[TypeFeedbackVector] Combine the literals array and the feedback vector.

src/ast/ast-literal-reindexer.h

-// Copyright 2015 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_AST_AST_LITERAL_REINDEXER
-#define V8_AST_AST_LITERAL_REINDEXER
-
-#include "src/ast/ast.h"
-#include "src/ast/scopes.h"
-
-namespace v8 {
-namespace internal {
-
-class AstLiteralReindexer final : public AstVisitor<AstLiteralReindexer> {
- public:
-  AstLiteralReindexer() : next_index_(0) {}
-
-  int count() const { return next_index_; }
-  void Reindex(Expression* pattern);
-
- private:
-#define DEFINE_VISIT(type) void Visit##type(type* node);
-  AST_NODE_LIST(DEFINE_VISIT)
-#undef DEFINE_VISIT
-
-  void VisitStatements(ZoneList<Statement*>* statements);
-  void VisitDeclarations(ZoneList<Declaration*>* declarations);
-  void VisitArguments(ZoneList<Expression*>* arguments);
-  void VisitLiteralProperty(LiteralProperty* property);
-
-  void UpdateIndex(MaterializedLiteral* literal) {
-    literal->literal_index_ = next_index_++;
-  }
-
-  int next_index_;
-
-  DEFINE_AST_VISITOR_MEMBERS_WITHOUT_STACKOVERFLOW()
-  DISALLOW_COPY_AND_ASSIGN(AstLiteralReindexer);
-};
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_AST_AST_LITERAL_REINDEXER