From: "Giovanni Bajo" <rasky@develer.com>
To: "Diego Novillo" <dnovillo@redhat.com>
Cc: "Paul Schlie" <schlie@comcast.net>, <gcc@gcc.gnu.org>
Subject: Re: potential simple loop optimization assistance strategy?
Date: Fri, 01 Jul 2005 18:26:00 -0000 [thread overview]
Message-ID: <02fe01c57e6a$4f907eb0$bf03030a@trilan> (raw)
In-Reply-To: <20050701182201.GA8567@topo.toronto.redhat.com>
Diego Novillo <dnovillo@redhat.com> wrote:
>> There has been some opposition in the past about allowing conditions in
>> asserts to be used as hints to the optimizers. In fact, I would like to
>> know if there is a current statement of purpose about this. That is,
would
>> there be strong oppositions to patches doing this?
>>
> VRP naturally takes advantage of assert (though not in some
> occassions involving unsigned types). Try:
>
> #include <assert.h>
>
> foo (int i)
> {
> assert (i != 0);
> if (i == 0)
> return 3;
>
> return 2;
> }
Agreed, but my point is whether we can do that when NDEBUG is defined.
--
Giovanni Bajo
next prev parent reply other threads:[~2005-07-01 18:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-01 15:51 Paul Schlie
2005-07-01 16:24 ` Gabriel Dos Reis
2005-07-01 17:15 ` Paul Schlie
2005-07-01 16:27 ` Devang Patel
2005-07-01 18:16 ` Giovanni Bajo
2005-07-01 18:22 ` Diego Novillo
2005-07-01 18:26 ` Giovanni Bajo [this message]
2005-07-01 19:42 ` Paul Schlie
[not found] ` <m3k6ka6po1.fsf@localhost.localdomain>
2005-07-02 9:18 ` Giovanni Bajo
2005-07-02 15:39 ` Michael Veksler
2005-07-02 18:58 ` Giovanni Bajo
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