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Re: [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets

From: Uros Bizjak <ubizjak at gmail dot com>
To: Igor Zamyatin <izamyatin at gmail dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Mon, 18 Feb 2013 20:34:10 +0100
Subject: Re: [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets
References: <CAKdSQZ=hffSFDQ2ZE8dpxS7tQPrY3iBmjmHCzX_xSfqLBXC-yw@mail.gmail.com>

On Mon, Feb 18, 2013 at 7:44 PM, Igor Zamyatin <izamyatin@gmail.com> wrote:

> This small change enables FP reassociation for AVX2 processors. This
> gives ~+1.5% in performance geomean for spec2006FP tests.
>
> Bootstrapped/regtested on x86_64-linux, ok for trunk?
>
>
> 2013-02-14  Igor Zamyatin  <igor.zamyatin@intel.com>
>
>         * config/i386/i386.c (initial_ix86_tune_features): Turn on fp
>         reassociation for avx2 targets.

OK (it is a tuning patch).

Thanks,
Uros.

Follow-Ups:
- Re: [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets
  - From: Kirill Yukhin

References:
- [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets
  - From: Igor Zamyatin

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