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Merge pull request #2337 from YosysHQ/mwk/clean-keep-wire 

opt_clean: Fix module keep rules.
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clairexen 2020-08-20 16:23:55 +02:00 committed by GitHub
parent 799076af24 2ab350a7b0
commit 1d0d9d5c86
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1 changed files with 9 additions and 4 deletions
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13
passes/opt/opt_clean.cc
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@ -55,7 +55,12 @@ struct keep_cache_t
if (!module->get_bool_attribute(ID::keep)) { if (!module->get_bool_attribute(ID::keep)) {
bool found_keep = false; bool found_keep = false;
for (auto cell : module->cells()) for (auto cell : module->cells())
if (query(cell, true /* ignore_specify */)) { if (query(cell, true /* ignore_specify_mem */)) {
found_keep = true;
break;
}
for (auto wire : module->wires())
if (wire->get_bool_attribute(ID::keep)) {
found_keep = true; found_keep = true;
break; break;
} }
@ -65,12 +70,12 @@ struct keep_cache_t
return cache[module]; return cache[module];
} }
bool query(Cell *cell, bool ignore_specify = false) bool query(Cell *cell, bool ignore_specify_mem = false)
{ {
if (cell->type.in(ID($memwr), ID($meminit), ID($assert), ID($assume), ID($live), ID($fair), ID($cover))) if (cell->type.in(ID($assert), ID($assume), ID($live), ID($fair), ID($cover)))
return true; return true;
if (!ignore_specify && cell->type.in(ID($specify2), ID($specify3), ID($specrule))) if (!ignore_specify_mem && cell->type.in(ID($memwr), ID($meminit), ID($specify2), ID($specify3), ID($specrule)))
return true; return true;
if (cell->has_keep_attr()) if (cell->has_keep_attr())