mirror of https://github.com/YosysHQ/yosys.git
1326 lines
42 KiB
C++
1326 lines
42 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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// [[CITE]] ABC
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// Berkeley Logic Synthesis and Verification Group, ABC: A System for Sequential Synthesis and Verification
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// http://www.eecs.berkeley.edu/~alanmi/abc/
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// [[CITE]] Berkeley Logic Interchange Format (BLIF)
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// University of California. Berkeley. July 28, 1992
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// http://www.ece.cmu.edu/~ee760/760docs/blif.pdf
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// [[CITE]] Kahn's Topological sorting algorithm
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// Kahn, Arthur B. (1962), "Topological sorting of large networks", Communications of the ACM 5 (11): 558–562, doi:10.1145/368996.369025
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// http://en.wikipedia.org/wiki/Topological_sorting
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#define ABC_COMMAND_LIB "strash; scorr -v; ifraig -v; retime -v {D}; strash; dch -vf; map -v {D}"
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#define ABC_COMMAND_CTR "strash; scorr -v; ifraig -v; retime -v {D}; strash; dch -vf; map -v {D}; buffer -v; upsize -v {D}; dnsize -v {D}; stime -p"
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#define ABC_COMMAND_LUT "strash; scorr -v; ifraig -v; retime -v; strash; dch -vf; if -v"
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#define ABC_COMMAND_DFL "strash; scorr -v; ifraig -v; retime -v; strash; dch -vf; map -v"
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#define ABC_FAST_COMMAND_LIB "retime -v {D}; map -v {D}"
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#define ABC_FAST_COMMAND_CTR "retime -v {D}; map -v {D}; buffer -v; upsize -v {D}; dnsize -v {D}; stime -p"
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#define ABC_FAST_COMMAND_LUT "retime -v; if -v"
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#define ABC_FAST_COMMAND_DFL "retime -v; map -v"
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#include "kernel/register.h"
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#include "kernel/sigtools.h"
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#include "kernel/cost.h"
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#include "kernel/log.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <cerrno>
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#include <sstream>
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#include <climits>
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#ifndef _WIN32
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# include <unistd.h>
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# include <dirent.h>
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#endif
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#include "blifparse.h"
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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enum class gate_type_t {
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G_NONE,
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G_FF,
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G_BUF,
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G_NOT,
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G_AND,
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G_NAND,
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G_OR,
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G_NOR,
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G_XOR,
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G_XNOR,
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G_MUX,
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G_AOI3,
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G_OAI3,
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G_AOI4,
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G_OAI4
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};
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#define G(_name) gate_type_t::G_ ## _name
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struct gate_t
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{
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int id;
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gate_type_t type;
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int in1, in2, in3, in4;
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bool is_port;
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RTLIL::SigBit bit;
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};
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int map_autoidx;
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SigMap assign_map;
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RTLIL::Module *module;
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std::vector<gate_t> signal_list;
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std::map<RTLIL::SigBit, int> signal_map;
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bool clk_polarity, en_polarity;
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RTLIL::SigSpec clk_sig, en_sig;
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int map_signal(RTLIL::SigBit bit, gate_type_t gate_type = G(NONE), int in1 = -1, int in2 = -1, int in3 = -1, int in4 = -1)
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{
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assign_map.apply(bit);
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if (signal_map.count(bit) == 0) {
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gate_t gate;
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gate.id = signal_list.size();
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gate.type = G(NONE);
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gate.in1 = -1;
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gate.in2 = -1;
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gate.in3 = -1;
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gate.in4 = -1;
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gate.is_port = false;
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gate.bit = bit;
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signal_list.push_back(gate);
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signal_map[bit] = gate.id;
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}
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gate_t &gate = signal_list[signal_map[bit]];
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if (gate_type != G(NONE))
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gate.type = gate_type;
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if (in1 >= 0)
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gate.in1 = in1;
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if (in2 >= 0)
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gate.in2 = in2;
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if (in3 >= 0)
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gate.in3 = in3;
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if (in4 >= 0)
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gate.in4 = in4;
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return gate.id;
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}
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void mark_port(RTLIL::SigSpec sig)
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{
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for (auto &bit : assign_map(sig))
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if (bit.wire != NULL && signal_map.count(bit) > 0)
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signal_list[signal_map[bit]].is_port = true;
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}
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void extract_cell(RTLIL::Cell *cell, bool keepff)
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{
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if (cell->type == "$_DFF_N_" || cell->type == "$_DFF_P_")
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{
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if (clk_polarity != (cell->type == "$_DFF_P_"))
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return;
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if (clk_sig != assign_map(cell->getPort("\\C")))
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return;
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if (GetSize(en_sig) != 0)
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return;
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goto matching_dff;
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}
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if (cell->type == "$_DFFE_NN_" || cell->type == "$_DFFE_NP_" || cell->type == "$_DFFE_PN_" || cell->type == "$_DFFE_PP_")
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{
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if (clk_polarity != (cell->type == "$_DFFE_PN_" || cell->type == "$_DFFE_PP_"))
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return;
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if (en_polarity != (cell->type == "$_DFFE_NP_" || cell->type == "$_DFFE_PP_"))
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return;
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if (clk_sig != assign_map(cell->getPort("\\C")))
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return;
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if (en_sig != assign_map(cell->getPort("\\E")))
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return;
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goto matching_dff;
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}
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if (0) {
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matching_dff:
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RTLIL::SigSpec sig_d = cell->getPort("\\D");
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RTLIL::SigSpec sig_q = cell->getPort("\\Q");
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if (keepff)
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for (auto &c : sig_q.chunks())
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if (c.wire != NULL)
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c.wire->attributes["\\keep"] = 1;
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assign_map.apply(sig_d);
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assign_map.apply(sig_q);
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map_signal(sig_q, G(FF), map_signal(sig_d));
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module->remove(cell);
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return;
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}
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if (cell->type.in("$_BUF_", "$_NOT_"))
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{
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RTLIL::SigSpec sig_a = cell->getPort("\\A");
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RTLIL::SigSpec sig_y = cell->getPort("\\Y");
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assign_map.apply(sig_a);
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assign_map.apply(sig_y);
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map_signal(sig_y, cell->type == "$_BUF_" ? G(BUF) : G(NOT), map_signal(sig_a));
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module->remove(cell);
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return;
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}
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if (cell->type.in("$_AND_", "$_NAND_", "$_OR_", "$_NOR_", "$_XOR_", "$_XNOR_"))
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{
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RTLIL::SigSpec sig_a = cell->getPort("\\A");
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RTLIL::SigSpec sig_b = cell->getPort("\\B");
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RTLIL::SigSpec sig_y = cell->getPort("\\Y");
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assign_map.apply(sig_a);
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assign_map.apply(sig_b);
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assign_map.apply(sig_y);
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int mapped_a = map_signal(sig_a);
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int mapped_b = map_signal(sig_b);
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if (cell->type == "$_AND_")
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map_signal(sig_y, G(AND), mapped_a, mapped_b);
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else if (cell->type == "$_NAND_")
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map_signal(sig_y, G(NAND), mapped_a, mapped_b);
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else if (cell->type == "$_OR_")
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map_signal(sig_y, G(OR), mapped_a, mapped_b);
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else if (cell->type == "$_NOR_")
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map_signal(sig_y, G(NOR), mapped_a, mapped_b);
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else if (cell->type == "$_XOR_")
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map_signal(sig_y, G(XOR), mapped_a, mapped_b);
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else if (cell->type == "$_XNOR_")
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map_signal(sig_y, G(XNOR), mapped_a, mapped_b);
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else
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log_abort();
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module->remove(cell);
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return;
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}
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if (cell->type == "$_MUX_")
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{
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RTLIL::SigSpec sig_a = cell->getPort("\\A");
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RTLIL::SigSpec sig_b = cell->getPort("\\B");
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RTLIL::SigSpec sig_s = cell->getPort("\\S");
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RTLIL::SigSpec sig_y = cell->getPort("\\Y");
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assign_map.apply(sig_a);
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assign_map.apply(sig_b);
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assign_map.apply(sig_s);
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assign_map.apply(sig_y);
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int mapped_a = map_signal(sig_a);
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int mapped_b = map_signal(sig_b);
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int mapped_s = map_signal(sig_s);
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map_signal(sig_y, G(MUX), mapped_a, mapped_b, mapped_s);
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module->remove(cell);
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return;
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}
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if (cell->type.in("$_AOI3_", "$_OAI3_"))
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{
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RTLIL::SigSpec sig_a = cell->getPort("\\A");
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RTLIL::SigSpec sig_b = cell->getPort("\\B");
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RTLIL::SigSpec sig_c = cell->getPort("\\C");
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RTLIL::SigSpec sig_y = cell->getPort("\\Y");
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assign_map.apply(sig_a);
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assign_map.apply(sig_b);
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assign_map.apply(sig_c);
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assign_map.apply(sig_y);
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int mapped_a = map_signal(sig_a);
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int mapped_b = map_signal(sig_b);
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int mapped_c = map_signal(sig_c);
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map_signal(sig_y, cell->type == "$_AOI3_" ? G(AOI3) : G(OAI3), mapped_a, mapped_b, mapped_c);
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module->remove(cell);
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return;
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}
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if (cell->type.in("$_AOI4_", "$_OAI4_"))
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{
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RTLIL::SigSpec sig_a = cell->getPort("\\A");
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RTLIL::SigSpec sig_b = cell->getPort("\\B");
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RTLIL::SigSpec sig_c = cell->getPort("\\C");
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RTLIL::SigSpec sig_d = cell->getPort("\\D");
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RTLIL::SigSpec sig_y = cell->getPort("\\Y");
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assign_map.apply(sig_a);
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assign_map.apply(sig_b);
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assign_map.apply(sig_c);
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assign_map.apply(sig_d);
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assign_map.apply(sig_y);
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int mapped_a = map_signal(sig_a);
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int mapped_b = map_signal(sig_b);
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int mapped_c = map_signal(sig_c);
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int mapped_d = map_signal(sig_d);
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map_signal(sig_y, cell->type == "$_AOI4_" ? G(AOI4) : G(OAI4), mapped_a, mapped_b, mapped_c, mapped_d);
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module->remove(cell);
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return;
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}
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}
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std::string remap_name(RTLIL::IdString abc_name)
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{
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std::stringstream sstr;
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sstr << "$abc$" << map_autoidx << "$" << abc_name.substr(1);
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return sstr.str();
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}
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void dump_loop_graph(FILE *f, int &nr, std::map<int, std::set<int>> &edges, std::set<int> &workpool, std::vector<int> &in_counts)
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{
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if (f == NULL)
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return;
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log("Dumping loop state graph to slide %d.\n", ++nr);
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fprintf(f, "digraph \"slide%d\" {\n", nr);
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fprintf(f, " label=\"slide%d\";\n", nr);
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fprintf(f, " rankdir=\"TD\";\n");
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std::set<int> nodes;
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for (auto &e : edges) {
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nodes.insert(e.first);
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for (auto n : e.second)
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nodes.insert(n);
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}
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for (auto n : nodes)
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fprintf(f, " n%d [label=\"%s\\nid=%d, count=%d\"%s];\n", n, log_signal(signal_list[n].bit),
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n, in_counts[n], workpool.count(n) ? ", shape=box" : "");
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for (auto &e : edges)
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for (auto n : e.second)
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fprintf(f, " n%d -> n%d;\n", e.first, n);
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fprintf(f, "}\n");
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}
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void handle_loops()
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{
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// http://en.wikipedia.org/wiki/Topological_sorting
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// (Kahn, Arthur B. (1962), "Topological sorting of large networks")
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std::map<int, std::set<int>> edges;
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std::vector<int> in_edges_count(signal_list.size());
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std::set<int> workpool;
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FILE *dot_f = NULL;
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int dot_nr = 0;
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// uncomment for troubleshooting the loop detection code
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// dot_f = fopen("test.dot", "w");
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for (auto &g : signal_list) {
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if (g.type == G(NONE) || g.type == G(FF)) {
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workpool.insert(g.id);
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} else {
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if (g.in1 >= 0) {
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edges[g.in1].insert(g.id);
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in_edges_count[g.id]++;
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}
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if (g.in2 >= 0 && g.in2 != g.in1) {
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edges[g.in2].insert(g.id);
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in_edges_count[g.id]++;
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}
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if (g.in3 >= 0 && g.in3 != g.in2 && g.in3 != g.in1) {
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edges[g.in3].insert(g.id);
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in_edges_count[g.id]++;
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}
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if (g.in4 >= 0 && g.in4 != g.in3 && g.in4 != g.in2 && g.in4 != g.in1) {
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edges[g.in4].insert(g.id);
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in_edges_count[g.id]++;
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}
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}
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}
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dump_loop_graph(dot_f, dot_nr, edges, workpool, in_edges_count);
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while (workpool.size() > 0)
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{
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int id = *workpool.begin();
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workpool.erase(id);
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// log("Removing non-loop node %d from graph: %s\n", id, log_signal(signal_list[id].bit));
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for (int id2 : edges[id]) {
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log_assert(in_edges_count[id2] > 0);
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if (--in_edges_count[id2] == 0)
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workpool.insert(id2);
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}
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edges.erase(id);
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dump_loop_graph(dot_f, dot_nr, edges, workpool, in_edges_count);
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|
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while (workpool.size() == 0)
|
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{
|
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if (edges.size() == 0)
|
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break;
|
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|
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int id1 = edges.begin()->first;
|
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for (auto &edge_it : edges) {
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int id2 = edge_it.first;
|
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RTLIL::Wire *w1 = signal_list[id1].bit.wire;
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RTLIL::Wire *w2 = signal_list[id2].bit.wire;
|
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if (w1 == NULL)
|
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id1 = id2;
|
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else if (w2 == NULL)
|
||
continue;
|
||
else if (w1->name[0] == '$' && w2->name[0] == '\\')
|
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id1 = id2;
|
||
else if (w1->name[0] == '\\' && w2->name[0] == '$')
|
||
continue;
|
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else if (edges[id1].size() < edges[id2].size())
|
||
id1 = id2;
|
||
else if (edges[id1].size() > edges[id2].size())
|
||
continue;
|
||
else if (w2->name.str() < w1->name.str())
|
||
id1 = id2;
|
||
}
|
||
|
||
if (edges[id1].size() == 0) {
|
||
edges.erase(id1);
|
||
continue;
|
||
}
|
||
|
||
log_assert(signal_list[id1].bit.wire != NULL);
|
||
|
||
std::stringstream sstr;
|
||
sstr << "$abcloop$" << (autoidx++);
|
||
RTLIL::Wire *wire = module->addWire(sstr.str());
|
||
|
||
bool first_line = true;
|
||
for (int id2 : edges[id1]) {
|
||
if (first_line)
|
||
log("Breaking loop using new signal %s: %s -> %s\n", log_signal(RTLIL::SigSpec(wire)),
|
||
log_signal(signal_list[id1].bit), log_signal(signal_list[id2].bit));
|
||
else
|
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log(" %*s %s -> %s\n", int(strlen(log_signal(RTLIL::SigSpec(wire)))), "",
|
||
log_signal(signal_list[id1].bit), log_signal(signal_list[id2].bit));
|
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first_line = false;
|
||
}
|
||
|
||
int id3 = map_signal(RTLIL::SigSpec(wire));
|
||
signal_list[id1].is_port = true;
|
||
signal_list[id3].is_port = true;
|
||
log_assert(id3 == int(in_edges_count.size()));
|
||
in_edges_count.push_back(0);
|
||
workpool.insert(id3);
|
||
|
||
for (int id2 : edges[id1]) {
|
||
if (signal_list[id2].in1 == id1)
|
||
signal_list[id2].in1 = id3;
|
||
if (signal_list[id2].in2 == id1)
|
||
signal_list[id2].in2 = id3;
|
||
if (signal_list[id2].in3 == id1)
|
||
signal_list[id2].in3 = id3;
|
||
if (signal_list[id2].in4 == id1)
|
||
signal_list[id2].in4 = id3;
|
||
}
|
||
edges[id1].swap(edges[id3]);
|
||
|
||
module->connect(RTLIL::SigSig(signal_list[id3].bit, signal_list[id1].bit));
|
||
dump_loop_graph(dot_f, dot_nr, edges, workpool, in_edges_count);
|
||
}
|
||
}
|
||
|
||
if (dot_f != NULL)
|
||
fclose(dot_f);
|
||
}
|
||
|
||
std::string add_echos_to_abc_cmd(std::string str)
|
||
{
|
||
std::string new_str, token;
|
||
for (size_t i = 0; i < str.size(); i++) {
|
||
token += str[i];
|
||
if (str[i] == ';') {
|
||
while (i+1 < str.size() && str[i+1] == ' ')
|
||
i++;
|
||
if (!new_str.empty())
|
||
new_str += "echo; ";
|
||
new_str += "echo + " + token + " " + token + " ";
|
||
token.clear();
|
||
}
|
||
}
|
||
|
||
if (!token.empty()) {
|
||
if (!new_str.empty())
|
||
new_str += "echo; echo + " + token + "; ";
|
||
new_str += token;
|
||
}
|
||
|
||
return new_str;
|
||
}
|
||
|
||
std::string fold_abc_cmd(std::string str)
|
||
{
|
||
std::string token, new_str = " ";
|
||
int char_counter = 10;
|
||
|
||
for (size_t i = 0; i <= str.size(); i++) {
|
||
if (i < str.size())
|
||
token += str[i];
|
||
if (i == str.size() || str[i] == ';') {
|
||
if (char_counter + token.size() > 75)
|
||
new_str += "\n ", char_counter = 14;
|
||
new_str += token, char_counter += token.size();
|
||
token.clear();
|
||
}
|
||
}
|
||
|
||
return new_str;
|
||
}
|
||
|
||
struct abc_output_filter
|
||
{
|
||
bool got_cr;
|
||
int escape_seq_state;
|
||
std::string linebuf;
|
||
|
||
abc_output_filter()
|
||
{
|
||
got_cr = false;
|
||
escape_seq_state = 0;
|
||
}
|
||
|
||
void next_char(char ch)
|
||
{
|
||
if (escape_seq_state == 0 && ch == '\033') {
|
||
escape_seq_state = 1;
|
||
return;
|
||
}
|
||
if (escape_seq_state == 1) {
|
||
escape_seq_state = ch == '[' ? 2 : 0;
|
||
return;
|
||
}
|
||
if (escape_seq_state == 2) {
|
||
if ((ch < '0' || '9' < ch) && ch != ';')
|
||
escape_seq_state = 0;
|
||
return;
|
||
}
|
||
escape_seq_state = 0;
|
||
if (ch == '\r') {
|
||
got_cr = true;
|
||
return;
|
||
}
|
||
if (ch == '\n') {
|
||
log("ABC: %s\n", linebuf.c_str());
|
||
got_cr = false, linebuf.clear();
|
||
return;
|
||
}
|
||
if (got_cr)
|
||
got_cr = false, linebuf.clear();
|
||
linebuf += ch;
|
||
}
|
||
|
||
void next_line(const std::string &line)
|
||
{
|
||
for (char ch : line)
|
||
next_char(ch);
|
||
}
|
||
};
|
||
|
||
void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::string script_file, std::string exe_file,
|
||
std::string liberty_file, std::string constr_file, bool cleanup, int lut_mode, bool dff_mode, std::string clk_str,
|
||
bool keepff, std::string delay_target, bool fast_mode, const std::vector<RTLIL::Cell*> &cells)
|
||
{
|
||
module = current_module;
|
||
map_autoidx = autoidx++;
|
||
|
||
signal_map.clear();
|
||
signal_list.clear();
|
||
|
||
if (clk_str != "$")
|
||
{
|
||
assign_map.set(module);
|
||
|
||
clk_polarity = true;
|
||
clk_sig = RTLIL::SigSpec();
|
||
|
||
en_polarity = true;
|
||
en_sig = RTLIL::SigSpec();
|
||
}
|
||
|
||
std::string tempdir_name = "/tmp/yosys-abc-XXXXXX";
|
||
if (!cleanup)
|
||
tempdir_name[0] = tempdir_name[4] = '_';
|
||
tempdir_name = make_temp_dir(tempdir_name);
|
||
log_header("Extracting gate netlist of module `%s' to `%s/input.blif'..\n", module->name.c_str(), tempdir_name.c_str());
|
||
|
||
std::string abc_script = stringf("read_blif %s/input.blif; ", tempdir_name.c_str());
|
||
|
||
if (!liberty_file.empty()) {
|
||
abc_script += stringf("read_lib -w %s; ", liberty_file.c_str());
|
||
if (!constr_file.empty())
|
||
abc_script += stringf("read_constr -v %s; ", constr_file.c_str());
|
||
} else
|
||
if (lut_mode)
|
||
abc_script += stringf("read_lut %s/lutdefs.txt; ", tempdir_name.c_str());
|
||
else
|
||
abc_script += stringf("read_library %s/stdcells.genlib; ", tempdir_name.c_str());
|
||
|
||
if (!script_file.empty()) {
|
||
if (script_file[0] == '+') {
|
||
for (size_t i = 1; i < script_file.size(); i++)
|
||
if (script_file[i] == '\'')
|
||
abc_script += "'\\''";
|
||
else if (script_file[i] == ',')
|
||
abc_script += " ";
|
||
else
|
||
abc_script += script_file[i];
|
||
} else
|
||
abc_script += stringf("source %s", script_file.c_str());
|
||
} else if (lut_mode)
|
||
abc_script += fast_mode ? ABC_FAST_COMMAND_LUT : ABC_COMMAND_LUT;
|
||
else if (!liberty_file.empty())
|
||
abc_script += constr_file.empty() ? (fast_mode ? ABC_FAST_COMMAND_LIB : ABC_COMMAND_LIB) : (fast_mode ? ABC_FAST_COMMAND_CTR : ABC_COMMAND_CTR);
|
||
else
|
||
abc_script += fast_mode ? ABC_FAST_COMMAND_DFL : ABC_COMMAND_DFL;
|
||
|
||
for (size_t pos = abc_script.find("{D}"); pos != std::string::npos; pos = abc_script.find("{D}", pos))
|
||
abc_script = abc_script.substr(0, pos) + delay_target + abc_script.substr(pos+3);
|
||
|
||
abc_script += stringf("; write_blif %s/output.blif", tempdir_name.c_str());
|
||
abc_script = add_echos_to_abc_cmd(abc_script);
|
||
|
||
for (size_t i = 0; i+1 < abc_script.size(); i++)
|
||
if (abc_script[i] == ';' && abc_script[i+1] == ' ')
|
||
abc_script[i+1] = '\n';
|
||
|
||
FILE *f = fopen(stringf("%s/abc.script", tempdir_name.c_str()).c_str(), "wt");
|
||
fprintf(f, "%s\n", abc_script.c_str());
|
||
fclose(f);
|
||
|
||
if (!clk_str.empty() && clk_str != "$")
|
||
{
|
||
if (clk_str.find(',') != std::string::npos) {
|
||
int pos = clk_str.find(',');
|
||
std::string en_str = clk_str.substr(pos+1);
|
||
clk_str = clk_str.substr(0, pos);
|
||
if (en_str[0] == '!') {
|
||
en_polarity = false;
|
||
en_str = en_str.substr(1);
|
||
}
|
||
if (module->wires_.count(RTLIL::escape_id(en_str)) != 0)
|
||
en_sig = assign_map(RTLIL::SigSpec(module->wires_.at(RTLIL::escape_id(en_str)), 0));
|
||
}
|
||
if (clk_str[0] == '!') {
|
||
clk_polarity = false;
|
||
clk_str = clk_str.substr(1);
|
||
}
|
||
if (module->wires_.count(RTLIL::escape_id(clk_str)) != 0)
|
||
clk_sig = assign_map(RTLIL::SigSpec(module->wires_.at(RTLIL::escape_id(clk_str)), 0));
|
||
}
|
||
|
||
if (dff_mode && clk_sig.empty())
|
||
log_error("Clock domain %s not found.\n", clk_str.c_str());
|
||
|
||
if (dff_mode || !clk_str.empty())
|
||
{
|
||
if (clk_sig.size() == 0)
|
||
log("No%s clock domain found. Not extracting any FF cells.\n", clk_str.empty() ? "" : " matching");
|
||
else {
|
||
log("Found%s %s clock domain: %s", clk_str.empty() ? "" : " matching", clk_polarity ? "posedge" : "negedge", log_signal(clk_sig));
|
||
if (en_sig.size() != 0)
|
||
log(", enabled by %s%s", en_polarity ? "" : "!", log_signal(en_sig));
|
||
log("\n");
|
||
}
|
||
}
|
||
|
||
for (auto c : cells)
|
||
extract_cell(c, keepff);
|
||
|
||
for (auto &wire_it : module->wires_) {
|
||
if (wire_it.second->port_id > 0 || wire_it.second->get_bool_attribute("\\keep"))
|
||
mark_port(RTLIL::SigSpec(wire_it.second));
|
||
}
|
||
|
||
for (auto &cell_it : module->cells_)
|
||
for (auto &port_it : cell_it.second->connections())
|
||
mark_port(port_it.second);
|
||
|
||
if (clk_sig.size() != 0)
|
||
mark_port(clk_sig);
|
||
|
||
if (en_sig.size() != 0)
|
||
mark_port(en_sig);
|
||
|
||
handle_loops();
|
||
|
||
std::string buffer = stringf("%s/input.blif", tempdir_name.c_str());
|
||
f = fopen(buffer.c_str(), "wt");
|
||
if (f == NULL)
|
||
log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
|
||
|
||
fprintf(f, ".model netlist\n");
|
||
|
||
int count_input = 0;
|
||
fprintf(f, ".inputs");
|
||
for (auto &si : signal_list) {
|
||
if (!si.is_port || si.type != G(NONE))
|
||
continue;
|
||
fprintf(f, " n%d", si.id);
|
||
count_input++;
|
||
}
|
||
if (count_input == 0)
|
||
fprintf(f, " dummy_input\n");
|
||
fprintf(f, "\n");
|
||
|
||
int count_output = 0;
|
||
fprintf(f, ".outputs");
|
||
for (auto &si : signal_list) {
|
||
if (!si.is_port || si.type == G(NONE))
|
||
continue;
|
||
fprintf(f, " n%d", si.id);
|
||
count_output++;
|
||
}
|
||
fprintf(f, "\n");
|
||
|
||
for (auto &si : signal_list)
|
||
fprintf(f, "# n%-5d %s\n", si.id, log_signal(si.bit));
|
||
|
||
for (auto &si : signal_list) {
|
||
if (si.bit.wire == NULL) {
|
||
fprintf(f, ".names n%d\n", si.id);
|
||
if (si.bit == RTLIL::State::S1)
|
||
fprintf(f, "1\n");
|
||
}
|
||
}
|
||
|
||
int count_gates = 0;
|
||
for (auto &si : signal_list) {
|
||
if (si.type == G(BUF)) {
|
||
fprintf(f, ".names n%d n%d\n", si.in1, si.id);
|
||
fprintf(f, "1 1\n");
|
||
} else if (si.type == G(NOT)) {
|
||
fprintf(f, ".names n%d n%d\n", si.in1, si.id);
|
||
fprintf(f, "0 1\n");
|
||
} else if (si.type == G(AND)) {
|
||
fprintf(f, ".names n%d n%d n%d\n", si.in1, si.in2, si.id);
|
||
fprintf(f, "11 1\n");
|
||
} else if (si.type == G(NAND)) {
|
||
fprintf(f, ".names n%d n%d n%d\n", si.in1, si.in2, si.id);
|
||
fprintf(f, "0- 1\n");
|
||
fprintf(f, "-0 1\n");
|
||
} else if (si.type == G(OR)) {
|
||
fprintf(f, ".names n%d n%d n%d\n", si.in1, si.in2, si.id);
|
||
fprintf(f, "-1 1\n");
|
||
fprintf(f, "1- 1\n");
|
||
} else if (si.type == G(NOR)) {
|
||
fprintf(f, ".names n%d n%d n%d\n", si.in1, si.in2, si.id);
|
||
fprintf(f, "00 1\n");
|
||
} else if (si.type == G(XOR)) {
|
||
fprintf(f, ".names n%d n%d n%d\n", si.in1, si.in2, si.id);
|
||
fprintf(f, "01 1\n");
|
||
fprintf(f, "10 1\n");
|
||
} else if (si.type == G(XNOR)) {
|
||
fprintf(f, ".names n%d n%d n%d\n", si.in1, si.in2, si.id);
|
||
fprintf(f, "00 1\n");
|
||
fprintf(f, "11 1\n");
|
||
} else if (si.type == G(MUX)) {
|
||
fprintf(f, ".names n%d n%d n%d n%d\n", si.in1, si.in2, si.in3, si.id);
|
||
fprintf(f, "1-0 1\n");
|
||
fprintf(f, "-11 1\n");
|
||
} else if (si.type == G(AOI3)) {
|
||
fprintf(f, ".names n%d n%d n%d n%d\n", si.in1, si.in2, si.in3, si.id);
|
||
fprintf(f, "-00 1\n");
|
||
fprintf(f, "0-0 1\n");
|
||
} else if (si.type == G(OAI3)) {
|
||
fprintf(f, ".names n%d n%d n%d n%d\n", si.in1, si.in2, si.in3, si.id);
|
||
fprintf(f, "00- 1\n");
|
||
fprintf(f, "--0 1\n");
|
||
} else if (si.type == G(AOI4)) {
|
||
fprintf(f, ".names n%d n%d n%d n%d n%d\n", si.in1, si.in2, si.in3, si.in4, si.id);
|
||
fprintf(f, "-0-0 1\n");
|
||
fprintf(f, "-00- 1\n");
|
||
fprintf(f, "0--0 1\n");
|
||
fprintf(f, "0-0- 1\n");
|
||
} else if (si.type == G(OAI4)) {
|
||
fprintf(f, ".names n%d n%d n%d n%d n%d\n", si.in1, si.in2, si.in3, si.in4, si.id);
|
||
fprintf(f, "00-- 1\n");
|
||
fprintf(f, "--00 1\n");
|
||
} else if (si.type == G(FF)) {
|
||
fprintf(f, ".latch n%d n%d\n", si.in1, si.id);
|
||
} else if (si.type != G(NONE))
|
||
log_abort();
|
||
if (si.type != G(NONE))
|
||
count_gates++;
|
||
}
|
||
|
||
fprintf(f, ".end\n");
|
||
fclose(f);
|
||
|
||
log("Extracted %d gates and %d wires to a netlist network with %d inputs and %d outputs.\n",
|
||
count_gates, GetSize(signal_list), count_input, count_output);
|
||
log_push();
|
||
|
||
if (count_output > 0)
|
||
{
|
||
log_header("Executing ABC.\n");
|
||
|
||
buffer = stringf("%s/stdcells.genlib", tempdir_name.c_str());
|
||
f = fopen(buffer.c_str(), "wt");
|
||
if (f == NULL)
|
||
log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
|
||
fprintf(f, "GATE ZERO 1 Y=CONST0;\n");
|
||
fprintf(f, "GATE ONE 1 Y=CONST1;\n");
|
||
fprintf(f, "GATE BUF %d Y=A; PIN * NONINV 1 999 1 0 1 0\n", get_cell_cost("$_BUF_"));
|
||
fprintf(f, "GATE NOT %d Y=!A; PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_NOT_"));
|
||
fprintf(f, "GATE AND %d Y=A*B; PIN * NONINV 1 999 1 0 1 0\n", get_cell_cost("$_AND_"));
|
||
fprintf(f, "GATE NAND %d Y=!(A*B); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_NAND_"));
|
||
fprintf(f, "GATE OR %d Y=A+B; PIN * NONINV 1 999 1 0 1 0\n", get_cell_cost("$_OR_"));
|
||
fprintf(f, "GATE NOR %d Y=!(A+B); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_NOR_"));
|
||
fprintf(f, "GATE XOR %d Y=(A*!B)+(!A*B); PIN * UNKNOWN 1 999 1 0 1 0\n", get_cell_cost("$_XOR_"));
|
||
fprintf(f, "GATE XNOR %d Y=(A*B)+(!A*!B); PIN * UNKNOWN 1 999 1 0 1 0\n", get_cell_cost("$_XNOR_"));
|
||
fprintf(f, "GATE AOI3 %d Y=!((A*B)+C); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_AOI3_"));
|
||
fprintf(f, "GATE OAI3 %d Y=!((A+B)*C); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_OAI3_"));
|
||
fprintf(f, "GATE AOI4 %d Y=!((A*B)+(C*D)); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_AOI4_"));
|
||
fprintf(f, "GATE OAI4 %d Y=!((A+B)*(C+D)); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_OAI4_"));
|
||
fprintf(f, "GATE MUX %d Y=(A*B)+(S*B)+(!S*A); PIN * UNKNOWN 1 999 1 0 1 0\n", get_cell_cost("$_MUX_"));
|
||
fclose(f);
|
||
|
||
if (lut_mode) {
|
||
buffer = stringf("%s/lutdefs.txt", tempdir_name.c_str());
|
||
f = fopen(buffer.c_str(), "wt");
|
||
if (f == NULL)
|
||
log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
|
||
for (int i = 0; i < lut_mode; i++)
|
||
fprintf(f, "%d 1.00 1.00\n", i+1);
|
||
fclose(f);
|
||
}
|
||
|
||
buffer = stringf("%s -s -f %s/abc.script 2>&1", exe_file.c_str(), tempdir_name.c_str());
|
||
log("Running ABC command: %s\n", buffer.c_str());
|
||
|
||
abc_output_filter filt;
|
||
int ret = run_command(buffer, std::bind(&abc_output_filter::next_line, filt, std::placeholders::_1));
|
||
if (ret != 0)
|
||
log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
|
||
|
||
buffer = stringf("%s/%s", tempdir_name.c_str(), "output.blif");
|
||
f = fopen(buffer.c_str(), "rt");
|
||
if (f == NULL)
|
||
log_error("Can't open ABC output file `%s'.\n", buffer.c_str());
|
||
|
||
bool builtin_lib = liberty_file.empty() && script_file.empty() && !lut_mode;
|
||
RTLIL::Design *mapped_design = abc_parse_blif(f, builtin_lib ? "\\DFF" : "\\_dff_");
|
||
|
||
fclose(f);
|
||
|
||
log_header("Re-integrating ABC results.\n");
|
||
RTLIL::Module *mapped_mod = mapped_design->modules_["\\netlist"];
|
||
if (mapped_mod == NULL)
|
||
log_error("ABC output file does not contain a module `netlist'.\n");
|
||
for (auto &it : mapped_mod->wires_) {
|
||
RTLIL::Wire *w = it.second;
|
||
RTLIL::Wire *wire = module->addWire(remap_name(w->name));
|
||
design->select(module, wire);
|
||
}
|
||
|
||
std::map<std::string, int> cell_stats;
|
||
if (builtin_lib)
|
||
{
|
||
for (auto &it : mapped_mod->cells_) {
|
||
RTLIL::Cell *c = it.second;
|
||
cell_stats[RTLIL::unescape_id(c->type)]++;
|
||
if (c->type == "\\ZERO" || c->type == "\\ONE") {
|
||
RTLIL::SigSig conn;
|
||
conn.first = RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]);
|
||
conn.second = RTLIL::SigSpec(c->type == "\\ZERO" ? 0 : 1, 1);
|
||
module->connect(conn);
|
||
continue;
|
||
}
|
||
if (c->type == "\\BUF") {
|
||
RTLIL::SigSig conn;
|
||
conn.first = RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]);
|
||
conn.second = RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]);
|
||
module->connect(conn);
|
||
continue;
|
||
}
|
||
if (c->type == "\\NOT") {
|
||
RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_NOT_");
|
||
cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
|
||
cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
if (c->type == "\\AND" || c->type == "\\OR" || c->type == "\\XOR" || c->type == "\\NAND" || c->type == "\\NOR" || c->type == "\\XNOR") {
|
||
RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_" + c->type.substr(1) + "_");
|
||
cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
|
||
cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
|
||
cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
if (c->type == "\\MUX") {
|
||
RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_MUX_");
|
||
cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
|
||
cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
|
||
cell->setPort("\\S", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\S").as_wire()->name)]));
|
||
cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
if (c->type == "\\AOI3" || c->type == "\\OAI3") {
|
||
RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_" + c->type.substr(1) + "_");
|
||
cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
|
||
cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
|
||
cell->setPort("\\C", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\C").as_wire()->name)]));
|
||
cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
if (c->type == "\\AOI4" || c->type == "\\OAI4") {
|
||
RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_" + c->type.substr(1) + "_");
|
||
cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
|
||
cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
|
||
cell->setPort("\\C", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\C").as_wire()->name)]));
|
||
cell->setPort("\\D", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\D").as_wire()->name)]));
|
||
cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
if (c->type == "\\DFF") {
|
||
log_assert(clk_sig.size() == 1);
|
||
RTLIL::Cell *cell;
|
||
if (en_sig.size() == 0) {
|
||
cell = module->addCell(remap_name(c->name), clk_polarity ? "$_DFF_P_" : "$_DFF_N_");
|
||
} else {
|
||
log_assert(en_sig.size() == 1);
|
||
cell = module->addCell(remap_name(c->name), stringf("$_DFFE_%c%c_", clk_polarity ? 'P' : 'N', en_polarity ? 'P' : 'N'));
|
||
cell->setPort("\\E", en_sig);
|
||
}
|
||
cell->setPort("\\D", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\D").as_wire()->name)]));
|
||
cell->setPort("\\Q", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Q").as_wire()->name)]));
|
||
cell->setPort("\\C", clk_sig);
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
log_abort();
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (auto &it : mapped_mod->cells_)
|
||
{
|
||
RTLIL::Cell *c = it.second;
|
||
cell_stats[RTLIL::unescape_id(c->type)]++;
|
||
if (c->type == "\\_const0_" || c->type == "\\_const1_") {
|
||
RTLIL::SigSig conn;
|
||
conn.first = RTLIL::SigSpec(module->wires_[remap_name(c->connections().begin()->second.as_wire()->name)]);
|
||
conn.second = RTLIL::SigSpec(c->type == "\\_const0_" ? 0 : 1, 1);
|
||
module->connect(conn);
|
||
continue;
|
||
}
|
||
if (c->type == "\\_dff_") {
|
||
log_assert(clk_sig.size() == 1);
|
||
RTLIL::Cell *cell;
|
||
if (en_sig.size() == 0) {
|
||
cell = module->addCell(remap_name(c->name), clk_polarity ? "$_DFF_P_" : "$_DFF_N_");
|
||
} else {
|
||
log_assert(en_sig.size() == 1);
|
||
cell = module->addCell(remap_name(c->name), stringf("$_DFFE_%c%c_", clk_polarity ? 'P' : 'N', en_polarity ? 'P' : 'N'));
|
||
cell->setPort("\\E", en_sig);
|
||
}
|
||
cell->setPort("\\D", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\D").as_wire()->name)]));
|
||
cell->setPort("\\Q", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Q").as_wire()->name)]));
|
||
cell->setPort("\\C", clk_sig);
|
||
design->select(module, cell);
|
||
continue;
|
||
}
|
||
RTLIL::Cell *cell = module->addCell(remap_name(c->name), c->type);
|
||
cell->parameters = c->parameters;
|
||
for (auto &conn : c->connections()) {
|
||
RTLIL::SigSpec newsig;
|
||
for (auto &c : conn.second.chunks()) {
|
||
if (c.width == 0)
|
||
continue;
|
||
log_assert(c.width == 1);
|
||
newsig.append(module->wires_[remap_name(c.wire->name)]);
|
||
}
|
||
cell->setPort(conn.first, newsig);
|
||
}
|
||
design->select(module, cell);
|
||
}
|
||
}
|
||
|
||
for (auto conn : mapped_mod->connections()) {
|
||
if (!conn.first.is_fully_const())
|
||
conn.first = RTLIL::SigSpec(module->wires_[remap_name(conn.first.as_wire()->name)]);
|
||
if (!conn.second.is_fully_const())
|
||
conn.second = RTLIL::SigSpec(module->wires_[remap_name(conn.second.as_wire()->name)]);
|
||
module->connect(conn);
|
||
}
|
||
|
||
for (auto &it : cell_stats)
|
||
log("ABC RESULTS: %15s cells: %8d\n", it.first.c_str(), it.second);
|
||
int in_wires = 0, out_wires = 0;
|
||
for (auto &si : signal_list)
|
||
if (si.is_port) {
|
||
char buffer[100];
|
||
snprintf(buffer, 100, "\\n%d", si.id);
|
||
RTLIL::SigSig conn;
|
||
if (si.type != G(NONE)) {
|
||
conn.first = si.bit;
|
||
conn.second = RTLIL::SigSpec(module->wires_[remap_name(buffer)]);
|
||
out_wires++;
|
||
} else {
|
||
conn.first = RTLIL::SigSpec(module->wires_[remap_name(buffer)]);
|
||
conn.second = si.bit;
|
||
in_wires++;
|
||
}
|
||
module->connect(conn);
|
||
}
|
||
log("ABC RESULTS: internal signals: %8d\n", int(signal_list.size()) - in_wires - out_wires);
|
||
log("ABC RESULTS: input signals: %8d\n", in_wires);
|
||
log("ABC RESULTS: output signals: %8d\n", out_wires);
|
||
|
||
delete mapped_design;
|
||
}
|
||
else
|
||
{
|
||
log("Don't call ABC as there is nothing to map.\n");
|
||
}
|
||
|
||
if (cleanup)
|
||
{
|
||
log_header("Removing temp directory `%s':\n", tempdir_name.c_str());
|
||
remove_directory(tempdir_name);
|
||
}
|
||
|
||
log_pop();
|
||
}
|
||
|
||
struct AbcPass : public Pass {
|
||
AbcPass() : Pass("abc", "use ABC for technology mapping") { }
|
||
virtual void help()
|
||
{
|
||
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
|
||
log("\n");
|
||
log(" abc [options] [selection]\n");
|
||
log("\n");
|
||
log("This pass uses the ABC tool [1] for technology mapping of yosys's internal gate\n");
|
||
log("library to a target architecture.\n");
|
||
log("\n");
|
||
log(" -exe <command>\n");
|
||
log(" use the specified command name instead of \"yosys-abc\" to execute ABC.\n");
|
||
log(" This can e.g. be used to call a specific version of ABC or a wrapper.\n");
|
||
log("\n");
|
||
log(" -script <file>\n");
|
||
log(" use the specified ABC script file instead of the default script.\n");
|
||
log("\n");
|
||
log(" if <file> starts with a plus sign (+), then the rest of the filename\n");
|
||
log(" string is interprated as the command string to be passed to ABC. the\n");
|
||
log(" leading plus sign is removed and all commas (,) in the string are\n");
|
||
log(" replaced with blanks before the string is passed to ABC.\n");
|
||
log("\n");
|
||
log(" if no -script parameter is given, the following scripts are used:\n");
|
||
log("\n");
|
||
log(" for -liberty without -constr:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_COMMAND_LIB).c_str());
|
||
log("\n");
|
||
log(" for -liberty with -constr:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_COMMAND_CTR).c_str());
|
||
log("\n");
|
||
log(" for -lut:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_COMMAND_LUT).c_str());
|
||
log("\n");
|
||
log(" otherwise:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_COMMAND_DFL).c_str());
|
||
log("\n");
|
||
log(" -fast\n");
|
||
log(" use different default scripts that are slightly faster (at the cost\n");
|
||
log(" of output quality):\n");
|
||
log("\n");
|
||
log(" for -liberty without -constr:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_FAST_COMMAND_LIB).c_str());
|
||
log("\n");
|
||
log(" for -liberty with -constr:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_FAST_COMMAND_CTR).c_str());
|
||
log("\n");
|
||
log(" for -lut:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_FAST_COMMAND_LUT).c_str());
|
||
log("\n");
|
||
log(" otherwise:\n");
|
||
log("%s\n", fold_abc_cmd(ABC_FAST_COMMAND_DFL).c_str());
|
||
log("\n");
|
||
log(" -liberty <file>\n");
|
||
log(" generate netlists for the specified cell library (using the liberty\n");
|
||
log(" file format).\n");
|
||
log("\n");
|
||
log(" -constr <file>\n");
|
||
log(" pass this file with timing constraints to ABC. use with -liberty.\n");
|
||
log("\n");
|
||
log(" a constr file contains two lines:\n");
|
||
log(" set_driving_cell <cell_name>\n");
|
||
log(" set_load <floating_point_number>\n");
|
||
log("\n");
|
||
log(" the set_driving_cell statement defines which cell type is assumed to\n");
|
||
log(" drive the primary inputs and the set_load statement sets the load in\n");
|
||
log(" femtofarads for each primary output.\n");
|
||
log("\n");
|
||
log(" -D <picoseconds>\n");
|
||
log(" set delay target. the string {D} in the default scripts above is\n");
|
||
log(" replaced by this option when used, and an empty string otherwise.\n");
|
||
log("\n");
|
||
log(" -lut <width>\n");
|
||
log(" generate netlist using luts of (max) the specified width.\n");
|
||
log("\n");
|
||
log(" -dff\n");
|
||
log(" also pass $_DFF_?_ and $_DFFE_??_ cells through ABC. modules with many\n");
|
||
log(" clock domains are automatically partitioned in clock domains and each\n");
|
||
log(" domain is passed through ABC independently.\n");
|
||
log("\n");
|
||
log(" -clk [!]<clock-signal-name>[,[!]<enable-signal-name>]\n");
|
||
log(" use only the specified clock domain. this is like -dff, but only FF\n");
|
||
log(" cells that belong to the specified clock domain are used.\n");
|
||
log("\n");
|
||
log(" -keepff\n");
|
||
log(" set the \"keep\" attribute on flip-flop output wires. (and thus preserve\n");
|
||
log(" them, for example for equivialence checking.)\n");
|
||
log("\n");
|
||
log(" -nocleanup\n");
|
||
log(" when this option is used, the temporary files created by this pass\n");
|
||
log(" are not removed. this is useful for debugging.\n");
|
||
log("\n");
|
||
log("When neither -liberty nor -lut is used, the Yosys standard cell library is\n");
|
||
log("loaded into ABC before the ABC script is executed.\n");
|
||
log("\n");
|
||
log("This pass does not operate on modules with unprocessed processes in it.\n");
|
||
log("(I.e. the 'proc' pass should be used first to convert processes to netlists.)\n");
|
||
log("\n");
|
||
log("[1] http://www.eecs.berkeley.edu/~alanmi/abc/\n");
|
||
log("\n");
|
||
}
|
||
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
|
||
{
|
||
log_header("Executing ABC pass (technology mapping using ABC).\n");
|
||
log_push();
|
||
|
||
std::string exe_file = proc_self_dirname() + "yosys-abc";
|
||
std::string script_file, liberty_file, constr_file, clk_str, delay_target;
|
||
bool fast_mode = false, dff_mode = false, keepff = false, cleanup = true;
|
||
int lut_mode = 0;
|
||
|
||
#ifdef _WIN32
|
||
if (!check_file_exists(exe_file + ".exe") && check_file_exists(proc_self_dirname() + "..\\yosys-abc.exe"))
|
||
exe_file = proc_self_dirname() + "..\\yosys-abc";
|
||
#endif
|
||
|
||
size_t argidx;
|
||
char pwd [PATH_MAX];
|
||
if (!getcwd(pwd, sizeof(pwd))) {
|
||
log_cmd_error("getcwd failed: %s\n", strerror(errno));
|
||
log_abort();
|
||
}
|
||
for (argidx = 1; argidx < args.size(); argidx++) {
|
||
std::string arg = args[argidx];
|
||
if (arg == "-exe" && argidx+1 < args.size()) {
|
||
exe_file = args[++argidx];
|
||
continue;
|
||
}
|
||
if (arg == "-script" && argidx+1 < args.size()) {
|
||
script_file = args[++argidx];
|
||
if (!script_file.empty() && script_file[0] != '/' && script_file[0] != '+')
|
||
script_file = std::string(pwd) + "/" + script_file;
|
||
continue;
|
||
}
|
||
if (arg == "-liberty" && argidx+1 < args.size()) {
|
||
liberty_file = args[++argidx];
|
||
if (!liberty_file.empty() && liberty_file[0] != '/')
|
||
liberty_file = std::string(pwd) + "/" + liberty_file;
|
||
continue;
|
||
}
|
||
if (arg == "-constr" && argidx+1 < args.size()) {
|
||
constr_file = args[++argidx];
|
||
if (!constr_file.empty() && constr_file[0] != '/')
|
||
constr_file = std::string(pwd) + "/" + constr_file;
|
||
continue;
|
||
}
|
||
if (arg == "-D" && argidx+1 < args.size()) {
|
||
delay_target = "-D " + args[++argidx];
|
||
continue;
|
||
}
|
||
if (arg == "-lut" && argidx+1 < args.size()) {
|
||
lut_mode = atoi(args[++argidx].c_str());
|
||
continue;
|
||
}
|
||
if (arg == "-fast") {
|
||
fast_mode = true;
|
||
continue;
|
||
}
|
||
if (arg == "-dff") {
|
||
dff_mode = true;
|
||
continue;
|
||
}
|
||
if (arg == "-clk" && argidx+1 < args.size()) {
|
||
clk_str = args[++argidx];
|
||
dff_mode = true;
|
||
continue;
|
||
}
|
||
if (arg == "-keepff") {
|
||
keepff = true;
|
||
continue;
|
||
}
|
||
if (arg == "-nocleanup") {
|
||
cleanup = false;
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
extra_args(args, argidx, design);
|
||
|
||
if (lut_mode != 0 && !liberty_file.empty())
|
||
log_cmd_error("Got -lut and -liberty! This two options are exclusive.\n");
|
||
if (!constr_file.empty() && liberty_file.empty())
|
||
log_cmd_error("Got -constr but no -liberty!\n");
|
||
|
||
for (auto mod : design->selected_modules())
|
||
if (mod->processes.size() > 0)
|
||
log("Skipping module %s as it contains processes.\n", log_id(mod));
|
||
else if (!dff_mode || !clk_str.empty())
|
||
abc_module(design, mod, script_file, exe_file, liberty_file, constr_file, cleanup, lut_mode, dff_mode, clk_str, keepff, delay_target, fast_mode, mod->selected_cells());
|
||
else
|
||
{
|
||
assign_map.set(mod);
|
||
|
||
std::vector<RTLIL::Cell*> all_cells = mod->selected_cells();
|
||
std::set<RTLIL::Cell*> unassigned_cells(all_cells.begin(), all_cells.end());
|
||
std::set<RTLIL::Cell*> expand_queue, next_expand_queue;
|
||
|
||
typedef std::tuple<bool, RTLIL::SigSpec, bool, RTLIL::SigSpec> clkdomain_t;
|
||
std::map<clkdomain_t, std::vector<RTLIL::Cell*>> assigned_cells;
|
||
std::map<RTLIL::Cell*, clkdomain_t> assigned_cells_reverse;
|
||
|
||
std::map<RTLIL::Cell*, std::set<RTLIL::SigBit>> cell_to_bit;
|
||
std::map<RTLIL::SigBit, std::set<RTLIL::Cell*>> bit_to_cell;
|
||
|
||
for (auto cell : all_cells)
|
||
{
|
||
clkdomain_t key;
|
||
|
||
for (auto &conn : cell->connections())
|
||
for (auto bit : conn.second) {
|
||
bit = assign_map(bit);
|
||
if (bit.wire != nullptr) {
|
||
cell_to_bit[cell].insert(bit);
|
||
bit_to_cell[bit].insert(cell);
|
||
}
|
||
}
|
||
|
||
if (cell->type == "$_DFF_N_" || cell->type == "$_DFF_P_")
|
||
{
|
||
key = clkdomain_t(cell->type == "$_DFF_P_", assign_map(cell->getPort("\\C")), true, RTLIL::SigSpec());
|
||
}
|
||
else
|
||
if (cell->type == "$_DFFE_NN_" || cell->type == "$_DFFE_NP_" || cell->type == "$_DFFE_PN_" || cell->type == "$_DFFE_PP_")
|
||
{
|
||
bool this_clk_pol = cell->type == "$_DFFE_PN_" || cell->type == "$_DFFE_PP_";
|
||
bool this_en_pol = cell->type == "$_DFFE_NP_" || cell->type == "$_DFFE_PP_";
|
||
key = clkdomain_t(this_clk_pol, assign_map(cell->getPort("\\C")), this_en_pol, assign_map(cell->getPort("\\E")));
|
||
}
|
||
else
|
||
continue;
|
||
|
||
unassigned_cells.erase(cell);
|
||
expand_queue.insert(cell);
|
||
|
||
assigned_cells[key].push_back(cell);
|
||
assigned_cells_reverse[cell] = key;
|
||
}
|
||
|
||
while (!expand_queue.empty())
|
||
{
|
||
RTLIL::Cell *cell = *expand_queue.begin();
|
||
clkdomain_t key = assigned_cells_reverse.at(cell);
|
||
expand_queue.erase(cell);
|
||
|
||
for (auto bit : cell_to_bit.at(cell)) {
|
||
for (auto c : bit_to_cell[bit])
|
||
if (unassigned_cells.count(c)) {
|
||
unassigned_cells.erase(c);
|
||
next_expand_queue.insert(c);
|
||
assigned_cells[key].push_back(c);
|
||
assigned_cells_reverse[c] = key;
|
||
}
|
||
bit_to_cell[bit].clear();
|
||
}
|
||
|
||
if (expand_queue.empty())
|
||
expand_queue.swap(next_expand_queue);
|
||
}
|
||
|
||
clkdomain_t key(true, RTLIL::SigSpec(), true, RTLIL::SigSpec());
|
||
for (auto cell : unassigned_cells) {
|
||
assigned_cells[key].push_back(cell);
|
||
assigned_cells_reverse[cell] = key;
|
||
}
|
||
|
||
log_header("Summary of detected clock domains:\n");
|
||
for (auto &it : assigned_cells)
|
||
log(" %d cells in clk=%s%s, en=%s%s\n", GetSize(it.second),
|
||
std::get<0>(it.first) ? "" : "!", log_signal(std::get<1>(it.first)),
|
||
std::get<2>(it.first) ? "" : "!", log_signal(std::get<3>(it.first)));
|
||
|
||
for (auto &it : assigned_cells) {
|
||
clk_polarity = std::get<0>(it.first);
|
||
clk_sig = assign_map(std::get<1>(it.first));
|
||
en_polarity = std::get<2>(it.first);
|
||
en_sig = assign_map(std::get<3>(it.first));
|
||
abc_module(design, mod, script_file, exe_file, liberty_file, constr_file, cleanup, lut_mode,
|
||
!clk_sig.empty(), "$", keepff, delay_target, fast_mode, it.second);
|
||
assign_map.set(mod);
|
||
}
|
||
}
|
||
|
||
assign_map.clear();
|
||
signal_list.clear();
|
||
signal_map.clear();
|
||
|
||
log_pop();
|
||
}
|
||
} AbcPass;
|
||
|
||
PRIVATE_NAMESPACE_END
|