On Wed, Nov 10, 2010 at 18:11, Number Cruncher <number.cruncher_at_[hidden]
> wrote:
> Just some observations from a concerned user with a temperamental Open MPI
> program (1.4.3):
>
> Fedora 14 (just released) includes glibc-2.12 which has optimized versions
> of memcpy, including a copy backward.
>
> http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=6fb8cbcb58a29fff73eb2101b34caa19a7f88eba
Is the memcpy-back code ever executed when called as memcpy()? I can't
imagine why it would be, but it would make plenty of sense to use it inside
memmove when the destination is at a higher address than the source.
Jed
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