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From: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Tue, 15 Feb 2022 06:58:55 -0600
Message-ID: <CAFUsyfKkkn6uy-WKR=9NU8qJ9RR=fV3v=-X8bU0sqzb96vz6hw@mail.gmail.com>
Subject: Re: [PATCH v3 5/7] x86: Optimize strcmp-avx2.S
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: "H.J. Lu" <hjl.tools@gmail.com>, Sunil K Pandey <skpgkp2@gmail.com>, 
 Noah Goldstein via Libc-alpha <libc-alpha@sourceware.org>
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On Tue, Feb 15, 2022 at 6:55 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> #0  0x00007f4fd4a61df3 in __strncmp_avx2_w (a=0x55aaa1906ffa "tst-tlsmod%",
>     b=0x55aaa1940fed "tst-tls-manydynamic73mod", c=10)
>     at ../sysdeps/x86_64/multiarch/strncmp-avx2_w.c:11
> 11        if (n1 != n2) asm("hlt");

I'll check that input thanks!

One thing, your check has some false positives as all that matters is
n1 / n2 have
same zero/non-zero status or same sign.
>
> --
> Andreas Schwab, schwab@linux-m68k.org
> GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
> "And now for something completely different."