https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106905
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by hongtao Liu <liuho...@gcc.gnu.org>: https://gcc.gnu.org/g:93b09bf3246f413b8e469ebfd8ce43947c0073a6 commit r13-2656-g93b09bf3246f413b8e469ebfd8ce43947c0073a6 Author: liuhongt <hongtao....@intel.com> Date: Tue Sep 13 13:25:24 2022 +0800 Check another epilog variable peeling case in vectorizable_nonlinear_induction. in vectorizable_nonlinear_induction, r13-2503-gc13223b790bbc5 prevent variable peeling by only checking LOOP_VINFO_MASK_SKIP_NITERS (loop_vinfo). But when "!vect_use_loop_mask_for_alignment_p (loop_vinfo) && LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0", vectorizer will still do variable peeling for epilog, and it hits gcc_assert in vect_peel_nonlinear_iv_init. gcc/ChangeLog: PR tree-optimization/106905 * tree-vect-loop.cc (vectorizable_nonlinear_induction): Return false when !vect_use_loop_mask_for_alignment_p (loop_vinfo) && LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0. gcc/testsuite/ChangeLog: * gcc.target/i386/pr106905.c: New test. * gcc.target/ia64/pr106905.c: New test.
