Re-added SigMap::allbits()

kernel/hashlib.h

@@ -935,6 +935,8 @@ class mfp
 	mutable std::vector<int> parents;
 
 public:
+	typedef typename idict<K, 0, OPS>::const_iterator const_iterator;
+
 	int operator()(const K &key) const
 	{
 		int i = database(key);
@@ -1014,6 +1016,9 @@ public:
 	size_t size() const { return database.size(); }
 	bool empty() const { return database.empty(); }
 	void clear() { database.clear(); parents.clear(); }
+
+	const_iterator begin() const { return database.begin(); }
+	const_iterator end() const { return database.end(); }
 };
 
 } /* namespace hashlib */

kernel/sigtools.h

@@ -310,6 +310,15 @@ struct SigMap
 		apply(sig);
 		return sig;
 	}
+
+	RTLIL::SigSpec allbits() const
+	{
+		RTLIL::SigSpec sig;
+		for (auto &bit : database)
+			if (bit.wire != nullptr)
+				sig.append(bit);
+		return sig;
+	}
 };
 
 YOSYS_NAMESPACE_END