Archived test results for 4.7.0 for most processors with C++ results have:

XPASS: g++.dg/tree-ssa/pr43411.C scan-tree-dump-not optimized "OBJ_TYPE_REF"

The only failures I could find were for ia64-linux and ia64-hpux.  This
patch changes the xfail so it only applies to ia64-*-*.  OK for trunk?