   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.formatting.StringFormatter.inst_fmt> -> %r2
   5  getfield_gc_i %r0, FieldDescr<pypy.objspace.std.formatting.BaseStringFormatter.inst_fmtpos> -> %i0
  10  int_sub %i0, $1 -> %i1
  14  -live- %i1, %r0, %r2
  14  goto_if_not_int_lt %i1, $0, L1
  19  strlen %r2 -> %i0
  22  int_add %i1, %i0 -> %i1
  26  L2:
  26  strgetitem %r2, %i1 -> %i0
  30  newstr $1 -> %r2
  33  strsetitem %r2, $0, %i0
  37  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff4f52efa0> -> %r1
  41  setfield_gc_r %r1, %r2, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  46  residual_call_ir_r $<* fn ll_int2hex__Signed_Bool>, I[%i0, $True], R[], <CallDescr(ii) EF=3> -> %r2
  55  -live- %r0, %r1, %r2
  55  getfield_gc_i %r0, FieldDescr<pypy.objspace.std.formatting.BaseStringFormatter.inst_fmtpos> -> %i0
  60  int_sub %i0, $1 -> %i0
  64  inline_call_ir_r <JitCode 'oefmt__unsupported_format_character__R___s__at_index__d_star_3'>, I[%i0], R[$<* struct pypy.objspace.std.typeobject.W_TypeObject>, $<* struct rpy_string>, %r1, %r2] -> %r2
  75  -live- %r2
  75  assert_not_none %r2
  77  -live- %r2
  77  guard_class %r2 -> %i0
  80  -live- %r2
  80  raise %r2
  82  ---
  82  L1:
  82  goto L2
