From 4bc1e1d1f1d3f27b3e437591255a38ab647f0453 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Fri, 26 Aug 2022 17:12:56 +0200
Subject: [PATCH] Makes sure to set initial_top when change, fixes #3462

---
 passes/hierarchy/hierarchy.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/passes/hierarchy/hierarchy.cc b/passes/hierarchy/hierarchy.cc
index d27fddf1c..eea6abb04 100644
--- a/passes/hierarchy/hierarchy.cc
+++ b/passes/hierarchy/hierarchy.cc
@@ -1058,6 +1058,7 @@ struct HierarchyPass : public Pass {
 			if (tmp_top_mod != NULL) {
 				if (tmp_top_mod != top_mod){
 					top_mod = tmp_top_mod;
+					top_mod->attributes[ID::initial_top] = RTLIL::Const(1);
 					did_something = true;
 				}
 			}