public inbox for
 help / color / mirror / Atom feed
From: Eric Botcazou <>
To: Richard Biener <>
Subject: Re: [PATCH] Fix wrong code generated by unroll-and-jam pass
Date: Thu, 06 Oct 2022 13:09:03 +0200	[thread overview]
Message-ID: <3695765.kQq0lBPeGt@fomalhaut> (raw)
In-Reply-To: <>

> I'm wondering if testing DR_IS_WRITE (dra) is enough here and whether
> the logic also applies to RAW and WAR.  So should it be either
> (DR_IS_WRITE (dra) || DR_IS_WRITE (drb)) or DR_IS_WRITE (dra) &&
> DR_IS_WRITE (drb) instead?

It's a self-dependence, i.e. dra == drb in the block.  Or do you mean for 
other dependence pairs in general?  For them, I think that the code does the 
proper filtering in adjust_unroll_factor, but I may be wrong of course.

Eric Botcazou

  reply	other threads:[~2022-10-06 11:09 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-05 15:36 Eric Botcazou
2022-10-06  8:21 ` Richard Biener
2022-10-06 11:09   ` Eric Botcazou [this message]
2022-10-06 12:21     ` Richard Biener

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=3695765.kQq0lBPeGt@fomalhaut \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).