Support array literals with FAST_DOUBLE_ELEMENTS ElementsKind.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 987d2810aa75d89681fee1bceef10cfaa87b7214..44f413c4cf68ce90734cfb08c16ee1d1a96ccde5 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -59,13 +59,13 @@ Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size,
 }
 
 
-Handle<FixedArray> Factory::NewFixedDoubleArray(int size,
-                                                PretenureFlag pretenure) {
+Handle<FixedDoubleArray> Factory::NewFixedDoubleArray(int size,
+                                                      PretenureFlag pretenure) {
   ASSERT(0 <= size);
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateUninitializedFixedDoubleArray(size, pretenure),
-      FixedArray);
+      FixedDoubleArray);
 }
 
 
@@ -471,6 +471,12 @@ Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) {
 }
 
 
+Handle<FixedDoubleArray> Factory::CopyFixedDoubleArray(
+    Handle<FixedDoubleArray> array) {
+  CALL_HEAP_FUNCTION(isolate(), array->Copy(), FixedDoubleArray);
+}
+
+
 Handle<JSFunction> Factory::BaseNewFunctionFromSharedFunctionInfo(
     Handle<SharedFunctionInfo> function_info,
     Handle<Map> function_map,