https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90311
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- At least from other PRs, I think it is important to differentiate in what is emitted/matched for the multi-word addition (generally that has been using CC_V mode I think on ARM) vs. what is emitted/matched for multi-word subtraction (which has been using CC_C mode I think). In this PR, it seems to be a mix of both.
