Migrate FastCloneShallowObjectStub to TurboFan

src/ast/ast.cc

Index: src/ast/ast.cc
diff --git a/src/ast/ast.cc b/src/ast/ast.cc
index e8b6269648ed394e27dc2af919c4f9db8e49b6fa..a40497e7eac9157e27c9cf7748b924d801e44803 100644
--- a/src/ast/ast.cc
+++ b/src/ast/ast.cc
@@ -452,10 +452,9 @@ void ObjectLiteral::BuildConstantProperties(Isolate* isolate) {
     Handle<Object> value = GetBoilerplateValue(property->value(), isolate);
 
     // Ensure objects that may, at any point in time, contain fields with double
-    // representation are always treated as nested objects. This is true for
-    // computed fields (value is undefined), and smi and double literals
-    // (value->IsNumber()).
-    // TODO(verwaest): Remove once we can store them inline.
+    // representation are treated as nested objects if they are not unboxed.
+    // This is true for computed fields (value is undefined), and smi and double
+    // literals (value->IsNumber()).
     if (FLAG_track_double_fields &&
         (value->IsNumber() || value->IsUninitialized())) {
       may_store_doubles_ = true;