[Bug target/48781] gcc generate movdqa instructions on unaligned memory address when using -mtune=native -march=native

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48781

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-04-26 
22:10:59 UTC ---
The alignment of __uint128_t is 16byte.  I think you are invoking undefined
behavior by using a data type which increases the alignment.