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AW: [avr-gcc-list] How often does your code not fit?

From: Haase Bjoern (PT-BEU/EMT) *
Subject: AW: [avr-gcc-list] How often does your code not fit?
Date: Mon, 18 Jul 2005 15:45:33 +0200

Hi, Eric,

Welcome back!
You are slightly exaggerating :-) . I have been mainly been studying work of 
Richard Henderson that had been addressing 64-Bit integer performance problems 
for the intel architectures. This actually happens to be exactly the same 
issue, we are having for 16 bit and 32 bit variables. Presently I am still 
working hard understanding basic gcc issues :-). ... It's not *this* easy.

Information for those intending to work with 4.0.x and avrstudio. I have posted 
a patch solving the dwarf2 ice problem. IIRC it is still not in CVS. The patch 
is posted in the gcc-patches mailing list somewhere around mid may 2005.

Anyway, I'll inform you as soon as I am having news.



-----Ursprüngliche Nachricht-----
Von: address@hidden [mailto:address@hidden Im Auftrag von E. Weddington
Gesendet: Montag, 18. Juli 2005 15:16
An: Ben L. Titzer
Cc: AVR GCC List; e; address@hidden
Betreff: Re: [avr-gcc-list] How often does your code not fit?

Ben L. Titzer wrote:

> Hello everyone,
> I am wondering about the space optimizations in avr-gcc. How many of  
> you have had problems fitting your code into the device that you are  
> working on, and what do you normally do? Is it a large enough problem  
> that you have had to hack your source code, or turn on compiler  
> optimizations, or do linker tricks?
> I was wondering because I am interested in studying the effect of  
> different optimization passes in avr-gcc on the code size of the  
> program.
Also you might want to talk to Björn Haase (CC'd). He's been working on 
the AVR port of GCC and specifically working on various new 
optimizations for the AVR port for the 4.x series.


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