   0  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab30211670> -> %r2
   4  inline_call_r_v <JitCode 'IdentityIteratorImplementation.__init__'>, R[%r2, %r0, %r1]
  11  -live- %r2
  14  ref_return %r2
