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Added various new options to splice command

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This commit is contained in:
Clifford Wolf 2014-02-08 16:37:18 +01:00
parent 0c11d04144
commit 926fa61119
1 changed files with 105 additions and 5 deletions
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110
passes/cmds/splice.cc
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@ -29,6 +29,13 @@ struct SpliceWorker
RTLIL::Design *design;
RTLIL::Module *module;
bool sel_by_cell;
bool sel_by_wire;
bool sel_any_bit;
bool no_outputs;
std::set<std::string> ports;
std::set<std::string> no_ports;
CellTypes ct;
SigMap sigmap;
@ -83,7 +90,7 @@ struct SpliceWorker
RTLIL::SigSpec get_spliced_signal(RTLIL::SigSpec sig)
{
if (sig.width == 0)
if (sig.width == 0 || sig.is_fully_const())
return sig;
if (spliced_signals_cache.count(sig))
@ -174,12 +181,28 @@ struct SpliceWorker
for (size_t i = 0; i < driven_bits.size(); i++)
driven_bits_map[driven_bits[i]] = i;
SigPool selected_bits;
if (!sel_by_cell)
for (auto &it : module->wires)
if (design->selected(module, it.second))
selected_bits.add(sigmap(it.second));
for (auto &it : module->cells) {
if (!design->selected(module, it.second))
if (!sel_by_wire && !design->selected(module, it.second))
continue;
for (auto &conn : it.second->connections)
if (ct.cell_input(it.second->type, conn.first)) {
if (ports.size() > 0 && !ports.count(conn.first))
continue;
if (no_ports.size() > 0 && no_ports.count(conn.first))
continue;
RTLIL::SigSpec sig = sigmap(conn.second);
if (!sel_by_cell) {
if (!sel_any_bit && !selected_bits.check_all(sig))
continue;
if (sel_any_bit && !selected_bits.check_any(sig))
continue;
}
if (driven_chunks.count(sig) > 0)
continue;
conn.second = get_spliced_signal(sig);
@ -189,7 +212,7 @@ struct SpliceWorker
std::vector<std::pair<RTLIL::Wire*, RTLIL::SigSpec>> rework_wires;
for (auto &it : module->wires)
if (it.second->port_output) {
if (!no_outputs && it.second->port_output) {
if (!design->selected(module, it.second))
continue;
RTLIL::SigSpec sig = sigmap(it.second);
@ -228,16 +251,87 @@ struct SplicePass : public Pass {
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" splice [selection]\n");
log(" splice [options] [selection]\n");
log("\n");
log("This command adds $slice and $concat cells to the design to make the splicing\n");
log("of multi-bit signals explicit. This for example is useful for coarse grain\n");
log("synthesis, where dedidacted hardware is needed to splice signals.\n");
log("\n");
log(" -sel_by_cell\n");
log(" only select the cell ports to rewire by the cell. if the selection\n");
log(" contains a cell, than all cell inputs are rewired, if neccessary.\n");
log("\n");
log(" -sel_by_wire\n");
log(" only select the cell ports to rewire by the wire. if the selection\n");
log(" contains a wire, than all cell ports driven by this wire are wired,\n");
log(" if neccessary.\n");
log("\n");
log(" -sel_any_bit\n");
log(" it is sufficient if the driver of any bit of a cell port is selected.\n");
log(" by default all bits must be selected.\n");
log("\n");
log(" -no_outputs\n");
log(" do not rewire selected module outputs.\n");
log("\n");
log(" -port <name>\n");
log(" only rewire cell ports with the specified name. can be used multiple\n");
log(" times. implies -no_output.\n");
log("\n");
log(" -no_port <name>\n");
log(" do not rewire cell ports with the specified name. can be used multiple\n");
log(" times. can not be combined with -port <name>.\n");
log("\n");
log("By default selected output wires and all cell ports of selected cells driven\n");
log("by selected wires are rewired.\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
extra_args(args, 1, design);
bool sel_by_cell = false;
bool sel_by_wire = false;
bool sel_any_bit = false;
bool no_outputs = false;
std::set<std::string> ports, no_ports;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++) {
if (args[argidx] == "-sel_by_cell") {
sel_by_cell = true;
continue;
}
if (args[argidx] == "-sel_by_wire") {
sel_by_wire = true;
continue;
}
if (args[argidx] == "-sel_any_bit") {
sel_any_bit = true;
continue;
}
if (args[argidx] == "-no_outputs") {
no_outputs = true;
continue;
}
if (args[argidx] == "-port" && argidx+1 < args.size()) {
ports.insert(RTLIL::escape_id(args[++argidx]));
no_outputs = true;
continue;
}
if (args[argidx] == "-no_port" && argidx+1 < args.size()) {
no_ports.insert(RTLIL::escape_id(args[++argidx]));
continue;
}
break;
}
extra_args(args, argidx, design);
if (sel_by_cell && sel_by_wire)
log_cmd_error("The options -sel_by_cell and -sel_by_wire are exclusive!\n");
if (sel_by_cell && sel_any_bit)
log_cmd_error("The options -sel_by_cell and -sel_any_bit are exclusive!\n");
if (!ports.empty() && !no_ports.empty())
log_cmd_error("The options -port and -no_port are exclusive!\n");
log_header("Executing SPLICE pass (creating cells for signal splicing).\n");
@ -252,6 +346,12 @@ struct SplicePass : public Pass {
}
SpliceWorker worker(design, mod_it.second);
worker.sel_by_cell = sel_by_cell;
worker.sel_by_wire = sel_by_wire;
worker.sel_any_bit = sel_any_bit;
worker.no_outputs = no_outputs;
worker.ports = ports;
worker.no_ports = no_ports;
worker.run();
}
}