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From: kaleb@mars.Jpl.Nasa.Gov (Kaleb Keithley)
Newsgroups: comp.windows.x,comp.compilers,comp.sys.sun
Subject: compiler optimization level
Keywords: C,question
Message-ID: <1990Mar22.020441.1722@esegue.segue.boston.ma.us>
Date: 22 Mar 90 02:04:41 GMT
Sender: compilers-sender@esegue.segue.boston.ma.us
Reply-To: kaleb@mars.Jpl.Nasa.Gov (Kaleb Keithley)
Followup-To: comp.sys.sun
Organization: Jet Propulsion Laboratory, Pasadena, CA.
Lines: 20
Approved: compilers@esegue.segue.boston.ma.us

Here's our setup:  Sun 4, SunOS 4.0.3, X11R4, fixes 1 through 6 (I know, four
and five are Apollo and IBM, and six is xterm.)

I'm about to try compiling the Xsun Server with optimization level 3 and/or 4.
The default is 2 on Sun 4s.  Does anyone have any thoughts or suggestions.

I'm relatively new (9 months) to Suns, is there any reason why I should not
do this?

What, if any, performance change can I expect?  Performance is already quite
good on this platform (we have two 4/260s and a 4/370; ten and sixteen MIPS
respectively.)

If there is enough interest/response, I'll summarize.
kaleb@mars.jpl.nasa.gov            Jet Propeller Labs
Kaleb Keithley
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