https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111778
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- On the date. It is the author date vs commit date. You can see that here https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=8f1a70a4fbcc6441c70da60d4ef6db1e5635e18a .