Embedded constant pools.

src/objects-inl.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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 124 matching lines @@
 #define BOOL_ACCESSORS(holder, field, name, offset)        \
   bool holder::name() const {                              \
     return BooleanBit::get(field(), offset);               \
   }                                                        \
   void holder::set_##name(bool value) {                    \
     set_##field(BooleanBit::set(field(), offset, value));  \
   }
 
 
 bool Object::IsFixedArrayBase() const {
-  return IsFixedArray() || IsFixedDoubleArray() || IsConstantPoolArray() ||
-         IsFixedTypedArrayBase() || IsExternalArray();
+  return IsFixedArray() || IsFixedDoubleArray() || IsFixedTypedArrayBase() ||
+         IsExternalArray();
 }
 
 
 // External objects are not extensible, so the map check is enough.
 bool Object::IsExternal() const {
   return Object::IsHeapObject() &&
       HeapObject::cast(this)->map() ==
       HeapObject::cast(this)->GetHeap()->external_map();
 }
 
@@ skipping 536 matching lines @@
 TYPE_CHECKER(JSMap, JS_MAP_TYPE)
 TYPE_CHECKER(JSSetIterator, JS_SET_ITERATOR_TYPE)
 TYPE_CHECKER(JSMapIterator, JS_MAP_ITERATOR_TYPE)
 TYPE_CHECKER(JSWeakMap, JS_WEAK_MAP_TYPE)
 TYPE_CHECKER(JSWeakSet, JS_WEAK_SET_TYPE)
 TYPE_CHECKER(JSContextExtensionObject, JS_CONTEXT_EXTENSION_OBJECT_TYPE)
 TYPE_CHECKER(Map, MAP_TYPE)
 TYPE_CHECKER(FixedArray, FIXED_ARRAY_TYPE)
 TYPE_CHECKER(FixedDoubleArray, FIXED_DOUBLE_ARRAY_TYPE)
 TYPE_CHECKER(WeakFixedArray, FIXED_ARRAY_TYPE)
-TYPE_CHECKER(ConstantPoolArray, CONSTANT_POOL_ARRAY_TYPE)
 
 
 bool Object::IsJSWeakCollection() const {
   return IsJSWeakMap() || IsJSWeakSet();
 }
 
 
 bool Object::IsDescriptorArray() const {
   return IsFixedArray();
 }
@@ skipping 822 matching lines @@
     if (type == SYMBOL_TYPE) {
       return false;
     }
     DCHECK(type < FIRST_NONSTRING_TYPE);
     // There are four string representations: sequential strings, external
     // strings, cons strings, and sliced strings.
     // Only the former two contain raw values and no heap pointers (besides the
     // map-word).
     return ((type & kIsIndirectStringMask) != kIsIndirectStringTag);
   }
-  // The ConstantPoolArray contains heap pointers, but also raw values.
-  if (type == CONSTANT_POOL_ARRAY_TYPE) return true;
   return (type <= LAST_DATA_TYPE);
 }
 
 
 void HeapObject::IteratePointers(ObjectVisitor* v, int start, int end) {
   v->VisitPointers(reinterpret_cast<Object**>(FIELD_ADDR(this, start)),
                    reinterpret_cast<Object**>(FIELD_ADDR(this, end)));
 }
 
 
@@ skipping 856 matching lines @@
 }
 
 
 void ArrayList::Clear(int index, Object* undefined) {
   DCHECK(undefined->IsUndefined());
   FixedArray::cast(this)
       ->set(kFirstIndex + index, undefined, SKIP_WRITE_BARRIER);
 }
 
 
-void ConstantPoolArray::NumberOfEntries::increment(Type type) {
-  DCHECK(type < NUMBER_OF_TYPES);
-  element_counts_[type]++;
-}
-
-
-int ConstantPoolArray::NumberOfEntries::equals(
-    const ConstantPoolArray::NumberOfEntries& other) const {
-  for (int i = 0; i < NUMBER_OF_TYPES; i++) {
-    if (element_counts_[i] != other.element_counts_[i]) return false;
-  }
-  return true;
-}
-
-
-bool ConstantPoolArray::NumberOfEntries::is_empty() const {
-  return total_count() == 0;
-}
-
-
-int ConstantPoolArray::NumberOfEntries::count_of(Type type) const {
-  DCHECK(type < NUMBER_OF_TYPES);
-  return element_counts_[type];
-}
-
-
-int ConstantPoolArray::NumberOfEntries::base_of(Type type) const {
-  int base = 0;
-  DCHECK(type < NUMBER_OF_TYPES);
-  for (int i = 0; i < type; i++) {
-    base += element_counts_[i];
-  }
-  return base;
-}
-
-
-int ConstantPoolArray::NumberOfEntries::total_count() const {
-  int count = 0;
-  for (int i = 0; i < NUMBER_OF_TYPES; i++) {
-    count += element_counts_[i];
-  }
-  return count;
-}
-
-
-int ConstantPoolArray::NumberOfEntries::are_in_range(int min, int max) const {
-  for (int i = FIRST_TYPE; i < NUMBER_OF_TYPES; i++) {
-    if (element_counts_[i] < min || element_counts_[i] > max) {
-      return false;
-    }
-  }
-  return true;
-}
-
-
-int ConstantPoolArray::Iterator::next_index() {
-  DCHECK(!is_finished());
-  int ret = next_index_++;
-  update_section();
-  return ret;
-}
-
-
-bool ConstantPoolArray::Iterator::is_finished() {
-  return next_index_ > array_->last_index(type_, final_section_);
-}
-
-
-void ConstantPoolArray::Iterator::update_section() {
-  if (next_index_ > array_->last_index(type_, current_section_) &&
-      current_section_ != final_section_) {
-    DCHECK(final_section_ == EXTENDED_SECTION);
-    current_section_ = EXTENDED_SECTION;
-    next_index_ = array_->first_index(type_, EXTENDED_SECTION);
-  }
-}
-
-
-bool ConstantPoolArray::is_extended_layout() {
-  uint32_t small_layout_1 = READ_UINT32_FIELD(this, kSmallLayout1Offset);
-  return IsExtendedField::decode(small_layout_1);
-}
-
-
-ConstantPoolArray::LayoutSection ConstantPoolArray::final_section() {
-  return is_extended_layout() ? EXTENDED_SECTION : SMALL_SECTION;
-}
-
-
-int ConstantPoolArray::first_extended_section_index() {
-  DCHECK(is_extended_layout());
-  uint32_t small_layout_2 = READ_UINT32_FIELD(this, kSmallLayout2Offset);
-  return TotalCountField::decode(small_layout_2);
-}
-
-
-int ConstantPoolArray::get_extended_section_header_offset() {
-  return RoundUp(SizeFor(NumberOfEntries(this, SMALL_SECTION)), kInt64Size);
-}
-
-
-ConstantPoolArray::WeakObjectState ConstantPoolArray::get_weak_object_state() {
-  uint32_t small_layout_2 = READ_UINT32_FIELD(this, kSmallLayout2Offset);
-  return WeakObjectStateField::decode(small_layout_2);
-}
-
-
-void ConstantPoolArray::set_weak_object_state(
-      ConstantPoolArray::WeakObjectState state) {
-  uint32_t small_layout_2 = READ_UINT32_FIELD(this, kSmallLayout2Offset);
-  small_layout_2 = WeakObjectStateField::update(small_layout_2, state);
-  WRITE_INT32_FIELD(this, kSmallLayout2Offset, small_layout_2);
-}
-
-
-int ConstantPoolArray::first_index(Type type, LayoutSection section) {
-  int index = 0;
-  if (section == EXTENDED_SECTION) {
-    DCHECK(is_extended_layout());
-    index += first_extended_section_index();
-  }
-
-  for (Type type_iter = FIRST_TYPE; type_iter < type;
-       type_iter = next_type(type_iter)) {
-    index += number_of_entries(type_iter, section);
-  }
-
-  return index;
-}
-
-
-int ConstantPoolArray::last_index(Type type, LayoutSection section) {
-  return first_index(type, section) + number_of_entries(type, section) - 1;
-}
-
-
-int ConstantPoolArray::number_of_entries(Type type, LayoutSection section) {
-  if (section == SMALL_SECTION) {
-    uint32_t small_layout_1 = READ_UINT32_FIELD(this, kSmallLayout1Offset);
-    uint32_t small_layout_2 = READ_UINT32_FIELD(this, kSmallLayout2Offset);
-    switch (type) {
-      case INT64:
-        return Int64CountField::decode(small_layout_1);
-      case CODE_PTR:
-        return CodePtrCountField::decode(small_layout_1);
-      case HEAP_PTR:
-        return HeapPtrCountField::decode(small_layout_1);
-      case INT32:
-        return Int32CountField::decode(small_layout_2);
-      default:
-        UNREACHABLE();
-        return 0;
-    }
-  } else {
-    DCHECK(section == EXTENDED_SECTION && is_extended_layout());
-    int offset = get_extended_section_header_offset();
-    switch (type) {
-      case INT64:
-        offset += kExtendedInt64CountOffset;
-        break;
-      case CODE_PTR:
-        offset += kExtendedCodePtrCountOffset;
-        break;
-      case HEAP_PTR:
-        offset += kExtendedHeapPtrCountOffset;
-        break;
-      case INT32:
-        offset += kExtendedInt32CountOffset;
-        break;
-      default:
-        UNREACHABLE();
-    }
-    return READ_INT_FIELD(this, offset);
-  }
-}
-
-
-bool ConstantPoolArray::offset_is_type(int offset, Type type) {
-  return (offset >= OffsetOfElementAt(first_index(type, SMALL_SECTION)) &&
-          offset <= OffsetOfElementAt(last_index(type, SMALL_SECTION))) ||
-         (is_extended_layout() &&
-          offset >= OffsetOfElementAt(first_index(type, EXTENDED_SECTION)) &&
-          offset <= OffsetOfElementAt(last_index(type, EXTENDED_SECTION)));
-}
-
-
-ConstantPoolArray::Type ConstantPoolArray::get_type(int index) {
-  LayoutSection section;
-  if (is_extended_layout() && index >= first_extended_section_index()) {
-    section = EXTENDED_SECTION;
-  } else {
-    section = SMALL_SECTION;
-  }
-
-  Type type = FIRST_TYPE;
-  while (index > last_index(type, section)) {
-    type = next_type(type);
-  }
-  DCHECK(type <= LAST_TYPE);
-  return type;
-}
-
-
-int64_t ConstantPoolArray::get_int64_entry(int index) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == INT64);
-  return READ_INT64_FIELD(this, OffsetOfElementAt(index));
-}
-
-
-double ConstantPoolArray::get_int64_entry_as_double(int index) {
-  STATIC_ASSERT(kDoubleSize == kInt64Size);
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == INT64);
-  return READ_DOUBLE_FIELD(this, OffsetOfElementAt(index));
-}
-
-
-Address ConstantPoolArray::get_code_ptr_entry(int index) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == CODE_PTR);
-  return reinterpret_cast<Address>(READ_FIELD(this, OffsetOfElementAt(index)));
-}
-
-
-Object* ConstantPoolArray::get_heap_ptr_entry(int index) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == HEAP_PTR);
-  return READ_FIELD(this, OffsetOfElementAt(index));
-}
-
-
-int32_t ConstantPoolArray::get_int32_entry(int index) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == INT32);
-  return READ_INT32_FIELD(this, OffsetOfElementAt(index));
-}
-
-
-void ConstantPoolArray::set(int index, int64_t value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == INT64);
-  WRITE_INT64_FIELD(this, OffsetOfElementAt(index), value);
-}
-
-
-void ConstantPoolArray::set(int index, double value) {
-  STATIC_ASSERT(kDoubleSize == kInt64Size);
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == INT64);
-  WRITE_DOUBLE_FIELD(this, OffsetOfElementAt(index), value);
-}
-
-
-void ConstantPoolArray::set(int index, Address value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == CODE_PTR);
-  WRITE_FIELD(this, OffsetOfElementAt(index), reinterpret_cast<Object*>(value));
-}
-
-
-void ConstantPoolArray::set(int index, Object* value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(!GetHeap()->InNewSpace(value));
-  DCHECK(get_type(index) == HEAP_PTR);
-  WRITE_FIELD(this, OffsetOfElementAt(index), value);
-  WRITE_BARRIER(GetHeap(), this, OffsetOfElementAt(index), value);
-}
-
-
-void ConstantPoolArray::set(int index, int32_t value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(get_type(index) == INT32);
-  WRITE_INT32_FIELD(this, OffsetOfElementAt(index), value);
-}
-
-
-void ConstantPoolArray::set_at_offset(int offset, int32_t value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(offset_is_type(offset, INT32));
-  WRITE_INT32_FIELD(this, offset, value);
-}
-
-
-void ConstantPoolArray::set_at_offset(int offset, int64_t value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(offset_is_type(offset, INT64));
-  WRITE_INT64_FIELD(this, offset, value);
-}
-
-
-void ConstantPoolArray::set_at_offset(int offset, double value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(offset_is_type(offset, INT64));
-  WRITE_DOUBLE_FIELD(this, offset, value);
-}
-
-
-void ConstantPoolArray::set_at_offset(int offset, Address value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(offset_is_type(offset, CODE_PTR));
-  WRITE_FIELD(this, offset, reinterpret_cast<Object*>(value));
-  WRITE_BARRIER(GetHeap(), this, offset, reinterpret_cast<Object*>(value));
-}
-
-
-void ConstantPoolArray::set_at_offset(int offset, Object* value) {
-  DCHECK(map() == GetHeap()->constant_pool_array_map());
-  DCHECK(!GetHeap()->InNewSpace(value));
-  DCHECK(offset_is_type(offset, HEAP_PTR));
-  WRITE_FIELD(this, offset, value);
-  WRITE_BARRIER(GetHeap(), this, offset, value);
-}
-
-
-void ConstantPoolArray::Init(const NumberOfEntries& small) {
-  uint32_t small_layout_1 =
-      Int64CountField::encode(small.count_of(INT64)) |
-      CodePtrCountField::encode(small.count_of(CODE_PTR)) |
-      HeapPtrCountField::encode(small.count_of(HEAP_PTR)) |
-      IsExtendedField::encode(false);
-  uint32_t small_layout_2 =
-      Int32CountField::encode(small.count_of(INT32)) |
-      TotalCountField::encode(small.total_count()) |
-      WeakObjectStateField::encode(NO_WEAK_OBJECTS);
-  WRITE_UINT32_FIELD(this, kSmallLayout1Offset, small_layout_1);
-  WRITE_UINT32_FIELD(this, kSmallLayout2Offset, small_layout_2);
-  if (kHeaderSize != kFirstEntryOffset) {
-    DCHECK(kFirstEntryOffset - kHeaderSize == kInt32Size);
-    WRITE_UINT32_FIELD(this, kHeaderSize, 0);  // Zero out header padding.
-  }
-}
-
-
-void ConstantPoolArray::InitExtended(const NumberOfEntries& small,
-                                     const NumberOfEntries& extended) {
-  // Initialize small layout fields first.
-  Init(small);
-
-  // Set is_extended_layout field.
-  uint32_t small_layout_1 = READ_UINT32_FIELD(this, kSmallLayout1Offset);
-  small_layout_1 = IsExtendedField::update(small_layout_1, true);
-  WRITE_INT32_FIELD(this, kSmallLayout1Offset, small_layout_1);
-
-  // Initialize the extended layout fields.
-  int extended_header_offset = get_extended_section_header_offset();
-  WRITE_INT32_FIELD(this, extended_header_offset + kExtendedInt64CountOffset,
-                    extended.count_of(INT64));
-  WRITE_INT32_FIELD(this, extended_header_offset + kExtendedCodePtrCountOffset,
-                    extended.count_of(CODE_PTR));
-  WRITE_INT32_FIELD(this, extended_header_offset + kExtendedHeapPtrCountOffset,
-                    extended.count_of(HEAP_PTR));
-  WRITE_INT32_FIELD(this, extended_header_offset + kExtendedInt32CountOffset,
-                    extended.count_of(INT32));
-}
-
-
-int ConstantPoolArray::size() {
-  NumberOfEntries small(this, SMALL_SECTION);
-  if (!is_extended_layout()) {
-    return SizeFor(small);
-  } else {
-    NumberOfEntries extended(this, EXTENDED_SECTION);
-    return SizeForExtended(small, extended);
-  }
-}
-
-
-int ConstantPoolArray::length() {
-  uint32_t small_layout_2 = READ_UINT32_FIELD(this, kSmallLayout2Offset);
-  int length = TotalCountField::decode(small_layout_2);
-  if (is_extended_layout()) {
-    length += number_of_entries(INT64, EXTENDED_SECTION) +
-              number_of_entries(CODE_PTR, EXTENDED_SECTION) +
-              number_of_entries(HEAP_PTR, EXTENDED_SECTION) +
-              number_of_entries(INT32, EXTENDED_SECTION);
-  }
-  return length;
-}
-
-
 WriteBarrierMode HeapObject::GetWriteBarrierMode(
     const DisallowHeapAllocation& promise) {
   Heap* heap = GetHeap();
   if (heap->incremental_marking()->IsMarking()) return UPDATE_WRITE_BARRIER;
   if (heap->InNewSpace(this)) return SKIP_WRITE_BARRIER;
   return UPDATE_WRITE_BARRIER;
 }
 
 
 bool HeapObject::NeedsToEnsureDoubleAlignment() {
 #ifndef V8_HOST_ARCH_64_BIT
-  return (IsFixedFloat64Array() || IsFixedDoubleArray() ||
-          IsConstantPoolArray()) &&
+  return (IsFixedFloat64Array() || IsFixedDoubleArray()) &&
          FixedArrayBase::cast(this)->length() != 0;
 #else
   return false;
 #endif  // V8_HOST_ARCH_64_BIT
 }
 
 
 void FixedArray::set(int index,
                      Object* value,
                      WriteBarrierMode mode) {
@@ skipping 495 matching lines @@
 
 
 CAST_ACCESSOR(AccessorInfo)
 CAST_ACCESSOR(ArrayList)
 CAST_ACCESSOR(ByteArray)
 CAST_ACCESSOR(Cell)
 CAST_ACCESSOR(Code)
 CAST_ACCESSOR(CodeCacheHashTable)
 CAST_ACCESSOR(CompilationCacheTable)
 CAST_ACCESSOR(ConsString)
-CAST_ACCESSOR(ConstantPoolArray)
 CAST_ACCESSOR(DeoptimizationInputData)
 CAST_ACCESSOR(DeoptimizationOutputData)
 CAST_ACCESSOR(DependentCode)
 CAST_ACCESSOR(DescriptorArray)
 CAST_ACCESSOR(ExternalArray)
 CAST_ACCESSOR(ExternalOneByteString)
 CAST_ACCESSOR(ExternalFloat32Array)
 CAST_ACCESSOR(ExternalFloat64Array)
 CAST_ACCESSOR(ExternalInt16Array)
 CAST_ACCESSOR(ExternalInt32Array)
@@ skipping 1167 matching lines @@
       instance_type == INTERNALIZED_STRING_TYPE) {
     // Strings may get concurrently truncated, hence we have to access its
     // length synchronized.
     return SeqTwoByteString::SizeFor(
         reinterpret_cast<SeqTwoByteString*>(this)->synchronized_length());
   }
   if (instance_type == FIXED_DOUBLE_ARRAY_TYPE) {
     return FixedDoubleArray::SizeFor(
         reinterpret_cast<FixedDoubleArray*>(this)->length());
   }
-  if (instance_type == CONSTANT_POOL_ARRAY_TYPE) {
-    return reinterpret_cast<ConstantPoolArray*>(this)->size();
-  }
   if (instance_type >= FIRST_FIXED_TYPED_ARRAY_TYPE &&
       instance_type <= LAST_FIXED_TYPED_ARRAY_TYPE) {
     return reinterpret_cast<FixedTypedArrayBase*>(
         this)->TypedArraySize(instance_type);
   }
   DCHECK(instance_type == CODE_TYPE);
   return reinterpret_cast<Code*>(this)->CodeSize();
 }
 
 
@@ skipping 584 matching lines @@
 bool Code::is_keyed_stub() {
   return is_keyed_load_stub() || is_keyed_store_stub();
 }
 
 
 bool Code::is_debug_stub() {
   return ic_state() == DEBUG_STUB;
 }
 
 
-ConstantPoolArray* Code::constant_pool() {
-  return ConstantPoolArray::cast(READ_FIELD(this, kConstantPoolOffset));
+Address Code::constant_pool() {
+  Address constant_pool = NULL;
+  if (FLAG_enable_embedded_constant_pool) {
+    int offset = constant_pool_offset();
+    if (offset < instruction_size()) {
+      constant_pool = FIELD_ADDR(this, kHeaderSize + offset);
+    }
+  }
+  return constant_pool;
 }
 
 
-void Code::set_constant_pool(Object* value) {
-  DCHECK(value->IsConstantPoolArray());
-  WRITE_FIELD(this, kConstantPoolOffset, value);
-  WRITE_BARRIER(GetHeap(), this, kConstantPoolOffset, value);
-}
-
-
 Code::Flags Code::ComputeFlags(Kind kind, InlineCacheState ic_state,
                                ExtraICState extra_ic_state, StubType type,
                                CacheHolderFlag holder) {
   // Compute the bit mask.
   unsigned int bits = KindField::encode(kind)
       | ICStateField::encode(ic_state)
       | TypeField::encode(type)
       | ExtraICStateField::encode(extra_ic_state)
       | CacheHolderField::encode(holder);
   return static_cast<Flags>(bits);
@@ skipping 1158 matching lines @@
 ACCESSORS(JSMessageObject, type, String, kTypeOffset)
 ACCESSORS(JSMessageObject, arguments, JSArray, kArgumentsOffset)
 ACCESSORS(JSMessageObject, script, Object, kScriptOffset)
 ACCESSORS(JSMessageObject, stack_frames, Object, kStackFramesOffset)
 SMI_ACCESSORS(JSMessageObject, start_position, kStartPositionOffset)
 SMI_ACCESSORS(JSMessageObject, end_position, kEndPositionOffset)
 
 
 INT_ACCESSORS(Code, instruction_size, kInstructionSizeOffset)
 INT_ACCESSORS(Code, prologue_offset, kPrologueOffset)
+INT_ACCESSORS(Code, constant_pool_offset, kConstantPoolOffset)
 ACCESSORS(Code, relocation_info, ByteArray, kRelocationInfoOffset)
 ACCESSORS(Code, handler_table, FixedArray, kHandlerTableOffset)
 ACCESSORS(Code, deoptimization_data, FixedArray, kDeoptimizationDataOffset)
 ACCESSORS(Code, raw_type_feedback_info, Object, kTypeFeedbackInfoOffset)
 ACCESSORS(Code, next_code_link, Object, kNextCodeLinkOffset)
 
 
 void Code::WipeOutHeader() {
   WRITE_FIELD(this, kRelocationInfoOffset, NULL);
   WRITE_FIELD(this, kHandlerTableOffset, NULL);
   WRITE_FIELD(this, kDeoptimizationDataOffset, NULL);
-  WRITE_FIELD(this, kConstantPoolOffset, NULL);
   // Do not wipe out major/minor keys on a code stub or IC
   if (!READ_FIELD(this, kTypeFeedbackInfoOffset)->IsSmi()) {
     WRITE_FIELD(this, kTypeFeedbackInfoOffset, NULL);
   }
 }
 
 
 Object* Code::type_feedback_info() {
   DCHECK(kind() == FUNCTION);
   return raw_type_feedback_info();
@@ skipping 1259 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_