Move of the type feedback vector to the closure.

src/heap/heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/heap/heap.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/ast/scopeinfo.h"
 #include "src/base/bits.h"
@@ skipping 2773 matching lines @@
     Object* megamorphic = *TypeFeedbackVector::MegamorphicSentinel(isolate());
     dummy_vector->Set(load_ic_slot, megamorphic, SKIP_WRITE_BARRIER);
     dummy_vector->Set(keyed_load_ic_slot, megamorphic, SKIP_WRITE_BARRIER);
     dummy_vector->Set(store_ic_slot, megamorphic, SKIP_WRITE_BARRIER);
     dummy_vector->Set(keyed_store_ic_slot, megamorphic, SKIP_WRITE_BARRIER);
 
     set_dummy_vector(*dummy_vector);
   }
 
   {
+    Handle<FixedArray> empty_literals_array =
+        factory->NewFixedArray(1, TENURED);
+    empty_literals_array->set(0, *factory->empty_fixed_array(),
+                              SKIP_WRITE_BARRIER);

[Michael Starzinger, 2016/05/10 13:47:20]

nit: I have a hard time reasoning about whether skipping this write barrier is
actually safe. Could we instead just keep the write barrier here? This
initialization is only used in the no-snapshot case anyways.

[mvstanton, 2016/05/24 16:31:49]

Done.

[mvstanton, 2016/05/24 16:31:50]

Done.

+    set_empty_literals_array(*empty_literals_array);
+  }
+
+  {
     Handle<WeakCell> cell = factory->NewWeakCell(factory->undefined_value());
     set_empty_weak_cell(*cell);
     cell->clear();
 
     Handle<FixedArray> cleared_optimized_code_map =
         factory->NewFixedArray(SharedFunctionInfo::kEntriesStart, TENURED);
     cleared_optimized_code_map->set(SharedFunctionInfo::kSharedCodeIndex,
                                     *cell);
     STATIC_ASSERT(SharedFunctionInfo::kEntriesStart == 1 &&
                   SharedFunctionInfo::kSharedCodeIndex == 0);
@@ skipping 3543 matching lines @@
 }
 
 
 // static
 int Heap::GetStaticVisitorIdForMap(Map* map) {
   return StaticVisitorBase::GetVisitorId(map);
 }
 
 }  // namespace internal
 }  // namespace v8