A64: Synchronize with r18764.

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 370 matching lines @@
   /* Object::IsExternalArray(). */                                             \
   V(EXTERNAL_BYTE_ARRAY_TYPE)                                                  \
   V(EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE)                                         \
   V(EXTERNAL_SHORT_ARRAY_TYPE)                                                 \
   V(EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE)                                        \
   V(EXTERNAL_INT_ARRAY_TYPE)                                                   \
   V(EXTERNAL_UNSIGNED_INT_ARRAY_TYPE)                                          \
   V(EXTERNAL_FLOAT_ARRAY_TYPE)                                                 \
   V(EXTERNAL_DOUBLE_ARRAY_TYPE)                                                \
   V(EXTERNAL_PIXEL_ARRAY_TYPE)                                                 \
+                                                                               \
+  V(FIXED_INT8_ARRAY_TYPE)                                                     \
+  V(FIXED_UINT8_ARRAY_TYPE)                                                    \
+  V(FIXED_INT16_ARRAY_TYPE)                                                    \
+  V(FIXED_UINT16_ARRAY_TYPE)                                                   \
+  V(FIXED_INT32_ARRAY_TYPE)                                                    \
+  V(FIXED_UINT32_ARRAY_TYPE)                                                   \
+  V(FIXED_FLOAT32_ARRAY_TYPE)                                                  \
+  V(FIXED_FLOAT64_ARRAY_TYPE)                                                  \
+  V(FIXED_UINT8_CLAMPED_ARRAY_TYPE)                                            \
+                                                                               \
   V(FILLER_TYPE)                                                               \
                                                                                \
   V(DECLARED_ACCESSOR_DESCRIPTOR_TYPE)                                         \
   V(DECLARED_ACCESSOR_INFO_TYPE)                                               \
   V(EXECUTABLE_ACCESSOR_INFO_TYPE)                                             \
   V(ACCESSOR_PAIR_TYPE)                                                        \
   V(ACCESS_CHECK_INFO_TYPE)                                                    \
   V(INTERCEPTOR_INFO_TYPE)                                                     \
   V(CALL_HANDLER_INFO_TYPE)                                                    \
   V(FUNCTION_TEMPLATE_INFO_TYPE)                                               \
@@ skipping 314 matching lines @@
   FREE_SPACE_TYPE,
   EXTERNAL_BYTE_ARRAY_TYPE,  // FIRST_EXTERNAL_ARRAY_TYPE
   EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE,
   EXTERNAL_SHORT_ARRAY_TYPE,
   EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE,
   EXTERNAL_INT_ARRAY_TYPE,
   EXTERNAL_UNSIGNED_INT_ARRAY_TYPE,
   EXTERNAL_FLOAT_ARRAY_TYPE,
   EXTERNAL_DOUBLE_ARRAY_TYPE,
   EXTERNAL_PIXEL_ARRAY_TYPE,  // LAST_EXTERNAL_ARRAY_TYPE
+
+  FIXED_INT8_ARRAY_TYPE,  // FIRST_FIXED_TYPED_ARRAY_TYPE
+  FIXED_UINT8_ARRAY_TYPE,
+  FIXED_INT16_ARRAY_TYPE,
+  FIXED_UINT16_ARRAY_TYPE,
+  FIXED_INT32_ARRAY_TYPE,
+  FIXED_UINT32_ARRAY_TYPE,
+  FIXED_FLOAT32_ARRAY_TYPE,
+  FIXED_FLOAT64_ARRAY_TYPE,
+  FIXED_UINT8_CLAMPED_ARRAY_TYPE,  // LAST_FIXED_TYPED_ARRAY_TYPE
+
   FIXED_DOUBLE_ARRAY_TYPE,
   FILLER_TYPE,  // LAST_DATA_TYPE
 
   // Structs.
   DECLARED_ACCESSOR_DESCRIPTOR_TYPE,
   DECLARED_ACCESSOR_INFO_TYPE,
   EXECUTABLE_ACCESSOR_INFO_TYPE,
   ACCESSOR_PAIR_TYPE,
   ACCESS_CHECK_INFO_TYPE,
   INTERCEPTOR_INFO_TYPE,
@@ skipping 57 matching lines @@
   FIRST_TYPE = 0x0,
   LAST_TYPE = JS_FUNCTION_TYPE,
   FIRST_NAME_TYPE = FIRST_TYPE,
   LAST_NAME_TYPE = SYMBOL_TYPE,
   FIRST_UNIQUE_NAME_TYPE = INTERNALIZED_STRING_TYPE,
   LAST_UNIQUE_NAME_TYPE = SYMBOL_TYPE,
   FIRST_NONSTRING_TYPE = SYMBOL_TYPE,
   // Boundaries for testing for an external array.
   FIRST_EXTERNAL_ARRAY_TYPE = EXTERNAL_BYTE_ARRAY_TYPE,
   LAST_EXTERNAL_ARRAY_TYPE = EXTERNAL_PIXEL_ARRAY_TYPE,
+  // Boundaries for testing for a fixed typed array.
+  FIRST_FIXED_TYPED_ARRAY_TYPE = FIXED_INT8_ARRAY_TYPE,
+  LAST_FIXED_TYPED_ARRAY_TYPE = FIXED_UINT8_CLAMPED_ARRAY_TYPE,
   // Boundary for promotion to old data space/old pointer space.
   LAST_DATA_TYPE = FILLER_TYPE,
   // Boundary for objects represented as JSReceiver (i.e. JSObject or JSProxy).
   // Note that there is no range for JSObject or JSProxy, since their subtypes
   // are not continuous in this enum! The enum ranges instead reflect the
   // external class names, where proxies are treated as either ordinary objects,
   // or functions.
   FIRST_JS_RECEIVER_TYPE = JS_FUNCTION_PROXY_TYPE,
   LAST_JS_RECEIVER_TYPE = LAST_TYPE,
   // Boundaries for testing the types represented as JSObject
@@ skipping 64 matching lines @@
 class AllocationSite;
 class AllocationSiteCreationContext;
 class AllocationSiteUsageContext;
 class DictionaryElementsAccessor;
 class ElementsAccessor;
 class Failure;
 class FixedArrayBase;
 class GlobalObject;
 class ObjectVisitor;
 class StringStream;
-// We cannot just say "class Type;" if it is created from a template... =8-?
+// We cannot just say "class HeapType;" if it is created from a template... =8-?
 template<class> class TypeImpl;
 struct HeapTypeConfig;
-typedef TypeImpl<HeapTypeConfig> Type;
+typedef TypeImpl<HeapTypeConfig> HeapType;
 
 
 // A template-ized version of the IsXXX functions.
 template <class C> inline bool Is(Object* obj);
 
 #ifdef VERIFY_HEAP
 #define DECLARE_VERIFIER(Name) void Name##Verify();
 #else
 #define DECLARE_VERIFIER(Name)
 #endif
@@ skipping 84 matching lines @@
   V(ExternalArray)                             \
   V(ExternalByteArray)                         \
   V(ExternalUnsignedByteArray)                 \
   V(ExternalShortArray)                        \
   V(ExternalUnsignedShortArray)                \
   V(ExternalIntArray)                          \
   V(ExternalUnsignedIntArray)                  \
   V(ExternalFloatArray)                        \
   V(ExternalDoubleArray)                       \
   V(ExternalPixelArray)                        \
+  V(FixedTypedArrayBase)                       \
+  V(FixedUint8Array)                           \
+  V(FixedInt8Array)                            \
+  V(FixedUint16Array)                          \
+  V(FixedInt16Array)                           \
+  V(FixedUint32Array)                          \
+  V(FixedInt32Array)                           \
+  V(FixedFloat32Array)                         \
+  V(FixedFloat64Array)                         \
+  V(FixedUint8ClampedArray)                    \
   V(ByteArray)                                 \
   V(FreeSpace)                                 \
   V(JSReceiver)                                \
   V(JSObject)                                  \
   V(JSContextExtensionObject)                  \
   V(JSGeneratorObject)                         \
   V(JSModule)                                  \
   V(Map)                                       \
   V(DescriptorArray)                           \
   V(TransitionArray)                           \
@@ skipping 1139 matching lines @@
   // Returns true if an object has any of the fast elements kinds.
   inline bool HasFastElements();
   // Returns true if an object has elements of FAST_DOUBLE_ELEMENTS
   // ElementsKind.
   inline bool HasFastDoubleElements();
   // Returns true if an object has elements of FAST_HOLEY_*_ELEMENTS
   // ElementsKind.
   inline bool HasFastHoleyElements();
   inline bool HasNonStrictArgumentsElements();
   inline bool HasDictionaryElements();
+
   inline bool HasExternalPixelElements();
   inline bool HasExternalArrayElements();
   inline bool HasExternalByteElements();
   inline bool HasExternalUnsignedByteElements();
   inline bool HasExternalShortElements();
   inline bool HasExternalUnsignedShortElements();
   inline bool HasExternalIntElements();
   inline bool HasExternalUnsignedIntElements();
   inline bool HasExternalFloatElements();
   inline bool HasExternalDoubleElements();
+
+  inline bool HasFixedTypedArrayElements();
+
   bool HasFastArgumentsElements();
   bool HasDictionaryArgumentsElements();
   inline SeededNumberDictionary* element_dictionary();  // Gets slow elements.
 
   inline void set_map_and_elements(
       Map* map,
       FixedArrayBase* value,
       WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
 
   // Requires: HasFastElements().
@@ skipping 802 matching lines @@
   inline void set_undefined(int index);
   inline void set_null(int index);
   inline void set_the_hole(int index);
 
   inline Object** GetFirstElementAddress();
   inline bool ContainsOnlySmisOrHoles();
 
   // Gives access to raw memory which stores the array's data.
   inline Object** data_start();
 
+  // Shrink length and insert filler objects.
+  void Shrink(int length);
+
   // Copy operations.
   MUST_USE_RESULT inline MaybeObject* Copy();
   MUST_USE_RESULT MaybeObject* CopySize(int new_length,
                                         PretenureFlag pretenure = NOT_TENURED);
 
   // Add the elements of a JSArray to this FixedArray.
   MUST_USE_RESULT MaybeObject* AddKeysFromJSArray(JSArray* array);
 
   // Compute the union of this and other.
   MUST_USE_RESULT MaybeObject* UnionOfKeys(FixedArray* other);
@@ skipping 767 matching lines @@
 // StringTable.
 //
 // No special elements in the prefix and the element size is 1
 // because only the string itself (the key) needs to be stored.
 class StringTable: public HashTable<StringTableShape, HashTableKey*> {
  public:
   // Find string in the string table.  If it is not there yet, it is
   // added.  The return value is the string table which might have
   // been enlarged.  If the return value is not a failure, the string
   // pointer *s is set to the string found.
-  MUST_USE_RESULT MaybeObject* LookupUtf8String(
-      Vector<const char> str,
-      Object** s);
-  MUST_USE_RESULT MaybeObject* LookupOneByteString(
-      Vector<const uint8_t> str,
-      Object** s);
-  MUST_USE_RESULT MaybeObject* LookupSubStringOneByteString(
-      Handle<SeqOneByteString> str,
-      int from,
-      int length,
-      Object** s);
-  MUST_USE_RESULT MaybeObject* LookupTwoByteString(
-      Vector<const uc16> str,
-      Object** s);
   MUST_USE_RESULT MaybeObject* LookupString(String* key, Object** s);
+  MUST_USE_RESULT MaybeObject* LookupKey(HashTableKey* key, Object** s);
 
   // Looks up a string that is equal to the given string and returns
   // true if it is found, assigning the string to the given output
   // parameter.
   bool LookupStringIfExists(String* str, String** result);
   bool LookupTwoCharsStringIfExists(uint16_t c1, uint16_t c2, String** result);
 
   // Casting.
   static inline StringTable* cast(Object* obj);
 
  private:
-  MUST_USE_RESULT MaybeObject* LookupKey(HashTableKey* key, Object** s);
-
   template <bool seq_ascii> friend class JsonParser;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(StringTable);
 };
 
 
 class MapCacheShape : public BaseShape<HashTableKey*> {
  public:
   static inline bool IsMatch(HashTableKey* key, Object* value) {
     return key->IsMatch(value);
@@ skipping 1052 matching lines @@
 
   // Dispatched behavior.
   DECLARE_PRINTER(ExternalDoubleArray)
   DECLARE_VERIFIER(ExternalDoubleArray)
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ExternalDoubleArray);
 };
 
 
+class FixedTypedArrayBase: public FixedArrayBase {
+ public:
+  // Casting:
+  static inline FixedTypedArrayBase* cast(Object* obj);
+
+  static const int kDataOffset = kHeaderSize;
+
+  inline int size();
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(FixedTypedArrayBase);
+};
+
+
+template <class Traits>
+class FixedTypedArray: public FixedTypedArrayBase {
+ public:
+  typedef typename Traits::ElementType ElementType;
+  static const InstanceType kInstanceType = Traits::kInstanceType;
+
+  // Casting:
+  static inline FixedTypedArray<Traits>* cast(Object* obj);
+
+  static inline int SizeFor(int length) {
+    return kDataOffset + length * sizeof(ElementType);
+  }
+
+  inline ElementType get_scalar(int index);
+  MUST_USE_RESULT inline MaybeObject* get(int index);
+  inline void set(int index, ElementType value);
+
+  // This accessor applies the correct conversion from Smi, HeapNumber
+  // and undefined.
+  MUST_USE_RESULT MaybeObject* SetValue(uint32_t index, Object* value);
+
+  static Handle<Object> SetValue(Handle<FixedTypedArray<Traits> > array,
+                                 uint32_t index,
+                                 Handle<Object> value);
+
+  DECLARE_PRINTER(FixedTypedArray)
+  DECLARE_VERIFIER(FixedTypedArray)
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(FixedTypedArray);
+};
+
+#define FIXED_TYPED_ARRAY_TRAITS(Type, type, TYPE, elementType)               \
+  class Type##ArrayTraits {                                                   \
+    public:                                                                   \
+      typedef elementType ElementType;                                        \
+      static const InstanceType kInstanceType = FIXED_##TYPE##_ARRAY_TYPE;    \
+      static const char* Designator() { return #type " array"; }              \
+      static inline MaybeObject* ToObject(Heap* heap, elementType scalar);    \
+      static elementType defaultValue() { return 0; }                         \
+  };                                                                          \
+                                                                              \
+  typedef FixedTypedArray<Type##ArrayTraits> Fixed##Type##Array;
+
+FIXED_TYPED_ARRAY_TRAITS(Uint8, uint8, UINT8, uint8_t)
+FIXED_TYPED_ARRAY_TRAITS(Int8, int8, INT8, int8_t)
+FIXED_TYPED_ARRAY_TRAITS(Uint16, uint16, UINT16, uint16_t)
+FIXED_TYPED_ARRAY_TRAITS(Int16, int16, INT16, int16_t)
+FIXED_TYPED_ARRAY_TRAITS(Uint32, uint32, UINT32, uint32_t)
+FIXED_TYPED_ARRAY_TRAITS(Int32, int32, INT32, int32_t)
+FIXED_TYPED_ARRAY_TRAITS(Float32, float32, FLOAT32, float)
+FIXED_TYPED_ARRAY_TRAITS(Float64, float64, FLOAT64, double)
+FIXED_TYPED_ARRAY_TRAITS(Uint8Clamped, uint8_clamped, UINT8_CLAMPED, uint8_t)
+
+#undef FIXED_TYPED_ARRAY_TRAITS
+
 // DeoptimizationInputData is a fixed array used to hold the deoptimization
 // data for code generated by the Hydrogen/Lithium compiler.  It also
 // contains information about functions that were inlined.  If N different
 // functions were inlined then first N elements of the literal array will
 // contain these functions.
 //
 // It can be empty.
 class DeoptimizationInputData: public FixedArray {
  public:
   // Layout description.  Indices in the array.
@@ skipping 292 matching lines @@
   inline ExtraICState extended_extra_ic_state();  // Only valid for
                                                   // non-call IC stubs.
   static bool needs_extended_extra_ic_state(Kind kind) {
     // TODO(danno): This is a bit of a hack right now since there are still
     // clients of this API that pass "extra" values in for argc. These clients
     // should be retrofitted to used ExtendedExtraICState.
     return kind == COMPARE_NIL_IC || kind == TO_BOOLEAN_IC ||
            kind == BINARY_OP_IC;
   }
 
-  bool IsContextual();  // Only valid for IC stubs.
   inline StubType type();  // Only valid for monomorphic IC stubs.
   inline int arguments_count();  // Only valid for call IC stubs.
 
   // Testers for IC stub kinds.
   inline bool is_inline_cache_stub();
   inline bool is_debug_stub();
   inline bool is_handler() { return kind() == HANDLER; }
   inline bool is_load_stub() { return kind() == LOAD_IC; }
   inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; }
   inline bool is_store_stub() { return kind() == STORE_IC; }
@@ skipping 676 matching lines @@
   }
 
   inline bool has_non_strict_arguments_elements() {
     return elements_kind() == NON_STRICT_ARGUMENTS_ELEMENTS;
   }
 
   inline bool has_external_array_elements() {
     return IsExternalArrayElementsKind(elements_kind());
   }
 
+  inline bool has_fixed_typed_array_elements() {
+    return IsFixedTypedArrayElementsKind(elements_kind());
+  }
+
   inline bool has_dictionary_elements() {
     return IsDictionaryElementsKind(elements_kind());
   }
 
   inline bool has_slow_elements_kind() {
     return elements_kind() == DICTIONARY_ELEMENTS
         || elements_kind() == NON_STRICT_ARGUMENTS_ELEMENTS;
   }
 
   static bool IsValidElementsTransition(ElementsKind from_kind,
@@ skipping 3557 matching lines @@
                               kSize> BodyDescriptor;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(Cell);
 };
 
 
 class PropertyCell: public Cell {
  public:
   // [type]: type of the global property.
-  Type* type();
-  void set_type(Type* value, WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
+  HeapType* type();
+  void set_type(HeapType* value, WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
 
   // [dependent_code]: dependent code that depends on the type of the global
   // property.
   DECL_ACCESSORS(dependent_code, DependentCode)
 
   // Sets the value of the cell and updates the type field to be the union
   // of the cell's current type and the value's type. If the change causes
   // a change of the type of the cell's contents, code dependent on the cell
   // will be deoptimized.
   static void SetValueInferType(Handle<PropertyCell> cell,
                                 Handle<Object> value);
 
   // Computes the new type of the cell's contents for the given value, but
   // without actually modifying the 'type' field.
-  static Handle<Type> UpdatedType(Handle<PropertyCell> cell,
-                                  Handle<Object> value);
+  static Handle<HeapType> UpdatedType(Handle<PropertyCell> cell,
+                                      Handle<Object> value);
 
   void AddDependentCompilationInfo(CompilationInfo* info);
 
   void AddDependentCode(Handle<Code> code);
 
   // Casting.
   static inline PropertyCell* cast(Object* obj);
 
   inline Address TypeAddress() {
     return address() + kTypeOffset;
@@ skipping 1213 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_