Regressions on trunk at revision 199606 vs revision 199599

[H.J. Lu Intel64 LTO/FDO]

New failures:
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++11  scan-tree-dump-times ivopts "PHI <[pb]" 1
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++11  scan-tree-dump-times ivopts "PHI <[pb]" 1
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++98  scan-tree-dump-times ivopts "PHI <[pb]" 1
FAIL: g++.dg/tree-ssa/ivopts-2.C -std=gnu++98  scan-tree-dump-times ivopts "PHI <[pb]" 1

New passes:
FAIL: boehm-gc.c/gctest.c -O2 execution test