From 5cf6223bf310fdf676e190eab0f2f75e6598f356 Mon Sep 17 00:00:00 2001
From: "Emil J. Tywoniak" <emil@tywoniak.eu>
Date: Mon, 22 Jul 2024 17:45:17 +0200
Subject: [PATCH] sigspec: swap disposable for benchmark

---
 kernel/rtlil.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index d3946a620..6f1cda3b0 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -4034,12 +4034,14 @@ void RTLIL::SigSpec::unpack() const
 	cover("kernel.rtlil.sigspec.convert.unpack");
 	log_assert(that->bits_.empty());
 
+	std::vector<SigChunk> disposable;
+
 	that->bits_.reserve(that->width_);
 	for (auto &c : that->chunks_)
 		for (int i = 0; i < c.width; i++)
 			that->bits_.emplace_back(c, i);
 
-	that->chunks_.clear();
+	that->chunks_.swap(disposable);
 	that->hash_ = 0;
 }