   0  int_signext %i0, $4 -> %i0
   4  residual_call_ir_i $<* fn ccall_nice__INT>, I[%i0], R[], <CallDescr(i) EF=7> -> %i0
  12  -live- %i0
  15  goto_if_not_int_eq %i0, $-1, L1
  20  residual_call_ir_i $<* fn _ll_1_threadlocalref_get__INTLlT_Signed>, I[$CDefinedIntSymbolic('RPY_TLOFS_rpy_errno')], R[], <CallDescr(i) EF=2 OS_THREADLOCALREF_GET> -> %i1
  28  -live- %i0, %i1
  31  goto_if_not_int_is_true %i1, L2
  35  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab746d4090> -> %r0
  39  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<exceptions.EnvironmentError.inst_strerror>
  44  setfield_gc_i %r0, %i1, FieldDescr<exceptions.EnvironmentError.inst_errno>
  49  assert_not_none %r0
  51  -live- %r0
  54  raise %r0
  56  ---
  56  L2:
  56  int_return %i0
  58  ---
  58  L1:
  58  int_return %i0
