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use strong id for nets to be routed in LbRouter

This commit is contained in:
tangxifan 2020-02-19 15:09:25 -07:00
parent 2f1bcdd27d
commit 2b37fcb296
2 changed files with 31 additions and 32 deletions
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38
openfpga/src/repack/lb_router.cpp
View File

@ -140,7 +140,7 @@ bool LbRouter::try_route(const LbRRGraph& lb_rr_graph,
unsigned int inet;
/* Iterate across all nets internal to logic block */
for (inet = 0; inet < lb_nets_.size() && !is_impossible; inet++) {
int idx = inet;
NetId idx = NetId(inet);
if (is_skip_route_net(lb_rr_graph, lb_nets_[idx].rt_tree)) {
continue;
}
@ -202,7 +202,7 @@ bool LbRouter::try_route(const LbRRGraph& lb_rr_graph,
} else {
--inet;
VTR_LOGV(verbosity < 3, "Net '%s' is impossible to route within proposed %s cluster\n",
atom_nlist.net_name(lb_nets_[inet].atom_net_id).c_str(), lb_type_->name);
atom_nlist.net_name(lb_nets_[NetId(inet)].atom_net_id).c_str(), lb_type_->name);
is_routed_ = false;
}
pres_con_fac_ *= params_.pres_fac_mult;
@ -225,8 +225,8 @@ void LbRouter::fix_duplicate_equivalent_pins(const AtomContext& atom_ctx,
for (size_t ilb_net = 0; ilb_net < lb_nets_.size(); ++ilb_net) {
//Collect all the sink terminals indicies which target a particular node
std::map<LbRRNodeId, std::vector<int>> duplicate_terminals;
for (size_t iterm = 1; iterm < lb_nets_[ilb_net].terminals.size(); ++iterm) {
LbRRNodeId node = lb_nets_[ilb_net].terminals[iterm];
for (size_t iterm = 1; iterm < lb_nets_[NetId(ilb_net)].terminals.size(); ++iterm) {
LbRRNodeId node = lb_nets_[NetId(ilb_net)].terminals[iterm];
duplicate_terminals[node].push_back(iterm);
}
@ -238,8 +238,8 @@ void LbRouter::fix_duplicate_equivalent_pins(const AtomContext& atom_ctx,
for (size_t idup_term = 0; idup_term < kv.second.size(); ++idup_term) {
int iterm = kv.second[idup_term]; //The index in terminals which is duplicated
VTR_ASSERT(lb_nets_[ilb_net].atom_pins.size() == lb_nets_[ilb_net].terminals.size());
AtomPinId atom_pin = lb_nets_[ilb_net].atom_pins[iterm];
VTR_ASSERT(lb_nets_[NetId(ilb_net)].atom_pins.size() == lb_nets_[NetId(ilb_net)].terminals.size());
AtomPinId atom_pin = lb_nets_[NetId(ilb_net)].atom_pins[iterm];
VTR_ASSERT(atom_pin);
const t_pb_graph_pin* pb_graph_pin = find_pb_graph_pin(atom_ctx.nlist, atom_ctx.lookup, atom_pin);
@ -255,16 +255,16 @@ void LbRouter::fix_duplicate_equivalent_pins(const AtomContext& atom_ctx,
"Found duplicate nets connected to logically equivalent pins. "
"Remapping intra lb net %d (atom net %zu '%s') from common sink "
"pb_route %d to fixed pin pb_route %d\n",
ilb_net, size_t(lb_nets_[ilb_net].atom_net_id), atom_ctx.nlist.net_name(lb_nets_[ilb_net].atom_net_id).c_str(),
ilb_net, size_t(lb_nets_[NetId(ilb_net)].atom_net_id), atom_ctx.nlist.net_name(lb_nets_[NetId(ilb_net)].atom_net_id).c_str(),
kv.first, size_t(pin_index));
VTR_ASSERT(1 == lb_rr_graph.node_out_edges(pin_index, &(pb_graph_pin->parent_node->pb_type->modes[0])).size());
LbRRNodeId sink_index = lb_rr_graph.edge_sink_node(lb_rr_graph.node_out_edges(pin_index, &(pb_graph_pin->parent_node->pb_type->modes[0]))[0]);
VTR_ASSERT(LB_SINK == lb_rr_graph.node_type(sink_index));
VTR_ASSERT_MSG(sink_index == lb_nets_[ilb_net].terminals[iterm], "Remapped pin must be connected to original sink");
VTR_ASSERT_MSG(sink_index == lb_nets_[NetId(ilb_net)].terminals[iterm], "Remapped pin must be connected to original sink");
//Change the target
lb_nets_[ilb_net].terminals[iterm] = pin_index;
lb_nets_[NetId(ilb_net)].terminals[iterm] = pin_index;
}
}
}
@ -343,7 +343,7 @@ void LbRouter::commit_remove_rt(const LbRRGraph& lb_rr_graph,
}
} else {
incr = -1;
explored_node_tb_[inode].inet = OPEN;
explored_node_tb_[inode].inet = NetId::INVALID();
}
routing_status_[inode].occ += incr;
@ -397,7 +397,7 @@ bool LbRouter::is_skip_route_net(const LbRRGraph& lb_rr_graph,
return true;
}
bool LbRouter::add_to_rt(t_trace* rt, const LbRRNodeId& node_index, const int& irt_net) {
bool LbRouter::add_to_rt(t_trace* rt, const LbRRNodeId& node_index, const NetId& irt_net) {
std::vector<LbRRNodeId> trace_forward;
t_trace* link_node;
t_trace curr_node;
@ -430,7 +430,7 @@ bool LbRouter::add_to_rt(t_trace* rt, const LbRRNodeId& node_index, const int& i
return false;
}
void LbRouter::add_source_to_rt(const int& inet) {
void LbRouter::add_source_to_rt(const NetId& inet) {
/* TODO: Validate net id */
VTR_ASSERT(nullptr == lb_nets_[inet].rt_tree);
lb_nets_[inet].rt_tree = new t_trace;
@ -439,7 +439,7 @@ void LbRouter::add_source_to_rt(const int& inet) {
void LbRouter::expand_rt_rec(t_trace* rt,
const LbRRNodeId& prev_index,
const int& irt_net,
const NetId& irt_net,
const int& explore_id_index) {
t_expansion_node enode;
@ -459,8 +459,8 @@ void LbRouter::expand_rt_rec(t_trace* rt,
}
}
void LbRouter::expand_rt(const int& inet,
const int& irt_net) {
void LbRouter::expand_rt(const NetId& inet,
const NetId& irt_net) {
VTR_ASSERT(pq_.empty());
expand_rt_rec(lb_nets_[inet].rt_tree, LbRRNodeId::INVALID(), irt_net, explore_id_index_);
@ -651,7 +651,7 @@ void LbRouter::reset_explored_node_tb() {
for (t_explored_node_stats& explored_node : explored_node_tb_) {
explored_node.prev_index = LbRRNodeId::INVALID();
explored_node.explored_id = OPEN;
explored_node.inet = OPEN;
explored_node.inet = NetId::INVALID();
explored_node.enqueue_id = OPEN;
explored_node.enqueue_cost = 0;
}
@ -659,8 +659,8 @@ void LbRouter::reset_explored_node_tb() {
void LbRouter::reset_net_rt() {
for (unsigned int inet = 0; inet < lb_nets_.size(); inet++) {
free_net_rt(lb_nets_[inet].rt_tree);
lb_nets_[inet].rt_tree = nullptr;
free_net_rt(lb_nets_[NetId(inet)].rt_tree);
lb_nets_[NetId(inet)].rt_tree = nullptr;
}
}
@ -674,7 +674,7 @@ void LbRouter::reset_routing_status() {
void LbRouter::clear_nets() {
reset_net_rt();
for (unsigned int i = 0; i < lb_nets_.size(); i++) {
lb_nets_[i].terminals.clear();
lb_nets_[NetId(i)].terminals.clear();
}
lb_nets_.clear();
}

25
openfpga/src/repack/lb_router.h
View File

@ -9,6 +9,7 @@
#include <vector>
#include "vtr_vector.h"
#include "vtr_strong_id.h"
#include "physical_types.h"
#include "vpr_context.h"
@ -23,6 +24,9 @@
namespace openfpga {
class LbRouter {
public: /* Strong ids */
struct net_id_tag;
typedef vtr::StrongId<net_id_tag> NetId;
public: /* Intra-Logic Block Routing Data Structures (by instance) */
/**************************************************************************
* A routing traceback data structure, provides a logic cluster_ctx.blocks
@ -123,7 +127,7 @@ class LbRouter {
struct t_explored_node_stats {
LbRRNodeId prev_index; /* Prevous node that drives this one */
int explored_id; /* ID used to determine if this node has been explored */
int inet; /* net index of route tree */
NetId inet; /* net index of route tree */
int enqueue_id; /* ID used ot determine if this node has been pushed on exploration priority queue */
float enqueue_cost; /* cost of node pused on exploration priority queue */
@ -131,7 +135,7 @@ class LbRouter {
prev_index = LbRRNodeId::INVALID();
explored_id = OPEN;
enqueue_id = OPEN;
inet = OPEN;
inet = NetId::INVALID();
enqueue_cost = 0;
}
};
@ -237,14 +241,14 @@ class LbRouter {
const e_commit_remove& op,
std::unordered_map<const t_pb_graph_node*, const t_mode*>& mode_map);
bool is_skip_route_net(const LbRRGraph& lb_rr_graph, t_trace* rt);
bool add_to_rt(t_trace* rt, const LbRRNodeId& node_index, const int& irt_net);
void add_source_to_rt(const int& inet);
bool add_to_rt(t_trace* rt, const LbRRNodeId& node_index, const NetId& irt_net);
void add_source_to_rt(const NetId& inet);
void expand_rt_rec(t_trace* rt,
const LbRRNodeId& prev_index,
const int& irt_net,
const NetId& irt_net,
const int& explore_id_index);
void expand_rt(const int& inet,
const int& irt_net);
void expand_rt(const NetId& inet,
const NetId& irt_net);
void expand_edges(const LbRRGraph& lb_rr_graph,
t_mode* mode,
const LbRRNodeId& cur_inode,
@ -282,12 +286,7 @@ class LbRouter {
private : /* Stores all data needed by intra-logic cluster_ctx.blocks router */
/* Logical Netlist Info */
std::vector<t_net> lb_nets_; /* Pointer to vector of intra logic cluster_ctx.blocks nets and their connections */
/* Saved nets */
std::vector<t_net> saved_lb_nets_; /* Save vector of intra logic cluster_ctx.blocks nets and their connections */
std::map<AtomBlockId, bool> atoms_added_; /* map that records which atoms are added to cluster router */
vtr::vector<NetId, t_net> lb_nets_; /* Pointer to vector of intra logic cluster_ctx.blocks nets and their connections */
/* Logical-to-physical mapping info */
vtr::vector<LbRRNodeId, t_routing_status> routing_status_; /* [0..lb_type_graph->size()-1] Stats for each logic cluster_ctx.blocks rr node instance */