https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94438
--- Comment #4 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:8bf5faa9c463f0d53ffe835ba03d4502edfb959d commit r10-7632-g8bf5faa9c463f0d53ffe835ba03d4502edfb959d Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Apr 8 18:24:12 2020 +0200 i386: Don't use AVX512F integral masks for V*TImode [PR94438] The ix86_get_mask_mode hook uses int mask for 512-bit vectors or 128/256-bit vectors with AVX512VL (that is correct), and only for V*[SD][IF]mode if not AVX512BW (also correct), but with AVX512BW it would stop checking the elem_size altogether and pretend the hw has masking support for V*TImode etc., which it doesn't. That can lead to various ICEs later on. 2020-04-08 Jakub Jelinek <ja...@redhat.com> PR target/94438 * config/i386/i386.c (ix86_get_mask_mode): Only use int mask for elem_size 1, 2, 4 and 8. * gcc.target/i386/avx512bw-pr94438.c: New test. * gcc.target/i386/avx512vlbw-pr94438.c: New test.
