   0  inline_call_ir_r <JitCode 'interp_w__W_MMap'>, I[$False], R[%r0] -> %r0
   8  -live- %r0
   8  getfield_gc_r %r0, FieldDescr<pypy.module.mmap.interp_mmap.W_MMap.inst_mmap> -> %r0
  13  getfield_gc_i %r0, FieldDescr<rpython.rlib.rmmap.MMap.inst_size> -> %i0
  18  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x44327210> -> %r0
  22  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  27  ref_return %r0
