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Re: [PATCH, i386] Enable option -mprefer-avx256 added for Intel AVX512 configuration

On Thu, Sep 21, 2017 at 11:25 AM, Shalnov, Sergey
<sergey.shalnov@intel.com> wrote:
> gcc/ChangeLog:
>
> 2017-09-21  Sergey Shalnov  <Sergey.Shalnov@intel.com>
>
>         * config/i386/i386.c (flag_opts): Added a macro for new option
>         (ix86_preferred_simd_mode): Prefer 256-bit AVX modes when the flag
>         -mprefer-avx256 is on
>         (ix86_autovectorize_vector_sizes): Avoid 512-bit vectors if the flag
>         -mprefer-avx256 is on
>         * config/i386/i386.opt: Doc added for -mprefer-avx256
>         * doc/invoke.texi: Doc added for -mprefer-avx256
>
> gcc/testsuite/ChangeLog:
>
> 2017-09-21  Sergey Shalnov  <Sergey.Shalnov@intel.com>
>
>         * g++.dg/ext/pr57362.C (__attribute__): Check for
>         __attribute__((target("prefer-avx256"))) works
>         * gcc.target/i386/avx512f-prefer.c: New test. Avoid 512bit
>         registers if -mprefer-avx256 used

Sorry, this ChangeLog entry is still not OK.

Uros.
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