   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.dictproxyobject.W_DictProxyObject.inst_w_mapping> -> %r0
   5  inline_call_r_r <JitCode '_len'>, R[%r0] -> %r0
  11  -live- %r0
  11  -live- %r0
  11  guard_class %r0 -> %i0
  14  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_int> -> %i0
  19  -live- %i0, %r0
  19  int_guard_value %i0
  21  residual_call_r_r %i0, <IndirectCallTargets>, R[%r0], <CallDescr(r) EF=7> -> %r0
  28  -live- %r0
  28  inline_call_r_i <JitCode '_check_len_result'>, R[%r0] -> %i0
  34  -live- %r0
  34  ref_return %r0
