A64: Synchronize with r16756.

src/objects.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 1109 matching lines @@
   V(kExpected0AsASmiSentinel, "Expected 0 as a Smi sentinel")                 \
   V(kExpectedAlignmentMarker, "expected alignment marker")                    \
   V(kExpectedFunctionObject, "expected function object in register")          \
   V(kExpectedHeapNumber, "expected HeapNumber")                               \
   V(kExpectedNativeContext, "expected native context")                        \
   V(kExpectedNonIdenticalObjects, "expected non-identical objects")           \
   V(kExpectedNonNullContext, "expected non-null context")                     \
   V(kExpectedPositiveZero, "expected +0.0")                                   \
   V(kExpectedPropertyCellInTypeInfoCell,                                      \
     "Expected property cell in type_info_cell")                               \
+  V(kExpectedAllocationSiteInCell,                                            \
+    "Expected AllocationSite in property cell")                               \
   V(kExpectedPropertyCellInRegisterA2,                                        \
     "Expected property cell in register a2")                                  \
   V(kExpectedPropertyCellInRegisterEbx,                                       \
     "Expected property cell in register ebx")                                 \
   V(kExpectedPropertyCellInRegisterRbx,                                       \
     "Expected property cell in register rbx")                                 \
   V(kExpectedSmiOrHeapNumber, "expected smi or HeapNumber")                   \
   V(kExpectingAlignmentForCopyBytes,                                          \
     "Expecting alignment for CopyBytes")                                      \
   V(kExportDeclaration, "Export declaration")                                 \
@@ skipping 649 matching lines @@
   // Useful when the map pointer field is used for other purposes.
   // GC internal.
   inline int SizeFromMap(Map* map);
 
   // Returns the field at offset in obj, as a read/write Object* reference.
   // Does no checking, and is safe to use during GC, while maps are invalid.
   // Does not invoke write barrier, so should only be assigned to
   // during marking GC.
   static inline Object** RawField(HeapObject* obj, int offset);
 
+  // Adds the |code| object related to |name| to the code cache of this map. If
+  // this map is a dictionary map that is shared, the map copied and installed
+  // onto the object.
+  static void UpdateMapCodeCache(Handle<HeapObject> object,
+                                 Handle<Name> name,
+                                 Handle<Code> code);
+
   // Casting.
   static inline HeapObject* cast(Object* obj);
 
   // Return the write barrier mode for this. Callers of this function
   // must be able to present a reference to an DisallowHeapAllocation
   // object as a sign that they are not going to use this function
   // from code that allocates and thus invalidates the returned write
   // barrier mode.
   inline WriteBarrierMode GetWriteBarrierMode(
       const DisallowHeapAllocation& promise);
@@ skipping 412 matching lines @@
   static void AllocateStorageForMap(Handle<JSObject> object, Handle<Map> map);
   inline MUST_USE_RESULT MaybeObject* AllocateStorageForMap(Map* map);
 
   static void MigrateInstance(Handle<JSObject> instance);
   inline MUST_USE_RESULT MaybeObject* MigrateInstance();
 
   static Handle<Object> TryMigrateInstance(Handle<JSObject> instance);
   inline MUST_USE_RESULT MaybeObject* TryMigrateInstance();
 
   // Can cause GC.
-  MUST_USE_RESULT MaybeObject* SetLocalPropertyIgnoreAttributes(
-      Name* key,
-      Object* value,
-      PropertyAttributes attributes,
-      ValueType value_type = OPTIMAL_REPRESENTATION,
-      StoreMode mode = ALLOW_AS_CONSTANT,
-      ExtensibilityCheck extensibility_check = PERFORM_EXTENSIBILITY_CHECK);
   MUST_USE_RESULT MaybeObject* SetLocalPropertyIgnoreAttributesTrampoline(
       Name* key,
       Object* value,
       PropertyAttributes attributes,
       ValueType value_type = OPTIMAL_REPRESENTATION,
       StoreMode mode = ALLOW_AS_CONSTANT,
       ExtensibilityCheck extensibility_check = PERFORM_EXTENSIBILITY_CHECK);
 
   // Retrieve a value in a normalized object given a lookup result.
   // Handles the special representation of JS global objects.
@@ skipping 359 matching lines @@
       PropertyNormalizationMode mode,
       int expected_additional_properties);
 
   // Convert and update the elements backing store to be a
   // SeededNumberDictionary dictionary.  Returns the backing after conversion.
   static Handle<SeededNumberDictionary> NormalizeElements(
       Handle<JSObject> object);
 
   MUST_USE_RESULT MaybeObject* NormalizeElements();
 
-  static void UpdateMapCodeCache(Handle<JSObject> object,
-                                 Handle<Name> name,
-                                 Handle<Code> code);
-
   // Transform slow named properties to fast variants.
   // Returns failure if allocation failed.
   static void TransformToFastProperties(Handle<JSObject> object,
                                         int unused_property_fields);
 
   MUST_USE_RESULT MaybeObject* TransformToFastProperties(
       int unused_property_fields);
 
   // Access fast-case object properties at index.
   MUST_USE_RESULT inline MaybeObject* FastPropertyAt(
@@ skipping 34 matching lines @@
   static Handle<Object> PreventExtensions(Handle<JSObject> object);
   MUST_USE_RESULT MaybeObject* PreventExtensions();
 
   // ES5 Object.freeze
   MUST_USE_RESULT MaybeObject* Freeze(Isolate* isolate);
 
 
   // Called the first time an object is observed with ES7 Object.observe.
   MUST_USE_RESULT MaybeObject* SetObserved(Isolate* isolate);
 
-  // Copy object
-  MUST_USE_RESULT MaybeObject* DeepCopy(Isolate* isolate);
+  // Copy object.
+  static Handle<JSObject> Copy(Handle<JSObject> object);
+  static Handle<JSObject> DeepCopy(Handle<JSObject> object);
 
   // Dispatched behavior.
   void JSObjectShortPrint(StringStream* accumulator);
   DECLARE_PRINTER(JSObject)
   DECLARE_VERIFIER(JSObject)
 #ifdef OBJECT_PRINT
   void PrintProperties(FILE* out = stdout);
   void PrintElements(FILE* out = stdout);
   void PrintTransitions(FILE* out = stdout);
 #endif
@@ skipping 82 matching lines @@
                                   Handle<Name> name,
                                   Handle<Object> old_value);
 
   // Deliver change records to observers. May cause GC.
   static void DeliverChangeRecords(Isolate* isolate);
 
  private:
   friend class DictionaryElementsAccessor;
   friend class JSReceiver;
 
+  // TODO(mstarzinger): Soon to be handlified.
+  MUST_USE_RESULT MaybeObject* SetLocalPropertyIgnoreAttributes(
+      Name* key,
+      Object* value,
+      PropertyAttributes attributes,
+      ValueType value_type = OPTIMAL_REPRESENTATION,
+      StoreMode mode = ALLOW_AS_CONSTANT,
+      ExtensibilityCheck extensibility_check = PERFORM_EXTENSIBILITY_CHECK);
+
   MUST_USE_RESULT MaybeObject* GetElementWithCallback(Object* receiver,
                                                       Object* structure,
                                                       uint32_t index,
                                                       Object* holder);
   MUST_USE_RESULT PropertyAttributes GetElementAttributeWithInterceptor(
       JSReceiver* receiver,
       uint32_t index,
       bool continue_search);
   MUST_USE_RESULT PropertyAttributes GetElementAttributeWithoutInterceptor(
       JSReceiver* receiver,
@@ skipping 2048 matching lines @@
 
   static const char* Kind2String(Kind kind);
 
   // Types of stubs.
   enum StubType {
     NORMAL,
     FIELD,
     CONSTANT,
     CALLBACKS,
     INTERCEPTOR,
-    MAP_TRANSITION,
+    TRANSITION,
     NONEXISTENT
   };
 
   enum StubHolder {
     OWN_STUB,
     PROTOTYPE_STUB
   };
 
   typedef int ExtraICState;
 
@@ skipping 322 matching lines @@
     kAfterLastCodeAge,
     kLastCodeAge = kAfterLastCodeAge - 1,
     kCodeAgeCount = kAfterLastCodeAge - 1
   };
 #undef DECLARE_CODE_AGE_ENUM
 
   // Code aging.  Indicates how many full GCs this code has survived without
   // being entered through the prologue.  Used to determine when it is
   // relatively safe to flush this code object and replace it with the lazy
   // compilation stub.
-  static void MakeCodeAgeSequenceYoung(byte* sequence);
+  static void MakeCodeAgeSequenceYoung(byte* sequence, Isolate* isolate);
   void MakeOlder(MarkingParity);
   static bool IsYoungSequence(byte* sequence);
   bool IsOld();
   int GetAge();
 
   void PrintDeoptLocation(int bailout_id);
   bool CanDeoptAt(Address pc);
 
 #ifdef VERIFY_HEAP
   void VerifyEmbeddedMapsDependency();
@@ skipping 125 matching lines @@
 
  private:
   friend class RelocIterator;
 
   // Code aging
   byte* FindCodeAgeSequence();
   static void GetCodeAgeAndParity(Code* code, Age* age,
                                   MarkingParity* parity);
   static void GetCodeAgeAndParity(byte* sequence, Age* age,
                                   MarkingParity* parity);
-  static Code* GetCodeAgeStub(Age age, MarkingParity parity);
+  static Code* GetCodeAgeStub(Isolate* isolate, Age age, MarkingParity parity);
 
   // Code aging -- platform-specific
-  static void PatchPlatformCodeAge(byte* sequence, Age age,
+  static void PatchPlatformCodeAge(Isolate* isolate,
+                                   byte* sequence, Age age,
                                    MarkingParity parity);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Code);
 };
 
 
 class CompilationInfo;
 
 // This class describes the layout of dependent codes array of a map. The
 // array is partitioned into several groups of dependent codes. Each group
@@ skipping 602 matching lines @@
   // heap verification is turned on.
   void ZapPrototypeTransitions();
   void ZapTransitions();
 
   bool CanTransition() {
     // Only JSObject and subtypes have map transitions and back pointers.
     STATIC_ASSERT(LAST_TYPE == LAST_JS_OBJECT_TYPE);
     return instance_type() >= FIRST_JS_OBJECT_TYPE;
   }
 
+  bool IsJSObjectMap() {
+    return instance_type() >= FIRST_JS_OBJECT_TYPE;
+  }
+
   // Fires when the layout of an object with a leaf map changes.
   // This includes adding transitions to the leaf map or changing
   // the descriptor array.
   inline void NotifyLeafMapLayoutChange();
 
   inline bool CanOmitMapChecks();
 
   void AddDependentCompilationInfo(DependentCode::DependencyGroup group,
                                    CompilationInfo* info);
 
@@ skipping 1050 matching lines @@
   // Tells whether or not this function has been optimized.
   inline bool IsOptimized();
 
   // Tells whether or not this function can be optimized.
   inline bool IsOptimizable();
 
   // Mark this function for lazy recompilation. The function will be
   // recompiled the next time it is executed.
   void MarkForLazyRecompilation();
   void MarkForConcurrentRecompilation();
-  void MarkForInstallingRecompiledCode();
   void MarkInRecompileQueue();
 
   // Helpers to compile this function.  Returns true on success, false on
   // failure (e.g., stack overflow during compilation).
   static bool EnsureCompiled(Handle<JSFunction> function,
                              ClearExceptionFlag flag);
   static bool CompileLazy(Handle<JSFunction> function,
                           ClearExceptionFlag flag);
   static Handle<Code> CompileOsr(Handle<JSFunction> function,
                                  BailoutId osr_ast_id,
                                  ClearExceptionFlag flag);
   static bool CompileOptimized(Handle<JSFunction> function,
                                ClearExceptionFlag flag);
 
   // Tells whether or not the function is already marked for lazy
   // recompilation.
   inline bool IsMarkedForLazyRecompilation();
   inline bool IsMarkedForConcurrentRecompilation();
-  inline bool IsMarkedForInstallingRecompiledCode();
 
   // Tells whether or not the function is on the concurrent recompilation queue.
   inline bool IsInRecompileQueue();
 
   // Check whether or not this function is inlineable.
   bool IsInlineable();
 
   // [literals_or_bindings]: Fixed array holding either
   // the materialized literals or the bindings of a bound function.
   //
@@ skipping 3212 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_