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Subject: [Bug rtl-optimization/53652] *andn* does not always get used with
 simd and loading from memory
Date: Tue, 11 Jan 2022 02:13:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53652

--- 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:4bb79e27c02c5cd57d5781bef20e70982d898c40

commit r12-6428-g4bb79e27c02c5cd57d5781bef20e70982d898c40
Author: Haochen Jiang <haochen.jiang@intel.com>
Date:   Thu Dec 30 15:47:58 2021 +0800

    Extend predicate of operands[1] from register_operand to vector_operand=
 for
andnot insn.

    This can do optimization like

    -       pcmpeqd %xmm0, %xmm0
    -       pxor    g(%rip), %xmm0
    -       pand    %xmm1, %xmm0
    +       movdqa  g(%rip), %xmm0
    +       pandn   %xmm1, %xmm0

    gcc/ChangeLog:

            PR target/53652
            * config/i386/sse.md (*andnot<mode>3): Extend predicate of
            operands[1] from register_operand to vector_operand.

    gcc/testsuite/ChangeLog:

            PR target/53652
            * gcc.target/i386/pr53652-1.c: New test.=