Remapped regexp last-match-info to put subject and index before match indices.

src/jsregexp.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 94 matching lines @@
                                      Handle<JSArray> lastMatchInfo);
 
   static Handle<Object> IrregexpExecGlobal(Handle<JSRegExp> regexp,
                                            Handle<String> subject,
                                            Handle<JSArray> lastMatchInfo);
 
   // Offsets in the lastMatchInfo array.
   static const int kLastCaptureCount = 0;
   static const int kLastSubject = 1;
   static const int kLastInput = 2;
-  static const int kFirstCapture = 1;
+  static const int kFirstCapture = 3;
   static const int kLastMatchOverhead = 3;
 
   // Used to access the lastMatchInfo array.
   static int GetCapture(FixedArray* array, int index) {
     return Smi::cast(array->get(index + kFirstCapture))->value();
   }
 
   static void SetLastCaptureCount(FixedArray* array, int to) {
     array->set(kLastCaptureCount, Smi::FromInt(to));
   }
 
   static void SetLastSubject(FixedArray* array, String* to) {
-    int capture_count = GetLastCaptureCount(array);
-    array->set(capture_count + kLastSubject, to);
+    array->set(kLastSubject, to);
   }
 
   static void SetLastInput(FixedArray* array, String* to) {
-    int capture_count = GetLastCaptureCount(array);
-    array->set(capture_count + kLastInput, to);
+    array->set(kLastInput, to);
   }
 
   static void SetCapture(FixedArray* array, int index, int to) {
     array->set(index + kFirstCapture, Smi::FromInt(to));
   }
 
   static int GetLastCaptureCount(FixedArray* array) {
     return Smi::cast(array->get(kLastCaptureCount))->value();
   }
 
@@ skipping 1236 matching lines @@
                                    Handle<String> pattern,
                                    bool is_ascii);
 
   static void DotPrint(const char* label, RegExpNode* node, bool ignore_case);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_JSREGEXP_H_