Allow the deoptimizer translation to track de-materialized objects.

src/deoptimizer.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 57 matching lines @@
 
   Address slot_address() const { return slot_address_; }
   double value() const { return val_; }
 
  private:
   Address slot_address_;
   double val_;
 };
 
 
-class ArgumentsObjectMaterializationDescriptor BASE_EMBEDDED {
+class ObjectMaterializationDescriptor BASE_EMBEDDED {
  public:
-  ArgumentsObjectMaterializationDescriptor(Address slot_address, int argc)
-      : slot_address_(slot_address), arguments_length_(argc) { }
+  ObjectMaterializationDescriptor(Address slot_address, int length)
+      : slot_address_(slot_address), object_length_(length) { }
 
   Address slot_address() const { return slot_address_; }
-  int arguments_length() const { return arguments_length_; }
+  int object_length() const { return object_length_; }
 
  private:
   Address slot_address_;
-  int arguments_length_;
+  int object_length_;
 };
 
 
 class OptimizedFunctionVisitor BASE_EMBEDDED {
  public:
   virtual ~OptimizedFunctionVisitor() {}
 
   // Function which is called before iteration of any optimized functions
   // from given native context.
   virtual void EnterContext(Context* context) = 0;
@@ skipping 263 matching lines @@
   void DoComputeArgumentsAdaptorFrame(TranslationIterator* iterator,
                                       int frame_index);
   void DoComputeConstructStubFrame(TranslationIterator* iterator,
                                    int frame_index);
   void DoComputeAccessorStubFrame(TranslationIterator* iterator,
                                   int frame_index,
                                   bool is_setter_stub_frame);
   void DoComputeCompiledStubFrame(TranslationIterator* iterator,
                                   int frame_index);
 
+  void DoTranslateObject(TranslationIterator* iterator,
+                         int object_opcode,
+                         int field_index);
+
   enum DeoptimizerTranslatedValueType {
     TRANSLATED_VALUE_IS_NATIVE,
     TRANSLATED_VALUE_IS_TAGGED
   };
 
   void DoTranslateCommand(TranslationIterator* iterator,
       int frame_index,
       unsigned output_offset,
       DeoptimizerTranslatedValueType value_type = TRANSLATED_VALUE_IS_TAGGED);
 
   // Translate a command for OSR.  Updates the input offset to be used for
   // the next command.  Returns false if translation of the command failed
   // (e.g., a number conversion failed) and may or may not have updated the
   // input offset.
   bool DoOsrTranslateCommand(TranslationIterator* iterator,
                              int* input_offset);
 
   unsigned ComputeInputFrameSize() const;
   unsigned ComputeFixedSize(JSFunction* function) const;
 
   unsigned ComputeIncomingArgumentSize(JSFunction* function) const;
   unsigned ComputeOutgoingArgumentSize() const;
 
   Object* ComputeLiteral(int index) const;
 
-  void AddArgumentsObject(intptr_t slot_address, int argc);
-  void AddArgumentsObjectValue(intptr_t value);
+  void AddObjectStart(intptr_t slot_address, int argc);
+  void AddObjectTaggedValue(intptr_t value);
+  void AddObjectDoubleValue(double value);
   void AddDoubleValue(intptr_t slot_address, double value);
 
   static void GenerateDeoptimizationEntries(
       MacroAssembler* masm, int count, BailoutType type);
 
   // Weak handle callback for deoptimizing code objects.
   static void HandleWeakDeoptimizedCode(v8::Isolate* isolate,
                                         v8::Persistent<v8::Value>* obj,
                                         void* data);
 
@@ skipping 30 matching lines @@
 
   // Input frame description.
   FrameDescription* input_;
   // Number of output frames.
   int output_count_;
   // Number of output js frames.
   int jsframe_count_;
   // Array of output frame descriptions.
   FrameDescription** output_;
 
-  List<Object*> deferred_arguments_objects_values_;
-  List<ArgumentsObjectMaterializationDescriptor> deferred_arguments_objects_;
+  List<Object*> deferred_objects_tagged_values_;
+  List<double> deferred_objects_double_values_;
+  List<ObjectMaterializationDescriptor> deferred_objects_;
   List<HeapNumberMaterializationDescriptor> deferred_heap_numbers_;
 #ifdef DEBUG
   DisallowHeapAllocation* disallow_heap_allocation_;
 #endif  // DEBUG
 
   bool trace_;
 
   static const int table_entry_size_;
 
   friend class FrameDescription;
@@ skipping 230 matching lines @@
 class Translation BASE_EMBEDDED {
  public:
   enum Opcode {
     BEGIN,
     JS_FRAME,
     CONSTRUCT_STUB_FRAME,
     GETTER_STUB_FRAME,
     SETTER_STUB_FRAME,
     ARGUMENTS_ADAPTOR_FRAME,
     COMPILED_STUB_FRAME,
+    ARGUMENTS_OBJECT,
     REGISTER,
     INT32_REGISTER,
     UINT32_REGISTER,
     DOUBLE_REGISTER,
     STACK_SLOT,
     INT32_STACK_SLOT,
     UINT32_STACK_SLOT,
     DOUBLE_STACK_SLOT,
     LITERAL,
-    ARGUMENTS_OBJECT,
 
     // A prefix indicating that the next command is a duplicate of the one
     // that follows it.
     DUPLICATE
   };
 
   Translation(TranslationBuffer* buffer, int frame_count, int jsframe_count,
               Zone* zone)
       : buffer_(buffer),
         index_(buffer->CurrentIndex()),
         zone_(zone) {
     buffer_->Add(BEGIN, zone);
     buffer_->Add(frame_count, zone);
     buffer_->Add(jsframe_count, zone);
   }
 
   int index() const { return index_; }
 
   // Commands.
   void BeginJSFrame(BailoutId node_id, int literal_id, unsigned height);
   void BeginCompiledStubFrame();
   void BeginArgumentsAdaptorFrame(int literal_id, unsigned height);
   void BeginConstructStubFrame(int literal_id, unsigned height);
   void BeginGetterStubFrame(int literal_id);
   void BeginSetterStubFrame(int literal_id);
+  void BeginArgumentsObject(int args_length);
   void StoreRegister(Register reg);
   void StoreInt32Register(Register reg);
   void StoreUint32Register(Register reg);
   void StoreDoubleRegister(DoubleRegister reg);
   void StoreStackSlot(int index);
   void StoreInt32StackSlot(int index);
   void StoreUint32StackSlot(int index);
   void StoreDoubleStackSlot(int index);
   void StoreLiteral(int literal_id);
-  void StoreArgumentsObject(bool args_known, int args_index, int args_length);
   void MarkDuplicate();
 
   Zone* zone() const { return zone_; }
 
   static int NumberOfOperandsFor(Opcode opcode);
 
 #if defined(OBJECT_PRINT) || defined(ENABLE_DISASSEMBLER)
   static const char* StringFor(Opcode opcode);
 #endif
 
@@ skipping 188 matching lines @@
   Object** expression_stack_;
   int source_position_;
 
   friend class Deoptimizer;
 };
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEOPTIMIZER_H_