From: Jeff Law <law@redhat.com>
To: Richard Guenther <richard.guenther@gmail.com>
Cc: Tom Tromey <tromey@redhat.com>, gcc-patches <gcc-patches@gcc.gnu.org>
Subject: Re: RFA: New pass to delete unexecutable paths in the CFG
Date: Mon, 07 Nov 2011 19:09:00 -0000 [thread overview]
Message-ID: <4EB82B89.7020208@redhat.com> (raw)
In-Reply-To: <CAFiYyc0_yrN7spUSS2RgM2TtjOQDbmXNTXyOwio+mxK89NRw9A@mail.gmail.com>
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On 11/07/11 08:49, Richard Guenther wrote:
>
> OTOH I'm not sure we want to change a possible trap (And thus
> program abort) to a fallthru ...
I think this is the big question we need to answer; there's other
places were we rely upon ISO's standards to enable optimization. But
this one just feels a little different... Or maybe I'm shy after the
kernel security problem caused by relying on dereferenced pointer not
being null.
I could easily see not enabling the switch by default for a period of
time, or enabling the optimization by default along with some kind of
warning.
Jeff
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next prev parent reply other threads:[~2011-11-07 19:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-07 9:58 Jeff Law
2011-11-07 10:19 ` Jakub Jelinek
2011-11-07 10:21 ` Richard Guenther
2011-11-07 10:30 ` Richard Guenther
2011-11-07 19:20 ` Jeff Law
2011-11-07 16:14 ` Jeff Law
2011-11-07 16:30 ` Richard Guenther
2011-11-07 16:57 ` Kai Tietz
2011-11-07 19:03 ` Jeff Law
2011-11-08 11:50 ` Paolo Bonzini
2011-11-08 19:48 ` Jeff Law
2011-11-08 20:38 ` Paolo Bonzini
2011-11-08 20:59 ` Jeff Law
2011-11-09 8:37 ` Paolo Bonzini
2011-11-09 18:11 ` Jeff Law
2011-11-09 18:12 ` Jakub Jelinek
2011-11-09 22:45 ` Paolo Bonzini
2011-11-10 19:27 ` Jeff Law
2011-11-07 19:14 ` Jeff Law
2011-11-07 14:16 ` Tom Tromey
2011-11-07 15:54 ` Jeff Law
2011-11-07 15:54 ` Richard Guenther
2011-11-07 19:09 ` Jeff Law [this message]
2011-11-07 22:34 ` Richard Guenther
2011-11-08 20:02 ` Jeff Law
2011-11-09 9:50 ` Richard Guenther
2011-11-09 17:43 ` Jeff Law
2011-11-07 15:55 ` Tom Tromey
2011-11-07 17:01 ` Paolo Bonzini
2011-11-15 7:52 ` RFA: disable -fdelete-null-pointer-checks for Java Jeff Law
2011-11-07 19:05 ` RFA: New pass to delete unexecutable paths in the CFG Jeff Law
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