Revert of [turbofan] Discard the shared code entry in the optimized code map.

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/context-slot-cache.h"
 #include "src/base/bits.h"
@@ skipping 2808 matching lines @@
     Handle<FixedArray> empty_sloppy_arguments_elements =
         factory->NewFixedArray(2, TENURED);
     empty_sloppy_arguments_elements->set_map(sloppy_arguments_elements_map());
     set_empty_sloppy_arguments_elements(*empty_sloppy_arguments_elements);
   }
 
   {
     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);
+    set_cleared_optimized_code_map(*cleared_optimized_code_map);
   }
 
   set_detached_contexts(empty_fixed_array());
   set_retained_maps(ArrayList::cast(empty_fixed_array()));
 
   set_weak_object_to_code_table(
       *WeakHashTable::New(isolate(), 16, USE_DEFAULT_MINIMUM_CAPACITY,
                           TENURED));
 
   set_weak_new_space_object_to_code_list(
@@ skipping 3671 matching lines @@
 }
 
 
 // static
 int Heap::GetStaticVisitorIdForMap(Map* map) {
   return StaticVisitorBase::GetVisitorId(map);
 }
 
 }  // namespace internal
 }  // namespace v8