   0  inline_call_r_r <JitCode 'Unmarshaller.get_str'>, R[%r0] -> %r0
   6  -live- %r0
   6  -live- %r0
   6  goto_if_not_ptr_iszero %r0, L1
  10  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  12  ---
  12  L1:
  12  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x10096124f10> -> %r1
  16  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  21  ref_return %r1
