diff options
Diffstat (limited to 'passes/proc/proc_mux.cc')
| -rw-r--r-- | passes/proc/proc_mux.cc | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/passes/proc/proc_mux.cc b/passes/proc/proc_mux.cc index 4d50597d1..75ca4727f 100644 --- a/passes/proc/proc_mux.cc +++ b/passes/proc/proc_mux.cc @@ -279,7 +279,17 @@ static void proc_mux(RTLIL::Module *mod, RTLIL::Process *proc) } struct ProcMuxPass : public Pass { - ProcMuxPass() : Pass("proc_mux") { } + ProcMuxPass() : Pass("proc_mux", "convert decision trees to multiplexers") { } + virtual void help() + { + // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| + log("\n"); + log(" proc_mux [selection]\n"); + log("\n"); + log("This pass converts the decision trees in processes (originating from if-else\n"); + log("and case statements) to trees of multiplexer cells.\n"); + log("\n"); + } virtual void execute(std::vector<std::string> args, RTLIL::Design *design) { log_header("Executing PROC_MUX pass (convert decision trees to multiplexers).\n"); @@ -287,8 +297,10 @@ struct ProcMuxPass : public Pass { extra_args(args, 1, design); for (auto &mod_it : design->modules) - for (auto &proc_it : mod_it.second->processes) - proc_mux(mod_it.second, proc_it.second); + if (design->selected(mod_it.second)) + for (auto &proc_it : mod_it.second->processes) + if (design->selected(mod_it.second, proc_it.second)) + proc_mux(mod_it.second, proc_it.second); } } ProcMuxPass; |