Remove PropertyCell space

src/hydrogen-instructions.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.
 
 #ifndef V8_HYDROGEN_INSTRUCTIONS_H_
 #define V8_HYDROGEN_INSTRUCTIONS_H_
 
 #include <cstring>
 #include <iosfwd>
 
@@ skipping 99 matching lines @@
   V(InvokeFunction)                           \
   V(IsConstructCallAndBranch)                 \
   V(IsObjectAndBranch)                        \
   V(IsStringAndBranch)                        \
   V(IsSmiAndBranch)                           \
   V(IsUndetectableAndBranch)                  \
   V(LeaveInlined)                             \
   V(LoadContextSlot)                          \
   V(LoadFieldByIndex)                         \
   V(LoadFunctionPrototype)                    \
-  V(LoadGlobalCell)                           \
   V(LoadGlobalGeneric)                        \
   V(LoadKeyed)                                \
   V(LoadKeyedGeneric)                         \
   V(LoadNamedField)                           \
   V(LoadNamedGeneric)                         \
   V(LoadRoot)                                 \
   V(MapEnumLength)                            \
   V(MathFloorOfDiv)                           \
   V(MathMinMax)                               \
   V(Mod)                                      \
   V(Mul)                                      \
   V(OsrEntry)                                 \
   V(Parameter)                                \
   V(Power)                                    \
   V(PushArguments)                            \
   V(RegExpLiteral)                            \
   V(Return)                                   \
   V(Ror)                                      \
   V(Sar)                                      \
   V(SeqStringGetChar)                         \
   V(SeqStringSetChar)                         \
   V(Shl)                                      \
   V(Shr)                                      \
   V(Simulate)                                 \
   V(StackCheck)                               \
   V(StoreCodeEntry)                           \
   V(StoreContextSlot)                         \
   V(StoreFrameContext)                        \
-  V(StoreGlobalCell)                          \
   V(StoreKeyed)                               \
   V(StoreKeyedGeneric)                        \
   V(StoreNamedField)                          \
   V(StoreNamedGeneric)                        \
   V(StringAdd)                                \
   V(StringCharCodeAt)                         \
   V(StringCharFromCode)                       \
   V(StringCompareAndBranch)                   \
   V(Sub)                                      \
   V(TailCallThroughMegamorphicCache)          \
@@ skipping 3334 matching lines @@
   }
 
   bool NotInNewSpace() const {
     return IsNotInNewSpaceField::decode(bit_field_);
   }
 
   bool ImmortalImmovable() const;
 
   bool IsCell() const {
     InstanceType instance_type = GetInstanceType();
-    return instance_type == CELL_TYPE || instance_type == PROPERTY_CELL_TYPE;
+    return instance_type == CELL_TYPE;
   }
 
   Representation RequiredInputRepresentation(int index) OVERRIDE {
     return Representation::None();
   }
 
   Representation KnownOptimalRepresentation() OVERRIDE {
     if (HasSmiValue() && SmiValuesAre31Bits()) return Representation::Smi();
     if (HasInteger32Value()) return Representation::Integer32();
     if (HasNumberValue()) return Representation::Double();
@@ skipping 1892 matching lines @@
         incoming_value_(NULL) {
     set_representation(Representation::Tagged());
   }
 
   HEnvironment* environment_;
   int index_;
   HPhi* incoming_value_;
 };
 
 
-class HLoadGlobalCell FINAL : public HTemplateInstruction<0> {
- public:
-  DECLARE_INSTRUCTION_FACTORY_P2(HLoadGlobalCell, Handle<Cell>,
-                                 PropertyDetails);
-
-  Unique<Cell> cell() const { return cell_; }
-  // TODO(dcarney): remove this.
-  bool RequiresHoleCheck() const { return false; }
-
-  std::ostream& PrintDataTo(std::ostream& os) const OVERRIDE;  // NOLINT
-
-  intptr_t Hashcode() OVERRIDE { return cell_.Hashcode(); }
-
-  void FinalizeUniqueness() OVERRIDE { cell_ = Unique<Cell>(cell_.handle()); }
-
-  Representation RequiredInputRepresentation(int index) OVERRIDE {
-    return Representation::None();
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalCell)
-
- protected:
-  bool DataEquals(HValue* other) OVERRIDE {
-    return cell_ == HLoadGlobalCell::cast(other)->cell_;
-  }
-
- private:
-  HLoadGlobalCell(Handle<Cell> cell, PropertyDetails details)
-    : cell_(Unique<Cell>::CreateUninitialized(cell)), details_(details) {
-    set_representation(Representation::Tagged());
-    SetFlag(kUseGVN);
-    SetDependsOnFlag(kGlobalVars);
-  }
-
-  bool IsDeletable() const OVERRIDE { return true; }
-
-  Unique<Cell> cell_;
-  PropertyDetails details_;
-};
-
-
 class HLoadGlobalGeneric FINAL : public HTemplateInstruction<2> {
  public:
   DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P3(HLoadGlobalGeneric, HValue*,
                                               Handle<String>, bool);
 
   HValue* context() { return OperandAt(0); }
   HValue* global_object() { return OperandAt(1); }
   Handle<String> name() const { return name_; }
   bool for_typeof() const { return for_typeof_; }
   FeedbackVectorICSlot slot() const { return slot_; }
@@ skipping 322 matching lines @@
   }
   if (object == dominator &&
       object->IsAllocate() &&
       HAllocate::cast(object)->IsNewSpaceAllocation()) {
     return kPointersToHereAreAlwaysInteresting;
   }
   return kPointersToHereMaybeInteresting;
 }
 
 
-class HStoreGlobalCell FINAL : public HUnaryOperation {
- public:
-  DECLARE_INSTRUCTION_FACTORY_P3(HStoreGlobalCell, HValue*,
-                                 Handle<PropertyCell>, PropertyDetails);
-
-  Unique<PropertyCell> cell() const { return cell_; }
-  // TODO(dcarney): remove
-  bool RequiresHoleCheck() const { return false; }
-  bool NeedsWriteBarrier() {
-    return StoringValueNeedsWriteBarrier(value());
-  }
-
-  void FinalizeUniqueness() OVERRIDE {
-    cell_ = Unique<PropertyCell>(cell_.handle());
-  }
-
-  Representation RequiredInputRepresentation(int index) OVERRIDE {
-    return Representation::Tagged();
-  }
-  std::ostream& PrintDataTo(std::ostream& os) const OVERRIDE;  // NOLINT
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreGlobalCell)
-
- private:
-  HStoreGlobalCell(HValue* value,
-                   Handle<PropertyCell> cell,
-                   PropertyDetails details)
-      : HUnaryOperation(value),
-        cell_(Unique<PropertyCell>::CreateUninitialized(cell)),
-        details_(details) {
-    SetChangesFlag(kGlobalVars);
-  }
-
-  Unique<PropertyCell> cell_;
-  PropertyDetails details_;
-};
-
-
 class HLoadContextSlot FINAL : public HUnaryOperation {
  public:
   enum Mode {
     // Perform a normal load of the context slot without checking its value.
     kNoCheck,
     // Load and check the value of the context slot. Deoptimize if it's the
     // hole value. This is used for checking for loading of uninitialized
     // harmony bindings where we deoptimize into full-codegen generated code
     // which will subsequently throw a reference error.
     kCheckDeoptimize,
@@ skipping 1070 matching lines @@
     }
   }
 
   void SetTransition(HConstant* transition) {
     DCHECK(!has_transition());  // Only set once.
     SetOperandAt(2, transition);
     bit_field_ = HasTransitionField::update(bit_field_, true);
     SetChangesFlag(kMaps);
   }
 
-  void MarkReceiverAsCell() {
-    bit_field_ = ReceiverIsCellField::update(bit_field_, true);
-  }
-
-  bool receiver_is_cell() const {
-    return ReceiverIsCellField::decode(bit_field_);
-  }
-
   bool NeedsWriteBarrier() const {
     DCHECK(!field_representation().IsDouble() ||
            (FLAG_unbox_double_fields && access_.IsInobject()) ||
            !has_transition());
     if (field_representation().IsDouble()) return false;
     if (field_representation().IsSmi()) return false;
     if (field_representation().IsInteger32()) return false;
     if (field_representation().IsExternal()) return false;
-    if (receiver_is_cell()) return false;
     return StoringValueNeedsWriteBarrier(value()) &&
         ReceiverObjectNeedsWriteBarrier(object(), value(), dominator());
   }
 
   bool NeedsWriteBarrierForMap() {
     return ReceiverObjectNeedsWriteBarrier(object(), transition(),
                                            dominator());
   }
 
   SmiCheck SmiCheckForWriteBarrier() const {
@@ skipping 39 matching lines @@
     DCHECK(!access.IsInobject() || access.existing_inobject_property() ||
            obj->IsAllocate() || obj->IsInnerAllocatedObject());
     SetOperandAt(0, obj);
     SetOperandAt(1, val);
     SetOperandAt(2, obj);
     access.SetGVNFlags(this, STORE);
   }
 
   class HasTransitionField : public BitField<bool, 0, 1> {};
   class StoreModeField : public BitField<StoreFieldOrKeyedMode, 1, 1> {};
-  class ReceiverIsCellField : public BitField<bool, 2, 1> {};
 
   HObjectAccess access_;
   HValue* dominator_;
   uint32_t bit_field_;
 };
 
 
 class HStoreNamedGeneric FINAL : public HTemplateInstruction<3> {
  public:
   DECLARE_INSTRUCTION_WITH_CONTEXT_FACTORY_P5(HStoreNamedGeneric, HValue*,
@@ skipping 955 matching lines @@
 };
 
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_