Re: -mlongcall test

[Andrew Johnson <anj@aps.anl.gov>]

Hi Janet,

Janet Anderson wrote:
> The base and example application builds are in
> /home/phoebus/JBA/longcallTest.
It seems to have taken me almost 5 months to actually try those out, but I 
have done so now so you can delete anything you were saving for me under 
that directory.
>>> ppc603  ppc604
>>> ------  ------
>>> 1767450 1766846 - size of example when base and example
>>>                   were built without the -mlongcall cflag.
    2674832           size of above when loaded into memory

>>> 2096915 2096527 - size of example when base and example
>>>                   were built with the -mlongcall cflag.
    2853056           size of above when loaded into memory

Thus loaded in memory the -mlongcall binaries for a ppc603 take about 7% 
more RAM than their equivalent without that flag.  This isn't as bad as 
the 20% differences between the file sizes, but I think it's probably 
still worth keeping two different targets for different RAM sizes - the 
larger memory footprint will have a subtle extra effect on execution speed 
because of more cache misses with the larger object code.
- Andrew
--
There are 10 types of people in the world:
Those who understand binary, and those who don't.