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Re: [Committed 4.4] S/390: Re-add the mem->mem alternative for movqi

From: Andreas Krebbel <krebbel at linux dot vnet dot ibm dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Mon, 22 Feb 2010 16:03:19 +0100
Subject: Re: [Committed 4.4] S/390: Re-add the mem->mem alternative for movqi
References: <20100222114118.GA6247@bart> <84fc9c001002220411s4bff6644v85aa92d06e950f5f@mail.gmail.com>

Richard Guenther wrote:

On Mon, Feb 22, 2010 at 12:41 PM, Andreas Krebbel
<krebbel@linux.vnet.ibm.com> wrote:

Hi,

the patch http://gcc.gnu.org/ml/gcc-patches/2008-12/msg00519.html
accidently removed the mem->mem alternative in the movqi pattern.  The
attached patch adds it back since that caused a performance
regression.

Committed to 4.4. I'll commit it to 4.5/4.6 as soon as the branch opens.


Please commit to trunk as well - there's no reason to add a regression
from 4.4 at this stage.

Ok. Done.

-Andreas-

References:
- [Committed 4.4] S/390: Re-add the mem->mem alternative for movqi
  - From: Andreas Krebbel
- Re: [Committed 4.4] S/390: Re-add the mem->mem alternative for movqi
  - From: Richard Guenther

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