Regressions on trunk at revision 199684 vs revision 199679

[H.J. Lu Intel64]

New failures:
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

New passes:
FAIL: gcc.dg/tree-ssa/attr-alias.c (test for excess errors)
FAIL: gcc.dg/tree-ssa/attr-alias.c (test for excess errors)