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From: Robert A Duff <bobduff@world.std.com>
Subject: Re: Apex vs GNAT on solaris
Date: 1999/12/08
Message-ID: <wccd7shv5mz.fsf@world.std.com>#1/1
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Sender: bobduff@world.std.com (Robert A Duff)
References: <82hiuj$74o$1@nnrp1.deja.com> <82hnll$ahu$1@nnrp1.deja.com>
 <384cfdb3.691883075@newsnew.draper.com> <82ku6s$jhi$1@nnrp1.deja.com>
Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 1999-12-08T00:00:00+00:00
List-Id: <comp.lang.ada>

Robert Dewar <dewar@gnat.com> writes:

> In article <384cfdb3.691883075@newsnew.draper.com>,
>   rracine@myremarq.com (Roger Racine) wrote:

> > Others will assume that the default options are the best
> > options.
> 
> They will assume wrong, there is no "best options", there is
> only the appropriate options for your particular use.

Right!  If there were a "best" value for any given option, then the
compiler writer would be foolish to have the option.  Instead, the
compiler should just always do what is best.  Options are costly -- they
can greatly increase the difficulty of testing, for example.

The reason options exist is that there are tradeoffs -- sometimes you
want fast compile times, sometimes you're willing to put up with slow
compile times in order to get better efficiency.  Neither one is
"better".

- Bob