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-rw-r--r--passes/cmds/glift.cc82
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");
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-04 04:39:11 +0000