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-rw-r--r--passes/hierarchy/hierarchy.cc2
-rw-r--r--passes/hierarchy/submod.cc2
2 files changed, 2 insertions, 2 deletions
diff --git a/passes/hierarchy/hierarchy.cc b/passes/hierarchy/hierarchy.cc
index a1361c680..67b57a94d 100644
--- a/passes/hierarchy/hierarchy.cc
+++ b/passes/hierarchy/hierarchy.cc
@@ -117,7 +117,7 @@ static void generate(RTLIL::Design *design, const std::vector<std::string> &cell
RTLIL::Module *mod = new RTLIL::Module;
mod->name = celltype;
mod->attributes["\\blackbox"] = RTLIL::Const(1);
- design->modules_[mod->name] = mod;
+ design->add(mod);
for (auto &decl : ports) {
RTLIL::Wire *wire = mod->addWire(decl.portname, portwidths.at(decl.portname));
diff --git a/passes/hierarchy/submod.cc b/passes/hierarchy/submod.cc
index 84c6b9161..d0c9f4b5a 100644
--- a/passes/hierarchy/submod.cc
+++ b/passes/hierarchy/submod.cc
@@ -105,7 +105,7 @@ struct SubmodWorker
RTLIL::Module *new_mod = new RTLIL::Module;
new_mod->name = submod.full_name;
- design->modules_[new_mod->name] = new_mod;
+ design->add(new_mod);
int port_counter = 1, auto_name_counter = 1;
std::set<std::string> all_wire_names;