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In-Reply-To: <20151110183905.GA26185@ibm-tiger.the-meissners.org>
References: <20151103202911.GA5304@ibm-tiger.the-meissners.org>	<20151109003335.GA17170@ibm-tiger.the-meissners.org>	<20151110183905.GA26185@ibm-tiger.the-meissners.org>
Date: Thu, 12 Nov 2015 20:39:00 -0000
Message-ID: <CAGWvnynDdSTNxTyhGB1nSkpbdnKqsby-q_P+xeWS0ozjXNXtrg@mail.gmail.com>
Subject: Re: [PATCH], Add power9 support to GCC, patch #8 (add integer multiply/add)
From: David Edelsohn <dje.gcc@gmail.com>
To: Michael Meissner <meissner@linux.vnet.ibm.com>, GCC Patches <gcc-patches@gcc.gnu.org>
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X-SW-Source: 2015-11/txt/msg01592.txt.bz2

On Tue, Nov 10, 2015 at 1:39 PM, Michael Meissner
<meissner@linux.vnet.ibm.com> wrote:
> This patch adds support for the MADDLD instruciton, which is a fused
> multiply/add instruction for integers.  At this time, it is for 64-bit
> multiplies only.  Eventually, we will restructure 128-bit multiply so that we
> can use the 64x64 + 64 high bit varients.
>
> I have bootstrapped a compiler with this change in and there were no
> regressions.  Is it ok to apply to the trunk?
>
> [gcc]
> 2015-11-10  Michael Meissner  <meissner@linux.vnet.ibm.com>
>
>         * config/rs6000/rs6000.h (TARGET_MADDLD): Add support for the ISA
>         3.0 integer multiply-add instruction.
>         * config/rs6000/rs6000.md (<u>mul<mode><dmode>3): Likewise.
>
> [gcc/testsuite]
> 2015-11-10  Michael Meissner  <meissner@linux.vnet.ibm.com>
>
>         * gcc.target/powerpc/maddld.c: New test.

Okay.

Thanks, David