   0  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x4f1ee590> -> %r1
   4  setfield_gc_r %r1, %r0, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_input>
   9  setfield_gc_i %r1, $0, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_inputpos>
  14  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x4f1f87f0> -> %r0
  18  setfield_gc_r %r0, %r1, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_mr>
  23  setfield_gc_i %r0, $False, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_bigendian>
  28  inline_call_r_i <JitCode 'do_unpack_fastpath__rpython_rlib_rstruct_runpack_ReaderForPos0'>, R[%r0] -> %i0
  34  -live- %i0, %r0
  34  catch_exception L1
  37  setfield_gc_i %r0, %i0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_value>
  42  L2:
  42  getfield_gc_i %r0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_value> -> %i0
  47  int_return %i0
  49  ---
  49  L1:
  49  goto_if_exception_mismatch $<* struct object_vtable>, L3
  53  getfield_gc_r %r0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_mr> -> %r1
  58  inline_call_ir_r <JitCode 'MasterReader.read'>, I[$1], R[%r1] -> %r1
  66  -live- %r0, %r1
  66  strgetitem %r1, $0 -> %i0
  70  int_lshift %i0, $0 -> %i0
  74  int_or %i0, $0 -> %i0
  78  setfield_gc_i %r0, %i0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_value>
  83  goto L2
  86  ---
  86  L3:
  86  reraise
