From da923c198e770806a4abb749acc75fa337247920 Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Sun, 25 Oct 2015 14:35:40 +0100 Subject: [PATCH] Added "equiv_add -cell" --- kernel/yosys.h | 4 +- passes/equiv/equiv_add.cc | 125 ++++++++++++++++++++++++++++---------- 2 files changed, 95 insertions(+), 34 deletions(-) diff --git a/kernel/yosys.h b/kernel/yosys.h index af849fca8..80346a47c 100644 --- a/kernel/yosys.h +++ b/kernel/yosys.h @@ -169,7 +169,6 @@ namespace RTLIL { struct IdString; struct Const; struct SigBit; - struct SigChunk; struct SigSpec; struct Wire; struct Cell; @@ -185,7 +184,6 @@ namespace AST { using RTLIL::IdString; using RTLIL::Const; using RTLIL::SigBit; -using RTLIL::SigChunk; using RTLIL::SigSpec; using RTLIL::Wire; using RTLIL::Cell; @@ -244,6 +242,8 @@ YOSYS_NAMESPACE_END YOSYS_NAMESPACE_BEGIN using RTLIL::State; +using RTLIL::SigChunk; +using RTLIL::SigSig; namespace hashlib { template<> struct hash_ops : hash_ops {}; diff --git a/passes/equiv/equiv_add.cc b/passes/equiv/equiv_add.cc index 4ce750b1d..7b8ba9058 100644 --- a/passes/equiv/equiv_add.cc +++ b/passes/equiv/equiv_add.cc @@ -33,56 +33,117 @@ struct EquivAddPass : public Pass { log("\n"); log("This command adds an $equiv cell for the specified signals.\n"); log("\n"); + log("\n"); + log(" equiv_add -cell gold_cell gate_cell\n"); + log("\n"); + log("This command adds $equiv cells for the ports of the specified cells.\n"); + log("\n"); } virtual void execute(std::vector args, Design *design) { - if (GetSize(args) != 3) - cmd_error(args, GetSize(args)-1, "Invalid number of arguments."); - if (design->selected_active_module.empty()) log_cmd_error("This command must be executed in module context!\n"); Module *module = design->module(design->selected_active_module); log_assert(module != nullptr); - SigSpec gold_signal, gate_signal; + if (GetSize(args) == 4 && args[1] == "-cell") + { + Cell *gold_cell = module->cell(RTLIL::escape_id(args[2])); + Cell *gate_cell = module->cell(RTLIL::escape_id(args[3])); - if (!SigSpec::parse(gate_signal, module, args[2])) - log_cmd_error("Error in gate signal: %s\n", args[2].c_str()); + if (gold_cell == nullptr) + log_cmd_error("Can't find gold cell '%s'.\n", args[2].c_str()); - if (!SigSpec::parse_rhs(gate_signal, gold_signal, module, args[1])) - log_cmd_error("Error in gold signal: %s\n", args[1].c_str()); + if (gate_cell == nullptr) + log_cmd_error("Can't find gate cell '%s'.\n", args[3].c_str()); - log_assert(GetSize(gold_signal) == GetSize(gate_signal)); - SigSpec equiv_signal = module->addWire(NEW_ID, GetSize(gold_signal)); + for (auto conn : gold_cell->connections()) + { + auto port = conn.first; + SigSpec gold_sig = gold_cell->getPort(port); + SigSpec gate_sig = gate_cell->getPort(port); + int width = std::min(GetSize(gold_sig), GetSize(gate_sig)); - SigMap sigmap(module); - sigmap.apply(gold_signal); - sigmap.apply(gate_signal); + if (gold_cell->input(port) && gate_cell->input(port)) + { + SigSpec combined_sig = module->addWire(NEW_ID, width); - dict to_equiv_bits; - pool added_equiv_cells; + for (int i = 0; i < width; i++) { + module->addEquiv(NEW_ID, gold_sig[i], gate_sig[i], combined_sig[i]); + gold_sig[i] = gate_sig[i] = combined_sig[i]; + } - for (int i = 0; i < GetSize(gold_signal); i++) { - Cell *equiv_cell = module->addEquiv(NEW_ID, gold_signal[i], gate_signal[i], equiv_signal[i]); - equiv_cell->set_bool_attribute("\\keep"); - to_equiv_bits[gold_signal[i]] = equiv_signal[i]; - to_equiv_bits[gate_signal[i]] = equiv_signal[i]; - added_equiv_cells.insert(equiv_cell); + gold_cell->setPort(port, gold_sig); + gate_cell->setPort(port, gate_sig); + continue; + } + + if (gold_cell->output(port) && gate_cell->output(port)) + { + SigSpec new_gold_wire = module->addWire(NEW_ID, width); + SigSpec new_gate_wire = module->addWire(NEW_ID, width); + SigSig gg_conn; + + for (int i = 0; i < width; i++) { + module->addEquiv(NEW_ID, new_gold_wire[i], new_gold_wire[i], gold_sig[i]); + gg_conn.first.append(gate_sig[i]); + gg_conn.second.append(gold_sig[i]); + gold_sig[i] = new_gold_wire[i]; + gate_sig[i] = new_gate_wire[i]; + } + + module->connect(gg_conn); + gold_cell->setPort(port, gold_sig); + gate_cell->setPort(port, gate_sig); + continue; + } + } } + else + { + if (GetSize(args) != 3) + cmd_error(args, GetSize(args)-1, "Invalid number of arguments."); - for (auto cell : module->cells()) - for (auto conn : cell->connections()) - if (!added_equiv_cells.count(cell) && cell->input(conn.first)) { - SigSpec new_sig; - for (auto bit : conn.second) - if (to_equiv_bits.count(sigmap(bit))) - new_sig.append(to_equiv_bits.at(sigmap(bit))); - else - new_sig.append(bit); - if (conn.second != new_sig) - cell->setPort(conn.first, new_sig); + SigSpec gold_signal, gate_signal; + + if (!SigSpec::parse(gate_signal, module, args[2])) + log_cmd_error("Error in gate signal: %s\n", args[2].c_str()); + + if (!SigSpec::parse_rhs(gate_signal, gold_signal, module, args[1])) + log_cmd_error("Error in gold signal: %s\n", args[1].c_str()); + + log_assert(GetSize(gold_signal) == GetSize(gate_signal)); + SigSpec equiv_signal = module->addWire(NEW_ID, GetSize(gold_signal)); + + SigMap sigmap(module); + sigmap.apply(gold_signal); + sigmap.apply(gate_signal); + + dict to_equiv_bits; + pool added_equiv_cells; + + for (int i = 0; i < GetSize(gold_signal); i++) { + Cell *equiv_cell = module->addEquiv(NEW_ID, gold_signal[i], gate_signal[i], equiv_signal[i]); + equiv_cell->set_bool_attribute("\\keep"); + to_equiv_bits[gold_signal[i]] = equiv_signal[i]; + to_equiv_bits[gate_signal[i]] = equiv_signal[i]; + added_equiv_cells.insert(equiv_cell); } + + for (auto cell : module->cells()) + for (auto conn : cell->connections()) + if (!added_equiv_cells.count(cell) && cell->input(conn.first)) { + SigSpec new_sig; + for (auto bit : conn.second) + if (to_equiv_bits.count(sigmap(bit))) + new_sig.append(to_equiv_bits.at(sigmap(bit))); + else + new_sig.append(bit); + if (conn.second != new_sig) + cell->setPort(conn.first, new_sig); + } + } } } EquivAddPass; -- 2.30.2