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Subject: [Bug rtl-optimization/94790] Failure to use andn in specific pattern
 in which it is available
Date: Fri, 14 Jan 2022 05:02:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94790

--- Comment #8 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:b77e3b4e4589e56c01511fabdbaadb029cd47f5c

commit r12-6567-gb77e3b4e4589e56c01511fabdbaadb029cd47f5c
Author: liuhongt <hongtao.liu@intel.com>
Date:   Thu Jan 13 22:51:49 2022 +0800

    Fix ICE of unrecognizable insn. [PR target/104001]

    For define_insn_and_split "*xor2andn":

    1. Refine predicate of operands[0] from nonimmediate_operand to
    register_operand.
    2. Remove TARGET_AVX512BW from condition to avoid kmov when TARGET_BMI
    is not available.

    gcc/ChangeLog:

            PR target/104001
            PR target/94790
            PR target/104014
            * config/i386/i386.md (*xor2andn): Refine predicate of
            operands[0] from nonimmediate_operand to
            register_operand, remove TARGET_AVX512BW from condition.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr104001.c: New test.=