   0  residual_call_irf_r $<* fn fromfloat>, I[], R[], F[%f0], <CallDescr(f) EF=4> -> %r0
   9  -live- %r0
  12  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000560933a22640> -> %r1
  16  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.longobject.W_LongObject.inst_num>
  21  ref_return %r1
