https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125717
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The auto-parallelizer has not changed, it's unmaintained. IIRC the issue is that the dependences idea of the auto-parallelizer and do concurrent are not compatible. In principle the frontend could be more selective with setting the flag, but DO CONCURRENT does not mean there are no dependences at all(?)
