[PATCH, spu] add libgcc functions __multi3, __udivmodti4, etc

[Segher Boessenkool]

> I changed the function as following:
>
> static
> unsigned int count_leading_zeros(UDItype x)
> {
>     int leading;
>     leading = W_TYPE_SIZE;
>     if (x > ((UDItype)1 << W_TYPE_SIZE))

 >=, not >

>      {
>        x = (UDItype)x >> W_TYPE_SIZE;

x is already type UDItype, no need for the cast.

>        leading = 0;
>      }
>     return si_clz(x) + leading;
> }

Btw, I think it's more efficient to take the clz of both halves
always, and work from that.  But you'll have to benchmark that,
don't take my word for it.


Segher