[Bug rtl-optimization/70784] Merge multiple short stores of immediates into wider stores

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70784

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2016-04-25
           Assignee|unassigned at gcc dot gnu.org      |ktkachov at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from ktkachov at gcc dot gnu.org ---
I have an idea to implement this at the RTL level by finding consecutive stores
of immediates, creating a byte vector resulting from the merged immediate
values, and re-emitting it using a new wider (and shorter) sequence.