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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 22 Apr 2021 10:08:57 -0700
Message-ID: <CAMe9rOpF7gUfRZ6irUevHOXoHPGeXB_Q2_2Uww+3qmj_3WD=EA@mail.gmail.com>
Subject: Re: [PATCH] x86: tst-cpu-features-supports.c: Update AMX check
To: Joseph Myers <joseph@codesourcery.com>, 
 Libc-stable Mailing List <libc-stable@sourceware.org>
Cc: GNU C Library <libc-alpha@sourceware.org>
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On Thu, Apr 22, 2021 at 10:08 AM Joseph Myers <joseph@codesourcery.com> wrote:
>
> On Wed, 21 Apr 2021, H.J. Lu via Libc-alpha wrote:
>
> > On Wed, Apr 21, 2021 at 3:45 PM Joseph Myers <joseph@codesourcery.com> wrote:
> > >
> > > With GCC mainline, I'm seeing glibc testsuite build failures for x86_64
> > > and x86:
> > >
> > > ../sysdeps/x86/tst-cpu-features-supports.c: In function 'do_test':
> > > ../sysdeps/x86/tst-cpu-features-supports.c:62:3: error: parameter to builtin not valid: amx_bf16
> > >    62 |   fails += CHECK_SUPPORTS (amx_bf16, AMX_BF16);
> > >       |   ^~~~~
> > > ../sysdeps/x86/tst-cpu-features-supports.c:63:3: error: parameter to builtin not valid: amx_int8
> > >    63 |   fails += CHECK_SUPPORTS (amx_int8, AMX_INT8);
> > >       |   ^~~~~
> > > ../sysdeps/x86/tst-cpu-features-supports.c:64:3: error: parameter to builtin not valid: amx_tile
> > >    64 |   fails += CHECK_SUPPORTS (amx_tile, AMX_TILE);
> > >       |   ^~~~~
> > >
> > > https://sourceware.org/pipermail/libc-testresults/2021q2/007827.html
> > >
> > > The code in question is inside a conditional
> > >
> > > #if __GNUC_PREREQ (11, 1)
> > >
> > > so wasn't compiled until the GCC version number was increased to 12 (and
> > > would probably start failing with GCC 11 branch as soon as 11.1 is
> > > released).
> > >
> >
> > Try this.
>
> That patch fixes the build failures for me.
>
> (Note: the fix ought to go on 2.33 branch as well, otherwise that branch
> will fail to build the testsuite with GCC 11.1 release.)

I will check it into master branch and backport it to 2.33 branch.

Thanks.

-- 
H.J.