MIPS: Fix [de]serialize problem of root objects.

test/mjsunit/mjsunit.status

 # Copyright 2012 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 448 matching lines @@
   'regress/regress-create-exception': [SKIP],
   'regress/regress-3247124': [SKIP],
 
   # Requires bigger stack size in the Genesis and if stack size is increased,
   # the test requires too much time to run.  However, the problem test covers
   # should be platform-independent.
   'regress/regress-1132': [SKIP],
 
   # Currently always deopt on minus zero
   'math-floor-of-div-minus-zero': [SKIP],
-
-  # BUG(v8:3457).
-  'deserialize-reference': [SKIP],
 }],  # 'arch == mipsel or arch == mips'
 
 ##############################################################################
 ['arch == mips64el', {
 
   # Slow tests which times out in debug mode.
   'try': [PASS, ['mode == debug', SKIP]],
   'debug-scripts-request': [PASS, ['mode == debug', SKIP]],
   'array-constructor': [PASS, ['mode == debug', SKIP]],
 
@@ skipping 31 matching lines @@
   'regress/regress-3218915': [PASS, SLOW],
   'regress/regress-3247124': [PASS, SLOW],
 
   # Requires bigger stack size in the Genesis and if stack size is increased,
   # the test requires too much time to run.  However, the problem test covers
   # should be platform-independent.
   'regress/regress-1132': [SKIP],
 
   # Currently always deopt on minus zero
   'math-floor-of-div-minus-zero': [SKIP],
-
-  # BUG(v8:3457).
-  'deserialize-reference': [SKIP],
 }],  # 'arch == mips64el'
 
 ['arch == mips64el and simulator_run == False', {
   # Random failures on HW, need investigation.
   'debug-*': [SKIP],
 }],
 ##############################################################################
 ['system == windows', {
   # BUG(v8:3435)
   'debug-script-breakpoints': [PASS, FAIL],
@@ skipping 50 matching lines @@
   'never-optimize': [SKIP],
   'regress/regress-2185-2': [SKIP],
   'harmony/object-observe': [SKIP],
   'readonly': [SKIP],
   'array-feedback': [SKIP],
 
   # Deopt every n garbage collections collides with deopt every n times.
   'regress/regress-2653': [SKIP],
 }],  # 'deopt_fuzzer == True'
 ]