   0  getarrayitem_gc_r %r1, $0, <rpython.jit.backend.llsupport.descr.ArrayDescr object at 0x0000000177231bb0> -> %r0
   6  inline_call_ir_r <JitCode 'interp_w__W_Struct'>, I[$False], R[%r0] -> %r0
  14  -live- %r0, %r1
  14  getarrayitem_gc_r %r1, $1, <rpython.jit.backend.llsupport.descr.ArrayDescr object at 0x0000000177231bb0> -> %r1
  20  getfield_gc_r_pure %r0, FieldDescr<pypy.module.struct.interp_struct.W_Struct.inst_format> -> %r0
  25  -live- %r0, %r1
  25  str_guard_value %r0, $<* fn _ll_2_str_eq_nonnull__rpy_stringPtr_rpy_stringPtr>, <CallDescr(rr) EF=0 OS_STREQ_NONNULL> -> %r2
  31  inline_call_r_r <JitCode 'getarg_w__s_'>, R[$<* struct rpy_string>, %r1] -> %r1
  38  -live- %r0, %r1
  38  inline_call_r_r <JitCode '_unpack'>, R[%r0, %r1] -> %r0
  45  -live- %r0
  45  ref_return %r0
