Use of vector instructions in memmov/memset expanding

Jan Hubicka
Wed Sep 28 13:33:00 GMT 2011

> > Do you know glibc version numbers when
> > the optimized string functions was introduced?
> Afaik, it's 2.13.
> I also compared my implementation to 2.13.

I wonder if we can assume that most of GCC 4.7 based systems will be glibc 2.13
based, too.  I would tend to say that yes and thus would suggest to tamn down
inlining that is no longer profitable on newer glibcs with a note in

(I worry about the tables in i386.c deciding what strategy to use for block of
given size. This is more or less unrelated to the actual patch)


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