From 337a7e96b62a2c05e9470f93f7f46dce7b75691f Mon Sep 17 00:00:00 2001
From: Anton Kudryavtsev <a.kudryavtsev@netris.ru>
Date: Fri, 8 Jul 2016 13:21:20 +0300
Subject: QStandardItem: use reserve() to optimize memory allocation

Change-Id: I09df41f6beaaeecc818f11a01206e9e4583fd93f
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
---
 src/gui/itemmodels/qstandarditemmodel.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/gui/itemmodels/qstandarditemmodel.cpp')

diff --git a/src/gui/itemmodels/qstandarditemmodel.cpp b/src/gui/itemmodels/qstandarditemmodel.cpp
index 3861eb8b40..7b8d8ae2b7 100644
--- a/src/gui/itemmodels/qstandarditemmodel.cpp
+++ b/src/gui/itemmodels/qstandarditemmodel.cpp
@@ -1844,7 +1844,9 @@ QList<QStandardItem*> QStandardItem::takeColumn(int column)
         d->model->d_func()->columnsAboutToBeRemoved(this, column, column);
     QList<QStandardItem*> items;
 
-    for (int row = d->rowCount() - 1; row >= 0; --row) {
+    const int rowCount = d->rowCount();
+    items.reserve(rowCount);
+    for (int row = rowCount - 1; row >= 0; --row) {
         int index = d->childIndex(row, column);
         QStandardItem *ch = d->children.at(index);
         if (ch)
-- 
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