https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96782
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:ad64e807ffca93e927b68f1aa0cea54dacbe9afd commit r11-6433-gad64e807ffca93e927b68f1aa0cea54dacbe9afd Author: Jakub Jelinek <ja...@redhat.com> Date: Mon Jan 4 10:37:12 2021 +0100 match.pd: Fold x == ~x to false [PR96782] x is never equal to ~x, so we can fold such comparisons to constants. 2021-01-04 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/96782 * match.pd (x == ~x -> false, x != ~x -> true): New simplifications. * gcc.dg/tree-ssa/pr96782.c: New test.