Reland of "Store SharedFunctionInfos of a Script in a FixedArray indexed by their ID"

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 5782 matching lines @@
 void Heap::CompactWeakFixedArrays() {
   // Find known WeakFixedArrays and compact them.
   HeapIterator iterator(this);
   for (HeapObject* o = iterator.next(); o != NULL; o = iterator.next()) {
     if (o->IsPrototypeInfo()) {
       Object* prototype_users = PrototypeInfo::cast(o)->prototype_users();
       if (prototype_users->IsWeakFixedArray()) {
         WeakFixedArray* array = WeakFixedArray::cast(prototype_users);
         array->Compact<JSObject::PrototypeRegistryCompactionCallback>();
       }
-    } else if (o->IsScript()) {
-      CompactWeakFixedArray(Script::cast(o)->shared_function_infos());
     }
   }
   CompactWeakFixedArray(noscript_shared_function_infos());
   CompactWeakFixedArray(script_list());
   CompactWeakFixedArray(weak_stack_trace_list());
 }
 
 void Heap::AddRetainedMap(Handle<Map> map) {
   Handle<WeakCell> cell = Map::WeakCellForMap(map);
   Handle<ArrayList> array(retained_maps(), isolate());
@@ skipping 677 matching lines @@
 }
 
 
 // static
 int Heap::GetStaticVisitorIdForMap(Map* map) {
   return StaticVisitorBase::GetVisitorId(map);
 }
 
 }  // namespace internal
 }  // namespace v8