Simplify IA32 code generator API.

src/ast.h

 // Copyright 2010 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 1351 matching lines @@
 };
 
 
 class BinaryOperation: public Expression {
  public:
   BinaryOperation(Token::Value op, Expression* left, Expression* right)
       : op_(op), left_(left), right_(right) {
     ASSERT(Token::IsBinaryOp(op));
   }
 
-  BinaryOperation(BinaryOperation* other, Expression* left, Expression* right);
+  // Construct a binary operation with a given operator and left and right
+  // subexpressions.  The rest of the expression state is copied from
+  // another expression.
+  BinaryOperation(Expression* other,
+                  Token::Value op,
+                  Expression* left,
+                  Expression* right);
 
   virtual void Accept(AstVisitor* v);
 
   // Type testing & conversion
   virtual BinaryOperation* AsBinaryOperation() { return this; }
 
   virtual bool IsPrimitive();
   virtual bool IsCritical();
 
   // True iff the result can be safely overwritten (to avoid allocation).
@@ skipping 729 matching lines @@
 
   // Holds the result of copying an expression.
   Expression* expr_;
   // Holds the result of copying a statement.
   Statement* stmt_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_