From: Segher Boessenkool <segher@kernel.crashing.org>
To: Michael Meissner <meissner@linux.ibm.com>,
gcc-patches@gcc.gnu.org, "Kewen.Lin" <linkw@linux.ibm.com>,
David Edelsohn <dje.gcc@gmail.com>,
Peter Bergner <bergner@linux.ibm.com>,
Will Schmidt <will_schmidt@vnet.ibm.com>
Subject: Re: [PATCH, V2] Do not enable -mblock-ops-vector-pair.
Date: Wed, 3 Aug 2022 15:11:05 -0500 [thread overview]
Message-ID: <20220803201105.GL25951@gate.crashing.org> (raw)
In-Reply-To: <Yt75yUWKIqoWI5kZ@toto.the-meissners.org>
Hi Mike,
On Mon, Jul 25, 2022 at 04:15:05PM -0400, Michael Meissner wrote:
> Testing has shown that using the load vector pair and store vector pair
> instructions for block moves has some performance issues on power10.
> This patch eliminates the code setting -mblock-ops-vector-pair. If you
> want to generate load vector pair and store vector pair instructions for
> block moves, you must use -mblock-ops-vector-pair.
>
> 2022-07-25 Michael Meissner <meissner@linux.ibm.com>
>
> gcc/
>
> * config/rs6000/rs6000.cc (rs6000_option_override_internal): Remove
> code setting -mblock-ops-vector-pair.
Okay for trunk (and any backports you may need). Thanks!
Segher
prev parent reply other threads:[~2022-08-03 20:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-25 20:15 Michael Meissner
2022-08-03 17:53 ` Ping: " Michael Meissner
2022-08-03 20:11 ` Segher Boessenkool [this message]
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