Remove the forward-bailout stack from the non-optimizing compiler.

src/ast.h

 // Copyright 2011 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 1270 matching lines @@
   ZoneList<Expression*>* arguments_;
 };
 
 
 class UnaryOperation: public Expression {
  public:
   UnaryOperation(Isolate* isolate,
                  Token::Value op,
                  Expression* expression,
                  int pos)
-      : Expression(isolate), op_(op), expression_(expression), pos_(pos) {
+      : Expression(isolate),
+        op_(op),
+        expression_(expression),
+        pos_(pos),
+        materialize_true_id_(AstNode::kNoNumber),
+        materialize_false_id_(AstNode::kNoNumber) {
     ASSERT(Token::IsUnaryOp(op));
+    if (op == Token::NOT) {
+      materialize_true_id_ = GetNextId(isolate);
+      materialize_false_id_ = GetNextId(isolate);
+    }
   }
 
   DECLARE_NODE_TYPE(UnaryOperation)
 
   virtual bool IsInlineable() const;
 
   virtual bool ResultOverwriteAllowed();
 
   Token::Value op() const { return op_; }
   Expression* expression() const { return expression_; }
   virtual int position() const { return pos_; }
 
+  int MaterializeTrueId() { return materialize_true_id_; }
+  int MaterializeFalseId() { return materialize_false_id_; }
+
  private:
   Token::Value op_;
   Expression* expression_;
   int pos_;
+
+  // For unary not (Token::NOT), the AST ids where true and false will
+  // actually be materialized, respectively.
+  int materialize_true_id_;
+  int materialize_false_id_;
 };
 
 
 class BinaryOperation: public Expression {
  public:
   BinaryOperation(Isolate* isolate,
                   Token::Value op,
                   Expression* left,
                   Expression* right,
                   int pos)
@@ skipping 768 matching lines @@
 
  private:
   Isolate* isolate_;
   bool stack_overflow_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_