The metadata part of TypeFeedbackVector is extracted to TypeFeedbackMetadata array.

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler.h"
 
 #include <algorithm>
 
 #include "src/ast-numbering.h"
 #include "src/bootstrapper.h"
@@ skipping 227 matching lines @@
   return FLAG_crankshaft &&
          !(literal()->flags() & AstProperties::kDontSelfOptimize) &&
          !literal()->dont_optimize() &&
          literal()->scope()->AllowsLazyCompilation() &&
          (!has_shared_info() || !shared_info()->optimization_disabled());
 }
 
 
 void CompilationInfo::EnsureFeedbackVector() {
   if (feedback_vector_.is_null()) {
-    feedback_vector_ =
-        TypeFeedbackVector::New(isolate(), literal()->feedback_vector_spec());
+    Handle<TypeFeedbackMetadata> feedback_metadata =
+        TypeFeedbackMetadata::New(isolate(), literal()->feedback_vector_spec());
+    feedback_vector_ = TypeFeedbackVector::New(isolate(), feedback_metadata);
   }
 
   // It's very important that recompiles do not alter the structure of the
   // type feedback vector.
-  CHECK(!feedback_vector_->SpecDiffersFrom(literal()->feedback_vector_spec()));
+  CHECK(!feedback_vector_->metadata()->SpecDiffersFrom(
+      literal()->feedback_vector_spec()));
 }
 
 
 bool CompilationInfo::has_simple_parameters() {
   return scope()->has_simple_parameters();
 }
 
 
 int CompilationInfo::TraceInlinedFunction(Handle<SharedFunctionInfo> shared,
                                           SourcePosition position,
@@ skipping 1492 matching lines @@
 }
 
 #if DEBUG
 void CompilationInfo::PrintAstForTesting() {
   PrintF("--- Source from AST ---\n%s\n",
          PrettyPrinter(isolate(), zone()).PrintProgram(literal()));
 }
 #endif
 }  // namespace internal
 }  // namespace v8