[Bug rtl-optimization/50567] Reload pass generates sub-optimal spill code for registers in presence of a vec_concat insn

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50567

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-29 
15:11:55 UTC ---
I think this is because we prefer to do GR-sse register moves throuhg memory.
-mtune=core2 should avoid this I think.