Recognize in the fast-mode code generator when a subexpression is a...

src/location.h

 // Copyright 2009 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 23 matching lines @@
 namespace internal {
 
 class Location BASE_EMBEDDED {
  public:
   static Location Temporary() { return Location(TEMP); }
   static Location Nowhere() { return Location(NOWHERE); }
   static Location Constant() { return Location(CONSTANT); }
 
   bool is_temporary() { return type_ == TEMP; }
   bool is_nowhere() { return type_ == NOWHERE; }
+  bool is_constant() { return type_ == CONSTANT; }
 
  private:
   enum Type { TEMP, NOWHERE, CONSTANT };
 
   explicit Location(Type type) : type_(type) {}
 
   Type type_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LOCATION_H_