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From: Robert A Duff <bobduff@world.std.com>
Subject: Re: Apex vs GNAT on solaris
Date: 1999/12/08
Date: 1999-12-08T00:00:00+00:00	[thread overview]
Message-ID: <wccemcxv5vv.fsf@world.std.com> (raw)
In-Reply-To: 82lcr0$tsg$1@nnrp1.deja.com

reason67@my-deja.com writes:

> BTW: Both compilers were set at no optimization.

Which is why the run-time measurements are completely meaningless.  If
you care about run-time efficiency, then you want to know how well the
compiler can do, not how poorly it can do if you turn off optimization.
The only thing that makes sense is to compare compilers at their highest
optimization levels.

The only reasons to turn optimization off are to make compile time
faster, to make debugging easier, or because you think the optimizer is
buggy.  But none of those things were measured!

- Bob




  reply	other threads:[~1999-12-08  0:00 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-12-07  0:00 Apex vs GNAT on solaris reason67
1999-12-07  0:00 ` reason67
1999-12-07  0:00 ` reason67
1999-12-07  0:00 ` Robert Dewar
1999-12-07  0:00   ` Roger Racine
1999-12-07  0:00     ` Jean-Pierre Rosen
1999-12-07  0:00     ` David Starner
1999-12-08  0:00       ` Robert Dewar
1999-12-07  0:00     ` Larry Kilgallen
1999-12-07  0:00     ` Samuel T. Harris
1999-12-08  0:00     ` Robert Dewar
1999-12-08  0:00       ` Roger Racine
1999-12-08  0:00         ` Larry Kilgallen
1999-12-08  0:00           ` Roger Racine
1999-12-08  0:00             ` Larry Kilgallen
1999-12-08  0:00             ` tmoran
1999-12-09  0:00         ` Robert Dewar
1999-12-09  0:00           ` Roger Racine
1999-12-09  0:00             ` Mike Silva
1999-12-10  0:00               ` Robert Dewar
1999-12-09  0:00             ` Larry Kilgallen
1999-12-10  0:00               ` Robert Dewar
1999-12-16  0:00             ` Stefan Skoglund
1999-12-08  0:00       ` Robert A Duff
1999-12-08  0:00     ` Ted Dennison
1999-12-07  0:00   ` reason67
1999-12-08  0:00     ` Robert Dewar
1999-12-08  0:00       ` reason67
1999-12-08  0:00         ` Robert A Duff [this message]
1999-12-08  0:00         ` Robert Dewar
1999-12-08  0:00         ` Larry Kilgallen
1999-12-07  0:00 ` reason67
1999-12-07  0:00 ` reason67
1999-12-07  0:00 ` reason67
1999-12-07  0:00   ` Robert Dewar
1999-12-07  0:00     ` reason67
1999-12-08  0:00       ` Robert Dewar
1999-12-08  0:00         ` reason67
1999-12-07  0:00     ` Vladimir Olensky
1999-12-07  0:00       ` Vladimir Olensky
1999-12-09  0:00       ` Geoff Bull
1999-12-09  0:00         ` Vladimir Olensky
1999-12-09  0:00         ` Vladimir Olensky
1999-12-10  0:00           ` Vladimir Olensky
1999-12-07  0:00 ` reason67
1999-12-07  0:00 ` reason67
1999-12-07  0:00   ` Robert Dewar
1999-12-07  0:00     ` reason67
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