WIP: type profiling.

src/feedback-vector.cc

Index: src/feedback-vector.cc
diff --git a/src/feedback-vector.cc b/src/feedback-vector.cc
index 670942a0c32b7dae0f56aa30106d05c4e8b7bc2d..c1539d8da19eb41accc9b08e2536d94c16aeadcd 100644
--- a/src/feedback-vector.cc
+++ b/src/feedback-vector.cc
@@ -147,6 +147,8 @@ const char* FeedbackMetadata::Kind2String(FeedbackSlotKind kind) {
       return "kCreateClosure";
     case FeedbackSlotKind::kLiteral:
       return "LITERAL";
+    case FeedbackSlotKind::kTypeProfile:
+      return "TYPE_PROFILE";
     case FeedbackSlotKind::kGeneral:
       return "STUB";
     case FeedbackSlotKind::kKindsNumber:
@@ -216,6 +218,7 @@ Handle<FeedbackVector> FeedbackVector::New(Isolate* isolate,
       case FeedbackSlotKind::kStoreKeyedStrict:
       case FeedbackSlotKind::kStoreDataPropertyInLiteral:
       case FeedbackSlotKind::kGeneral:
+      case FeedbackSlotKind::kTypeProfile:
         array->set(index, *uninitialized_sentinel, SKIP_WRITE_BARRIER);
         break;
 
@@ -332,7 +335,8 @@ void FeedbackVector::ClearSlots(JSFunction* host_function) {
           break;
         }
         case FeedbackSlotKind::kCreateClosure: {
-          break;
+          case FeedbackSlotKind::kTypeProfile:
+            break;
         }
         case FeedbackSlotKind::kGeneral: {
           if (obj->IsHeapObject()) {