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author | Alberto Gonzalez <boqwxp@airmail.cc> | 2020-04-28 06:13:12 +0000 |
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committer | Alberto Gonzalez <boqwxp@airmail.cc> | 2020-07-01 19:51:46 +0000 |
commit | ddfb9f08e20557ab434017a053f14067992b0ea9 (patch) | |
tree | 75dabcbf4130d791a3785f17137f33e5a50ecc08 /passes | |
parent | ca3844d44e07a86d22d6026861cd405f80b0d321 (diff) | |
download | yosys-ddfb9f08e20557ab434017a053f14067992b0ea9.tar.gz yosys-ddfb9f08e20557ab434017a053f14067992b0ea9.tar.bz2 yosys-ddfb9f08e20557ab434017a053f14067992b0ea9.zip |
glift: Add `-create-imprecise` command, rename other commands, and re-work the help text.
Diffstat (limited to 'passes')
-rw-r--r-- | passes/cmds/glift.cc | 82 |
1 files changed, 54 insertions, 28 deletions
diff --git a/passes/cmds/glift.cc b/passes/cmds/glift.cc index b35179fd1..8296e7194 100644 --- a/passes/cmds/glift.cc +++ b/passes/cmds/glift.cc @@ -27,21 +27,28 @@ PRIVATE_NAMESPACE_BEGIN struct GliftPass : public Pass { private: - bool opt_create, opt_sketchify, opt_taintconstants, opt_keepoutputs, opt_nomodeloptimize; + bool opt_create_precise, opt_create_imprecise, opt_create_sketch; + bool opt_taintconstants, opt_keepoutputs, opt_nocostmodel; std::vector<std::string> args; std::vector<std::string>::size_type argidx; std::vector<RTLIL::Wire *> new_taint_outputs; std::vector<RTLIL::SigSpec> meta_mux_selects; RTLIL::Module *module; + const RTLIL::IdString cost_model_wire_name = ID(__glift_weight); + void parse_args() { for (argidx = 1; argidx < args.size(); argidx++) { - if (args[argidx] == "-create") { - opt_create = true; + if (args[argidx] == "-create-precise") { + opt_create_precise = true; + continue; + } + if (args[argidx] == "-create-imprecise") { + opt_create_imprecise = true; continue; } - if (args[argidx] == "-sketchify") { - opt_sketchify = true; + if (args[argidx] == "-create-sketch") { + opt_create_sketch = true; continue; } if (args[argidx] == "-taint-constants") { @@ -52,14 +59,16 @@ struct GliftPass : public Pass { opt_keepoutputs = true; continue; } - if (args[argidx] == "-no-model-optimize") { - opt_nomodeloptimize = true; + if (args[argidx] == "-no-cost-model") { + opt_nocostmodel = true; continue; } break; } - if(!opt_create && !opt_sketchify) log_cmd_error("One of `-create` or `-sketchify` must be specified.\n"); - if(opt_create && opt_sketchify) log_cmd_error("Only one of `-create` or `-sketchify` may be specified.\n"); + if(!opt_create_precise && !opt_create_imprecise && !opt_create_sketch) + log_cmd_error("No command provided. See help for usage.\n"); + if(static_cast<int>(opt_create_precise) + static_cast<int>(opt_create_imprecise) + static_cast<int>(opt_create_sketch) != 1) + log_cmd_error("Only one command may be specified. See help for usage.\n"); } RTLIL::SigSpec get_corresponding_taint_signal(RTLIL::SigSpec sig) { @@ -156,9 +165,11 @@ struct GliftPass : public Pass { for (unsigned int i = 0; i < NUM_PORTS; ++i) port_taints[i] = get_corresponding_taint_signal(ports[i]); - if (opt_create) + if (opt_create_precise) add_precise_GLIFT_logic(cell, ports[A], port_taints[A], ports[B], port_taints[B], port_taints[Y]); - else if (opt_sketchify) { + else if (opt_create_imprecise) + add_imprecise_GLIFT_logic_3(cell, port_taints[A], port_taints[B], port_taints[Y]); + else if (opt_create_sketch) { RTLIL::SigSpec precise_y(module->addWire(cell->name.str() + "_y1", 1)), imprecise_1_y(module->addWire(cell->name.str() + "_y2", 1)), imprecise_2_y(module->addWire(cell->name.str() + "_y3", 1)), @@ -210,7 +221,7 @@ struct GliftPass : public Pass { } //end foreach conn in connections //Create a rough model of area by summing the "weight" score of each meta-mux select: - if (!opt_nomodeloptimize) { + if (!opt_nocostmodel) { std::vector<RTLIL::SigSpec> meta_mux_select_sums; std::vector<RTLIL::SigSpec> meta_mux_select_sums_buf; for (auto &wire : meta_mux_selects) { @@ -228,7 +239,7 @@ struct GliftPass : public Pass { if (meta_mux_select_sums.size() > 0) { meta_mux_select_sums[0].as_wire()->set_bool_attribute("\\minimize"); meta_mux_select_sums[0].as_wire()->set_bool_attribute("\\keep"); - module->rename(meta_mux_select_sums[0].as_wire(), ID(__glift_weight)); + module->rename(meta_mux_select_sums[0].as_wire(), cost_model_wire_name); } } @@ -248,11 +259,12 @@ struct GliftPass : public Pass { } void reset() { - opt_create = false; - opt_sketchify = false; + opt_create_precise = false; + opt_create_imprecise = false; + opt_create_sketch = false; opt_taintconstants = false; opt_keepoutputs = false; - opt_nomodeloptimize = false; + opt_nocostmodel = false; module = nullptr; args.clear(); argidx = 0; @@ -262,28 +274,41 @@ struct GliftPass : public Pass { public: - GliftPass() : Pass("glift", "create and transform GLIFT models"), opt_create(false), opt_sketchify(false), opt_taintconstants(false), opt_keepoutputs(false), opt_nomodeloptimize(false), module(nullptr) { } + GliftPass() : Pass("glift", "create GLIFT models and optimization problems"), opt_create_precise(false), opt_create_imprecise(false), opt_create_sketch(false), opt_taintconstants(false), opt_keepoutputs(false), opt_nocostmodel(false), module(nullptr) { } void help() YS_OVERRIDE { // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| log("\n"); - log(" glift -create|-sketchify [options] [selection]\n"); + log(" glift <command> [options] [selection]\n"); + log("\n"); + log("Augments the current or specified module with gate-level information flow tracking\n"); + log("(GLIFT) logic using the \"constructive mapping\" approach. Also can set up QBF-SAT\n"); + log("optimization problems in order to optimize GLIFT models or trade off precision and\n"); + log("complexity.\n"); log("\n"); - log("Adds, removes, or manipulates gate-level information flow tracking (GLIFT) logic\n"); - log("to the current or specified module.\n"); log("\n"); log("Commands:\n"); log("\n"); - log(" -create\n"); + log(" -create-precise\n"); log(" Replaces the current or specified module with one that has additional \"taint\"\n"); log(" inputs, outputs, and internal nets along with precise taint-tracking logic.\n"); log("\n"); - log(" -sketchify\n"); + log(" -create-imprecise\n"); log(" Replaces the current or specified module with one that has additional \"taint\"\n"); - log(" inputs, outputs, and internal nets along with varying-precision taint-tracking logic.\n"); - log(" Which version of taint tracking logic is used at a given cell is determined by a MUX\n"); - log(" selected by an $anyconst cell.\n"); + log(" inputs, outputs, and internal nets along with imprecise \"All OR\" taint-tracking\n"); + log(" logic.\n"); + log("\n"); + log(" -create-sketch\n"); + log(" Replaces the current or specified module with one that has additional \"taint\"\n"); + log(" inputs, outputs, and internal nets along with varying-precision taint-tracking\n"); + log(" logic. Which version of taint tracking logic is used at a given cell is determined\n"); + log(" by a MUX selected by an $anyconst cell. By default, unless the `-no-cost-model`\n"); + log(" option is provided, an additional wire named `__glift_weight` with the `keep` and\n"); + log(" `minimize` attributes is added to the module along with pmuxes and adders to\n"); + log(" calculate a rough estimate of the number of logic gates in the GLIFT model given\n"); + log(" an assignment for the $anyconst cells.\n"); + log("\n"); log("\n"); log("Options:\n"); log("\n"); @@ -296,9 +321,10 @@ struct GliftPass : public Pass { log(" alongside the orignal outputs.\n"); log(" (default: original module outputs are removed)\n"); log("\n"); - log(" -no-model-optimize\n"); - log(" Do not model imprecise taint tracking logic area and attempt to minimize it.\n"); - log(" (default: model area and give that signal the \"minimize\" attribute)\n"); + log(" -no-cost-model\n"); + log(" Do not model taint tracking logic area and do not create a `__glift_weight` wire.\n"); + log(" Only applicable in combination with `-create-sketch`.\n"); + log(" (default: model area and give that wire the \"keep\" and \"minimize\" attributes)\n"); log("\n"); } |