aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/cost.h
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/cost.h')
-rw-r--r--kernel/cost.h148
1 files changed, 77 insertions, 71 deletions
diff --git a/kernel/cost.h b/kernel/cost.h
index e8e077ff5..7ff11eba2 100644
--- a/kernel/cost.h
+++ b/kernel/cost.h
@@ -24,86 +24,92 @@
YOSYS_NAMESPACE_BEGIN
-int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache = nullptr, bool cmos_cost = false);
-
-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, bool cmos_cost = false)
+struct CellCosts
{
- 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 },
- { "$_MUX_", 4 },
- { "$_NMUX_", 4 }
- };
-
- // match costs in "stat -tech cmos"
- static dict<RTLIL::IdString, int> cmos_gate_cost = {
- { "$_BUF_", 1 },
- { "$_NOT_", 2 },
- { "$_AND_", 6 },
- { "$_NAND_", 4 },
- { "$_OR_", 6 },
- { "$_NOR_", 4 },
- { "$_ANDNOT_", 6 },
- { "$_ORNOT_", 6 },
- { "$_XOR_", 12 },
- { "$_XNOR_", 12 },
- { "$_AOI3_", 6 },
- { "$_OAI3_", 6 },
- { "$_AOI4_", 8 },
- { "$_OAI4_", 8 },
- { "$_MUX_", 12 },
- { "$_NMUX_", 10 }
- };
-
- if (cmos_cost && cmos_gate_cost.count(type))
- return cmos_gate_cost.at(type);
-
- if (gate_cost.count(type))
- return gate_cost.at(type);
-
- if (parameters.empty() && design && design->module(type))
+ static const dict<RTLIL::IdString, int>& default_gate_cost() {
+ static const dict<RTLIL::IdString, int> db = {
+ { "$_BUF_", 1 },
+ { "$_NOT_", 2 },
+ { "$_AND_", 4 },
+ { "$_NAND_", 4 },
+ { "$_OR_", 4 },
+ { "$_NOR_", 4 },
+ { "$_ANDNOT_", 4 },
+ { "$_ORNOT_", 4 },
+ { "$_XOR_", 6 },
+ { "$_XNOR_", 6 },
+ { "$_AOI3_", 6 },
+ { "$_OAI3_", 6 },
+ { "$_AOI4_", 8 },
+ { "$_OAI4_", 8 },
+ { "$_MUX_", 4 },
+ { "$_NMUX_", 4 }
+ };
+ return db;
+ }
+
+ static const dict<RTLIL::IdString, int>& cmos_gate_cost() {
+ static const dict<RTLIL::IdString, int> db = {
+ { "$_BUF_", 1 },
+ { "$_NOT_", 2 },
+ { "$_AND_", 6 },
+ { "$_NAND_", 4 },
+ { "$_OR_", 6 },
+ { "$_NOR_", 4 },
+ { "$_ANDNOT_", 6 },
+ { "$_ORNOT_", 6 },
+ { "$_XOR_", 12 },
+ { "$_XNOR_", 12 },
+ { "$_AOI3_", 6 },
+ { "$_OAI3_", 6 },
+ { "$_AOI4_", 8 },
+ { "$_OAI4_", 8 },
+ { "$_MUX_", 12 },
+ { "$_NMUX_", 10 }
+ };
+ return db;
+ }
+
+ dict<RTLIL::IdString, int> mod_cost_cache;
+ const dict<RTLIL::IdString, int> *gate_cost = nullptr;
+ Design *design = nullptr;
+
+ int get(RTLIL::IdString type) const
{
- RTLIL::Module *mod = design->module(type);
+ if (gate_cost && gate_cost->count(type))
+ return gate_cost->at(type);
- if (mod->attributes.count("\\cost"))
- return mod->attributes.at("\\cost").as_int();
+ log_warning("Can't determine cost of %s cell.\n", log_id(type));
+ return 1;
+ }
- dict<RTLIL::IdString, int> local_mod_cost_cache;
- if (mod_cost_cache == nullptr)
- mod_cost_cache = &local_mod_cost_cache;
+ int get(RTLIL::Cell *cell)
+ {
+ if (gate_cost && gate_cost->count(cell->type))
+ return gate_cost->at(cell->type);
- if (mod_cost_cache->count(mod->name))
- return mod_cost_cache->at(mod->name);
+ if (design && design->module(cell->type) && cell->parameters.empty())
+ {
+ RTLIL::Module *mod = design->module(cell->type);
- int module_cost = 1;
- for (auto c : mod->cells())
- module_cost += get_cell_cost(c, mod_cost_cache);
+ if (mod->attributes.count("\\cost"))
+ return mod->attributes.at("\\cost").as_int();
- (*mod_cost_cache)[mod->name] = module_cost;
- return module_cost;
- }
+ if (mod_cost_cache.count(mod->name))
+ return mod_cost_cache.at(mod->name);
- log_warning("Can't determine cost of %s cell (%d parameters).\n", log_id(type), GetSize(parameters));
- return 1;
-}
+ int module_cost = 1;
+ for (auto c : mod->cells())
+ module_cost += get(c);
-inline int get_cell_cost(RTLIL::Cell *cell, dict<RTLIL::IdString, int> *mod_cost_cache, bool cmos_cost)
-{
- return get_cell_cost(cell->type, cell->parameters, cell->module->design, mod_cost_cache, cmos_cost);
-}
+ mod_cost_cache[mod->name] = module_cost;
+ return module_cost;
+ }
+
+ log_warning("Can't determine cost of %s cell (%d parameters).\n", log_id(cell->type), GetSize(cell->parameters));
+ return 1;
+ }
+};
YOSYS_NAMESPACE_END