https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103438
--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> --- > I notice that you don't see -faggressive-loop-optimizations in your diff > output of the patch. Correct. The option should be enabled at all levels: faggressive-loop-optimizations Common Var(flag_aggressive_loop_optimizations) Optimization Init(1) Aggressively optimize loops using language constraints. There's Init(1).