Remove hacky wideports_split from abc9
[yosys.git] / kernel / cost.h
index 7d7822fa035563025750453dcae3b57cd639e2ae..41a09eb6334bdcd63a363adb5f7566a4e551c7f3 100644 (file)
@@ -26,8 +26,55 @@ YOSYS_NAMESPACE_BEGIN
 
 int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr);
 
-int get_cell_cost(RTLIL::IdString type, const dict<RTLIL::IdString, RTLIL::Const> &parameters = dict<RTLIL::IdString, RTLIL::Const>(),
-               RTLIL::Design *design = nullptr, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr);
+inline int get_cell_cost(RTLIL::IdString type, const dict<RTLIL::IdString, RTLIL::Const> &parameters = dict<RTLIL::IdString, RTLIL::Const>(),
+               RTLIL::Design *design = nullptr, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr)
+{
+       static dict<RTLIL::IdString, int> gate_cost = {
+               { "$_BUF_",    1 },
+               { "$_NOT_",    2 },
+               { "$_AND_",    4 },
+               { "$_NAND_",   4 },
+               { "$_OR_",     4 },
+               { "$_NOR_",    4 },
+               { "$_ANDNOT_", 4 },
+               { "$_ORNOT_",  4 },
+               { "$_XOR_",    8 },
+               { "$_XNOR_",   8 },
+               { "$_AOI3_",   6 },
+               { "$_OAI3_",   6 },
+               { "$_AOI4_",   8 },
+               { "$_OAI4_",   8 },
+               { "$_MUX_",    4 }
+       };
+
+       if (gate_cost.count(type))
+               return gate_cost.at(type);
+
+       if (parameters.empty() && design && design->module(type))
+       {
+               RTLIL::Module *mod = design->module(type);
+
+               if (mod->attributes.count("\\cost"))
+                       return mod->attributes.at("\\cost").as_int();
+
+               dict<RTLIL::IdString, int> local_mod_cost_cache;
+               if (mod_cost_cache == nullptr)
+                       mod_cost_cache = &local_mod_cost_cache;
+
+               if (mod_cost_cache->count(mod->name))
+                       return mod_cost_cache->at(mod->name);
+
+               int module_cost = 1;
+               for (auto c : mod->cells())
+                       module_cost += get_cell_cost(c, mod_cost_cache);
+
+               (*mod_cost_cache)[mod->name] = module_cost;
+               return module_cost;
+       }
+
+       log_warning("Can't determine cost of %s cell (%d parameters).\n", log_id(type), GetSize(parameters));
+       return 1;
+}
 
 inline int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache)
 {