Disable the irt_tls_test for bitcode.

src/untrusted/irt/nacl.scons

 # -*- python -*-
 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 Import('env')
 
 # Since the integrated runtime will be built with newlib,
 # there's no need to build this module against glibc.
@@ skipping 49 matching lines @@
 irt_library = blob_env.ComponentProgram(
     'irt.nexe', files,
     EXTRA_LIBS=['ppruntime',
                 'srpc',
                 'imc',
                 'platform',
                 'gio',
                 'pthread',
                 'm'])
 
-if env.Bit('build_x86_32'):
+if env.Bit('build_x86_32') and not env.Bit('bitcode'):
   # Make sure that the linked IRT nexe never uses TLS via %gs access.
   # All IRT code must avoid direct use of the TLS ABI register, which
   # is reserved for user TLS.  Instead, ensure all TLS accesses use a
   # call to __nacl_read_tp, which the IRT code overrides to segregate
   # IRT-private TLS from user TLS.
   node = env.CommandTest('irt_tls_test.out',
                          ['${PYTHON}', env.File('check_tls.py'),
                           '${OBJDUMP}', irt_library])
   env.AddNodeToTestSuite(node, ['small_tests'], 'run_irt_tls_test')