Use QVector::reserve() all over the place.

Reduces internal memory fragmentation.

The search criteria was:
QVector::append(), QVector::push_back(), QVector::operator<<()
and QVector::operator+=() calls inside for, do and while loops.
Statements inside ifs and out of loops weren't considered.

Change-Id: Ie5aaf3cdfac938994e6e5dfa5f51de501ed79a0c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/gui/painting/qtransform.cpp b/src/gui/painting/qtransform.cpp
index fca2b72249..a23aabe559 100644
--- a/src/gui/painting/qtransform.cpp
+++ b/src/gui/painting/qtransform.cpp
@@ -1381,7 +1381,9 @@ static QPolygonF mapProjective(const QTransform &transform, const QPolygonF &pol
     path = transform.map(path);
 
     QPolygonF result;
-    for (int i = 0; i < path.elementCount(); ++i)
+    const int elementCount = path.elementCount();
+    result.reserve(elementCount);
+    for (int i = 0; i < elementCount; ++i)
         result << path.elementAt(i);
     return result;
 }