https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111147
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>: https://gcc.gnu.org/g:7c04da768c1fc22e0607e3ccad87e2c793499797 commit r14-3540-g7c04da768c1fc22e0607e3ccad87e2c793499797 Author: Andrew Pinski <apin...@marvell.com> Date: Mon Aug 28 10:04:00 2023 -0700 MATCH: Move `(x | y) & (~x ^ y)` over to use bitwise_inverted_equal_p This moves the match pattern `(x | y) & (~x ^ y)` over to use bitwise_inverted_equal_p. This now also allows to optmize comparisons and also catches the missed `(~x | y) & (x ^ y)` transformation into `~x & y`. OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions. gcc/ChangeLog: PR tree-optimization/111147 * match.pd (`(x | y) & (~x ^ y)`) Use bitwise_inverted_equal_p instead of matching bit_not. gcc/testsuite/ChangeLog: PR tree-optimization/111147 * gcc.dg/tree-ssa/cmpbit-4.c: New test.
