   0  residual_call_ir_i $<* fn ccall_nice__Signed>, I[%i0], R[], <CallDescr(i) EF=7> -> %i0
   8  -live- %i0
  11  goto_if_not_int_eq %i0, $-1, L1
  16  residual_call_ir_i $<* fn _ll_1_threadlocalref_get__SignedLlT_Signed>, I[$CDefinedIntSymbolic('RPY_TLOFS_rpy_errno')], R[], <CallDescr(i) EF=2 OS_THREADLOCALREF_GET> -> %i1
  24  -live- %i0, %i1
  27  goto_if_not_int_is_true %i1, L2
  31  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x20060af0> -> %r0
  35  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<exceptions.EnvironmentError.inst_strerror>
  40  setfield_gc_i %r0, %i1, FieldDescr<exceptions.EnvironmentError.inst_errno>
  45  assert_not_none %r0
  47  -live- %r0
  50  raise %r0
  52  ---
  52  L2:
  52  int_return %i0
  54  ---
  54  L1:
  54  int_return %i0
