http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30318
--- Comment #18 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-06-20 12:05:35 UTC --- Marc - I have now pushed all my refactorings into VRP, including the PLUS_EXPR handling. The basic idea was to build on simple building blocks, a "complete" union/intersect implementation and "complete" range-range operations. Mixed range/anti-range and anti-range/anti-range operations are now decomposed into several sub-operations and the results are unioned back together. Can you adjust your patch with the double-double_int arithmetic stuff to that fact? Thx.
