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[Bug target/58779] [4.7/4.8/4.9 Regression] wrong code at -O1 on x86_64-linux-gnu
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 22 Oct 2013 06:10:29 +0000
- Subject: [Bug target/58779] [4.7/4.8/4.9 Regression] wrong code at -O1 on x86_64-linux-gnu
- Auto-submitted: auto-generated
- References: <bug-58779-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58779
UroÅ Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|x86_64-*-linux-gnu |x86
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
--- Comment #4 from UroÅ Bizjak <ubizjak at gmail dot com> ---
(In reply to Andrew Pinski from comment #3)
> Looks like this is a latent target bug as that change should not effect RTL
> at all (well the beginning expansion to RTL will be changed).
Yes, it is target problem with overflow patterns. MINUS overflow patterns are
invalid and should be removed.
I have a patch in testing.