From 105c591bbe04c84d809ef6025a14000cc74b096b Mon Sep 17 00:00:00 2001
From: "Emil J. Tywoniak" <emil@tywoniak.eu>
Date: Thu, 27 Nov 2025 02:53:29 +0100
Subject: [PATCH] newcelltypes: use unordered_map

---
 kernel/newcelltypes.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/kernel/newcelltypes.h b/kernel/newcelltypes.h
index e26de0569..c4a4ea329 100644
--- a/kernel/newcelltypes.h
+++ b/kernel/newcelltypes.h
@@ -548,8 +548,13 @@ struct NewCellType {
 };
 
 struct NewCellTypes {
+	struct IdStringHash {
+		std::size_t operator()(const IdString id) const {
+			return static_cast<size_t>(id.hash_top().yield());
+		}
+	};
 	StaticCellTypes::Categories::Category static_cell_types = StaticCellTypes::categories.empty;
-	dict<RTLIL::IdString, NewCellType> custom_cell_types = {};
+	std::unordered_map<RTLIL::IdString, NewCellType, IdStringHash> custom_cell_types {};
 
 	NewCellTypes() {
 		static_cell_types = StaticCellTypes::categories.empty;