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-rw-r--r--kernel/rtlil.cc11
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 0e9347267..2aefe30b1 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -2619,7 +2619,16 @@ void RTLIL::Cell::setParam(RTLIL::IdString paramname, RTLIL::Const value)
const RTLIL::Const &RTLIL::Cell::getParam(RTLIL::IdString paramname) const
{
- return parameters.at(paramname);
+ static const RTLIL::Const empty;
+ const auto &it = parameters.find(paramname);
+ if (it != parameters.end())
+ return it->second;
+ if (module && module->design) {
+ RTLIL::Module *m = module->design->module(type);
+ if (m)
+ return m->parameter_default_values.at(paramname, empty);
+ }
+ return empty;
}
void RTLIL::Cell::sort()