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Re: [PATCH x86_64][BZ #20139] Don't allow configure with not supporting AVX512 assembler w/o --disable-avx512.
- From: Andrew Senkevich <andrew dot n dot senkevich at gmail dot com>
- To: Florian Weimer <fweimer at redhat dot com>, libc-alpha <libc-alpha at sourceware dot org>
- Date: Mon, 27 Jun 2016 21:15:25 +0300
- Subject: Re: [PATCH x86_64][BZ #20139] Don't allow configure with not supporting AVX512 assembler w/o --disable-avx512.
- Authentication-results: sourceware.org; auth=none
- References: <CAMXFM3tJkhW78PPe4=FUhbm=8HoOY4iouSqXxLObA0GEMTxoZA at mail dot gmail dot com> <5ecbe6ab-79a9-7bf4-909b-3b61d0877559 at redhat dot com>
2016-06-27 21:03 GMT+03:00 Florian Weimer <fweimer@redhat.com>:
> On 06/27/2016 07:40 PM, Andrew Senkevich wrote:
>>
>> To fix BZ #20139 we need don't let to configure with not supporting
>> AVX512 assembler w/o --disable-avx512.
>
>
> There is an existing configure check for HAVE_AVX512_ASM_SUPPORT. Why isn't
> it sufficient?
Where are bug https://sourceware.org/bugzilla/show_bug.cgi?id=20139
It is the case when HAVE_AVX512_ASM_SUPPORT is undefined and Glibc is
built for AVX512 hardware.
--
WBR,
Andrew