From: Ian Lance Taylor <iant@google.com>
To: vijay nag <vijunag@gmail.com>
Cc: "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
Subject: Re: Crazy compiler optimization
Date: Wed, 09 Oct 2013 17:48:00 -0000 [thread overview]
Message-ID: <CAKOQZ8zdL39xus6FPhCPhw2NGCQHrUEAs5REpZfsjQiSwfwvVw@mail.gmail.com> (raw)
In-Reply-To: <CAKhyrx_1m0K868TVXg8kwo+EhbB+VFV0RkPqDHJ+FA8BV4w4Gw@mail.gmail.com>
On Wed, Oct 9, 2013 at 2:36 AM, vijay nag <vijunag@gmail.com> wrote:
>
> While compiler optimization should guarantee that the result of
> execution is same at all optimization levels,
That guarantee only holds for programs that fully conform to the
language standard and avoid all cases of undefined behaviour.
Ian
prev parent reply other threads:[~2013-10-09 17:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-09 9:36 vijay nag
2013-10-09 9:54 ` Jonathan Wakely
2013-10-09 10:02 ` vijay nag
2013-10-09 10:16 ` Jonathan Wakely
2013-10-09 15:40 ` David Brown
2013-10-09 10:18 ` Nicholas Mc Guire
2013-10-09 17:48 ` Ian Lance Taylor [this message]
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