Remove unnecessary TypeFeedbackIds, saves memory and simplifies TurboFan.

src/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_H_
 #define V8_AST_H_
 
 #include "src/v8.h"
 
 #include "src/assembler.h"
@@ skipping 1645 matching lines @@
 
 class Property final : public Expression {
  public:
   DECLARE_NODE_TYPE(Property)
 
   bool IsValidReferenceExpression() const override { return true; }
 
   Expression* obj() const { return obj_; }
   Expression* key() const { return key_; }
 
-  static int num_ids() { return parent_num_ids() + 2; }
+  static int num_ids() { return parent_num_ids() + 1; }
   BailoutId LoadId() const { return BailoutId(local_id(0)); }
-  TypeFeedbackId PropertyFeedbackId() { return TypeFeedbackId(local_id(1)); }
 
   bool IsStringAccess() const {
     return IsStringAccessField::decode(bit_field_);
   }
 
   // Type feedback information.
   bool IsMonomorphic() override { return receiver_types_.length() == 1; }
   SmallMapList* GetReceiverTypes() override { return &receiver_types_; }
   KeyedAccessStoreMode GetStoreMode() const override { return STANDARD_STORE; }
   IcCheckType GetKeyType() const override {
@@ skipping 286 matching lines @@
     callruntime_feedback_slot_ = slot;
   }
   Code::Kind FeedbackICSlotKind(int index) override { return Code::LOAD_IC; }
 
   FeedbackVectorICSlot CallRuntimeFeedbackSlot() {
     DCHECK(!HasCallRuntimeFeedbackSlot() ||
            !callruntime_feedback_slot_.IsInvalid());
     return callruntime_feedback_slot_;
   }
 
-  static int num_ids() { return parent_num_ids() + 1; }
-  TypeFeedbackId CallRuntimeFeedbackId() const {
-    return TypeFeedbackId(local_id(0));
-  }
+  static int num_ids() { return parent_num_ids(); }
 
  protected:
   CallRuntime(Zone* zone, const AstRawString* name,
               const Runtime::Function* function,
               ZoneList<Expression*>* arguments, int pos)
       : Expression(zone, pos),
         raw_name_(name),
         function_(function),
         arguments_(arguments),
         callruntime_feedback_slot_(FeedbackVectorICSlot::Invalid()) {}
   static int parent_num_ids() { return Expression::num_ids(); }
 
  private:
-  int local_id(int n) const { return base_id() + parent_num_ids() + n; }
-
   const AstRawString* raw_name_;
   const Runtime::Function* function_;
   ZoneList<Expression*>* arguments_;
   FeedbackVectorICSlot callruntime_feedback_slot_;
 };
 
 
 class UnaryOperation final : public Expression {
  public:
   DECLARE_NODE_TYPE(UnaryOperation)
@@ skipping 686 matching lines @@
   ThisFunction(Zone* zone, int pos) : Expression(zone, pos) {}
 };
 
 
 class SuperReference final : public Expression {
  public:
   DECLARE_NODE_TYPE(SuperReference)
 
   VariableProxy* this_var() const { return this_var_; }
 
-  static int num_ids() { return parent_num_ids() + 1; }
-  TypeFeedbackId HomeObjectFeedbackId() { return TypeFeedbackId(local_id(0)); }
+  static int num_ids() { return parent_num_ids(); }
 
   // Type feedback information.
   virtual FeedbackVectorRequirements ComputeFeedbackRequirements(
       Isolate* isolate, const ICSlotCache* cache) override {
     return FeedbackVectorRequirements(0, 1);
   }
   void SetFirstFeedbackICSlot(FeedbackVectorICSlot slot,
                               ICSlotCache* cache) override {
     homeobject_feedback_slot_ = slot;
   }
   Code::Kind FeedbackICSlotKind(int index) override { return Code::LOAD_IC; }
 
   FeedbackVectorICSlot HomeObjectFeedbackSlot() {
     DCHECK(!homeobject_feedback_slot_.IsInvalid());
     return homeobject_feedback_slot_;
   }
 
  protected:
   SuperReference(Zone* zone, VariableProxy* this_var, int pos)
       : Expression(zone, pos),
         this_var_(this_var),
         homeobject_feedback_slot_(FeedbackVectorICSlot::Invalid()) {
     DCHECK(this_var->is_this());
   }
   static int parent_num_ids() { return Expression::num_ids(); }
 
  private:
-  int local_id(int n) const { return base_id() + parent_num_ids() + n; }
-
   VariableProxy* this_var_;
   FeedbackVectorICSlot homeobject_feedback_slot_;
 };
 
 
 #undef DECLARE_NODE_TYPE
 
 
 // ----------------------------------------------------------------------------
 // Regular expressions
@@ skipping 765 matching lines @@
 
  private:
   Zone* zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_