From 76494891cfc5b3ba71be32de12df6c21f835a39c Mon Sep 17 00:00:00 2001
From: Geza Lore <gezalore@gmail.com>
Date: Sun, 2 May 2021 11:23:09 +0100
Subject: [PATCH] Speed up V3Width by pulling skip condition before node
 iteration.

---
 src/V3Width.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/V3Width.cpp b/src/V3Width.cpp
index a36501eb1..dc556aa00 100644
--- a/src/V3Width.cpp
+++ b/src/V3Width.cpp
@@ -6125,6 +6125,7 @@ private:
     }
     void userIterateAndNext(AstNode* nodep, WidthVP* vup) {
         if (!nodep) return;
+        if (nodep->didWidth()) return;  // Avoid iterating list we have already iterated
         {
             VL_RESTORER(m_vup);
             m_vup = vup;