[Bug target/49526] extra move instruction for smmul

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49526

--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-06-27 21:58:26 UTC ---
Confirmed.  Also need patterns for the accumulate and subtract variants, plus
rounding variants.