   0  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000555ac5cb23d8> -> %r0
   4  inline_call_ir_v <JitCode 'W_CDLL.__init__'>, I[$-1, $0], R[%r0, $<* struct rpy_string>]
  13  -live- %r0
  16  ref_return %r0
