[Bug target/107093] AVX512 mask operations not simplified in fully masked loop

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107093

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:498ad738690b3c464f901d63dcd4d0f49a50dd00

commit r13-3218-g498ad738690b3c464f901d63dcd4d0f49a50dd00
Author: liuhongt <hongtao.liu@intel.com>
Date:   Mon Oct 10 11:31:48 2022 +0800

    Add define_insn_and_split to support general version of "kxnor".

    For genereal_reg_operand, it will be splitted into xor + not.
    For mask_reg_operand, it will be splitted with UNSPEC_MASK_OP just
    like what we did for other logic operations.

    The patch will optimize xor+not to kxnor when possible.

    gcc/ChangeLog:

            PR target/107093
            * config/i386/i386.md (*notxor<mode>_1): New post_reload
            define_insn_and_split.
            (*notxorqi_1): Ditto.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr107093.c: New test.