   0  inline_call_r_r <JitCode 'ObjSpace.str_or_None_w'>, R[%r1] -> %r1
   6  -live- %r0, %r1
   6  inline_call_r_r <JitCode 'allocate_instance__MultibyteIncrementalDecoder'>, R[%r0] -> %r0
  12  -live- %r0, %r1
  12  inline_call_r_v <JitCode 'MultibyteIncrementalBase.__init__'>, R[%r0, %r1]
  18  -live- %r0
  18  -live- %r0
  18  goto_if_not_ptr_iszero %r0, L1
  22  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  24  ---
  24  L1:
  24  ref_return %r0
