   0  int_signext %i0, $4 -> %i0
   4  residual_call_ir_i $<* fn ccall_XML_ErrorString__INT>, I[%i0], R[], <CallDescr(i) EF=7> -> %i0
  12  -live- %i0
  12  residual_call_ir_r $<* fn charp2str>, I[%i0], R[], <CallDescr(i) EF=5> -> %r0
  20  -live- %r0
  20  -live- %r0
  20  goto_if_not_ptr_iszero %r0, L1
  24  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  26  ---
  26  L1:
  26  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x10096124f10> -> %r1
  30  setfield_gc_r %r1, %r0, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  35  ref_return %r1
