Native construction of RegExp result objects, with in-object index and input.

src/x64/codegen-x64.h

Index: src/x64/codegen-x64.h
diff --git a/src/x64/codegen-x64.h b/src/x64/codegen-x64.h
index 081a8a83719b81dd7fbc9b7cf5288e8db897dfbb..95c4773ec43994474bde4f1328090faa4c32ed60 100644
--- a/src/x64/codegen-x64.h
+++ b/src/x64/codegen-x64.h
@@ -582,6 +582,8 @@ class CodeGenerator: public AstVisitor {
   // Support for direct calls from JavaScript to native RegExp code.
   void GenerateRegExpExec(ZoneList<Expression*>* args);
 
+  void GenerateRegExpConstructResult(ZoneList<Expression*>* args);
+
   // Fast support for number to string.
   void GenerateNumberToString(ZoneList<Expression*>* args);