[compiler] Remove the special case "prototype" load in class literals.

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/assembler.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 2817 matching lines @@
   FunctionLiteral* constructor() const { return constructor_; }
   void set_constructor(FunctionLiteral* f) { constructor_ = f; }
   ZoneList<Property*>* properties() const { return properties_; }
   int start_position() const { return position(); }
   int end_position() const { return end_position_; }
 
   BailoutId EntryId() const { return BailoutId(local_id(0)); }
   BailoutId DeclsId() const { return BailoutId(local_id(1)); }
   BailoutId ExitId() { return BailoutId(local_id(2)); }
   BailoutId CreateLiteralId() const { return BailoutId(local_id(3)); }
+  BailoutId PrototypeId() { return BailoutId(local_id(4)); }
 
   // Return an AST id for a property that is used in simulate instructions.
-  BailoutId GetIdForProperty(int i) { return BailoutId(local_id(i + 4)); }
+  BailoutId GetIdForProperty(int i) { return BailoutId(local_id(i + 5)); }
 
   // Unlike other AST nodes, this number of bailout IDs allocated for an
   // ClassLiteral can vary, so num_ids() is not a static method.
-  int num_ids() const { return parent_num_ids() + 4 + properties()->length(); }
+  int num_ids() const { return parent_num_ids() + 5 + properties()->length(); }
 
   // Object literals need one feedback slot for each non-trivial value, as well
   // as some slots for home objects.
   void AssignFeedbackVectorSlots(Isolate* isolate, FeedbackVectorSpec* spec,
                                  FeedbackVectorSlotCache* cache) override;
 
   bool NeedsProxySlot() const {
     return class_variable_proxy() != nullptr &&
            class_variable_proxy()->var()->IsUnallocated();
   }
 
-  FeedbackVectorSlot ProxySlot() const { return slot_; }
+  FeedbackVectorSlot PrototypeSlot() const { return prototype_slot_; }
+  FeedbackVectorSlot ProxySlot() const { return proxy_slot_; }
 
   bool IsAnonymousFunctionDefinition() const final {
     return constructor()->raw_name()->length() == 0;
   }
 
  protected:
   ClassLiteral(Zone* zone, Scope* scope, VariableProxy* class_variable_proxy,
                Expression* extends, FunctionLiteral* constructor,
                ZoneList<Property*>* properties, int start_position,
                int end_position)
       : Expression(zone, start_position),
         scope_(scope),
         class_variable_proxy_(class_variable_proxy),
         extends_(extends),
         constructor_(constructor),
         properties_(properties),
         end_position_(end_position) {}
 
   static int parent_num_ids() { return Expression::num_ids(); }
 
  private:
   int local_id(int n) const { return base_id() + parent_num_ids() + n; }
 
   Scope* scope_;
   VariableProxy* class_variable_proxy_;
   Expression* extends_;
   FunctionLiteral* constructor_;
   ZoneList<Property*>* properties_;
   int end_position_;
-  FeedbackVectorSlot slot_;
+  FeedbackVectorSlot prototype_slot_;
+  FeedbackVectorSlot proxy_slot_;
 };
 
 
 class NativeFunctionLiteral final : public Expression {
  public:
   DECLARE_NODE_TYPE(NativeFunctionLiteral)
 
   Handle<String> name() const { return name_->string(); }
   v8::Extension* extension() const { return extension_; }
 
@@ skipping 649 matching lines @@
   // the parser-level zone.
   Zone* parser_zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_