[Bug target/59062] poor code generated at -Os (affecting all gcc versions): 10+ sec vs. 1 sec at -O0

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59062

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-10
          Component|tree-optimization           |target
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is a target specific tuning of expanding " c = b;" for -Os using "rep;
movsb" even for a small struct size.