-Inlined double variant of compare iff one of the sides is a constant smi and...

src/ast.h

 // Copyright 2006-2008 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 121 matching lines @@
   virtual TargetCollector* AsTargetCollector() { return NULL; }
   virtual BreakableStatement* AsBreakableStatement() { return NULL; }
   virtual IterationStatement* AsIterationStatement() { return NULL; }
   virtual UnaryOperation* AsUnaryOperation() { return NULL; }
   virtual BinaryOperation* AsBinaryOperation() { return NULL; }
   virtual Assignment* AsAssignment() { return NULL; }
   virtual FunctionLiteral* AsFunctionLiteral() { return NULL; }
   virtual MaterializedLiteral* AsMaterializedLiteral() { return NULL; }
   virtual ObjectLiteral* AsObjectLiteral() { return NULL; }
   virtual ArrayLiteral* AsArrayLiteral() { return NULL; }
+  virtual CompareOperation* AsCompareOperation() { return NULL; }
 };
 
 
 class Statement: public AstNode {
  public:
   Statement() : statement_pos_(RelocInfo::kNoPosition) {}
 
   virtual Statement* AsStatement()  { return this; }
   virtual ReturnStatement* AsReturnStatement() { return NULL; }
 
@@ skipping 1026 matching lines @@
  private:
   bool is_prefix_;
   Token::Value op_;
   Expression* expression_;
 };
 
 
 class CompareOperation: public Expression {
  public:
   CompareOperation(Token::Value op, Expression* left, Expression* right)
-      : op_(op), left_(left), right_(right) {
+      : op_(op), left_(left), right_(right), is_for_loop_condition_(false) {
     ASSERT(Token::IsCompareOp(op));
   }
 
   virtual void Accept(AstVisitor* v);
 
   Token::Value op() const { return op_; }
   Expression* left() const { return left_; }
   Expression* right() const { return right_; }
 
+  // Accessors for flag whether this compare operation is hanging of a for loop.
+  bool is_for_loop_condition() const { return is_for_loop_condition_; }
+  void set_is_for_loop_condition() { is_for_loop_condition_ = true; }
+
+  // Type testing & conversion
+  virtual CompareOperation* AsCompareOperation() { return this; }
+
  private:
   Token::Value op_;
   Expression* left_;
   Expression* right_;
+  bool is_for_loop_condition_;
 };
 
 
 class Conditional: public Expression {
  public:
   Conditional(Expression* condition,
               Expression* then_expression,
               Expression* else_expression)
       : condition_(condition),
         then_expression_(then_expression),
@@ skipping 571 matching lines @@
 #undef DEF_VISIT
 
  private:
   bool stack_overflow_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_