[TypeFeedbackVector] Remove unnecessary Parameters metadata

src/ast/ast.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_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/ast/ast-types.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 2585 matching lines @@
   bool is_named_expression() const {
     return function_type() == kNamedExpression;
   }
   bool is_anonymous_expression() const {
     return function_type() == kAnonymousExpression;
   }
   LanguageMode language_mode() const;
 
   void AssignFeedbackVectorSlots(FeedbackVectorSpec* spec,
                                  FeedbackVectorSlotCache* cache) {
-    // The + 1 is because we need an array with room for the literals
-    // as well as the feedback vector.
-    literal_feedback_slot_ =
-        spec->AddCreateClosureSlot(materialized_literal_count_ + 1);
+    literal_feedback_slot_ = spec->AddCreateClosureSlot();
   }
 
   FeedbackVectorSlot LiteralFeedbackSlot() const {
     return literal_feedback_slot_;
   }
 
   static bool NeedsHomeObject(Expression* expr);
 
   int materialized_literal_count() { return materialized_literal_count_; }
   int expected_property_count() { return expected_property_count_; }
@@ skipping 246 matching lines @@
 class NativeFunctionLiteral final : public Expression {
  public:
   Handle<String> name() const { return name_->string(); }
   v8::Extension* extension() const { return extension_; }
   FeedbackVectorSlot LiteralFeedbackSlot() const {
     return literal_feedback_slot_;
   }
 
   void AssignFeedbackVectorSlots(FeedbackVectorSpec* spec,
                                  FeedbackVectorSlotCache* cache) {
-    // 0 is a magic number here. It means we are holding the literals
-    // array for a native function literal, which needs to be
-    // the empty literals array.
     // TODO(mvstanton): The FeedbackVectorSlotCache can be adapted
     // to always return the same slot for this case.
-    literal_feedback_slot_ = spec->AddCreateClosureSlot(0);
+    literal_feedback_slot_ = spec->AddCreateClosureSlot();
   }
 
  private:
   friend class AstNodeFactory;
 
   NativeFunctionLiteral(const AstRawString* name, v8::Extension* extension,
                         int pos)
       : Expression(pos, kNativeFunctionLiteral),
         name_(name),
         extension_(extension) {}
@@ skipping 760 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_