public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "oleg.endo@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/49468] SH Target: inefficient integer abs code
Date: Sun, 25 Sep 2011 12:53:00 -0000 [thread overview]
Message-ID: <bug-49468-4-WZRtUEH9EE@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-49468-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49468
Oleg Endo <oleg.endo@t-online.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #24625|0 |1
is obsolete| |
--- Comment #7 from Oleg Endo <oleg.endo@t-online.de> 2011-09-25 12:48:24 UTC ---
Created attachment 25360
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25360
Proposed patch
The last version of the patch fails the test
gcc.c-torture/execute/arith-rand-ll.c for -m2a-single -mb and multiple
optimization levels with the following error:
internal compiler error: in change_address_1, at emit-rtl.c:1994
The attached version fixes some of the failures but still fails the test above
with -m2a-single -mb -O2. Other optimization levels work fine.
The problem is caused by the define_insn_and_split "*abssi2". It even fails if
the "*abssi2" splits into nothing but a simple register copy (movdi) or
comparison insn.
I'm now testing the patch without the DI abs parts and will submit it if passes
without new failures.
Cheers,
Oleg
next prev parent reply other threads:[~2011-09-25 12:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-19 15:15 [Bug target/49468] New: " oleg.endo@t-online.de
2011-06-19 15:30 ` [Bug target/49468] " oleg.endo@t-online.de
2011-06-19 15:49 ` oleg.endo@t-online.de
2011-06-22 22:38 ` kkojima at gcc dot gnu.org
2011-06-26 20:49 ` oleg.endo@t-online.de
2011-06-27 6:40 ` kkojima at gcc dot gnu.org
2011-06-29 1:37 ` oleg.endo@t-online.de
2011-09-25 12:53 ` oleg.endo@t-online.de [this message]
2012-02-26 23:38 ` olegendo at gcc dot gnu.org
2012-02-28 8:44 ` olegendo at gcc dot gnu.org
2012-02-29 23:23 ` kkojima at gcc dot gnu.org
2012-03-14 23:10 ` olegendo at gcc dot gnu.org
2013-12-05 19:26 ` olegendo 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-49468-4-WZRtUEH9EE@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).