Regressions on trunk at revision 178717 vs revision 178710

[H.J. Lu Intel64 LTO/FDO]

New failures:

New passes:
FAIL: gcc.dg/attr-invalid.c  (test for warnings, line 38)
FAIL: gcc.dg/attr-invalid.c  (test for warnings, line 38)
FAIL: gcc.dg/attr-invalid.c  (test for warnings, line 40)
FAIL: gcc.dg/attr-invalid.c  (test for warnings, line 40)