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Re: Request to backport two -mvzeroupper related patches to 4.6 branch
- From: Uros Bizjak <ubizjak at gmail dot com>
- To: "Fang, Changpeng" <Changpeng dot Fang at amd dot com>
- Cc: Richard Guenther <richard dot guenther at gmail dot com>, "Jagasia, Harsha" <harsha dot jagasia at amd dot com>, "H.J. Lu" <hjl dot tools at gmail dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, "hubicka at ucw dot cz" <hubicka at ucw dot cz>, "hongjiu dot lu at intel dot com" <hongjiu dot lu at intel dot com>
- Date: Sun, 3 Jul 2011 11:54:24 +0200
- Subject: Re: Request to backport two -mvzeroupper related patches to 4.6 branch
- References: <D4C76825A6780047854A11E93CDE84D005980DC720@SAUSEXMBP01.amd.com>
On Wed, Jun 29, 2011 at 2:58 AM, Fang, Changpeng <Changpeng.Fang@amd.com> wrote:
> Attached are two patches in gcc 4.7 trunk that we request to backport to 4.6 branch.
> There are all related to -mvzerupper
>
> 1)
> 0001-Save-the-initial-options-after-checking-vzeroupper.patch
> This patch fixes bug 47315, ICE: in extract_insn, at recog.c:2109 (unrecognizable insn) with -mvzeroupper and __attribute__((target("avx")))
>
> The patch was committed to trunk: 2011-05-23 ?H.J. Lu ?<hongjiu.lu@intel.com>
>
> The bug still exists in gcc 4.6.1. Backporting this patches would fix it.
>
> 2).
> 0001--config-i386-i386.c-ix86_reorg-Run-move_or_dele.patch
> This patch Run move_or_delete_vzeroupper first, and was committed to trunk:
> 2011-05-04 ?Uros Bizjak ?<ubizjak@gmail.com>
>
>
> Is It OK to commit to 4.6 branch?
This is OK for the branch.
Thanks,
Uros.