Unify the way cctest initalizes the VM for each test case.

src/utils.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 1001 matching lines @@
     return (bits_ & set.bits_) != 0;
   }
   void Add(E element) { bits_ |= Mask(element); }
   void Add(const EnumSet& set) { bits_ |= set.bits_; }
   void Remove(E element) { bits_ &= ~Mask(element); }
   void Remove(const EnumSet& set) { bits_ &= ~set.bits_; }
   void RemoveAll() { bits_ = 0; }
   void Intersect(const EnumSet& set) { bits_ &= set.bits_; }
   T ToIntegral() const { return bits_; }
   bool operator==(const EnumSet& set) { return bits_ == set.bits_; }
+  EnumSet<E, T> operator|(const EnumSet& set) const {
+    return EnumSet<E, T>(bits_ | set.bits_);
+  }
 
  private:
   T Mask(E element) const {
     // The strange typing in ASSERT is necessary to avoid stupid warnings, see:
     // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43680
     ASSERT(static_cast<int>(element) < static_cast<int>(sizeof(T) * CHAR_BIT));
     return 1 << element;
   }
 
   T bits_;
@@ skipping 45 matching lines @@
 
   // Every compiled stub starts with this id.
   static const int kStubEntryId = 5;
 
   int id_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_UTILS_H_