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From: "hpa at zytor dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/39252] Request new feature __builtin_not_reached();
Date: Sun, 01 Mar 2009 22:34:00 -0000 [thread overview]
Message-ID: <20090301223406.13602.qmail@sourceware.org> (raw)
In-Reply-To: <bug-39252-3556@http.gcc.gnu.org/bugzilla/>
------- Comment #9 from hpa at zytor dot com 2009-03-01 22:34 -------
> Though __builtin_not_reached () can be used to implement __builtin_assume (),
> so it may be more generally useful. if (i > 0) __builtin_not_reached (); will
> make GCC assume that i <= 0 on the other edge (of course we'd have to preserve
> this until some point to take advantage of it).
This seems rather elegant to me, although I'm happy to get this feature in any
form.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39252
next prev parent reply other threads:[~2009-03-01 22:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-19 20:42 [Bug c/39252] New: " hpa at zytor dot com
2009-02-19 20:46 ` [Bug c/39252] " hjl dot tools at gmail dot com
2009-02-19 20:51 ` hjl dot tools at gmail dot com
2009-02-19 21:50 ` pinskia at gcc dot gnu dot org
2009-02-19 21:58 ` hpa at zytor dot com
2009-02-19 22:13 ` hpa at zytor dot com
2009-02-19 22:14 ` pinskia at gcc dot gnu dot org
2009-02-19 22:21 ` hpa at zytor dot com
2009-02-19 23:02 ` jakub at gcc dot gnu dot org
2009-02-20 4:34 ` hpa at zytor dot com
2009-02-20 9:57 ` rguenth at gcc dot gnu dot org
2009-03-01 22:34 ` hpa at zytor dot com [this message]
2009-03-01 22:42 ` rguenth at gcc dot gnu dot org
2009-06-09 20:12 ` daney at gcc dot gnu dot org
2009-06-09 20:16 ` daney at gcc dot gnu dot org
2009-06-11 23:56 ` [Bug c/39252] Request new feature __builtin_unreachable () daney at gcc dot gnu dot org
2009-06-12 0:29 ` daney at gcc dot gnu dot org
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