8/16bit oddities on avr-gcc

[Michael Kukat]

Hi,

Andrew Haley schrieb:
> (And, before you ask, I have no idea what the xx = 0; xx = 1; lines
> are for!)

I think that is this voodoo thing Eljay mentioned :) Okay, it starts ctr 
with 2, so it's logically to optimize the first 2 loop iterations away 
by doing it this way. Is there a new -funroll-loops-a-bit option? :)

> gcc 4.2 might do better than 4.1.

Hm okay, if i remember the improvement from 3.3 to 4.1, maybe i should 
give it a try over the weekend.

Thanks so far, at least we know now, that this is a common issue, which 
only appears on 8bit CPUs.

...Michael