https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65076
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to Richard Biener from comment #1) > So it's either time spent in the inliner (unlikely, though the patch has an > extra update_callee_keys call) or different (early) inlining decisions. > > I remember you saying that without LTO/PGO-ing GCC the difference is a lot > smaller? No, with --disable-bootstrap it still goes from 27.133 (r219451) to 31.116 (r219452).