   0  getfield_gc_r_pure %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value> -> %r0
   5  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000563a72793980> -> %r1
   9  setfield_gc_r %r1, %r0, FieldDescr<rpython.rlib.buffer.StringBuffer.inst_value>
  14  setfield_gc_i %r1, $1, FieldDescr<rpython.rlib.buffer.Buffer.inst_readonly>
  19  ref_return %r1
