https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68523
Segher Boessenkool <segher at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> --- The constant loop is now completely optimised away before expand; use -fno-loop-interchange to prevent that. Even with that I see no problem any more now, maybe the new frequency stuff changed this? Resolving as fixed.