Introduce raw accessors for type_feedback_info.

This pure refactoring is needed for another upcoming CL.

Note that the actual names are still a bit confusing, because this is
still a kind of swiss-army-knife-field. :-/

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/52633003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17472 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.cc

@@ -4194,7 +4194,7 @@ MaybeObject* Heap::CreateCode(const CodeDesc& desc,
   }
   code->set_is_crankshafted(crankshafted);
   code->set_deoptimization_data(empty_fixed_array(), SKIP_WRITE_BARRIER);
-  code->InitializeTypeFeedbackInfoNoWriteBarrier(undefined_value());
+  code->set_raw_type_feedback_info(undefined_value());
   code->set_handler_table(empty_fixed_array(), SKIP_WRITE_BARRIER);
   code->set_gc_metadata(Smi::FromInt(0));
   code->set_ic_age(global_ic_age_);

src/objects-inl.h

@@ -5320,23 +5320,18 @@ INT_ACCESSORS(Code, prologue_offset, kPrologueOffset)
 ACCESSORS(Code, relocation_info, ByteArray, kRelocationInfoOffset)
 ACCESSORS(Code, handler_table, FixedArray, kHandlerTableOffset)
 ACCESSORS(Code, deoptimization_data, FixedArray, kDeoptimizationDataOffset)
-
-
-// Type feedback slot: type_feedback_info for FUNCTIONs, stub_info for STUBs.
-void Code::InitializeTypeFeedbackInfoNoWriteBarrier(Object* value) {
-  WRITE_FIELD(this, kTypeFeedbackInfoOffset, value);
-}
+ACCESSORS(Code, raw_type_feedback_info, Object, kTypeFeedbackInfoOffset)
 
 
 Object* Code::type_feedback_info() {
   ASSERT(kind() == FUNCTION);
-  return Object::cast(READ_FIELD(this, kTypeFeedbackInfoOffset));
+  return raw_type_feedback_info();
 }
 
 
 void Code::set_type_feedback_info(Object* value, WriteBarrierMode mode) {
   ASSERT(kind() == FUNCTION);
-  WRITE_FIELD(this, kTypeFeedbackInfoOffset, value);
+  set_raw_type_feedback_info(value, mode);
   CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kTypeFeedbackInfoOffset,
                             value, mode);
 }
@@ -5344,13 +5339,13 @@ void Code::set_type_feedback_info(Object* value, WriteBarrierMode mode) {
 
 Object* Code::next_code_link() {
   CHECK(kind() == OPTIMIZED_FUNCTION);
-  return Object::cast(READ_FIELD(this, kTypeFeedbackInfoOffset));
+  return raw_type_feedback_info();
 }
 
 
 void Code::set_next_code_link(Object* value, WriteBarrierMode mode) {
   CHECK(kind() == OPTIMIZED_FUNCTION);
-  WRITE_FIELD(this, kTypeFeedbackInfoOffset, value);
+  set_raw_type_feedback_info(value);
   CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kTypeFeedbackInfoOffset,
                             value, mode);
 }
@@ -5359,8 +5354,7 @@ void Code::set_next_code_link(Object* value, WriteBarrierMode mode) {
 int Code::stub_info() {
   ASSERT(kind() == COMPARE_IC || kind() == COMPARE_NIL_IC ||
          kind() == BINARY_OP_IC || kind() == LOAD_IC);
-  Object* value = READ_FIELD(this, kTypeFeedbackInfoOffset);
-  return Smi::cast(value)->value();
+  return Smi::cast(raw_type_feedback_info())->value();
 }
 
 
@@ -5373,7 +5367,7 @@ void Code::set_stub_info(int value) {
          kind() == KEYED_LOAD_IC ||
          kind() == STORE_IC ||
          kind() == KEYED_STORE_IC);
-  WRITE_FIELD(this, kTypeFeedbackInfoOffset, Smi::FromInt(value));
+  set_raw_type_feedback_info(Smi::FromInt(value));
 }
 
 

src/objects.h

@@ -5015,13 +5015,15 @@ class Code: public HeapObject {
   // [deoptimization_data]: Array containing data for deopt.
   DECL_ACCESSORS(deoptimization_data, FixedArray)
 
-  // [type_feedback_info]: This field stores various things, depending on the
-  // kind of the code object.
+  // [raw_type_feedback_info]: This field stores various things, depending on
+  // the kind of the code object.
   //   FUNCTION           => type feedback information.
   //   STUB               => various things, e.g. a SMI
   //   OPTIMIZED_FUNCTION => the next_code_link for optimized code list.
-  DECL_ACCESSORS(type_feedback_info, Object)
-  inline void InitializeTypeFeedbackInfoNoWriteBarrier(Object* value);
+  DECL_ACCESSORS(raw_type_feedback_info, Object)
+  inline Object* type_feedback_info();
+  inline void set_type_feedback_info(
+      Object* value, WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
   inline int stub_info();
   inline void set_stub_info(int info);