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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Mon, 14 Feb 2022 11:30:23 -0800
Message-ID: <CAMe9rOprvuGM7SpD5KLjK4yzbK4v+gMVt6=z+QsdyeYZkD5AhQ@mail.gmail.com>
Subject: Re: [PATCH v3 5/7] x86: Optimize strcmp-avx2.S
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Noah Goldstein via Libc-alpha <libc-alpha@sourceware.org>
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On Mon, Feb 14, 2022 at 11:16 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> On Feb 14 2022, H.J. Lu wrote:
>
> > On Mon, Feb 14, 2022 at 6:10 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
> >>
> >> I'm seeing erroneous behaviour with this.  There are random cases of
> >> misbehaviour on build workers with AVX2, for example:
> >>
> >> https://build.opensuse.org/package/live_build_log/home:Andreas_Schwab:glibc/glibc:cross-riscv64/f/x86_64
> >>
> >> riscv64-suse-linux-gcc: error: unrecognized command-line option '-frounding-math'
> >> make[2]: *** [../o-iterator.mk:9: /home/abuild/rpmbuild/BUILD/glibc-2.35.9000.58.g7912236f4a/cc-base/time/tzset.o] Error 1
> >> make[2]: *** Waiting for unfinished jobs....
> >
> > How reproducible is it?
>
> 100%.
>

Can I reproduce it with scripts/build-many-glibcs.py on
any machine which uses strcmp-avx2.S?


-- 
H.J.