https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99470
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- these two code are not equivalent at all due to overflows and such.
pinskia at gcc dot gnu.org via Gcc-bugs Mon, 08 Mar 2021 10:05:37 -0800
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99470
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- these two code are not equivalent at all due to overflows and such.