From: Jeff Law <jeffreyalaw@gmail.com>
To: Richard Biener <rguenther@suse.de>, gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] tree-optimization/106081 - elide redundant permute
Date: Wed, 26 Jul 2023 10:18:13 -0600 [thread overview]
Message-ID: <a344a777-2ba0-e9db-3027-1c31efbe2f3b@gmail.com> (raw)
In-Reply-To: <20230726132804.E4E863854826@sourceware.org>
On 7/26/23 07:27, Richard Biener via Gcc-patches wrote:
> The following patch makes sure to elide a redundant permute that
> can be merged with existing splats represented as load permutations
> as we now do for non-grouped SLP loads. This is the last bit
> missing to fix this PR where the main fix was already done by
> r14-2117-gdd86a5a69cbda4
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
>
> PR tree-optimization/106081
> * tree-vect-slp.cc (vect_optimize_slp_pass::start_choosing_layouts):
> Assign layout -1 to splats.
>
> * gcc.dg/vect/pr106081.c: New testcase.
:-) Glad to see how easy this ended up being after the work you put
into pushing permutes around a couple years ago.
jeff
next parent reply other threads:[~2023-07-26 16:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230726132804.E4E863854826@sourceware.org>
2023-07-26 16:18 ` Jeff Law [this message]
2023-07-27 7:52 ` Richard Biener
2023-07-26 13:27 Richard Biener
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