Introduce TypeFeedbackVector, as FixedArray grew constrictive.

src/full-codegen.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/v8.h"
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/compiler.h"
 #include "src/debug.h"
@@ skipping 1554 matching lines @@
 
   // Instantiate the function and create a shared function info from it.
   Handle<JSFunction> fun = Utils::OpenHandle(*fun_template->GetFunction());
   const int literals = fun->NumberOfLiterals();
   Handle<Code> code = Handle<Code>(fun->shared()->code());
   Handle<Code> construct_stub = Handle<Code>(fun->shared()->construct_stub());
   Handle<SharedFunctionInfo> shared =
       isolate()->factory()->NewSharedFunctionInfo(
           name, literals, FunctionKind::kNormalFunction, code,
           Handle<ScopeInfo>(fun->shared()->scope_info()),
-          Handle<FixedArray>(fun->shared()->feedback_vector()));
+          Handle<TypeFeedbackVector>(fun->shared()->feedback_vector()));
   shared->set_construct_stub(*construct_stub);
 
   // Copy the function data to the shared function info.
   shared->set_function_data(fun->shared()->function_data());
   int parameters = fun->shared()->formal_parameter_count();
   shared->set_formal_parameter_count(parameters);
 
   EmitNewClosure(shared, false);
 }
 
@@ skipping 125 matching lines @@
   }
   return true;
 }
 #endif  // DEBUG
 
 
 #undef __
 
 
 } }  // namespace v8::internal