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From: jeffh@HyperMail.apple.com (Jeff Holcomb)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Gnu C Compiler for MPW Unchained!
Message-ID: <11544@goofy.Apple.COM>
Date: 17 Dec 90 17:37:10 GMT
Sender: usenet@Apple.COM
Organization: Apple Computer, Inc.
Lines: 42
References:<11494@goofy.Apple.COM> <1990Dec13.104024.6150@chinet.chi.il.us> <11520@goofy.Apple.COM> <1990Dec16.111012.4314@actrix.gen.nz>

In article <1990Dec16.111012.4314@actrix.gen.nz> 
Bruce.Hoult@bbs.actrix.gen.nz writes:
> Call me confused, but shouldn't the 2nd and 3rd generation versions of cpp
> and cc1 be byte-for-byte identical? (as would all subsequent generations)

Normally they should match, in fact generation 2 and 3 cpp do.  cc1 on the 
other hand is different.  We ran into a few problems getting certain 
sections of the code through MPW C (it totally lost it).

The best way we found was to not compile those sections (mainly loop 
optimization) when building generation 1.  Generation 2 is then built 
without the loop optimization, though it does compile the source code that 
was left out previously.  Generation 3 is then built with the loop 
optimization.  The difference in code size is about 9k between stage 2 and 
3.

If you build a generation 4, it does match exactly.


___________________________________________________________________________
Jeff Holcomb                 Internet: jeffh@HyperMail.apple.com
                            AppleLink: jeffh@HyperMail.apple.com@INTERNET#
                                GEnie: A2.JEFFH
Contracting for Apple ATG       Voice: (408) 974-0841

         My opinions are not necessarily those of Apple.  :-P
___________________________________________________________________________
electively, at any time they feel like. They can
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Using Prodigy is exactly like using a Unix system and turning off
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If I connect my PC to some other computer, I want to be very sure
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There is no way to log in from the outside. You can, if you wish,
right now, do ftp to my PC. But you need the password. I have no
idea how good the security is but at least it exists.

Doug McDonald