https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96691
--- 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:8fc183ccd0628465205b8a88c29ab69bfe74a08a commit r11-6651-g8fc183ccd0628465205b8a88c29ab69bfe74a08a Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Jan 13 19:54:49 2021 +0100 match.pd: Fold (~X | C) ^ D into (X | C) ^ (~D ^ C) if (~D ^ C) can be simplified [PR96691] These simplifications are only simplifications if the (~D ^ C) or (D ^ C) expressions fold into gimple vals, but in that case they decrease number of operations by 1. 2021-01-13 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/96691 * match.pd ((~X | C) ^ D -> (X | C) ^ (~D ^ C), (~X & C) ^ D -> (X & C) ^ (D ^ C)): New simplifications if (~D ^ C) or (D ^ C) can be simplified. * gcc.dg/tree-ssa/pr96691.c: New test.
