Add support for accelerated property access to QML types and namespace support

* Resolve lookups in namespaces at compile time and instruct the SSA optimizer
  to eliminate reads from the namespace (QQmlTypeWrapper) if possible. For example
  access to attached properties of types (i.e. MyNameSpace.ListView.isCurrentItem)
  requires neither reading the namespace nor the type.
* Add support for accelerated lookup of attached properties

Change-Id: Ib0b66404ed7e70e1d4a46a1ac8218743a4cc8608
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/qml/compiler/qv4instr_moth_p.h b/src/qml/compiler/qv4instr_moth_p.h
index 180391ff33..5b5667abb4 100644
--- a/src/qml/compiler/qv4instr_moth_p.h
+++ b/src/qml/compiler/qv4instr_moth_p.h
@@ -67,6 +67,7 @@ QT_BEGIN_NAMESPACE
     F(SetLookup, setLookup) \
     F(StoreQObjectProperty, storeQObjectProperty) \
     F(LoadQObjectProperty, loadQObjectProperty) \
+    F(LoadAttachedQObjectProperty, loadAttachedQObjectProperty) \
     F(Push, push) \
     F(CallValue, callValue) \
     F(CallProperty, callProperty) \
@@ -288,8 +289,15 @@ union Instr
         int propertyIndex;
         Param base;
         Param result;
+        int attachedPropertiesId;
         bool captureRequired;
     };
+    struct instr_loadAttachedQObjectProperty {
+        MOTH_INSTR_HEADER
+        int propertyIndex;
+        Param result;
+        int attachedPropertiesId;
+    };
     struct instr_storeProperty {
         MOTH_INSTR_HEADER
         int name;
@@ -692,6 +700,7 @@ union Instr
     instr_loadProperty loadProperty;
     instr_getLookup getLookup;
     instr_loadQObjectProperty loadQObjectProperty;
+    instr_loadAttachedQObjectProperty loadAttachedQObjectProperty;
     instr_storeProperty storeProperty;
     instr_setLookup setLookup;
     instr_storeQObjectProperty storeQObjectProperty;