };

  chain_insts_.clear();

  openparfPrint(kDebug, "carry_chain_module_name: %s(%i)\n", module_name.c_str(), module_id);

  for (IndexType old_inst_id : new2old_inst_ids_) {
    const Inst            &inst = netlist.inst(old_inst_id);
    std::vector<IndexType> chain_old_inst_ids;
    if (!IsChain(inst) || IsVisited(inst)) continue;
    chain_old_inst_ids = ExtractChainFromOneInst(*this, visited_mark, module_id, inst);
    chain_insts_.pushBackIndexBegin(count);
    for (auto const &old_inst_id : chain_old_inst_ids) {
      auto new_inst_id = old2new_inst_ids_[old_inst_id];
      chain_insts_.pushBack(new_inst_id);
    }
    count += chain_old_inst_ids.size();
  }

  // dump the extracted carry chain.
  if (false) {
    std::ofstream of("carry_chain.txt");
    for (int i = 0; i < chain_insts_.size1(); i++) {
      for (int j = 0; j < chain_insts_.size2(i); j++) {
        auto        new_inst_id = chain_insts_.at(i, j);
        auto        old_inst_id = new2old_inst_ids_[new_inst_id];
        const Inst &inst        = netlist.inst(old_inst_id);
        of << inst.attr().name() << "(" << new_inst_id << ") ";
      }
      of << std::endl;
    }
    of.close();
  }
}

void PlaceDB::buildResource2AreaTypeMapping() {
  auto const &design          = db_->design();