   0  inline_call_ir_r <JitCode 'interp_w__W_CData'>, I[$False], R[%r0] -> %r0
   8  -live- %r0
   8  getfield_gc_i_pure %r0, FieldDescr<pypy.module._cffi_backend.cdataobj.W_CData.inst__ptr> -> %i0
  13  int_rshift %i0, $4 -> %i1
  17  int_xor %i0, %i1 -> %i0
  21  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x44327210> -> %r0
  25  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  30  ref_return %r0
