Add OptimizedCodeList and DeoptimizedCodeList to native contexts. Both lists are weak. This makes i…

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 77b4e3816cd064e3004cedf13f244580c912a5b6..f3d4d1c4450d841b8428d73d32d173ba6bbf92a3 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -5052,6 +5052,7 @@ void JSFunction::ReplaceCode(Code* code) {
     context()->native_context()->AddOptimizedFunction(this);
   }
   if (was_optimized && !is_optimized) {
+    // TODO(titzer): linear in the number of optimized functions; fix!
     context()->native_context()->RemoveOptimizedFunction(this);
   }
 }
@@ -5314,6 +5315,20 @@ 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));
+}
+
+
+void Code::set_next_code_link(Object* value, WriteBarrierMode mode) {
+  CHECK(kind() == OPTIMIZED_FUNCTION);
+  WRITE_FIELD(this, kTypeFeedbackInfoOffset, value);
+  CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kTypeFeedbackInfoOffset,
+                            value, mode);
+}
+
+
 int Code::stub_info() {
   ASSERT(kind() == COMPARE_IC || kind() == COMPARE_NIL_IC ||
          kind() == BINARY_OP_IC || kind() == LOAD_IC);
@@ -5335,25 +5350,6 @@ void Code::set_stub_info(int value) {
 }
 
 
-Object* Code::code_to_deoptimize_link() {
-  // Optimized code should not have type feedback.
-  ASSERT(kind() == OPTIMIZED_FUNCTION);
-  return READ_FIELD(this, kTypeFeedbackInfoOffset);
-}
-
-
-void Code::set_code_to_deoptimize_link(Object* value) {
-  ASSERT(kind() == OPTIMIZED_FUNCTION);
-  WRITE_FIELD(this, kTypeFeedbackInfoOffset, value);
-}
-
-
-Object** Code::code_to_deoptimize_link_slot() {
-  ASSERT(kind() == OPTIMIZED_FUNCTION);
-  return HeapObject::RawField(this, kTypeFeedbackInfoOffset);
-}
-
-
 ACCESSORS(Code, gc_metadata, Object, kGCMetadataOffset)
 INT_ACCESSORS(Code, ic_age, kICAgeOffset)