From: Hongyu Wang <wwwhhhyyy333@gmail.com>
To: Marc Glisse <marc.glisse@inria.fr>
Cc: Hongyu Wang <hongyu.wang@intel.com>,
gcc-patches@gcc.gnu.org, hongtao.liu@intel.com
Subject: Re: [PATCH] Optimize VEC_PERM_EXPR with same permutation index and operation [PR98167]
Date: Thu, 17 Nov 2022 14:05:12 +0800 [thread overview]
Message-ID: <CA+OydWkVqo_kHr4N=BOz-kMiS7y=Sjs3wHvDnxquptge_LktVw@mail.gmail.com> (raw)
In-Reply-To: <c1956a81-56b2-89f7-7419-b2f35d2eadc9@inria.fr>
> I assume the "full permutation" condition is to avoid performing some
> extra operations that would raise exception flags. If so, are there
> conditions (-fno-trapping-math?) where the transformation would be safe
> with arbitrary shuffles?
Yes, that could be an alternative choice with -fno-trapping-math on
arbitrary shuffles. I may have a follow-up patch about this after the
ICE is fixed. Thanks.
> --
> Marc Glisse
prev parent reply other threads:[~2022-11-17 6:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-04 0:04 Hongyu Wang
2022-11-04 6:43 ` Prathamesh Kulkarni
2022-11-08 14:37 ` Richard Biener
2022-11-10 2:22 ` Hongyu Wang
2022-11-10 8:56 ` Richard Biener
2022-11-10 14:27 ` Hongyu Wang
2022-11-14 14:53 ` Richard Biener
2022-11-16 15:25 ` Tamar Christina
2022-11-16 15:29 ` Richard Biener
2022-11-16 15:30 ` Richard Biener
2022-11-16 15:34 ` Tamar Christina
2022-11-16 15:37 ` Jakub Jelinek
2022-11-16 15:40 ` Tamar Christina
2022-11-16 15:41 ` Jakub Jelinek
2022-11-16 19:21 ` Marc Glisse
2022-11-17 6:05 ` Hongyu Wang [this message]
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