Type Feedback Vector lives in the closure

src/compiler.h

 // 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.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 258 matching lines @@
   bool is_first_compile() const { return GetFlag(kFirstCompile); }
 
   bool GeneratePreagedPrologue() const {
     // Generate a pre-aged prologue if we are optimizing for size, which
     // will make code flushing more aggressive. The code for WASM functions
     // cannot be flushed, so it does not make sense to age them.
     return FLAG_optimize_for_size && FLAG_age_code && !will_serialize() &&
            !is_debug() && output_code_kind_ != Code::WASM_FUNCTION;
   }
 
-  void EnsureFeedbackVector();
-  Handle<TypeFeedbackVector> feedback_vector() const {
-    return feedback_vector_;
+  void EnsureFeedbackMetadata();
+  Handle<TypeFeedbackMetadata> feedback_metadata() const {
+    return feedback_metadata_;
   }
   void SetCode(Handle<Code> code) { code_ = code; }
 
   void SetBytecodeArray(Handle<BytecodeArray> bytecode_array) {
     bytecode_array_ = bytecode_array;
   }
 
   bool ShouldTrapOnDeopt() const {
     return (FLAG_trap_on_deopt && IsOptimizing()) ||
         (FLAG_trap_on_stub_deopt && IsStub());
@@ skipping 175 matching lines @@
   unsigned flags_;
 
   Code::Kind output_code_kind_;
 
   // For compiled stubs, the stub object
   CodeStub* code_stub_;
   // The compiled code.
   Handle<Code> code_;
 
   // Used by codegen, ultimately kept rooted by the SharedFunctionInfo.
-  Handle<TypeFeedbackVector> feedback_vector_;
+  Handle<TypeFeedbackMetadata> feedback_metadata_;
 
   // Compilation mode flag and whether deoptimization is allowed.
   Mode mode_;
   BailoutId osr_ast_id_;
   // The unoptimized code we patched for OSR may not be the shared code
   // afterwards, since we may need to compile it again to include deoptimization
   // data.  Keep track which code we patched.
   Handle<Code> unoptimized_code_;
 
   // Holds the bytecode array generated by the interpreter.
@@ skipping 231 matching lines @@
   size_t info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_H_