From: Toon Moene <moene@knmi.nl>
To: gcc@gcc.gnu.org
Subject: Re: contribution
Date: Fri, 12 Apr 2002 05:45:00 -0000 [thread overview]
Message-ID: <3CB6D448.45A4FE3E@knmi.nl> (raw)
Andi Kleen wrote:
> Alexey Starovoytov <starlex@eng.sun.com> writes:
>> For example SPECfp benchmark 172.mgrid showed 48% improvement
>> compiled with "-O2 -Ws,-O2,-fno-strict-aliasing" vs plain GCC
>> with "-O2"
> You could compiled 172.mgrid with gcc twice this way and it showed
> 48% improvement ? Or did you use a different compiler as backend?
> If you used gcc - is it known where that huge difference comes
> from?
A more important aspect of such a compiler would be idempotency.
I.e., is
gcc(gcc(x.c)) = gcc(x.c)
?
[ Ducks :-) ]
--
Toon Moene, KNMI, PO Box 201, 3730 AE De Bilt, The Netherlands.
Tel. +31302206443, Fax +31302210407, e-mail moene@knmi.nl
URL: http://www.knmi.nl/hirlam
next reply other threads:[~2002-04-12 12:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-12 5:45 Toon Moene [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-12-14 15:32 Contribution Mohamed Atef
2022-12-15 14:47 ` Contribution Jason Merrill
2022-12-15 16:42 ` Contribution Paul Smith
[not found] <CAOw3FZBzjtxEmbSMJDviD-td4bDM_mCMs9BQpk0SvK4EpR8N5g@mail.gmail.com>
2022-03-14 8:35 ` Fwd: Contribution farhad
2022-03-14 16:51 ` Contribution David Edelsohn
[not found] <3CB6D448.45A4FE3E@knmi.nl.suse.lists.egcs>
2002-04-12 5:54 ` contribution Andi Kleen
2002-04-12 5:58 ` contribution Toon Moene
[not found] <Pine.GSO.4.31.0204112030350.15026-101000@boojum.suse.lists.egcs-patches>
2002-04-12 1:28 ` contribution Andi Kleen
2002-04-12 11:42 ` contribution Alexey Starovoytov
2002-04-12 15:15 ` contribution Toon Moene
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