https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67196
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:61051ee5cfd59ee292984641d02caac85f6dfac3 commit r13-2273-g61051ee5cfd59ee292984641d02caac85f6dfac3 Author: Richard Biener <rguent...@suse.de> Date: Tue Aug 30 11:47:49 2022 +0200 tree-optimization/67196 - normalize use predicates earlier The following makes sure to have use predicates simplified and normalized before doing uninit_analysis::overlap because that otherwise cannot pick up all flag setting cases. This fixes half of the issue in PR67196 and conveniently resolves the XFAIL in gcc.dg/uninit-pred-7_a.c. PR tree-optimization/67196 * gimple-predicate-analysis.cc (uninit_analysis::is_use_guarded): Simplify and normalize use prediates before first use. * gcc.dg/uninit-pred-7_a.c: Un-XFAIL.