compiler optimization level

kaleb@mars.Jpl.Nasa.Gov (Kaleb Keithley)
21 Mar 90 23:12:28 GMT

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compiler optimization level kaleb@mars.Jpl.Nasa.Gov (1990-03-21)
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From: kaleb@mars.Jpl.Nasa.Gov (Kaleb Keithley)
Newsgroups: comp.windows.x,comp.compilers,comp.sys.sun
Keywords: C,question
Date: 21 Mar 90 23:12:28 GMT
Organization: Jet Propulsion Laboratory, Pasadena, CA.
Followup-To: comp.sys.sun

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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