Ensure object literal element boilerplates aren't modified.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 4389bfe78ab391c44a24a8ab36874e57968046cf..cde901cad550be96568157e64048b6514457bdc9 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -5552,19 +5552,13 @@ void HOptimizedGraphBuilder::VisitObjectLiteral(ObjectLiteral* expr) {
     Handle<FixedArray> closure_literals(closure->literals(), isolate());
     Handle<FixedArray> constant_properties = expr->constant_properties();
     int literal_index = expr->literal_index();
-    int flags = expr->fast_elements()
-        ? ObjectLiteral::kFastElements : ObjectLiteral::kNoFlags;
-    flags |= expr->has_function()
-        ? ObjectLiteral::kHasFunction : ObjectLiteral::kNoFlags;
+    int flags = expr->ComputeFlags(true);
 
     Add<HPushArguments>(Add<HConstant>(closure_literals),
                         Add<HConstant>(literal_index),
                         Add<HConstant>(constant_properties),
                         Add<HConstant>(flags));
 
-    // TODO(mvstanton): Add a flag to turn off creation of any
-    // AllocationMementos for this call: we are in crankshaft and should have
-    // learned enough about transition behavior to stop emitting mementos.
     Runtime::FunctionId function_id = Runtime::kCreateObjectLiteral;
     literal = Add<HCallRuntime>(isolate()->factory()->empty_string(),
                                 Runtime::FunctionForId(function_id),
@@ -5723,10 +5717,7 @@ void HOptimizedGraphBuilder::VisitArrayLiteral(ArrayLiteral* expr) {
     // pass an empty fixed array to the runtime function instead.
     Handle<FixedArray> constants = isolate()->factory()->empty_fixed_array();
     int literal_index = expr->literal_index();
-    int flags = expr->depth() == 1
-        ? ArrayLiteral::kShallowElements
-        : ArrayLiteral::kNoFlags;
-    flags |= ArrayLiteral::kDisableMementos;
+    int flags = expr->ComputeFlags(true);
 
     Add<HPushArguments>(Add<HConstant>(literals),
                         Add<HConstant>(literal_index),