Re: amd64 bitops fix for -Os

[Alexandre Oliva]

On Oct 29, 2005, Alexandre Oliva <aoliva@xxxxxxxxxx> wrote:

> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=171672

> In teh find_first_zero_bit case, this comes at pretty much no cost,
> since we already test size for non-zero, but we used to do that
> adjusting it from bits to words; changing it should have no visible
> effect on performance.

I forgot to mention that this approach to fix the problem was
suggested by Al Viro.  Sorry, Al.

-- 
Alexandre Oliva         http://www.lsd.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer   aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist  oliva@{lsd.ic.unicamp.br, gnu.org}
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