public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
From: rth@gcc.gnu.org
To: dyatchkov@mcst.ru, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
	nobody@gcc.gnu.org
Subject: Re: optimization/8110: GCC 3.2: wrong code optimization with -O2
Date: Tue, 01 Oct 2002 14:19:00 -0000	[thread overview]
Message-ID: <20021001211901.7905.qmail@sources.redhat.com> (raw)

Synopsis: GCC 3.2: wrong code optimization with -O2

State-Changed-From-To: open->closed
State-Changed-By: rth
State-Changed-When: Tue Oct  1 14:19:00 2002
State-Changed-Why:
    The code in rtx_alloc is broken in spec2k.  Use the following.
    
    --- rtl.c.orig  Tue Oct  1 14:16:34 2002
    +++ rtl.c       Tue Oct  1 14:17:35 2002
    @@ -234,9 +234,7 @@
          one int, but we don't want to assume that and it isn't very portable
          anyway; this is.  */
     
    -  length = (sizeof (struct rtx_def) - sizeof (rtunion) - 1) / sizeof (int);
    -  for (; length >= 0; length--)
    -    ((int *) rt)[length] = 0;
    +  memset (rt, 0, sizeof (struct rtx_def) - sizeof (rtunion));
     
       PUT_CODE (rt, code);
     

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8110


             reply	other threads:[~2002-10-01 21:19 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-01 14:19 rth [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-10-01  9:26 dyatchkov

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=20021001211901.7905.qmail@sources.redhat.com \
    --to=rth@gcc.gnu.org \
    --cc=dyatchkov@mcst.ru \
    --cc=gcc-bugs@gcc.gnu.org \
    --cc=gcc-gnats@gcc.gnu.org \
    --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).