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Re: c/8681: Generates unneeded test
- From: Raimar Falke <rf13 at inf dot tu-dresden dot de>
- To: nobody at gcc dot gnu dot org
- Cc: gcc-prs at gcc dot gnu dot org,
- Date: 2 Dec 2002 16:26:04 -0000
- Subject: Re: c/8681: Generates unneeded test
- Reply-to: Raimar Falke <rf13 at inf dot tu-dresden dot de>
The following reply was made to PR c/8681; it has been noted by GNATS.
From: Raimar Falke <rf13@inf.tu-dresden.de>
To: Christian Ehrhardt <ehrhardt@mathematik.uni-ulm.de>
Cc: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
nobody@gcc.gnu.org
Subject: Re: c/8681: Generates unneeded test
Date: Mon, 2 Dec 2002 17:18:05 +0100
On Mon, Dec 02, 2002 at 03:44:04PM +0100, Christian Ehrhardt wrote:
>
> http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8681
> Did this ever work? It DOESN'T for me with: 2.95.2, 3.2, 3.2.1, 3.3.
If you mean with "worked" that it had omitted the test in the past: I
don't know. It is a new issue for me which I think gcc should
optimize.
I have also tested intel compiler 6.0 and 7.0 and both don't do the
optimization. The sun compiler (Sun WorkShop 6 update 2 C 5.3) however
will do the optimization if -depend is given.
> This should be reclassified as change request. I can confirm that
> the compiler doesn't do an optimization that looks valid to me.
Raimar
--
email: rf13@inf.tu-dresden.de
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