https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98848
--- Comment #9 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:1592b74350a0311e4c95a0192ea9c943847e7bc0 commit r11-7034-g1592b74350a0311e4c95a0192ea9c943847e7bc0 Author: Jakub Jelinek <ja...@redhat.com> Date: Tue Feb 2 10:32:23 2021 +0100 tree-vect-patterns: Don't create over widening patterns for stmts used in reductions [PR98848] As discussed in the PR, the reduction code isn't able to cope with type promotions/demotions in the reduction computation, so if we recognize an over-widening pattern that has vect_reduction_def type, we most likely make it non-vectorizable. 2021-02-02 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/98848 * tree-vect-patterns.c (vect_recog_over_widening_pattern): Punt if STMT_VINFO_DEF_TYPE (last_stmt_info) is vect_reduction_def. * gcc.dg/vect/pr98848.c: New test. * gcc.dg/vect/pr92205.c: Remove xfail.
