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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/29611] Optimized AVX2 string functions unconditionally
 use BMI2 instructions
Date: Thu, 29 Sep 2022 02:35:59 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29611

--- Comment #23 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot g=
nu.org> ---
The release/2.29/master branch has been updated by Sunil Pandey
<skpgkp2@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dglibc.git;h=3D986e7b911fd36bd4f38=
807bf25be6a1ade4d9688

commit 986e7b911fd36bd4f38807bf25be6a1ade4d9688
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Apr 19 10:45:07 2021 -0700

    x86-64: Require BMI2 for strchr-avx2.S [BZ #29611]

    Since strchr-avx2.S updated by

    commit 1f745ecc2109890886b161d4791e1406fdfc29b8
    Author: noah <goldstein.w.n@gmail.com>
    Date:   Wed Feb 3 00:38:59 2021 -0500

        x86-64: Refactor and improve performance of strchr-avx2.S

    uses sarx:

    c4 e2 72 f7 c0          sarx   %ecx,%eax,%eax

    for strchr-avx2 family functions, require BMI2 in ifunc-impl-list.c and
    ifunc-avx2.h.

    This fixes BZ #29611.

    (cherry picked from commit 83c5b368226c34a2f0a5287df40fc290b2b34359)

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