1 files changed, 9 insertions, 0 deletions
diff --git a/common/util.h b/common/util.h
index 34b2ed02..4c60292b 100644
--- a/common/util.h
+++ b/common/util.h
@@ -20,6 +20,7 @@
 #ifndef UTIL_H
 #define UTIL_H
 
+#include <map>
 #include <string>
 #include "nextpnr.h"
 
@@ -56,6 +57,14 @@ bool bool_or_default(const Container &ct, const KeyType &key, bool def = false)
 {
     return bool(int_or_default(ct, key, int(def)));
 };
+
+// Wrap an unordered_map, and allow it to be iterated over sorted by key
+template <typename K, typename V>
+std::map<K, V> sorted(const std::unordered_map<K, V> &orig)
+{
+    return std::map<K, V>(orig.begin(), orig.end());
+};
+
 NEXTPNR_NAMESPACE_END
 
 #endif