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From: Keith.Rollin@f20.n226.z1.FIDONET.ORG (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Increment (Was Re: Pascal deficiency)?
Message-ID: <647.2783DF06@busker.fidonet.org>
Date: 28 Dec 90 08:45:49 GMT
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Reply-To: keith@Apple.COM

In article <1530@carol.fwi.uva.nl> freek@fwi.uva.nl (Freek Wiedijk) writes:
>keith@Apple.COM (Keith Rollin) writes:
>>                  Another interesting thing is that empty() is
>>reduced to a simple RTS. Should an optimizing compiler recognize
>>that this is a null procedure, and remove the call to it altogether?
>
>What happens if you declare empty static and compile the program with the
>flag -finline-functions?  I do not have gcc for MPW, so I cannot try it
>myself.  I am very curious what will be left.

Pretty slick! The program:

static void empty(int i) {};
main() { int i = 1; empty(++i); };

reduces to:

Module:            Flags=$00=(Local Code)  Module="main%"(1) Segment="Main"(2)
00000000: 4E56 0000      'NV..'            LINK       A6,#$0000
00000004: 4E5E           'N^'              UNLK       A6
00000006: 4E75           'Nu'              RTS        

Now...I wonder why the LINK/UNLK are still there. I also used -mbg off, so
it's not for debugging purposes...

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