X-pop3-spooler: POP3MAIL 2.1.0 b 4 980420 -bs-
Message-Id: <199809030016.TAA12871@indy1.indy.net>
From: "Steve Snyder" <ssnyder AT indy DOT net>
To: "PGCC Mailing List" <beastium-list AT Desk DOT nl>
Date: Wed, 02 Sep 1998 20:13:29 -0500
Reply-To: "Steve Snyder" <ssnyder AT indy DOT net>
X-Mailer: PMMail 1.96a For OS/2
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Subject: Optimizations when compiling the compiler.
Sender: Marc Lehmann <pcg AT goof DOT com>
Status: RO
X-Status: A
Content-Length: 725
Lines: 19

In a recent message it was noted that the most dramatic improvements to
Pentium-optimized code require the -O5 and -O6 switches.  This make me
wonder:  what optimization setting were used in testing the pgcc 1.1
release candidates?

I spend a *lot* of time running my C compiler, so naturally I want it to
run as fast as possible.  Also, naturally, I want the compiler to be
stable.  I get enough instability in my own code.  :-)

So... how risky is it for me to compile pgcc 1.1a with itself, using the
-O5 or -O6 optimization switches?  That is, how much would I be reducing 
the dependability of compiler, as opposed to building it with itself at an 
optimization level of -O3 or -O4?

Thanks.


***** Steve Snyder *****