[Bug target/94438] [8/9/10 Regression] ICE: verify_gimple failed: position plus size exceeds size of referenced object in 'bit_field_ref' with -mavx512vbmi -mavx512vl

[cvs-commit at gcc dot gnu.org]

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 <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:8bf5faa9c463f0d53ffe835ba03d4502edfb959d

commit r10-7632-g8bf5faa9c463f0d53ffe835ba03d4502edfb959d
Author: Jakub Jelinek <jakub@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  <jakub@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.