https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103974
--- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> --- ACK. I wandered through the tester this morning, the vast majority of the current failures are the ira_flattening ICE. Though I think there's likely one other ICE in IRA (frv-elf, ICE in check_allocation). I'll restart everything once you've got your patch ready and file fresh bugs for anything that's still problematical after the ira_flattening ICE is resolved.