https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72855
--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- Some experiments on trunk: - Using Bin's patch, I see compile time reduced to ~14 minutes. - Using Richi's patch, I see compile time reduced to ~9 minutes. So both are quite helpful compared to somewhere around 2 hours. I'll plan to implement the pre-approved patch, but first I want to try to dig into why flag_checking appears to have an unexpected value.