First implementation of allocation elimination in Hydrogen.

src/objects.cc

 // Copyright 2013 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 10618 matching lines @@
           PrintF(out, "{input=%d}", input_slot_index);
           break;
         }
 
         case Translation::LITERAL: {
           unsigned literal_index = iterator.Next();
           PrintF(out, "{literal_id=%u}", literal_index);
           break;
         }
 
-        case Translation::ARGUMENTS_OBJECT: {
+        case Translation::DUPLICATED_OBJECT: {
+          int object_index = iterator.Next();
+          PrintF(out, "{object_index=%d}", object_index);
+          break;
+        }
+
+        case Translation::ARGUMENTS_OBJECT:
+        case Translation::CAPTURED_OBJECT: {
           int args_length = iterator.Next();
           PrintF(out, "{length=%d}", args_length);
           break;
         }
       }
       PrintF(out, "\n");
     }
   }
 }
 
@@ skipping 5319 matching lines @@
 #define ERROR_MESSAGES_TEXTS(C, T) T,
   static const char* error_messages_[] = {
       ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
   };
 #undef ERROR_MESSAGES_TEXTS
   return error_messages_[reason];
 }
 
 
 } }  // namespace v8::internal