[Bug target/102294] memset expansion is sometimes slow for small sizes

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102294

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|middle-end                  |target
           Keywords|                            |missed-optimization
             Target|                            |x86_64

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With the target("no-sse") attribute, clang turns off SSE but uses a bunch of
64bit stores for the memset while GCC uses rep;stos.

I don't know which one is better on which processors. So someone will need to
do timings on that.  My bet is clang is tuned towards intel processors more
than say a generic AMD processor.