From fc5b34254f47ef76150ec9f9edc85cda20681656 Mon Sep 17 00:00:00 2001
From: Matt Johnston <matt@codeconstruct.com.au>
Date: Fri, 10 Dec 2021 22:10:33 +0800
Subject: [PATCH] ecp5: Keep "visited" local

Otherwise it keeps growing boundless and slows down small arcs
---
 common/router1.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/common/router1.cc b/common/router1.cc
index c8585b0b..0ff2bedd 100644
--- a/common/router1.cc
+++ b/common/router1.cc
@@ -108,7 +108,6 @@ struct Router1
     dict<arc_key, pool<WireId>> arc_to_wires;
     pool<arc_key> queued_arcs;
 
-    dict<WireId, QueuedWire> visited;
     std::priority_queue<QueuedWire, std::vector<QueuedWire>, QueuedWire::Greater> queue;
 
     dict<WireId, int> wireScores;
@@ -503,7 +502,7 @@ struct Router1
             std::priority_queue<QueuedWire, std::vector<QueuedWire>, QueuedWire::Greater> new_queue;
             queue.swap(new_queue);
         }
-        visited.clear();
+        dict<WireId, QueuedWire> visited;
 
         // A* main loop