Re: [avr-libc-dev] [bug #12739] Gcc assumes that target libc provides ffs function

[E. Weddington]

Björn Haase wrote:

> Am Dienstag, 19. April 2005 21:41 schrieb E. Weddington:
>  
>
> > As a side note, I find it odd that the GCC test suite would require such
> > a non-ANSI standard function to be in the libc. But yeah, it's easy
> > enough to add.
> >
> > Eric
> >    
> I think the background is that for some targets there is a special instruction 
> for this purpose. Gcc has special support for a RTL instruction pattern that 
> is then matched to a built-in function. The test cases seem to be useful for 
> testing this feature.
>
>  

Ah, that makes sense now. Thanks for the explanation.

Eric