From a90d1b5d5ee6f7f1abf72b6a146b43411c6dbcda Mon Sep 17 00:00:00 2001
From: "Emil J. Tywoniak" <emil@tywoniak.eu>
Date: Wed, 15 Apr 2026 17:31:37 +0200
Subject: [PATCH] flatten: disable signorm

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

diff --git a/passes/hierarchy/flatten.cc b/passes/hierarchy/flatten.cc
index 584370304..52a9d5a34 100644
--- a/passes/hierarchy/flatten.cc
+++ b/passes/hierarchy/flatten.cc
@@ -411,6 +411,7 @@ struct FlattenPass : public Pass {
 		extra_args(args, argidx, design);
 
 		bool was_signormed = design->flagSigNormalized;
+		design->sigNormalize(false);
 
 		RTLIL::Module *top = nullptr;
 		if (design->full_selection())