[Bug string/18858] _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64

[carlos at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18858

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |carlos at redhat dot com

--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to H.J. Lu from comment #4)
> (In reply to Carlos O'Donell from comment #3)
> > (In reply to joseph@codesourcery.com from comment #1)
> > > I think _HAVE_STRING_ARCH_mempcpy is expected to be defined only when 
> > > mempcpy is an alternative entry point to memcpy, as otherwise using 
> > > mempcpy will increase cache usage and so inlining the expansion in terms 
> > > of memcpy is expected to be more efficient.
> > 
> > I think this needs to be backed up by some more performance measurements by
> > Intel.
> 
> Did we have inline mempcpy performance measurements on Intel machines when
> the change was made?

Yes, Ondrej ran some numbers:
https://sourceware.org/ml/libc-alpha/2015-05/msg00575.html

-- 
You are receiving this mail because:
You are on the CC list for the bug.