Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!oakhill!dover!digital!digital.sps.mot.com!chen
From: chen@digital.sps.mot.com (Jinfu Chen)
Newsgroups: comp.sys.apollo
Subject: Floating point (was Re:  cc -g makes programs run faster?)
Message-ID: <4ce36164.12c9a@digital.sps.mot.com>
Date: 18 Sep 90 20:46:04 GMT
References: <9009181421.AA22513@richter.mit.edu>
Sender: news@digital.sps.mot.com
Organization: Motorola, LICD, SPS, Mesa, AZ
Lines: 8

>A factor of three speed increase (for floating point code) is usually
>what I get from going from a " cpu any" (the default) to a "cpu 3000"
>(which turns on the use of inline floating point code and the 68020
>specific addressing modes). 

There is another compiler switch (cc 6.7 only) that can make floating point
code run faster, "-def BUILTINS" (or "-D_BUITLINS" in /bin/cc). With
combination of the "cpu 3000", performance can be sped up significantly.