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author | Eddie Hung <eddie@fpgeh.com> | 2019-06-13 16:28:11 -0700 |
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committer | Eddie Hung <eddie@fpgeh.com> | 2019-06-13 16:28:11 -0700 |
commit | d09d4e0706e806d53b3b83986f49c1d59435d2ed (patch) | |
tree | ca217f461295dda3fa05e9b4d9f43a64120caaf9 /kernel | |
parent | 75d89e56cfd9472605f27570cf2760ff89dc7603 (diff) | |
download | yosys-d09d4e0706e806d53b3b83986f49c1d59435d2ed.tar.gz yosys-d09d4e0706e806d53b3b83986f49c1d59435d2ed.tar.bz2 yosys-d09d4e0706e806d53b3b83986f49c1d59435d2ed.zip |
Move ConstEvalAig to aigerparse.cc
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/consteval.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/kernel/consteval.h b/kernel/consteval.h index e0131b233..154373a8d 100644 --- a/kernel/consteval.h +++ b/kernel/consteval.h @@ -390,163 +390,6 @@ struct ConstEval } }; -struct ConstEvalAig -{ - RTLIL::Module *module; - //SigMap assign_map; - SigMap values_map; - //SigPool stop_signals; - SigSet<RTLIL::Cell*> sig2driver; - //std::set<RTLIL::Cell*> busy; - //std::vector<SigMap> stack; - //RTLIL::State defaultval; - - ConstEvalAig(RTLIL::Module *module /*, RTLIL::State defaultval = RTLIL::State::Sm*/) : module(module) /*, assign_map(module), defaultval(defaultval)*/ - { - CellTypes ct; - ct.setup_internals(); - ct.setup_stdcells(); - - for (auto &it : module->cells_) { - if (!ct.cell_known(it.second->type)) - continue; - for (auto &it2 : it.second->connections()) - if (ct.cell_output(it.second->type, it2.first)) - sig2driver.insert(/*assign_map*/(it2.second), it.second); - } - } - - void clear() - { - values_map.clear(); - //stop_signals.clear(); - } - - //void push() - //{ - // stack.push_back(values_map); - //} - - //void pop() - //{ - // values_map.swap(stack.back()); - // stack.pop_back(); - //} - - void set(RTLIL::SigSpec sig, RTLIL::Const value) - { - //assign_map.apply(sig); -#ifndef NDEBUG - RTLIL::SigSpec current_val = values_map(sig); - for (int i = 0; i < GetSize(current_val); i++) - log_assert(current_val[i].wire != NULL || current_val[i] == value.bits[i]); -#endif - values_map.add(sig, RTLIL::SigSpec(value)); - } - - //void stop(RTLIL::SigSpec sig) - //{ - // assign_map.apply(sig); - // stop_signals.add(sig); - //} - - bool eval(RTLIL::Cell *cell /*, RTLIL::SigSpec &undef*/) - { - RTLIL::SigSpec sig_y = values_map(/*assign_map*/(cell->getPort("\\Y"))); - if (sig_y.is_fully_const()) - return true; - - RTLIL::SigSpec sig_a = cell->getPort("\\A"); - if (sig_a.size() > 0 && !eval(sig_a /*, undef, cell*/)) - return false; - - RTLIL::Const eval_ret; - if (cell->type == "$_NOT_") { - if (sig_a == RTLIL::S0) eval_ret = RTLIL::S1; - else if (sig_a == RTLIL::S1) eval_ret = RTLIL::S0; - } - else if (cell->type == "$_AND_") { - if (sig_a == RTLIL::S0) { - eval_ret = RTLIL::S0; - goto eval_end; - } - - { - RTLIL::SigSpec sig_b = cell->getPort("\\B"); - if (sig_b.size() > 0 && !eval(sig_b /*, undef, cell*/)) - return false; - if (sig_b == RTLIL::S0) { - eval_ret = RTLIL::S0; - goto eval_end; - } - - if (sig_a != RTLIL::State::S1 || sig_b != RTLIL::State::S1) { - eval_ret = RTLIL::State::Sx; - goto eval_end; - } - - eval_ret = RTLIL::State::S1; - } - } - else log_abort(); - - -eval_end: - set(sig_y, eval_ret); - return true; - } - - bool eval(RTLIL::SigSpec &sig /*, RTLIL::SigSpec &undef, RTLIL::Cell *busy_cell = NULL*/) - { - //assign_map.apply(sig); - values_map.apply(sig); - - if (sig.is_fully_const()) - return true; - - //if (stop_signals.check_any(sig)) { - // undef = stop_signals.extract(sig); - // return false; - //} - - //if (busy_cell) { - // if (busy.count(busy_cell) > 0) { - // undef = sig; - // return false; - // } - // busy.insert(busy_cell); - //} - - std::set<RTLIL::Cell*> driver_cells; - sig2driver.find(sig, driver_cells); - for (auto cell : driver_cells) { - if (!eval(cell /*, undef*/)) { - //if (busy_cell) - // busy.erase(busy_cell); - return false; - } - } - - //if (busy_cell) - // busy.erase(busy_cell); - - values_map.apply(sig); - if (sig.is_fully_const()) - return true; - - //for (auto &c : sig.chunks()) - // if (c.wire != NULL) - // undef.append(c); - return false; - } - - //bool eval(RTLIL::SigSpec &sig) - //{ - // RTLIL::SigSpec undef; - // return eval(sig, undef); - //} -}; - YOSYS_NAMESPACE_END #endif |