[Bug target/54682] [SH] Replace constant loads with reg-reg copies

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54682

--- Comment #1 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-10-10 22:17:13 UTC ---
Another thing that could be considered are T bit stores via the 'movt' insn. 
For example:
   movt   r2       ! EX
   < something else; r2, T not modified>
   movt   r4       ! EX

can be turned into

   movt   r2       ! EX
   < something else; r2, T not modified>
   mov    r2,r4    ! MT