Add a CHECK to make sure we don't accidentally serialize type feedback

src/serialize.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_SERIALIZE_H_
 #define V8_SERIALIZE_H_
 
 #include "src/compiler.h"
 #include "src/hashmap.h"
 #include "src/heap-profiler.h"
@@ skipping 575 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(Deserializer);
 };
 
 
 class CodeAddressMap;
 
 // There can be only one serializer per V8 process.
 class Serializer : public SerializerDeserializer {
  public:
-  Serializer(Isolate* isolate, SnapshotByteSink* sink);
+  Serializer(Isolate* isolate, SnapshotByteSink* sink,
+             bool allow_type_feedback);
   ~Serializer();
   void VisitPointers(Object** start, Object** end) OVERRIDE;
 
   void EncodeReservations(List<SerializedData::Reservation>* out) const;
 
   Isolate* isolate() const { return isolate_; }
 
   BackReferenceMap* back_reference_map() { return &back_reference_map_; }
   RootIndexMap* root_index_map() { return &root_index_map_; }
 
@@ skipping 111 matching lines @@
   // when deserializing. We have to make sure that each chunk fits into a
   // page. So we track the chunk size in pending_chunk_ of a space, but
   // when it exceeds a page, we complete the current chunk and start a new one.
   uint32_t pending_chunk_[kNumberOfPreallocatedSpaces];
   List<uint32_t> completed_chunks_[kNumberOfPreallocatedSpaces];
   uint32_t max_chunk_size_[kNumberOfPreallocatedSpaces];
 
   // We map serialized large objects to indexes for back-referencing.
   uint32_t large_objects_total_size_;
   uint32_t seen_large_objects_index_;
+  bool allow_type_feedback_;
 
   DISALLOW_COPY_AND_ASSIGN(Serializer);
 };
 
 
 class PartialSerializer : public Serializer {
  public:
-  PartialSerializer(Isolate* isolate,
-                    Serializer* startup_snapshot_serializer,
+  PartialSerializer(Isolate* isolate, Serializer* startup_snapshot_serializer,
                     SnapshotByteSink* sink)
-    : Serializer(isolate, sink),
-      startup_serializer_(startup_snapshot_serializer) {
+      : Serializer(isolate, sink, true),
+        startup_serializer_(startup_snapshot_serializer) {
     InitializeCodeAddressMap();
   }
 
   // Serialize the objects reachable from a single object pointer.
   void Serialize(Object** o);
   virtual void SerializeObject(HeapObject* o, HowToCode how_to_code,
                                WhereToPoint where_to_point, int skip) OVERRIDE;
 
  private:
   int PartialSnapshotCacheIndex(HeapObject* o);
@@ skipping 12 matching lines @@
 
 
   Serializer* startup_serializer_;
   DISALLOW_COPY_AND_ASSIGN(PartialSerializer);
 };
 
 
 class StartupSerializer : public Serializer {
  public:
   StartupSerializer(Isolate* isolate, SnapshotByteSink* sink)
-      : Serializer(isolate, sink), root_index_wave_front_(0) {
+      : Serializer(isolate, sink, true), root_index_wave_front_(0) {
     // Clear the cache of objects used by the partial snapshot.  After the
     // strong roots have been serialized we can create a partial snapshot
     // which will repopulate the cache with objects needed by that partial
     // snapshot.
     isolate->set_serialize_partial_snapshot_cache_length(0);
     InitializeCodeAddressMap();
   }
 
   // The StartupSerializer has to serialize the root array, which is slightly
   // different.
@@ skipping 37 matching lines @@
     DCHECK(!AllowHeapAllocation::IsAllowed());
     return source_;
   }
 
   const List<uint32_t>* stub_keys() const { return &stub_keys_; }
   int num_internalized_strings() const { return num_internalized_strings_; }
 
  private:
   CodeSerializer(Isolate* isolate, SnapshotByteSink* sink, String* source,
                  Code* main_code)
-      : Serializer(isolate, sink),
+      : Serializer(isolate, sink, false),
         source_(source),
         main_code_(main_code),
         num_internalized_strings_(0) {
     back_reference_map_.AddSourceString(source);
   }
 
   virtual void SerializeObject(HeapObject* o, HowToCode how_to_code,
                                WhereToPoint where_to_point, int skip) OVERRIDE;
 
   void SerializeBuiltin(int builtin_index, HowToCode how_to_code,
@@ skipping 92 matching lines @@
   static const int kCheckSumOffset = 0;
   static const int kNumInternalizedStringsOffset = 1;
   static const int kReservationsOffset = 2;
   static const int kNumCodeStubKeysOffset = 3;
   static const int kPayloadLengthOffset = 4;
   static const int kHeaderSize = (kPayloadLengthOffset + 1) * kIntSize;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_