QtGui: compile-optimize inline swap functions

Instead of using the overly-generic qSwap() monster, use

- qt_ptr_swap() for swapping raw pointers
- member-swap for swapping smart pointers
- std::swap() for swapping scalars

In QtCore, this has proven to give a nice reduction in compile time
for Qt users, cf. b1b0c2970e480ef460a61f37fa430dc443390358.

Pick-to: 6.3 6.2
Task-number: QTBUG-97601
Change-Id: I987ff95e8751a22a4f283655d8225dd16de21178
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gui/painting/qpagesize.h b/src/gui/painting/qpagesize.h
index f4e7af0f6c..569008f166 100644
--- a/src/gui/painting/qpagesize.h
+++ b/src/gui/painting/qpagesize.h
@@ -237,7 +237,7 @@ public:
     ~QPageSize();
 
 
-    void swap(QPageSize &other) noexcept { qSwap(d, other.d); }
+    void swap(QPageSize &other) noexcept { d.swap(other.d); }
 
     friend Q_GUI_EXPORT bool operator==(const QPageSize &lhs, const QPageSize &rhs);
     bool isEquivalentTo(const QPageSize &other) const;