Add OptimizedCodeEntry as a new heap object type. An optimized code entry represents an association…

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 3e4601a65e1176eeea207dd77e54590c9df40190..20df0b92166d053063432324ba8f616cd4868c6d 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -1786,6 +1786,10 @@ void HeapObject::IterateBody(InstanceType type, int object_size,
       SharedFunctionInfo::BodyDescriptor::IterateBody(this, v);
       break;
     }
+    case OPTIMIZED_CODE_ENTRY_TYPE: {
+      OptimizedCodeEntry::BodyDescriptor::IterateBody(this, v);
+      break;
+    }
 
 #define MAKE_STRUCT_CASE(NAME, Name, name) \
         case NAME##_TYPE:
@@ -9471,6 +9475,15 @@ void SharedFunctionInfo::TrimOptimizedCodeMap(int shrink_by) {
 }
 
 
+void OptimizedCodeEntry::Kill() {
+  set_function(NULL, SKIP_WRITE_BARRIER);
+  set_code(NULL, SKIP_WRITE_BARRIER);
+  set_native_context(NULL, SKIP_WRITE_BARRIER);
+  set_literals(NULL, SKIP_WRITE_BARRIER);
+  set_cacheable(false);
+}
+
+
 bool JSFunction::CompileLazy(Handle<JSFunction> function,
                              ClearExceptionFlag flag) {
   bool result = true;