Re: [avr-gcc-list] How to (efficeiently !!!) test a bit within a multi-byte integer ?

[David Kelly]

On Nov 4, 2005, at 6:28 PM, Vincent Trouilliez wrote:

> Hmmm, it's interesting to see that 3.4.4 is that much better than
> 3.4.3 ! It means that avr-gcc is being actively improved, that's  
> rather
> encouraging, at this pace, in 2 or 3 years, it will rival or better  
> the
> most expensive commercial compilers :o) Long may live Unix/Linux and
> open source...

The biggest difference I found between 3.4.3 and 3.4.4 was the  
handling of switch statements. Couldn't say that one was  
significantly better than the other. Apparently I had already coded  
my 32 bit bit manipulation routines with unions and didn't see the  
resulting advanced optimization.

The little difference was 3.4.3 would often emit two returns at the  
end of a function where 3.4.4 only used one.

--
David Kelly N4HHE, address@hidden
========================================================================
Whom computers would destroy, they must first drive mad.