* tree-ssa-sccvn.c (visit_phi): Merge undefined values similar to VN_TOP. This seems to have regressed
FAIL: gcc.dg/tree-prof/time-profiler-2.c scan-ipa-dump-times profile "Read tp_first_run: 0" 2 FAIL: gcc.dg/tree-prof/time-profiler-2.c scan-ipa-dump-times profile "Read tp_first_run: 2" 1 FAIL: gcc.dg/tree-prof/time-profiler-2.c scan-ipa-dump-times profile "Read tp_first_run: 3" 1 - David
