tree-ssa-dom.c (record_equivalences_from_incoming_edge): Rework slightly to...

tree-ssa-dom.c (record_equivalences_from_incoming_edge): Rework slightly to avoid creating and folding useless trees.

        * tree-ssa-dom.c (record_equivalences_from_incoming_edge): Rework
	slightly to avoid creating and folding useless trees.  Simplify
        slightly by restricting to INTEGER_CSTs and using int_fits_type_p.

From-SVN: r197060