Speed up creation of Array literals

Gives around 10% speedup on the v8 splay benchmark.

Change-Id: I47f64e7b73bde59ac3bdd2c94fc199ecfbbf290e
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>

1 files changed, 1 insertions, 9 deletions

diff --git a/src/qml/jsruntime/qv4runtime.cpp b/src/qml/jsruntime/qv4runtime.cpp
index d122f06d05..0d7a1851b8 100644
--- a/src/qml/jsruntime/qv4runtime.cpp
+++ b/src/qml/jsruntime/qv4runtime.cpp
@@ -1209,15 +1209,7 @@ void Runtime::declareVar(ExecutionEngine *engine, bool deletable, int nameIndex)
 
 ReturnedValue Runtime::arrayLiteral(ExecutionEngine *engine, Value *values, uint length)
 {
-    Scope scope(engine);
-    ScopedArrayObject a(scope, engine->newArrayObject());
-
-    if (length) {
-        a->arrayReserve(length);
-        a->arrayPut(0, values, length);
-        a->setArrayLengthUnchecked(length);
-    }
-    return a.asReturnedValue();
+    return engine->newArrayObject(values, length)->asReturnedValue();
 }
 
 ReturnedValue Runtime::objectLiteral(ExecutionEngine *engine, const QV4::Value *args, int classId, int arrayValueCount, int arrayGetterSetterCountAndFlags)