def GuessTargetArch(bisect_bot):
  """Returns target architecture for the bisect job."""
  if 'x64' in bisect_bot or 'win64' in bisect_bot:
    return 'x64'
  elif bisect_bot in ['android_nexus9_perf_bisect']:
    return 'arm64'
  else:
    return 'ia32'