https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118328
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Ken Jin from comment #7) > Specifically, zoom in on the function _TAIL_CALL_YIELD_VALUE, it produces on > GCC 15 (note the assembly here might be slightly different than the one in > .s file, because it's from a different build but same flags passed): That is about aligning the stack. And that is a x86_64 specific issue I think. Let me try to get a reduced testcase for that and file seperately.