   0  inline_call_r_r <JitCode 'allocate_instance__W_Chain'>, R[%r0] -> %r0
   6  -live- %r0, %r1
   9  guard_class %r1 -> %i0
  12  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_shortcut___iter__> -> %i0
  17  -live- %i0, %r0, %r1
  20  int_guard_value %i0
  22  residual_call_r_r %i0, <IndirectCallTargets>, R[%r1], <CallDescr(r) EF=7> -> %r1
  29  -live- %r0, %r1
  32  setfield_gc_r %r0, %r1, FieldDescr<pypy.module.itertools.interp_itertools.W_Chain.inst_w_iterables>
  37  setfield_gc_r %r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.module.itertools.interp_itertools.W_Chain.inst_w_it>
  42  ref_return %r0
