Age inline caches after context disposal.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4100 matching lines @@
   return reinterpret_cast<JSMessageObject*>(obj);
 }
 
 
 INT_ACCESSORS(Code, instruction_size, kInstructionSizeOffset)
 ACCESSORS(Code, relocation_info, ByteArray, kRelocationInfoOffset)
 ACCESSORS(Code, handler_table, FixedArray, kHandlerTableOffset)
 ACCESSORS(Code, deoptimization_data, FixedArray, kDeoptimizationDataOffset)
 ACCESSORS(Code, type_feedback_info, Object, kTypeFeedbackInfoOffset)
 ACCESSORS(Code, gc_metadata, Object, kGCMetadataOffset)
-
+INT_ACCESSORS(Code, ic_age, kICAgeOffset)
 
 byte* Code::instruction_start()  {
   return FIELD_ADDR(this, kHeaderSize);
 }
 
 
 byte* Code::instruction_end()  {
   return instruction_start() + instruction_size();
 }
 
@@ skipping 562 matching lines @@
 template <int entrysize>
 MaybeObject* ObjectHashTableShape<entrysize>::AsObject(Object* key) {
   return key;
 }
 
 
 void Map::ClearCodeCache(Heap* heap) {
   // No write barrier is needed since empty_fixed_array is not in new space.
   // Please note this function is used during marking:
   //  - MarkCompactCollector::MarkUnmarkedObject
+  //  - IncrementalMarking::Step
   ASSERT(!heap->InNewSpace(heap->raw_unchecked_empty_fixed_array()));
   WRITE_FIELD(this, kCodeCacheOffset, heap->raw_unchecked_empty_fixed_array());
 }
 
 
 void JSArray::EnsureSize(int required_size) {
   ASSERT(HasFastTypeElements());
   FixedArray* elts = FixedArray::cast(elements());
   const int kArraySizeThatFitsComfortablyInNewSpace = 128;
   if (elts->length() < required_size) {
@@ skipping 201 matching lines @@
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_