[TypeFeedbackVector] Combine the literals array and the feedback vector.

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 359 matching lines @@
 bool Object::IsLayoutDescriptor() const {
   return IsSmi() || IsFixedTypedArrayBase();
 }
 
 bool HeapObject::IsTypeFeedbackVector() const {
   return map() == GetHeap()->type_feedback_vector_map();
 }
 
 bool HeapObject::IsTypeFeedbackMetadata() const { return IsFixedArray(); }
 
-bool HeapObject::IsLiteralsArray() const { return IsFixedArray(); }
-
 bool HeapObject::IsDeoptimizationInputData() const {
   // Must be a fixed array.
   if (!IsFixedArray()) return false;
 
   // There's no sure way to detect the difference between a fixed array and
   // a deoptimization data array.  Since this is used for asserts we can
   // check that the length is zero or else the fixed size plus a multiple of
   // the entry size.
   int length = FixedArray::cast(this)->length();
   if (length == 0) return true;
@@ skipping 3062 matching lines @@
 
 Smi* DeoptimizationOutputData::PcAndState(int index) {
   return Smi::cast(get(1 + index * 2));
 }
 
 
 void DeoptimizationOutputData::SetPcAndState(int index, Smi* offset) {
   set(1 + index * 2, offset);
 }
 
-
-Object* LiteralsArray::get(int index) const { return FixedArray::get(index); }
-
-
-void LiteralsArray::set(int index, Object* value) {
-  FixedArray::set(index, value);
-}
-
-
-void LiteralsArray::set(int index, Smi* value) {
-  FixedArray::set(index, value);
-}
-
-
-void LiteralsArray::set(int index, Object* value, WriteBarrierMode mode) {
-  FixedArray::set(index, value, mode);
-}
-
-
-LiteralsArray* LiteralsArray::cast(Object* object) {
-  SLOW_DCHECK(object->IsLiteralsArray());
-  return reinterpret_cast<LiteralsArray*>(object);
-}
-
-
-TypeFeedbackVector* LiteralsArray::feedback_vector() const {
-  if (length() == 0) {
-    return TypeFeedbackVector::cast(
-        const_cast<FixedArray*>(FixedArray::cast(this)));
-  }
-  return TypeFeedbackVector::cast(get(kVectorIndex));
-}
-
-
-void LiteralsArray::set_feedback_vector(TypeFeedbackVector* vector) {
-  if (length() <= kVectorIndex) {
-    DCHECK(vector->length() == 0);
-    return;
-  }
-  set(kVectorIndex, vector);
-}
-
-
-Object* LiteralsArray::literal(int literal_index) const {
-  return get(kFirstLiteralIndex + literal_index);
-}
-
-
-void LiteralsArray::set_literal(int literal_index, Object* literal) {
-  set(kFirstLiteralIndex + literal_index, literal);
-}
-
-void LiteralsArray::set_literal_undefined(int literal_index) {
-  set_undefined(kFirstLiteralIndex + literal_index);
-}
-
-int LiteralsArray::literals_count() const {
-  return length() - kFirstLiteralIndex;
-}
-
 int HandlerTable::GetRangeStart(int index) const {
   return Smi::cast(get(index * kRangeEntrySize + kRangeStartIndex))->value();
 }
 
 int HandlerTable::GetRangeEnd(int index) const {
   return Smi::cast(get(index * kRangeEntrySize + kRangeEndIndex))->value();
 }
 
 int HandlerTable::GetRangeHandler(int index) const {
   return HandlerOffsetField::decode(
@@ skipping 2175 matching lines @@
                         map->unused_property_fields());
 }
 
 
 ACCESSORS(JSBoundFunction, bound_target_function, JSReceiver,
           kBoundTargetFunctionOffset)
 ACCESSORS(JSBoundFunction, bound_this, Object, kBoundThisOffset)
 ACCESSORS(JSBoundFunction, bound_arguments, FixedArray, kBoundArgumentsOffset)
 
 ACCESSORS(JSFunction, shared, SharedFunctionInfo, kSharedFunctionInfoOffset)
-ACCESSORS(JSFunction, literals, LiteralsArray, kLiteralsOffset)
+ACCESSORS(JSFunction, feedback_vector, TypeFeedbackVector,
+          kFeedbackVectorOffset)
 ACCESSORS(JSFunction, next_function_link, Object, kNextFunctionLinkOffset)
 
 ACCESSORS(JSGlobalObject, native_context, Context, kNativeContextOffset)
 ACCESSORS(JSGlobalObject, global_proxy, JSObject, kGlobalProxyOffset)
 
 ACCESSORS(JSGlobalProxy, native_context, Object, kNativeContextOffset)
 ACCESSORS(JSGlobalProxy, hash, Object, kHashOffset)
 
 ACCESSORS(AccessorInfo, name, Object, kNameOffset)
 SMI_ACCESSORS(AccessorInfo, flag, kFlagOffset)
@@ skipping 987 matching lines @@
 
 
 bool JSFunction::is_compiled() {
   Builtins* builtins = GetIsolate()->builtins();
   return code() != builtins->builtin(Builtins::kCompileLazy) &&
          code() != builtins->builtin(Builtins::kCompileBaseline) &&
          code() != builtins->builtin(Builtins::kCompileOptimized) &&
          code() != builtins->builtin(Builtins::kCompileOptimizedConcurrent);
 }
 
-TypeFeedbackVector* JSFunction::feedback_vector() {
-  LiteralsArray* array = literals();
-  return array->feedback_vector();
-}
-
 ACCESSORS(JSProxy, target, JSReceiver, kTargetOffset)
 ACCESSORS(JSProxy, handler, Object, kHandlerOffset)
 ACCESSORS(JSProxy, hash, Object, kHashOffset)
 
 bool JSProxy::IsRevoked() const { return !handler()->IsJSReceiver(); }
 
 ACCESSORS(JSCollection, table, Object, kTableOffset)
 
 
 #define ORDERED_HASH_TABLE_ITERATOR_ACCESSORS(name, type, offset)    \
@@ skipping 1702 matching lines @@
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_INL_H_