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Re: [avr-gcc-list] GCC 3.0.2 unsigned int bug?

From: Joerg Wunsch
Subject: Re: [avr-gcc-list] GCC 3.0.2 unsigned int bug?
Date: Tue, 18 Dec 2001 16:41:58 +0100
User-agent: Mutt/1.2.5i

As Chris Elmquist wrote:

> well, it seems there is a radical difference in the size and complexity 
> of the code it produces then.  ie,

Yep, you're right.

> I suppose it would be more correct to declare 'd' a type "register"
> above to ensure it always stays that way.

register and volatile are basically mutually exclusive.

> But it has been an interesting exercise for me to see how GCC (w/
> -Os) deals with this simple case on the AVR.

It's a general gcc feature, so other architectures should rather
experience similar behaviour.

J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/

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