   0  getarrayitem_gc_r %r1, $0, <rpython.jit.backend.llsupport.descr.ArrayDescr object at 0x000002aac88c19f0> -> %r0
   6  inline_call_ir_r <JitCode 'interp_w__W_Struct'>, I[$False], R[%r0] -> %r0
  14  -live- %r0, %r1
  14  getarrayitem_gc_r %r1, $1, <rpython.jit.backend.llsupport.descr.ArrayDescr object at 0x000002aac88c19f0> -> %r1
  20  inline_call_ir_r <JitCode 'fixedview__False'>, I[$-1, $False], R[%r1] -> %r1
  29  -live- %r0, %r1
  29  getfield_gc_r_pure %r0, FieldDescr<pypy.module.struct.interp_struct.W_Struct.inst_format> -> %r0
  34  -live- %r0, %r1
  34  str_guard_value %r0, $<* fn _ll_2_str_eq_nonnull__rpy_stringPtr_rpy_stringPtr>, <CallDescr(rr) EF=0 OS_STREQ_NONNULL> -> %r2
  40  inline_call_r_r <JitCode '_pack'>, R[%r0, %r1] -> %r0
  47  -live- %r0
  47  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000002aac5501f30> -> %r1
  51  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  56  ref_return %r1
