QML: Specialize bindings based on target property type.

When we can determine the type of a target property during type
compilation, we can skip a whole bunch of code that deals with
converting the result of a binding to the correct (target) type.

This removes 65 instructions on x86 for such typed bindings.

Change-Id: Id2c7c57b9ae6dfbeb921121beae9630604ca1d17
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/tests/auto/qml/qqmllanguage/testtypes.cpp b/tests/auto/qml/qqmllanguage/testtypes.cpp
index 908600784e..3921f89d23 100644
--- a/tests/auto/qml/qqmllanguage/testtypes.cpp
+++ b/tests/auto/qml/qqmllanguage/testtypes.cpp
@@ -129,9 +129,10 @@ void CustomBinding::componentComplete()
 
         QV4::Scope scope(QQmlEnginePrivate::getV4Engine(qmlEngine(this)));
         QV4::ScopedValue function(scope, QV4::FunctionObject::createQmlFunction(context, m_target, compilationUnit->runtimeFunctions[bindingId]));
-        QQmlBinding *qmlBinding = new QQmlBinding(function, m_target, context);
 
         QQmlProperty property(m_target, name, qmlContext(this));
+        QQmlBinding *qmlBinding = QQmlBinding::create(&QQmlPropertyPrivate::get(property)->core,
+                                                      function, m_target, context);
         qmlBinding->setTarget(property);
         QQmlPropertyPrivate::setBinding(property, qmlBinding);
     }