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[Bug target/30315] optimize unsigned-add overflow test on x86 to use cpu flags from addl
- From: "pinskia at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Jun 2007 09:10:41 -0000
- Subject: [Bug target/30315] optimize unsigned-add overflow test on x86 to use cpu flags from addl
- References: <bug-30315-11337@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from pinskia at gmail dot com 2007-06-06 09:10 -------
Subject: Re: optimize unsigned-add overflow test on x86 to use cpu flags from
addl
> And BTW - wrapping is undefined operation.
One for signed integers for unsigned it is actually defined as
wrapping and the reporter used unsigned integers here.
Thanks,
Andrew Pinski
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30315