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Re: Backport AVX256 load/store split patches to gcc 4.6 for performance boost on latest AMD/Intel hardware.
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: harsha dot jagasia at amd dot com
- Cc: gcc-patches at gcc dot gnu dot org, hubicka at ucw dot cz, ubizjak at gmail dot com, hongjiu dot lu at intel dot com
- Date: Mon, 20 Jun 2011 10:01:17 -0700
- Subject: Re: Backport AVX256 load/store split patches to gcc 4.6 for performance boost on latest AMD/Intel hardware.
- References: <20110620165806.6911.15686.sendpatchset@gccpike4.amd.com>
On Mon, Jun 20, 2011 at 9:58 AM, <harsha.jagasia@amd.com> wrote:
> Is it ok to backport patches, with Changelogs below, already in trunk to gcc
> 4.6? These patches are for AVX-256bit load store splitting. These patches
> make significant performance difference >=3% to several CPU2006 and
> Polyhedron benchmarks on latest AMD and Intel hardware. If ok, I will post
> backported patches for commit approval.
>
> AMD plans to submit additional patches on AVX-256 load/store splitting to
> trunk. We will send additional backport requests for those later once they
> are accepted/comitted to trunk.
>
Since we will make some changes on trunk, I would prefer to to do
the backport after trunk change is finished.
Thanks.
--
H.J.