tree-ssa-loop-ivopts.c (computation_cost): Start register numbering at LAST_VIRTUAL_REGISTER+1 to avoid possibly using...

* tree-ssa-loop-ivopts.c (computation_cost): Start register
numbering at LAST_VIRTUAL_REGISTER+1 to avoid possibly using hard
registers in unsupported ways.
* expmed.c (init_expmed): Likewise.

From-SVN: r95373