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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 4 Feb 2022 11:13:14 -0800
Message-ID: <CAMe9rOq3UdBSO8_YKcwKTRVAPTdM8odDYN1iyRqCX_=YF1Nz7A@mail.gmail.com>
Subject: Re: [PATCH v4 3/5] x86: Optimize strcmp-avx2.S
To: Joseph Myers <joseph@codesourcery.com>
Cc: Noah Goldstein <goldstein.w.n@gmail.com>,
 GNU C Library <libc-alpha@sourceware.org>
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On Fri, Feb 4, 2022 at 10:57 AM Joseph Myers <joseph@codesourcery.com> wrote:
>
> I've seeing a build failure for x32 that looks likely to be caused by this
> patch.
>
> ../sysdeps/x86_64/multiarch/strcmp-avx2.S: Assembler messages:
> ../sysdeps/x86_64/multiarch/strcmp-avx2.S:109: Error: unsupported instruction `mov'
> /scratch/jmyers/glibc-bot/build/glibcs/x86_64-linux-gnu-x32/glibc/sysd-rules:847: recipe for target '/scratch/jmyers/glibc-bot/build/glibcs/x86_64-linux-gnu-x32/glibc/string/strncmp-avx2.o' failed
> make[3]: *** [/scratch/jmyers/glibc-bot/build/glibcs/x86_64-linux-gnu-x32/glibc/string/strncmp-avx2.o] Error 1
>

Fixed by:

commit 0e0199a9e02ebe42e2b36958964d63f03573c382
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Feb 4 11:11:08 2022 -0800

    x86-64: Fix strcmp-evex.S

    Change "movl %edx, %rdx" to "movl %edx, %edx" in:

    commit 8418eb3ff4b781d31c4ed5dc6c0bd7356bc45db9
    Author: Noah Goldstein <goldstein.w.n@gmail.com>
    Date:   Mon Jan 10 15:35:39 2022 -0600

        x86: Optimize strcmp-evex.S

commit c15efd011cea3d8f0494269eb539583215a1feed
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Feb 4 11:09:10 2022 -0800

    x86-64: Fix strcmp-avx2.S

    Change "movl %edx, %rdx" to "movl %edx, %edx" in:

    commit b77b06e0e296f1a2276c27a67e1d44f2cfa38d45
    Author: Noah Goldstein <goldstein.w.n@gmail.com>
    Date:   Mon Jan 10 15:35:38 2022 -0600

        x86: Optimize strcmp-avx2.S

-- 
H.J.