Reset trunk to 3.24.35.4

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 41 matching lines @@
 #include "objects-visiting.h"
 
 namespace v8 {
 namespace internal {
 
 PropertyDetails::PropertyDetails(Smi* smi) {
   value_ = smi->value();
 }
 
 
-Smi* PropertyDetails::AsSmi() const {
+Smi* PropertyDetails::AsSmi() {
   // Ensure the upper 2 bits have the same value by sign extending it. This is
   // necessary to be able to use the 31st bit of the property details.
   int value = value_ << 1;
   return Smi::FromInt(value >> 1);
 }
 
 
-PropertyDetails PropertyDetails::AsDeleted() const {
+PropertyDetails PropertyDetails::AsDeleted() {
   Smi* smi = Smi::FromInt(value_ | DeletedField::encode(1));
   return PropertyDetails(smi);
 }
 
 
 #define TYPE_CHECKER(type, instancetype)                                \
   bool Object::Is##type() {                                             \
   return Object::IsHeapObject() &&                                      \
       HeapObject::cast(this)->map()->instance_type() == instancetype;   \
   }
@@ skipping 672 matching lines @@
 
 
 bool Object::IsDependentCode() {
   if (!IsFixedArray()) return false;
   // There's actually no way to see the difference between a fixed array and
   // a dependent codes array.
   return true;
 }
 
 
+bool Object::IsTypeFeedbackCells() {
+  if (!IsFixedArray()) return false;
+  // There's actually no way to see the difference between a fixed array and
+  // a cache cells array.  Since this is used for asserts we can check that
+  // the length is plausible though.
+  if (FixedArray::cast(this)->length() % 2 != 0) return false;
+  return true;
+}
+
+
 bool Object::IsContext() {
   if (!Object::IsHeapObject()) return false;
   Map* map = HeapObject::cast(this)->map();
   Heap* heap = map->GetHeap();
   return (map == heap->function_context_map() ||
       map == heap->catch_context_map() ||
       map == heap->with_context_map() ||
       map == heap->native_context_map() ||
       map == heap->block_context_map() ||
       map == heap->module_context_map() ||
@@ skipping 774 matching lines @@
           static_cast<double>(found_count) / create_count : 0.0;
   PretenureFlag current_mode = GetPretenureMode();
 
   if (minimum_mementos_created) {
     PretenureDecision result = ratio >= kPretenureRatio
         ? kTenure
         : kDontTenure;
     set_pretenure_decision(result);
     if (current_mode != GetPretenureMode()) {
       decision_changed = true;
-      set_deopt_dependent_code(true);
+      dependent_code()->MarkCodeForDeoptimization(
+          GetIsolate(),
+          DependentCode::kAllocationSiteTenuringChangedGroup);
     }
   }
 
   if (FLAG_trace_pretenuring_statistics) {
     PrintF(
         "AllocationSite(%p): (created, found, ratio) (%d, %d, %f) %s => %s\n",
          static_cast<void*>(this), create_count, found_count, ratio,
          current_mode == TENURED ? "tenured" : "not tenured",
          GetPretenureMode() == TENURED ? "tenured" : "not tenured");
   }
@@ skipping 915 matching lines @@
 
   if (number == DescriptorLookupCache::kAbsent) {
     number = Search(name, number_of_own_descriptors);
     cache->Update(map, name, number);
   }
 
   return number;
 }
 
 
-PropertyDetails Map::GetLastDescriptorDetails() {
-  return instance_descriptors()->GetDetails(LastAdded());
-}
-
-
 void Map::LookupDescriptor(JSObject* holder,
                            Name* name,
                            LookupResult* result) {
   DescriptorArray* descriptors = this->instance_descriptors();
   int number = descriptors->SearchWithCache(name, this);
   if (number == DescriptorArray::kNotFound) return result->NotFound();
   result->DescriptorResult(holder, descriptors->GetDetails(number), number);
 }
 
 
 void Map::LookupTransition(JSObject* holder,
                            Name* name,
                            LookupResult* result) {
   if (HasTransitionArray()) {
     TransitionArray* transition_array = transitions();
     int number = transition_array->Search(name);
     if (number != TransitionArray::kNotFound) {
-      return result->TransitionResult(
-          holder, transition_array->GetTarget(number));
+      return result->TransitionResult(holder, number);
     }
   }
   result->NotFound();
 }
 
 
 Object** DescriptorArray::GetKeySlot(int descriptor_number) {
   ASSERT(descriptor_number < number_of_descriptors());
   return RawFieldOfElementAt(ToKeyIndex(descriptor_number));
 }
@@ skipping 251 matching lines @@
 
 
 CAST_ACCESSOR(FixedArray)
 CAST_ACCESSOR(FixedDoubleArray)
 CAST_ACCESSOR(FixedTypedArrayBase)
 CAST_ACCESSOR(ConstantPoolArray)
 CAST_ACCESSOR(DescriptorArray)
 CAST_ACCESSOR(DeoptimizationInputData)
 CAST_ACCESSOR(DeoptimizationOutputData)
 CAST_ACCESSOR(DependentCode)
+CAST_ACCESSOR(TypeFeedbackCells)
 CAST_ACCESSOR(StringTable)
 CAST_ACCESSOR(JSFunctionResultCache)
 CAST_ACCESSOR(NormalizedMapCache)
 CAST_ACCESSOR(ScopeInfo)
 CAST_ACCESSOR(CompilationCacheTable)
 CAST_ACCESSOR(CodeCacheHashTable)
 CAST_ACCESSOR(PolymorphicCodeCacheHashTable)
 CAST_ACCESSOR(MapCache)
 CAST_ACCESSOR(String)
 CAST_ACCESSOR(SeqString)
@@ skipping 1393 matching lines @@
   // objects. This is used in the debugger to determine whether or not
   // a call to code object has been replaced with a debug break call.
   ASSERT(is_inline_cache_stub() ||
          result == UNINITIALIZED ||
          result == DEBUG_STUB);
   return result;
 }
 
 
 ExtraICState Code::extra_ic_state() {
+  ASSERT((is_inline_cache_stub() && !needs_extended_extra_ic_state(kind()))
+         || ic_state() == DEBUG_STUB);
+  return ExtractExtraICStateFromFlags(flags());
+}
+
+
+ExtraICState Code::extended_extra_ic_state() {
   ASSERT(is_inline_cache_stub() || ic_state() == DEBUG_STUB);
-  return ExtractExtraICStateFromFlags(flags());
+  ASSERT(needs_extended_extra_ic_state(kind()));
+  return ExtractExtendedExtraICStateFromFlags(flags());
 }
 
 
 Code::StubType Code::type() {
   return ExtractTypeFromFlags(flags());
 }
 
 
+int Code::arguments_count() {
+  ASSERT(kind() == STUB || is_handler());
+  return ExtractArgumentsCountFromFlags(flags());
+}
+
+
 // For initialization.
 void Code::set_raw_kind_specific_flags1(int value) {
   WRITE_INT_FIELD(this, kKindSpecificFlags1Offset, value);
 }
 
 
 void Code::set_raw_kind_specific_flags2(int value) {
   WRITE_INT_FIELD(this, kKindSpecificFlags2Offset, value);
 }
 
@@ skipping 183 matching lines @@
 void Code::set_back_edges_patched_for_osr(bool value) {
   ASSERT_EQ(FUNCTION, kind());
   int previous = READ_UINT32_FIELD(this, kKindSpecificFlags2Offset);
   int updated = BackEdgesPatchedForOSRField::update(previous, value);
   WRITE_UINT32_FIELD(this, kKindSpecificFlags2Offset, updated);
 }
 
 
 
 byte Code::to_boolean_state() {
-  return extra_ic_state();
+  return extended_extra_ic_state();
 }
 
 
 bool Code::has_function_cache() {
   ASSERT(kind() == STUB);
   return HasFunctionCacheField::decode(
       READ_UINT32_FIELD(this, kKindSpecificFlags1Offset));
 }
 
 
@@ skipping 50 matching lines @@
   ASSERT(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,
+                               int argc,
                                InlineCacheHolderFlag holder) {
+  ASSERT(argc <= Code::kMaxArguments);
   // Compute the bit mask.
   unsigned int bits = KindField::encode(kind)
       | ICStateField::encode(ic_state)
       | TypeField::encode(type)
-      | ExtraICStateField::encode(extra_ic_state)
+      | ExtendedExtraICStateField::encode(extra_ic_state)
       | CacheHolderField::encode(holder);
+  if (!Code::needs_extended_extra_ic_state(kind)) {
+    bits |= (argc << kArgumentsCountShift);
+  }
   return static_cast<Flags>(bits);
 }
 
 
 Code::Flags Code::ComputeMonomorphicFlags(Kind kind,
                                           ExtraICState extra_ic_state,
                                           InlineCacheHolderFlag holder,
-                                          StubType type) {
-  return ComputeFlags(kind, MONOMORPHIC, extra_ic_state, type, holder);
+                                          StubType type,
+                                          int argc) {
+  return ComputeFlags(kind, MONOMORPHIC, extra_ic_state, type, argc, holder);
 }
 
 
-Code::Flags Code::ComputeHandlerFlags(Kind handler_kind,
-                                      StubType type,
-                                      InlineCacheHolderFlag holder) {
-  return ComputeFlags(Code::HANDLER, MONOMORPHIC, handler_kind, type, holder);
-}
-
-
 Code::Kind Code::ExtractKindFromFlags(Flags flags) {
   return KindField::decode(flags);
 }
 
 
 InlineCacheState Code::ExtractICStateFromFlags(Flags flags) {
   return ICStateField::decode(flags);
 }
 
 
 ExtraICState Code::ExtractExtraICStateFromFlags(Flags flags) {
   return ExtraICStateField::decode(flags);
 }
 
 
+ExtraICState Code::ExtractExtendedExtraICStateFromFlags(
+    Flags flags) {
+  return ExtendedExtraICStateField::decode(flags);
+}
+
+
 Code::StubType Code::ExtractTypeFromFlags(Flags flags) {
   return TypeField::decode(flags);
 }
 
 
+int Code::ExtractArgumentsCountFromFlags(Flags flags) {
+  return (flags & kArgumentsCountMask) >> kArgumentsCountShift;
+}
+
+
 InlineCacheHolderFlag Code::ExtractCacheHolderFromFlags(Flags flags) {
   return CacheHolderField::decode(flags);
 }
 
 
 Code::Flags Code::RemoveTypeFromFlags(Flags flags) {
   int bits = flags & ~TypeField::kMask;
   return static_cast<Flags>(bits);
 }
 
 
 Code* Code::GetCodeFromTargetAddress(Address address) {
   HeapObject* code = HeapObject::FromAddress(address - Code::kHeaderSize);
   // GetCodeFromTargetAddress might be called when marking objects during mark
   // sweep. reinterpret_cast is therefore used instead of the more appropriate
   // Code::cast. Code::cast does not work when the object's map is
   // marked.
   Code* result = reinterpret_cast<Code*>(code);
   return result;
 }
 
 
 Object* Code::GetObjectFromEntryAddress(Address location_of_address) {
   return HeapObject::
       FromAddress(Memory::Address_at(location_of_address) - Code::kHeaderSize);
 }
 
 
-bool Code::IsWeakObjectInOptimizedCode(Object* object) {
-  ASSERT(is_optimized_code());
-  if (object->IsMap()) {
-    return Map::cast(object)->CanTransition() &&
-           FLAG_collect_maps &&
-           FLAG_weak_embedded_maps_in_optimized_code;
-  }
-  if (object->IsJSObject() ||
-      (object->IsCell() && Cell::cast(object)->value()->IsJSObject())) {
-    return FLAG_weak_embedded_objects_in_optimized_code;
-  }
-  return false;
-}
-
-
 Object* Map::prototype() {
   return READ_FIELD(this, kPrototypeOffset);
 }
 
 
 void Map::set_prototype(Object* value, WriteBarrierMode mode) {
   ASSERT(value->IsNull() || value->IsJSReceiver());
   WRITE_FIELD(this, kPrototypeOffset, value);
   CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kPrototypeOffset, value, mode);
 }
@@ skipping 1073 matching lines @@
 JSDate* JSDate::cast(Object* obj) {
   ASSERT(obj->IsJSDate());
   ASSERT(HeapObject::cast(obj)->Size() == JSDate::kSize);
   return reinterpret_cast<JSDate*>(obj);
 }
 
 
 ACCESSORS(JSMessageObject, type, String, kTypeOffset)
 ACCESSORS(JSMessageObject, arguments, JSArray, kArgumentsOffset)
 ACCESSORS(JSMessageObject, script, Object, kScriptOffset)
+ACCESSORS(JSMessageObject, stack_trace, Object, kStackTraceOffset)
 ACCESSORS(JSMessageObject, stack_frames, Object, kStackFramesOffset)
 SMI_ACCESSORS(JSMessageObject, start_position, kStartPositionOffset)
 SMI_ACCESSORS(JSMessageObject, end_position, kEndPositionOffset)
 
 
 JSMessageObject* JSMessageObject::cast(Object* obj) {
   ASSERT(obj->IsJSMessageObject());
   ASSERT(HeapObject::cast(obj)->Size() == JSMessageObject::kSize);
   return reinterpret_cast<JSMessageObject*>(obj);
 }
@@ skipping 862 matching lines @@
   return GetHeap()->CopyFixedDoubleArray(this);
 }
 
 
 MaybeObject* ConstantPoolArray::Copy() {
   if (length() == 0) return this;
   return GetHeap()->CopyConstantPoolArray(this);
 }
 
 
-Handle<Object> TypeFeedbackInfo::UninitializedSentinel(Isolate* isolate) {
+void TypeFeedbackCells::SetAstId(int index, TypeFeedbackId id) {
+  set(1 + index * 2, Smi::FromInt(id.ToInt()));
+}
+
+
+TypeFeedbackId TypeFeedbackCells::AstId(int index) {
+  return TypeFeedbackId(Smi::cast(get(1 + index * 2))->value());
+}
+
+
+void TypeFeedbackCells::SetCell(int index, Cell* cell) {
+  set(index * 2, cell);
+}
+
+
+Cell* TypeFeedbackCells::GetCell(int index) {
+  return Cell::cast(get(index * 2));
+}
+
+
+Handle<Object> TypeFeedbackCells::UninitializedSentinel(Isolate* isolate) {
   return isolate->factory()->the_hole_value();
 }
 
 
-Handle<Object> TypeFeedbackInfo::MegamorphicSentinel(Isolate* isolate) {
+Handle<Object> TypeFeedbackCells::MegamorphicSentinel(Isolate* isolate) {
   return isolate->factory()->undefined_value();
 }
 
 
-Handle<Object> TypeFeedbackInfo::MonomorphicArraySentinel(Isolate* isolate,
+Handle<Object> TypeFeedbackCells::MonomorphicArraySentinel(Isolate* isolate,
     ElementsKind elements_kind) {
   return Handle<Object>(Smi::FromInt(static_cast<int>(elements_kind)), isolate);
 }
 
 
-Object* TypeFeedbackInfo::RawUninitializedSentinel(Heap* heap) {
+Object* TypeFeedbackCells::RawUninitializedSentinel(Heap* heap) {
   return heap->the_hole_value();
 }
 
 
 int TypeFeedbackInfo::ic_total_count() {
   int current = Smi::cast(READ_FIELD(this, kStorage1Offset))->value();
   return ICTotalCountField::decode(current);
 }
 
 
@@ skipping 62 matching lines @@
 }
 
 
 bool TypeFeedbackInfo::matches_inlined_type_change_checksum(int checksum) {
   int value = Smi::cast(READ_FIELD(this, kStorage2Offset))->value();
   int mask = (1 << kTypeChangeChecksumBits) - 1;
   return InlinedTypeChangeChecksum::decode(value) == (checksum & mask);
 }
 
 
-ACCESSORS(TypeFeedbackInfo, feedback_vector, FixedArray,
-          kFeedbackVectorOffset)
+ACCESSORS(TypeFeedbackInfo, type_feedback_cells, TypeFeedbackCells,
+          kTypeFeedbackCellsOffset)
 
 
 SMI_ACCESSORS(AliasedArgumentsEntry, aliased_context_slot, kAliasedContextSlot)
 
 
 Relocatable::Relocatable(Isolate* isolate) {
   isolate_ = isolate;
   prev_ = isolate->relocatable_top();
   isolate->set_relocatable_top(this);
 }
@@ skipping 93 matching lines @@
 #undef READ_UINT32_FIELD
 #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_