Fix decoding of object pool access in code patching on ARM.

tests/language/language.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 509 matching lines @@
 
 # TODO(tball): Assign proper bug numbers.
 class_literal_test/none: Fail
 
 import_core_prefix_test: Pass
 prefix22_test: Pass
 invocation_mirror_test: Fail, OK # hardcoded names.
 super_call4_test: Fail, OK # hardcoded names.
 
 [ $arch == simarm || $arch == arm ]
-arithmetic_test: Fail, Crash
 bit_operations_test: Crash, Fail
-char_escape_test: Pass, Crash
 deopt_smi_op_test: Fail
-div_with_power_of_two_test: Fail
 gc_test: Crash
 invocation_mirror_test: Fail
 load_to_load_forwarding_vm_test: Fail
 named_parameters_with_conversions_test: Pass, Crash
-positive_bit_operations_test: Pass, Fail, Crash
-left_shift_test: Pass, Fail
 
 # large_implicit_getter_test Passes on ReleaseARM, Crashes in SIMARM and
 # DebugARM. Should crash on ReleaseARM, but there is no exception on an
 # unaligned access. stack_overflow_test and  _stacktrace_test have the same
 # problem.
 large_implicit_getter_test: Crash, Pass
 stack_overflow_test: Crash, Pass
 stack_overflow_stacktrace_test: Crash, Pass
 
+[ ($arch == simarm || $arch == arm) && $mode == debug ]
+arithmetic_test: Pass, Crash
+char_escape_test: Pass, Crash
+
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip