Pre-create properties on JSRegExp objects

src/heap.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 131 matching lines @@
   V(result_symbol, ".result")                                            \
   V(catch_var_symbol, ".catch-var")                                      \
   V(empty_symbol, "")                                                    \
   V(eval_symbol, "eval")                                                 \
   V(function_symbol, "function")                                         \
   V(length_symbol, "length")                                             \
   V(name_symbol, "name")                                                 \
   V(number_symbol, "number")                                             \
   V(Number_symbol, "Number")                                             \
   V(RegExp_symbol, "RegExp")                                             \
+  V(source_symbol, "source")                                             \
+  V(global_symbol, "global")                                             \
+  V(ignore_case_symbol, "ignoreCase")                                    \
+  V(multiline_symbol, "multiline")                                       \
+  V(last_index_symbol, "lastIndex")                                      \
   V(object_symbol, "object")                                             \
   V(prototype_symbol, "prototype")                                       \
   V(string_symbol, "string")                                             \
   V(String_symbol, "String")                                             \
   V(Date_symbol, "Date")                                                 \
   V(this_symbol, "this")                                                 \
   V(to_string_symbol, "toString")                                        \
   V(char_at_symbol, "CharAt")                                            \
   V(undefined_symbol, "undefined")                                       \
   V(value_of_symbol, "valueOf")                                          \
@@ skipping 1638 matching lines @@
 
   // To speed up scavenge collections new space string are kept
   // separate from old space strings.
   static List<Object*> new_space_strings_;
   static List<Object*> old_space_strings_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_