Accelerate access to singletons and imported scripts

Use a dedicated lookup type to provide super fast access to engine wide
singleton objects as well as scripts

Task-number: QTBUG-69898
Change-Id: Ie430f48f6576a9171018ef18742dcf6b2adb4310
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4lookup_p.h b/src/qml/jsruntime/qv4lookup_p.h
index e4d9ad8328..2384a1194e 100644
--- a/src/qml/jsruntime/qv4lookup_p.h
+++ b/src/qml/jsruntime/qv4lookup_p.h
@@ -129,6 +129,15 @@ struct Lookup {
             QQmlPropertyCache *propertyCache;
             QQmlPropertyData *propertyData;
         } qgadgetLookup;
+        struct {
+            quintptr unused1;
+            quintptr unused2;
+            int scriptIndex;
+        } qmlContextScriptLookup;
+        struct {
+            Heap::Object *singleton;
+            quintptr unused;
+        } qmlContextSingletonLookup;
     };
     uint nameIndex;