Re: [PATCH 01/31] bitops: add parity functions

Joe Perches
2016-03-29T02:56:14Z

On Tue, 2016-03-29 at 10:27 +0800, Zeng Zhaoxiu wrote:
> 在 2016年03月28日 14:51, Sam Ravnborg 写道:
[]
> > Defining these as static inlines in asm-generic prevent an
> > architecture
> > from selecting between a more optimal asm version or the generic version
> > at run-time.
> > sparc would benefit from this as only some sparc chips supports popc.
> > See how this is done for hweight*
> >
> > Sam
> Thanks. I will try.

You might also try to describe in any commit message
and perhaps the internal documentation why using gcc's
__builtin_parity isn't appropriate.