diff options
Diffstat (limited to 'common')
-rw-r--r-- | common/place_common.cc | 8 | ||||
-rw-r--r-- | common/place_common.h | 4 | ||||
-rw-r--r-- | common/placer1.cc | 42 |
3 files changed, 38 insertions, 16 deletions
diff --git a/common/place_common.cc b/common/place_common.cc index 0a7b29c7..73a320d0 100644 --- a/common/place_common.cc +++ b/common/place_common.cc @@ -529,4 +529,12 @@ int get_constraints_distance(const Context *ctx, const CellInfo *cell) return dist; } +bool check_cell_bel_region(const CellInfo *cell, BelId bel) +{ + if (cell->region != nullptr && cell->region->constr_bels && !cell->region->bels.count(bel)) + return false; + else + return true; +} + NEXTPNR_NAMESPACE_END diff --git a/common/place_common.h b/common/place_common.h index 79dec067..fa5ce4c2 100644 --- a/common/place_common.h +++ b/common/place_common.h @@ -49,6 +49,10 @@ bool legalise_relative_constraints(Context *ctx); // Get the total distance from satisfied constraints for a cell int get_constraints_distance(const Context *ctx, const CellInfo *cell); + +// Check that a Bel is within the region for a cell +bool check_cell_bel_region(const CellInfo *cell, BelId bel); + NEXTPNR_NAMESPACE_END #endif diff --git a/common/placer1.cc b/common/placer1.cc index dca9089a..416c0d31 100644 --- a/common/placer1.cc +++ b/common/placer1.cc @@ -44,7 +44,6 @@ #include "timing.h" #include "util.h" - namespace std { template <> struct hash<std::pair<NEXTPNR_NAMESPACE_PREFIX IdString, std::size_t>> { @@ -120,7 +119,8 @@ class SAPlacer build_port_index(); } - ~SAPlacer() { + ~SAPlacer() + { for (auto &net : ctx->nets) net.second->udata = old_udata[net.second->udata]; } @@ -275,8 +275,8 @@ class SAPlacer if (ctx->verbose) log("iter #%d: temp = %f, timing cost = " - "%.0f, wirelen = %.0f, dia = %d, Ra = %.02f \n", - iter, temp, double(curr_timing_cost), double(curr_wirelen_cost), diameter, Raccept); + "%.0f, wirelen = %.0f, dia = %d, Ra = %.02f \n", + iter, temp, double(curr_timing_cost), double(curr_wirelen_cost), diameter, Raccept); if (curr_wirelen_cost < 0.95 * avg_wirelen && curr_wirelen_cost > 0) { avg_wirelen = 0.8 * avg_wirelen + 0.2 * curr_wirelen_cost; @@ -301,7 +301,8 @@ class SAPlacer autoplaced.clear(); chain_basis.clear(); for (auto cell : sorted(ctx->cells)) { - if (cell.second->belStrength <= STRENGTH_STRONG && cell.second->constr_parent == nullptr && !cell.second->constr_children.empty()) + if (cell.second->belStrength <= STRENGTH_STRONG && cell.second->constr_parent == nullptr && + !cell.second->constr_children.empty()) chain_basis.push_back(cell.second); else if (cell.second->belStrength < STRENGTH_STRONG) autoplaced.push_back(cell.second); @@ -484,12 +485,14 @@ class SAPlacer return false; } - inline bool is_constrained(CellInfo *cell) { + inline bool is_constrained(CellInfo *cell) + { return cell->constr_parent != nullptr || !cell->constr_children.empty(); } // Swap the Bel of a cell with another, return the original location - BelId swap_cell_bels(CellInfo *cell, BelId newBel) { + BelId swap_cell_bels(CellInfo *cell, BelId newBel) + { BelId oldBel = cell->bel; CellInfo *bound = ctx->getBoundBelCell(newBel); if (bound != nullptr) @@ -502,7 +505,8 @@ class SAPlacer } // Discover the relative positions of all cells in a chain - void discover_chain(Loc baseLoc, CellInfo *cell, std::vector<std::pair<CellInfo*, Loc>> &cell_rel) { + void discover_chain(Loc baseLoc, CellInfo *cell, std::vector<std::pair<CellInfo *, Loc>> &cell_rel) + { Loc cellLoc = ctx->getBelLocation(cell->bel); Loc rel{cellLoc.x - baseLoc.x, cellLoc.y - baseLoc.y, cellLoc.z}; cell_rel.emplace_back(std::make_pair(cell, rel)); @@ -511,10 +515,11 @@ class SAPlacer } // Attempt to swap a chain with a non-chain - bool try_swap_chain(CellInfo *cell, BelId newBase) { + bool try_swap_chain(CellInfo *cell, BelId newBase) + { std::vector<std::pair<CellInfo *, Loc>> cell_rel; std::unordered_set<IdString> cells; - std::vector<std::pair<CellInfo*, BelId>> moves_made; + std::vector<std::pair<CellInfo *, BelId>> moves_made; std::vector<std::pair<CellInfo *, BelId>> dest_bels; double delta = 0; moveChange.reset(); @@ -538,7 +543,8 @@ class SAPlacer CellInfo *bound = ctx->getBoundBelCell(targetBel); // We don't consider swapping chains with other chains, at least for the time being - unless it is // part of this chain - if (bound != nullptr && !cells.count(bound->name) && (bound->belStrength >= STRENGTH_STRONG || is_constrained(bound))) + if (bound != nullptr && !cells.count(bound->name) && + (bound->belStrength >= STRENGTH_STRONG || is_constrained(bound))) return false; dest_bels.emplace_back(std::make_pair(cr.first, targetBel)); } @@ -550,12 +556,14 @@ class SAPlacer moves_made.emplace_back(std::make_pair(db.first, oldBel)); } for (const auto &mm : moves_made) { - if (!ctx->isBelLocationValid(mm.first->bel)) + if (!ctx->isBelLocationValid(mm.first->bel) || !check_cell_bel_region(mm.first, mm.first->bel)) goto swap_fail; if (!ctx->isBelLocationValid(mm.second)) goto swap_fail; - add_move_cell(moveChange, mm.first, mm.second); CellInfo *bound = ctx->getBoundBelCell(mm.second); + if (bound && !check_cell_bel_region(bound, bound->bel)) + goto swap_fail; + add_move_cell(moveChange, mm.first, mm.second); if (bound != nullptr) add_move_cell(moveChange, bound, mm.first->bel); } @@ -573,7 +581,7 @@ class SAPlacer } commit_cost_changes(moveChange); return true; -swap_fail: + swap_fail: for (const auto &entry : boost::adaptors::reverse(moves_made)) swap_cell_bels(entry.first, entry.second); return false; @@ -605,6 +613,8 @@ swap_fail: if (loc.z != force_z) continue; } + if (!check_cell_bel_region(cell, bel)) + continue; if (locked_bels.find(bel) != locked_bels.end()) continue; return bel; @@ -834,7 +844,7 @@ swap_fail: std::unordered_map<IdString, std::tuple<int, int>> bel_types; std::vector<std::vector<std::vector<std::vector<BelId>>>> fast_bels; std::unordered_set<BelId> locked_bels; - std::vector<NetInfo*> net_by_udata; + std::vector<NetInfo *> net_by_udata; std::vector<decltype(NetInfo::udata)> old_udata; bool require_legal = true; const float legalise_temp = 0.001; @@ -848,7 +858,7 @@ Placer1Cfg::Placer1Cfg(Context *ctx) : Settings(ctx) constraintWeight = get<float>("placer1/constraintWeight", 10); minBelsForGridPick = get<int>("placer1/minBelsForGridPick", 64); budgetBased = get<bool>("placer1/budgetBased", false); - startTemp = get<float> ("placer1/startTemp", 1); + startTemp = get<float>("placer1/startTemp", 1); } bool placer1(Context *ctx, Placer1Cfg cfg) |