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From: krowitz@RICHTER.MIT.EDU (David Krowitz)
Newsgroups: comp.sys.apollo
Subject: Re:  cc -g makes programs run faster?
Message-ID: <9009181421.AA22513@richter.mit.edu>
Date: 18 Sep 90 14:21:42 GMT
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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). It's mere speculation, but maybe your
"cpu,3000" isn't getting through to the compiler in the first case?
You can use the Apollo specific switch "exp" to get an expanded assembly
code listing which should show you whether the code generated is using
68020/68881 floating point and address modes, or whether it's using
calls to the floating point library and default 68000 address modes.


 -- David Krowitz

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