From 4e0277664071c31e2189e2351e3e9d12c4e7e08c Mon Sep 17 00:00:00 2001 From: Simon Hausmann Date: Tue, 16 Jan 2018 16:24:34 +0100 Subject: Speed up V4 QML context creation After commit cae7975a036352ca4bbcf1381a445362f8e01367 the vtable became part of the internal class, which meant that for allocating the V4::QmlContext and the QV4::QmlContextWrapper we had one additional IC transition upon allocation. We can avoid that by providing a default IC for both types. Task-number: QTBUG-65708 Change-Id: I22815a24a8389b59103309806f6ac4ca382405f0 Reviewed-by: Lars Knoll --- src/qml/jsruntime/qv4engine.cpp | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/qml/jsruntime/qv4engine.cpp') diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp index a584c2731f..0d3f29d089 100644 --- a/src/qml/jsruntime/qv4engine.cpp +++ b/src/qml/jsruntime/qv4engine.cpp @@ -214,6 +214,7 @@ ExecutionEngine::ExecutionEngine(EvalISelFactory *factory) internalClasses[Class_SimpleArrayData] = internalClasses[EngineBase::Class_Empty]->changeVTable(QV4::SimpleArrayData::staticVTable()); internalClasses[Class_SparseArrayData] = internalClasses[EngineBase::Class_Empty]->changeVTable(QV4::SparseArrayData::staticVTable()); internalClasses[Class_ExecutionContext] = internalClasses[EngineBase::Class_Empty]->changeVTable(QV4::ExecutionContext::staticVTable()); + internalClasses[EngineBase::Class_QmlContext] = internalClasses[EngineBase::Class_ExecutionContext]->changeVTable(QV4::QmlContext::staticVTable()); internalClasses[Class_CallContext] = internalClasses[EngineBase::Class_Empty]->changeVTable(QV4::CallContext::staticVTable()); jsStrings[String_Empty] = newIdentifier(QString()); @@ -256,6 +257,7 @@ ExecutionEngine::ExecutionEngine(EvalISelFactory *factory) InternalClass *ic = internalClasses[Class_Empty]->changeVTable(QV4::Object::staticVTable()); jsObjects[ObjectProto] = memoryManager->allocObject(ic); internalClasses[Class_Object] = ic->changePrototype(objectPrototype()->d()); + internalClasses[EngineBase::Class_QmlContextWrapper] = internalClasses[Class_Object]->changeVTable(QV4::QmlContextWrapper::staticVTable()); ic = newInternalClass(ArrayPrototype::staticVTable(), objectPrototype()); Q_ASSERT(ic->prototype); -- cgit v1.2.3