Regressions on trunk at revision 199825 vs revision 199820

[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:
ERROR: gcc.dg/tree-ssa/attr-alias.c: error executing dg-final: couldn't compile regular expression pattern: parentheses () not balanced
ERROR: gcc.dg/tree-ssa/attr-alias.c: error executing dg-final: couldn't compile regular expression pattern: parentheses () not balanced