From 8f22f242a2fcaad5adb9ce627dd6e61a1bfe220c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C4=99drzej=20Nowacki?= <jedrzej.nowacki@digia.com>
Date: Wed, 14 May 2014 14:35:21 +0200
Subject: [PATCH] Micro-optimize QUrl::topLevelDomain
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Using QStringRef saves few instructions

Change-Id: I0d67a1f6a1c1385c88a8b21cb98b9c7dbdfb66e5
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
---
 src/corelib/io/qtldurl.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/corelib/io/qtldurl.cpp b/src/corelib/io/qtldurl.cpp
index dd4301e9f17..f8eddedf2fe 100644
--- a/src/corelib/io/qtldurl.cpp
+++ b/src/corelib/io/qtldurl.cpp
@@ -43,7 +43,8 @@
 #include "qurl.h"
 #include "private/qurltlds_p.h"
 #include "private/qtldurl_p.h"
-#include "QtCore/qstringlist.h"
+#include "QtCore/qstring.h"
+#include "QtCore/qvector.h"
 #include "QtCore/qhash.h"
 
 QT_BEGIN_NAMESPACE
@@ -80,7 +81,8 @@ static bool containsTLDEntry(const QString &entry)
 
 Q_CORE_EXPORT QString qTopLevelDomain(const QString &domain)
 {
-    QStringList sections = domain.toLower().split(QLatin1Char('.'), QString::SkipEmptyParts);
+    const QString domainLower = domain.toLower();
+    QVector<QStringRef> sections = domainLower.splitRef(QLatin1Char('.'), QString::SkipEmptyParts);
     if (sections.isEmpty())
         return QString();