[Bug target/57830] fold_builtin_memory_op expands memcpy without regard to -Os

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57830

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

           What    |Removed                     |Added
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          Component|tree-optimization           |target

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Expand should have converted the assignment back to memcpy due to tuning.  If
the expand is not converting it back to memcpy/memmove, then it is a bug either
in the AVR target or expand.