[Bug tree-optimization/55761] process_assignment assumes -1 can be created

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55761

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-12-20
     Ever Confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-20 15:55:22 UTC ---
Confirmed.  It already handles floats.  Easiest would be to add a
build_minus_one_cst helper in tree.c alongside build_one_cst.