[lib][rr_graph] remove ptc_to_string from rr_graph_builder

Author: amin1377

libs/librrgraph/src/base/rr_graph_builder.cpp

@@ -229,10 +229,6 @@ void RRGraphBuilder::set_node_ptc_nums(RRNodeId node, const std::vector<int>& pt
     node_storage_.set_node_ptc_nums(node, ptc_numbers);
 }
 
-std::string RRGraphBuilder::node_ptc_nums_to_string(RRNodeId node) const {
-    return node_storage_.node_ptc_nums_to_string(node);
-}
-
 bool RRGraphBuilder::node_contain_multiple_ptc(RRNodeId node) const {
     return node_storage_.node_contain_multiple_ptc(node);
 }

libs/librrgraph/src/base/rr_graph_builder.h

@@ -279,9 +279,6 @@ class RRGraphBuilder {
     /** @brief Add a list of ptc numbers to a given node. This function is used by rr graph reader only. */
     void set_node_ptc_nums(RRNodeId node, const std::vector<int>& ptc_numbers);
 
-    /** @brief With a given node, output ptc numbers into a string (use comma as delima). This function is used by rr graph writer only. */
-    std::string node_ptc_nums_to_string(RRNodeId node) const;
-
     /** @brief Identify if a node contains multiple ptc numbers. It is used for tileable RR Graph and mainly used by I/O reader only. */
     bool node_contain_multiple_ptc(RRNodeId node) const;
 

libs/librrgraph/src/base/rr_graph_storage.cpp

@@ -667,23 +667,6 @@ void t_rr_graph_storage::add_node_tilable_track_num(RRNodeId node, size_t node_o
     node_tilable_track_nums_[node][node_offset] = track_id;
 }
 
-std::string t_rr_graph_storage::node_ptc_nums_to_string(RRNodeId node) const {
-    if (node_tilable_track_nums_.empty()) {
-        return std::to_string(size_t(node_ptc_num(node)));
-    }
-    VTR_ASSERT(size_t(node) < node_tilable_track_nums_.size());
-    if (node_tilable_track_nums_[node].empty()) {
-        return std::to_string(size_t(node_ptc_num(node)));
-    }
-    std::string ret;
-    for (size_t iptc = 0; iptc < node_tilable_track_nums_[node].size(); iptc++) {
-        ret += std::to_string(size_t(node_tilable_track_nums_[node][iptc])) + ",";
-    }
-    // Remove the last comma
-    ret.pop_back();
-    return ret;
-}
-
 void t_rr_graph_storage::add_node_side(RRNodeId id, e_side new_side) {
     if (node_type(id) != e_rr_type::IPIN && node_type(id) != e_rr_type::OPIN) {
         VTR_LOG_ERROR("Attempted to set RR node 'side' for non-pin type '%s'", node_type_string(id));

libs/librrgraph/src/base/rr_graph_storage.h

@@ -728,8 +728,6 @@ class t_rr_graph_storage {
         }
     }
 
-    std::string node_ptc_nums_to_string(RRNodeId node) const;
-
     const std::vector<short>& node_tilable_track_nums(RRNodeId node) const {
         return node_tilable_track_nums_[node];
     }

libs/librrgraph/src/io/rr_graph_uxsdcxx_serializer.h

@@ -718,7 +718,7 @@ class RrGraphSerializer final : public uxsd::RrGraphBase<RrGraphContextTypes> {
     }
 
     inline const char* get_node_loc_ptc(const t_rr_node& node) final {
-        temp_string_ = rr_graph_builder_->node_ptc_nums_to_string(node.id());
+        temp_string_ = node_ptc_number_to_string(*rr_graph_, node.id());
         return temp_string_.c_str();
     }
     inline int get_node_loc_layer_low(const t_rr_node& node) final {