1 files changed, 10 insertions, 0 deletions
diff --git a/common/util.h b/common/util.h
index ce2b4da1..540646c7 100644
--- a/common/util.h
+++ b/common/util.h
@@ -263,6 +263,16 @@ template <typename T, typename C = std::less<T>> struct TopoSort
     }
 };
 
+template <typename T> struct reversed_range_t
+{
+    T &obj;
+    explicit reversed_range_t(T &obj) : obj(obj){};
+    auto begin() { return obj.rbegin(); }
+    auto end() { return obj.rend(); }
+};
+
+template <typename T> reversed_range_t<T> reversed_range(T &obj) { return reversed_range_t<T>(obj); }
+
 NEXTPNR_NAMESPACE_END
 
 #endif