public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
From: Alan Modra <amodra@bigpond.net.au>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: Re: optimization/8328: powerpc64 ICE in reload
Date: Wed, 23 Oct 2002 22:36:00 -0000	[thread overview]
Message-ID: <20021024053601.15111.qmail@sources.redhat.com> (raw)

The following reply was made to PR optimization/8328; it has been noted by GNATS.

From: Alan Modra <amodra@bigpond.net.au>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: optimization/8328: powerpc64 ICE in reload
Date: Thu, 24 Oct 2002 15:05:03 +0930

 On Thu, Oct 24, 2002 at 11:18:38AM +0930, Alan Modra wrote:
 > holding a common subexpression, "(void *) &loc".  The first one being
 > that gcse incorrectly inserts code around a label.  We replace
 
 No, I was wrong about this.  The inserted code is actually correct, if
 not ideal.
 
 > Note how insn 383 has moved before "exit".  Also, I believe that gcse
 > should be using register DI 131 here as that is the one used in a
 > previous replacement of "(void *) &loc".
 
 And this one is related to this FIXME in gcse.c, I think:
 
 	      /* FIXME: If it turns out that the insn isn't deletable,
 		 then we may have unnecessarily extended register lifetimes
 		 and made things worse.  */
 
 So we're down to just the reload problem.
 
 -- 
 Alan Modra
 IBM OzLabs - Linux Technology Centre


             reply	other threads:[~2002-10-24  5:36 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-23 22:36 Alan Modra [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-10-23 18:56 Alan Modra

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:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

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

  git send-email \
    --in-reply-to=20021024053601.15111.qmail@sources.redhat.com \
    --to=amodra@bigpond.net.au \
    --cc=gcc-prs@gcc.gnu.org \
    --cc=nobody@gcc.gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* 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).