https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96352
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- It was a bugfix. If you want to have small binaries use -Os. You can also tune the inliner with various knobs, the most important maybe --param inline-unit-growth which defaults to 40 (40% growth).