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libparse: add LibertyMergedCells, enable multiple -liberty args for dfflibmap and clockgate
This commit is contained in:
Emil J. Tywoniak
parent
60fb241cb3
commit
6edf9c86cb
10 changed files with 317 additions and 77 deletions
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@ -229,7 +229,7 @@ static bool parse_pin(const LibertyAst *cell, const LibertyAst *attr, std::strin
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return false;
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}
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static void find_cell(const LibertyAst *ast, IdString cell_type, bool clkpol, bool has_reset, bool rstpol, bool rstval, bool has_enable, bool enapol, std::vector<std::string> &dont_use_cells)
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static void find_cell(std::vector<const LibertyAst *> cells, IdString cell_type, bool clkpol, bool has_reset, bool rstpol, bool rstval, bool has_enable, bool enapol, std::vector<std::string> &dont_use_cells)
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{
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const LibertyAst *best_cell = nullptr;
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std::map<std::string, char> best_cell_ports;
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@ -237,14 +237,8 @@ static void find_cell(const LibertyAst *ast, IdString cell_type, bool clkpol, bo
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bool best_cell_noninv = false;
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double best_cell_area = 0;
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if (ast->id != "library")
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log_error("Format error in liberty file.\n");
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for (auto cell : ast->children)
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for (auto cell : cells)
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{
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if (cell->id != "cell" || cell->args.size() != 1)
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continue;
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const LibertyAst *dn = cell->find("dont_use");
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if (dn != nullptr && dn->value == "true")
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continue;
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@ -355,7 +349,7 @@ static void find_cell(const LibertyAst *ast, IdString cell_type, bool clkpol, bo
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}
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}
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static void find_cell_sr(const LibertyAst *ast, IdString cell_type, bool clkpol, bool setpol, bool clrpol, bool has_enable, bool enapol, std::vector<std::string> &dont_use_cells)
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static void find_cell_sr(std::vector<const LibertyAst *> cells, IdString cell_type, bool clkpol, bool setpol, bool clrpol, bool has_enable, bool enapol, std::vector<std::string> &dont_use_cells)
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{
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const LibertyAst *best_cell = nullptr;
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std::map<std::string, char> best_cell_ports;
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@ -365,14 +359,8 @@ static void find_cell_sr(const LibertyAst *ast, IdString cell_type, bool clkpol,
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log_assert(!enapol && "set/reset cell with enable is unimplemented due to lack of cells for testing");
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if (ast->id != "library")
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log_error("Format error in liberty file.\n");
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for (auto cell : ast->children)
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for (auto cell : cells)
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{
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if (cell->id != "cell" || cell->args.size() != 1)
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continue;
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const LibertyAst *dn = cell->find("dont_use");
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if (dn != nullptr && dn->value == "true")
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continue;
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@ -561,7 +549,7 @@ struct DfflibmapPass : public Pass {
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log(" dfflibmap [-prepare] [-map-only] [-info] [-dont_use <cell_name>] -liberty <file> [selection]\n");
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log("\n");
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log("Map internal flip-flop cells to the flip-flop cells in the technology\n");
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log("library specified in the given liberty file.\n");
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log("library specified in the given liberty files.\n");
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log("\n");
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log("This pass may add inverters as needed. Therefore it is recommended to\n");
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log("first run this pass and then map the logic paths to the target technology.\n");
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@ -590,11 +578,11 @@ struct DfflibmapPass : public Pass {
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log_header(design, "Executing DFFLIBMAP pass (mapping DFF cells to sequential cells from liberty file).\n");
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log_push();
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std::string liberty_file;
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bool prepare_mode = false;
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bool map_only_mode = false;
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bool info_mode = false;
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std::vector<std::string> liberty_files;
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std::vector<std::string> dont_use_cells;
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size_t argidx;
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@ -602,8 +590,9 @@ struct DfflibmapPass : public Pass {
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{
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std::string arg = args[argidx];
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if (arg == "-liberty" && argidx+1 < args.size()) {
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liberty_file = args[++argidx];
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std::string liberty_file = args[++argidx];
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rewrite_filename(liberty_file);
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liberty_files.push_back(liberty_file);
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continue;
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}
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if (arg == "-prepare") {
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@ -636,41 +625,45 @@ struct DfflibmapPass : public Pass {
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if (modes > 1)
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log_cmd_error("Only one of -prepare, -map-only, or -info options should be given!\n");
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if (liberty_file.empty())
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if (liberty_files.empty())
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log_cmd_error("Missing `-liberty liberty_file' option!\n");
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std::ifstream f;
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f.open(liberty_file.c_str());
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if (f.fail())
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log_cmd_error("Can't open liberty file `%s': %s\n", liberty_file.c_str(), strerror(errno));
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LibertyParser libparser(f);
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f.close();
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LibertyMergedCells merged;
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for (auto path : liberty_files) {
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std::ifstream f;
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f.open(path.c_str());
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if (f.fail())
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log_cmd_error("Can't open liberty file `%s': %s\n", path.c_str(), strerror(errno));
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LibertyParser p(f);
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merged.merge(p);
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f.close();
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}
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find_cell(libparser.ast, ID($_DFF_N_), false, false, false, false, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_P_), true, false, false, false, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_N_), false, false, false, false, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_P_), true, false, false, false, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_NN0_), false, true, false, false, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_NN1_), false, true, false, true, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_NP0_), false, true, true, false, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_NP1_), false, true, true, true, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_PN0_), true, true, false, false, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_PN1_), true, true, false, true, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_PP0_), true, true, true, false, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFF_PP1_), true, true, true, true, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_NN0_), false, true, false, false, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_NN1_), false, true, false, true, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_NP0_), false, true, true, false, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_NP1_), false, true, true, true, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_PN0_), true, true, false, false, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_PN1_), true, true, false, true, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_PP0_), true, true, true, false, false, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFF_PP1_), true, true, true, true, false, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFFE_NN_), false, false, false, false, true, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFFE_NP_), false, false, false, false, true, true, dont_use_cells);
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find_cell(libparser.ast, ID($_DFFE_PN_), true, false, false, false, true, false, dont_use_cells);
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find_cell(libparser.ast, ID($_DFFE_PP_), true, false, false, false, true, true, dont_use_cells);
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find_cell(merged.cells, ID($_DFFE_NN_), false, false, false, false, true, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFFE_NP_), false, false, false, false, true, true, dont_use_cells);
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find_cell(merged.cells, ID($_DFFE_PN_), true, false, false, false, true, false, dont_use_cells);
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find_cell(merged.cells, ID($_DFFE_PP_), true, false, false, false, true, true, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_NNN_), false, false, false, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_NNP_), false, false, true, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_NPN_), false, true, false, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_NPP_), false, true, true, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_PNN_), true, false, false, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_PNP_), true, false, true, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_PPN_), true, true, false, false, false, dont_use_cells);
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find_cell_sr(libparser.ast, ID($_DFFSR_PPP_), true, true, true, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_NNN_), false, false, false, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_NNP_), false, false, true, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_NPN_), false, true, false, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_NPP_), false, true, true, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_PNN_), true, false, false, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_PNP_), true, false, true, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_PPN_), true, true, false, false, false, dont_use_cells);
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find_cell_sr(merged.cells, ID($_DFFSR_PPP_), true, true, true, false, false, dont_use_cells);
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log(" final dff cell mappings:\n");
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logmap_all();
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