From 3c70b297c7be12b7d7e120de04a38f40b600928b Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Sat, 25 Jan 2020 09:14:03 -0500
Subject: Bug 1430951 - Avoid element name atomizing to improve performance of
 LookupCustomElementDefinition

Since we are dealing with the element (nodeInfo->LocalName() and NameAtom() are the same value), we could use nodeInfo->NameAtom() instead.

Tag UXP Issue #1344
---
 dom/html/nsHTMLContentSink.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'dom/html/nsHTMLContentSink.cpp')

diff --git a/dom/html/nsHTMLContentSink.cpp b/dom/html/nsHTMLContentSink.cpp
index 920ded728..1fe5d2a86 100644
--- a/dom/html/nsHTMLContentSink.cpp
+++ b/dom/html/nsHTMLContentSink.cpp
@@ -287,9 +287,10 @@ NS_NewHTMLElement(Element** aResult, already_AddRefed<mozilla::dom::NodeInfo>&&
   CustomElementDefinition* definition = aDefinition;
   if (CustomElementRegistry::IsCustomElementEnabled() && isCustomElement &&
       !definition) {
+    MOZ_ASSERT(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName()));
     definition =
       nsContentUtils::LookupCustomElementDefinition(nodeInfo->GetDocument(),
-                                                    nodeInfo->LocalName(),
+                                                    nodeInfo->NameAtom(),
                                                     nodeInfo->NamespaceID(),
                                                     typeAtom);
   }
-- 
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