Collect type feedback for power-of-2 right operands in BinaryOps.

src/ast.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1781 matching lines @@
   Expression* right() const { return right_; }
   virtual int position() const { return pos_; }
 
   BailoutId RightId() const { return right_id_; }
 
   TypeFeedbackId BinaryOperationFeedbackId() const { return reuse(id()); }
   void RecordTypeFeedback(TypeFeedbackOracle* oracle);
   TypeInfo left_type() const { return left_type_; }
   TypeInfo right_type() const { return right_type_; }
   TypeInfo result_type() const { return result_type_; }
+  bool has_fixed_right_arg() const { return has_fixed_right_arg_; }
+  int fixed_right_arg_value() const { return fixed_right_arg_value_; }
 
  protected:
   BinaryOperation(Isolate* isolate,
                   Token::Value op,
                   Expression* left,
                   Expression* right,
                   int pos)
       : Expression(isolate),
         op_(op),
         left_(left),
         right_(right),
         pos_(pos),
         right_id_(GetNextId(isolate)) {
     ASSERT(Token::IsBinaryOp(op));
   }
 
  private:
   Token::Value op_;
   Expression* left_;
   Expression* right_;
   int pos_;
 
   TypeInfo left_type_;
   TypeInfo right_type_;
   TypeInfo result_type_;
+  bool has_fixed_right_arg_;
+  int fixed_right_arg_value_;
 
   // The short-circuit logical operations need an AST ID for their
   // right-hand subexpression.
   const BailoutId right_id_;
 };
 
 
 class CountOperation: public Expression {
  public:
   DECLARE_NODE_TYPE(CountOperation)
@@ skipping 1294 matching lines @@
  private:
   Isolate* isolate_;
   Zone* zone_;
   Visitor visitor_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_