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From: Adonis Ling <adonis0147@gmail.com>
To: Alexander Monakov <amonakov@ispras.ru>
Cc: gcc-help@gcc.gnu.org
Subject: Re: Why does different types of array subscript used to iterate affect auto vectorization
Date: Wed, 29 Jun 2022 00:00:15 +0800	[thread overview]
Message-ID: <CAG5qfXjq_ybTqXhUFPE=ARZFrfGwMPu2aD44_4w11b06v2PAYw@mail.gmail.com> (raw)
In-Reply-To: <f93aa7b-c15a-4c8d-17ea-8e7910a5f48f@ispras.ru>

On Tue, Jun 28, 2022 at 11:56 PM Alexander Monakov <amonakov@ispras.ru>
wrote:

> On Tue, 28 Jun 2022, Adonis Ling via Gcc-help wrote:
>
> > For the secondary issue, could I explain that Clang chooses to ignore it?
>
> That would be a compiler bug if it ignored that case; instead, it appears
> to
> emit a test that the index would not wrap around, branching to a
> non-vectorized
> variant if it would.
>
> Alexander
>

Ok, thanks a lot for your help!

-- 
Best regards,
Adonis

      reply	other threads:[~2022-06-28 16:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-27  2:47 Adonis Ling
2022-06-28 13:06 ` Alexander Monakov
2022-06-28 15:23   ` Adonis Ling
2022-06-28 15:38     ` Alexander Monakov
2022-06-28 15:47       ` Adonis Ling
2022-06-28 15:56         ` Alexander Monakov
2022-06-28 16:00           ` Adonis Ling [this message]

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