   0  inline_call_r_r <JitCode '_len'>, R[%r0] -> %r0
   6  -live- %r0
   6  -live- %r0
   6  guard_class %r0 -> %i0
   9  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_int> -> %i0
  14  -live- %i0, %r0
  14  int_guard_value %i0
  16  residual_call_r_r %i0, <IndirectCallTargets>, R[%r0], <CallDescr(r) EF=7> -> %r0
  23  -live- %r0
  23  inline_call_r_i <JitCode '_check_len_result'>, R[%r0] -> %i0
  29  -live- %i0
  29  int_return %i0
