   0  residual_call_ir_i $<* fn ccall_sem_post>, I[%i0], R[], <CallDescr(i) EF=2> -> %i0
   8  -live- %i0
   8  goto_if_not_int_lt %i0, $0, L1
  13  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> -> %i0
  21  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000002aabdec1d00> -> %r0
  25  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<exceptions.EnvironmentError.inst_strerror>
  30  setfield_gc_i %r0, %i0, FieldDescr<exceptions.EnvironmentError.inst_errno>
  35  assert_not_none %r0
  37  -live- %r0
  37  guard_class %r0 -> %i0
  40  -live- %r0
  40  raise %r0
  42  ---
  42  L1:
  42  void_return
