From: Michael Matz <matz@suse.de> To: Eric Botcazou <ebotcazou@adacore.com> Cc: Ian Lance Taylor <iant@google.com>, Richard Kenner <kenner@vlsi1.ultra.nyu.edu>, richard.guenther@gmail.com, gcc-patches@gcc.gnu.org Subject: Re: [PATCH] Fix optimization regression in constant folder Date: Thu, 04 Oct 2007 05:20:00 -0000 [thread overview] Message-ID: <Pine.LNX.4.64.0710040711020.23011@wotan.suse.de> (raw) In-Reply-To: <200710031754.22494.ebotcazou@adacore.com> Hi, On Wed, 3 Oct 2007, Eric Botcazou wrote: > > > OK, so TYPE_IGNORE_OVERFLOWS + TYPE_OVERFLOW_WRAPS for sizetypes? > > > > That makes sense to me. > > Agreed. > > Next question: independently of the underlying type of not? If you determined, that yes you indeed want that behaviour of your type X, then yes, independend of the other properties like signedness (of course if the combination makes sense, which it does here). > For all languages minus Ada sizetypes are unsigned so > TYPE_IGNORE_OVERFLOWS+TYPE_OVERFLOW_WRAPS is kind of natural. For Ada, > sizetypes are signed (Richard explained why) so > TYPE_IGNORE_OVERFLOWS+TYPE_OVERFLOW_WRAPS is not natural. That shouldn't bother us. It might of course be that we have some transformations which explicitely look for unsignedness, whereas you also want them to apply to your sizetypes. We simply have to find and fix them. Ciao, Michael.
next prev parent reply other threads:[~2007-10-04 5:20 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-17 14:35 Eric Botcazou
2007-09-17 14:45 ` Richard Guenther
2007-09-17 14:56 ` Eric Botcazou
2007-09-17 15:13 ` Richard Guenther
2007-09-18 11:12 ` Eric Botcazou
2007-09-18 11:22 ` Richard Guenther
2007-09-18 13:17 ` Richard Kenner
2007-09-19 11:33 ` Eric Botcazou
2007-09-19 14:40 ` Richard Guenther
2007-09-19 14:50 ` Richard Kenner
2007-09-19 15:50 ` Eric Botcazou
2007-09-29 10:27 ` Eric Botcazou
2007-09-29 14:59 ` Richard Guenther
2007-09-29 15:12 ` Eric Botcazou
2007-09-29 15:38 ` Richard Guenther
2007-09-29 17:46 ` Richard Guenther
2007-09-29 18:43 ` Eric Botcazou
2007-09-29 20:52 ` Richard Guenther
2007-09-30 14:38 ` Eric Botcazou
2007-09-30 16:01 ` Eric Botcazou
2007-09-30 16:03 ` Richard Guenther
2007-09-30 16:36 ` Eric Botcazou
2007-09-30 17:37 ` Richard Guenther
2007-09-30 18:53 ` Eric Botcazou
2007-09-30 17:59 ` Richard Kenner
2007-09-30 18:38 ` Richard Guenther
2007-09-30 21:16 ` Richard Kenner
2007-09-30 22:10 ` Eric Botcazou
[not found] ` <m3r6kf3gyx.fsf@localhost.localdomain>
[not found] ` <200710010127.59677.ebotcazou@adacore.com>
2007-10-01 0:10 ` Ian Lance Taylor
2007-10-01 0:51 ` Richard Kenner
2007-10-01 1:54 ` Michael Matz
2007-10-01 2:53 ` Richard Kenner
2007-10-01 3:25 ` Michael Matz
2007-10-01 3:40 ` Richard Kenner
2007-10-01 9:12 ` Richard Guenther
2007-10-01 12:29 ` Richard Kenner
2007-10-01 12:40 ` Richard Guenther
2007-10-01 13:07 ` Eric Botcazou
2007-10-01 13:15 ` Richard Kenner
2007-10-01 14:15 ` Richard Guenther
2007-10-01 14:23 ` Richard Kenner
2007-10-01 14:29 ` Richard Guenther
2007-10-01 14:35 ` Richard Kenner
2007-10-01 17:51 ` Ian Lance Taylor
2007-10-01 19:32 ` Richard Kenner
2007-10-01 19:51 ` Ian Lance Taylor
2007-10-01 20:28 ` Richard Kenner
2007-10-02 13:58 ` Michael Matz
2007-10-03 6:41 ` Eric Botcazou
2007-10-03 7:00 ` Ian Lance Taylor
2007-10-03 7:10 ` Eric Botcazou
2007-10-03 14:18 ` Ian Lance Taylor
2007-10-03 15:53 ` Eric Botcazou
2007-10-04 5:20 ` Michael Matz [this message]
2007-10-10 17:31 ` Mark Mitchell
2007-10-10 22:43 ` Richard Kenner
2007-10-11 0:40 ` Mark Mitchell
2007-10-11 1:02 ` Richard Kenner
2007-10-11 15:06 ` Michael Matz
2007-10-11 15:10 ` Richard Guenther
2007-10-11 15:55 ` Michael Matz
2007-10-11 15:57 ` Richard Guenther
2007-10-11 16:02 ` Richard Kenner
2007-10-11 15:59 ` Richard Kenner
2007-10-11 16:02 ` Richard Guenther
2007-10-11 16:08 ` Richard Kenner
2007-10-11 16:14 ` Richard Guenther
2007-10-11 16:37 ` Richard Kenner
2007-10-11 16:44 ` Richard Guenther
2007-10-11 16:50 ` Richard Kenner
2007-10-11 15:32 ` Richard Kenner
2007-10-11 16:03 ` Michael Matz
2007-10-11 16:06 ` Richard Guenther
2007-10-11 16:19 ` Richard Kenner
2007-10-11 16:25 ` Michael Matz
2007-10-11 16:12 ` Richard Kenner
2007-10-11 16:38 ` Michael Matz
2007-10-11 16:47 ` Richard Kenner
2007-10-11 17:04 ` Michael Matz
2007-10-11 17:17 ` Ian Lance Taylor
2007-10-11 18:41 ` Michael Matz
[not found] ` <10710111850.AA27 912@vlsi1.ultra.nyu.edu>
[not found] ` <10710111850.AA27 912@vlsi1.ultra.nyu.edu>
[not found] ` <10710111850.AA27 912@vlsi1.ultra.nyu.edu>
[not found] ` <10710111850.AA27 912@vlsi1.ultra.nyu.edu>
[not found] ` <10710111850.AA27 912@vlsi1.ultra.nyu.edu>
[not found] ` <10710111850.AA27 912@vlsi1.ultra.nyu.edu>
2007-10-11 18:45 ` Richard Kenner
2007-10-11 19:10 ` Michael Matz
2007-10-11 19:17 ` Richard Kenner
2007-10-11 19:30 ` Michael Matz
2007-10-11 20:06 ` Richard Kenner
2007-10-11 21:24 ` Ian Lance Taylor
2007-10-12 2:36 ` Richard Kenner
2007-10-12 4:40 ` Ian Lance Taylor
2007-10-12 4:56 ` Mark Mitchell
2007-10-12 12:30 ` Richard Kenner
2007-10-12 17:48 ` Mark Mitchell
2007-10-12 18:08 ` Richard Kenner
2007-10-12 18:37 ` Mark Mitchell
2007-10-12 18:51 ` Richard Kenner
2007-10-12 20:13 ` Richard Guenther
2007-10-14 11:09 ` Eric Botcazou
2007-10-12 11:42 ` Richard Kenner
2007-10-14 10:31 ` Eric Botcazou
2007-10-14 11:24 ` Richard Guenther
2007-10-14 11:58 ` Eric Botcazou
2007-10-14 12:16 ` Richard Kenner
2007-10-14 13:29 ` Richard Guenther
2007-10-15 2:12 ` Richard Kenner
2007-10-15 7:33 ` Michael Matz
2007-10-15 11:36 ` Richard Kenner
2007-10-15 13:27 ` Richard Guenther
2007-10-15 13:28 ` Richard Kenner
2007-10-14 16:07 ` Ian Lance Taylor
2007-10-14 16:27 ` Richard Guenther
2007-10-15 3:26 ` Richard Kenner
2007-10-15 9:12 ` Richard Guenther
2007-10-15 11:41 ` Richard Kenner
2007-10-15 13:15 ` Richard Guenther
2007-10-15 13:17 ` Richard Kenner
2007-10-15 3:29 ` Richard Kenner
2007-10-15 2:17 ` Richard Kenner
2007-10-15 5:21 ` Ian Lance Taylor
2007-10-15 11:01 ` Richard Kenner
2007-10-11 17:21 ` Richard Kenner
2007-10-11 16:16 ` Richard Kenner
2007-10-11 16:51 ` Michael Matz
2007-10-11 16:57 ` Richard Kenner
2007-10-11 17:06 ` Richard Guenther
2007-10-11 17:24 ` Richard Kenner
2007-10-11 17:31 ` Michael Matz
2007-10-11 17:54 ` Richard Kenner
2007-10-12 8:20 ` Richard Guenther
2007-10-12 11:47 ` Paolo Bonzini
2007-10-12 12:44 ` Richard Kenner
2007-10-12 12:49 ` Richard Guenther
2007-10-11 15:57 ` Mark Mitchell
2007-10-11 16:01 ` Richard Kenner
2007-10-11 16:03 ` Richard Guenther
2007-10-11 16:16 ` Richard Kenner
2007-10-11 16:11 ` Mark Mitchell
2007-10-11 16:29 ` Richard Kenner
2007-10-01 6:07 ` Eric Botcazou
2007-10-01 6:07 ` Eric Botcazou
2007-10-01 8:58 ` Richard Guenther
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