   0  residual_call_ir_i $<* fn ccall_ctermid__arrayPtr>, I[$<* None>], R[], <CallDescr(i) EF=7> -> %i0
   8  -live- %i0
   8  residual_call_ir_r $<* fn charp2str>, I[%i0], R[], <CallDescr(i) EF=5> -> %r0
  16  -live- %r0
  16  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000002aac5501f30> -> %r1
  20  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  25  ref_return %r1
