public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "abel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/51505] [4.5/4.6/4.7 Regression] ICE: in form_sum, at reload.c:5349 with -O --param max-cse-insns=1
Date: Tue, 17 Jan 2012 16:13:00 -0000	[thread overview]
Message-ID: <bug-51505-4-nmMMgwV9SV@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-51505-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51505

--- Comment #5 from Andrey Belevantsev <abel at gcc dot gnu.org> 2012-01-17 16:05:26 UTC ---
Created attachment 26353
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26353
untested patch

I've tried to implement what Paolo suggests, the attached patch bootstraps but
otherwise untested.  The code is somewhat ugly as we need to purge all
registers reffered to from the note we delete also from EQ_USES list (or we get
verification errors).  I've never tried to dig deeply in DF core so sorry if
the patch is completely in the wrong direction.


  parent reply	other threads:[~2012-01-17 16:05 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-11 21:38 [Bug rtl-optimization/51505] New: " zsojka at seznam dot cz
2011-12-12 10:07 ` [Bug rtl-optimization/51505] " rguenth at gcc dot gnu.org
2011-12-13  8:36 ` jakub at gcc dot gnu.org
2011-12-13 11:04 ` ebotcazou at gcc dot gnu.org
2011-12-13 19:38 ` bonzini at gnu dot org
2011-12-14 20:53 ` jakub at gcc dot gnu.org
2012-01-17 16:13 ` abel at gcc dot gnu.org [this message]
2012-01-17 16:26 ` bonzini at gnu dot org
2012-01-18  9:17 ` abel at gcc dot gnu.org
2012-01-18  9:34 ` bonzini at gnu dot org
2012-01-18 10:06 ` abel at gcc dot gnu.org
2012-01-18 11:55 ` bonzini at gnu dot org
2012-01-18 12:26 ` abel at gcc dot gnu.org
2012-01-19  8:14 ` abel at gcc dot gnu.org
2012-01-19  8:59 ` [Bug rtl-optimization/51505] [4.5/4.6 " jakub at gcc dot gnu.org
2012-07-02 11:01 ` rguenth at gcc dot gnu.org
2013-04-12 16:17 ` [Bug rtl-optimization/51505] [4.6 " jakub at gcc dot gnu.org

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=bug-51505-4-nmMMgwV9SV@http.gcc.gnu.org/bugzilla/ \
    --to=gcc-bugzilla@gcc.gnu.org \
    --cc=gcc-bugs@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).