Create AllocationSite objects, pointed to by AllocationSiteInfo.

src/hydrogen-instructions.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 5329 matching lines @@
   }
 
   static HObjectAccess ForElementsPointer() {
     return HObjectAccess(kElementsPointer, JSObject::kElementsOffset);
   }
 
   static HObjectAccess ForArrayLength() {
     return HObjectAccess(kArrayLengths, JSArray::kLengthOffset);
   }
 
+  static HObjectAccess ForAllocationSitePayload() {
+    return HObjectAccess(kInobject, AllocationSite::kPayloadOffset);
+  }
+
   static HObjectAccess ForFixedArrayLength() {
     return HObjectAccess(kArrayLengths, FixedArray::kLengthOffset);
   }
 
   static HObjectAccess ForPropertiesPointer() {
     return HObjectAccess(kInobject, JSObject::kPropertiesOffset);
   }
 
   static HObjectAccess ForPrototypeOrInitialMap() {
     return HObjectAccess(kInobject, JSFunction::kPrototypeOrInitialMapOffset);
   }
 
   static HObjectAccess ForMap() {
     return HObjectAccess(kMaps, JSObject::kMapOffset);
   }
 
-  static HObjectAccess ForAllocationSitePayload() {
-    return HObjectAccess(kInobject, AllocationSiteInfo::kPayloadOffset);
+  static HObjectAccess ForPropertyCellValue() {
+    return HObjectAccess(kInobject, PropertyCell::kValueOffset);
+  }
+
+  static HObjectAccess ForCellValue() {
+    return HObjectAccess(kInobject, Cell::kValueOffset);
+  }
+
+  static HObjectAccess ForAllocationSiteInfoSite() {
+    return HObjectAccess(kInobject, AllocationSiteInfo::kAllocationSiteOffset);
   }
 
   // Create an access to an offset in a fixed array header.
   static HObjectAccess ForFixedArrayHeader(int offset);
 
   // Create an access to an in-object property in a JSObject.
   static HObjectAccess ForJSObjectOffset(int offset);
 
   // Create an access to an in-object property in a JSArray.
   static HObjectAccess ForJSArrayOffset(int offset);
@@ skipping 407 matching lines @@
  public:
   HStoreNamedField(HValue* obj,
                    HObjectAccess access,
                    HValue* val,
                    Representation field_representation
                        = Representation::Tagged())
       : access_(access),
         field_representation_(field_representation),
         transition_(),
         transition_unique_id_(),
-        new_space_dominator_(NULL) {
+        new_space_dominator_(NULL),
+        write_barrier_mode_(UPDATE_WRITE_BARRIER) {
     SetOperandAt(0, obj);
     SetOperandAt(1, val);
     access.SetGVNFlags(this, true);
   }
 
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedField)
 
   virtual bool HasEscapingOperandAt(int index) { return index == 1; }
   virtual Representation RequiredInputRepresentation(int index) {
     if (FLAG_track_double_fields &&
         index == 1 && field_representation_.IsDouble()) {
       return field_representation_;
     } else if (FLAG_track_fields &&
                index == 1 && field_representation_.IsSmi()) {
       return field_representation_;
     }
     return Representation::Tagged();
   }
   virtual void SetSideEffectDominator(GVNFlag side_effect, HValue* dominator) {
     ASSERT(side_effect == kChangesNewSpacePromotion);
     new_space_dominator_ = dominator;
   }
   virtual void PrintDataTo(StringStream* stream);
 
+  void SkipWriteBarrier() { write_barrier_mode_ = SKIP_WRITE_BARRIER; }
+  bool IsSkipWriteBarrier() const {
+    return write_barrier_mode_ == SKIP_WRITE_BARRIER;
+  }
+
   HValue* object() { return OperandAt(0); }
   HValue* value() { return OperandAt(1); }
 
   HObjectAccess access() const { return access_; }
   Handle<Map> transition() const { return transition_; }
   UniqueValueId transition_unique_id() const { return transition_unique_id_; }
   void SetTransition(Handle<Map> map, CompilationInfo* info) {
     ASSERT(transition_.is_null());  // Only set once.
     if (map->CanBeDeprecated()) {
       map->AddDependentCompilationInfo(DependentCode::kTransitionGroup, info);
     }
     transition_ = map;
   }
   HValue* new_space_dominator() const { return new_space_dominator_; }
 
   bool NeedsWriteBarrier() {
     ASSERT(!(FLAG_track_double_fields && field_representation_.IsDouble()) ||
            transition_.is_null());
+    if (IsSkipWriteBarrier()) return false;
     return (!FLAG_track_fields || !field_representation_.IsSmi()) &&
         // If there is a transition, a new storage object needs to be allocated.
         !(FLAG_track_double_fields && field_representation_.IsDouble()) &&
         StoringValueNeedsWriteBarrier(value()) &&
         ReceiverObjectNeedsWriteBarrier(object(), new_space_dominator());
   }
 
   bool NeedsWriteBarrierForMap() {
+    if (IsSkipWriteBarrier()) return false;
     return ReceiverObjectNeedsWriteBarrier(object(), new_space_dominator());
   }
 
   virtual void FinalizeUniqueValueId() {
     transition_unique_id_ = UniqueValueId(transition_);
   }
 
   Representation field_representation() const {
     return field_representation_;
   }
 
  private:
   HObjectAccess access_;
   Representation field_representation_;
   Handle<Map> transition_;
   UniqueValueId transition_unique_id_;
   HValue* new_space_dominator_;
+  WriteBarrierMode write_barrier_mode_;
 };
 
 
 class HStoreNamedGeneric: public HTemplateInstruction<3> {
  public:
   HStoreNamedGeneric(HValue* context,
                      HValue* object,
                      Handle<String> name,
                      HValue* value,
                      StrictModeFlag strict_mode_flag)
@@ skipping 816 matching lines @@
   virtual bool IsDeletable() const { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_