[TypeFeedbackVector] Combine the literals array and the feedback vector.

src/heap/heap.h

 // 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.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 40 matching lines @@
   V(Map, scope_info_map, ScopeInfoMap)                                         \
   V(Map, shared_function_info_map, SharedFunctionInfoMap)                      \
   V(Map, code_map, CodeMap)                                                    \
   V(Map, function_context_map, FunctionContextMap)                             \
   V(Map, cell_map, CellMap)                                                    \
   V(Map, weak_cell_map, WeakCellMap)                                           \
   V(Map, global_property_cell_map, GlobalPropertyCellMap)                      \
   V(Map, foreign_map, ForeignMap)                                              \
   V(Map, heap_number_map, HeapNumberMap)                                       \
   V(Map, transition_array_map, TransitionArrayMap)                             \
-  V(FixedArray, empty_literals_array, EmptyLiteralsArray)                      \
+  V(ScopeInfo, empty_scope_info, EmptyScopeInfo)                               \
   V(FixedArray, empty_type_feedback_vector, EmptyTypeFeedbackVector)           \
   V(FixedArray, empty_fixed_array, EmptyFixedArray)                            \
   V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray)             \
   /* Entries beyond the first 32                                            */ \
   /* The roots above this line should be boring from a GC point of view.    */ \
   /* This means they are never in new space and never on a page that is     */ \
   /* being compacted.                                                       */ \
-  /* Empty scope info */                                                       \
-  V(ScopeInfo, empty_scope_info, EmptyScopeInfo)                               \
   /* Oddballs */                                                               \
   V(Oddball, no_interceptor_result_sentinel, NoInterceptorResultSentinel)      \
   V(Oddball, arguments_marker, ArgumentsMarker)                                \
   V(Oddball, exception, Exception)                                             \
   V(Oddball, termination_exception, TerminationException)                      \
   V(Oddball, optimized_out, OptimizedOut)                                      \
   V(Oddball, stale_register, StaleRegister)                                    \
   /* Context maps */                                                           \
   V(Map, native_context_map, NativeContextMap)                                 \
   V(Map, module_context_map, ModuleContextMap)                                 \
@@ skipping 2614 matching lines @@
   friend class LargeObjectSpace;
   friend class NewSpace;
   friend class PagedSpace;
   DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_