From: Mats Weber <matsw@mail.com>
To: Harald.Schmidt@tomcat.de
Subject: Re: GNAT & GCC performace (bad news)
Date: 1999/12/03
Date: 1999-12-03T09:51:14+00:00 [thread overview]
Message-ID: <38479292.343828C4@mail.com> (raw)
In-Reply-To: B46CA6A1.2991%Harald.Schmidt@tomcat.de
The level of optimization is very important if you are using gcc, and
could very well account for your 50%. With -O0 (the default) gcc
generates easy to debug but quite inefficent code (look at the gcc
docs). You really have to use at least -O1 if you want your comparison
to be meaningful.
And you have to suppress checks in Ada to compare with C.
next prev parent reply other threads:[~1999-12-03 0:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-12-02 0:00 GNAT & GCC performace (bad news) Harald Schmidt
1999-12-02 0:00 ` Dmitriy Anisimkov
1999-12-02 0:00 ` nabbasi
1999-12-02 0:00 ` David Starner
1999-12-02 0:00 ` James E. Hopper
1999-12-03 0:00 ` Robert A Duff
1999-12-04 0:00 ` Robert Dewar
1999-12-04 0:00 ` Harald Schmidt
1999-12-02 0:00 ` Tucker Taft
1999-12-03 0:00 ` Geoff Bull
1999-12-03 0:00 ` Larry Kilgallen
1999-12-06 0:00 ` Robert Dewar
1999-12-06 0:00 ` Larry Kilgallen
1999-12-06 0:00 ` Robert A Duff
1999-12-07 0:00 ` Robert Dewar
1999-12-07 0:00 ` Tucker Taft
1999-12-08 0:00 ` Robert Dewar
1999-12-08 0:00 ` Ada2001
1999-12-09 0:00 ` Wes Groleau
1999-12-10 0:00 ` Robert Dewar
1999-12-10 0:00 ` Arthur Evans Jr
1999-12-11 0:00 ` Robert Dewar
1999-12-17 0:00 ` Richard Kenner
1999-12-07 0:00 ` Robert Dewar
1999-12-03 0:00 ` Geoff Bull
1999-12-03 0:00 ` Mats Weber [this message]
1999-12-03 0:00 ` Robert Dewar
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