Regressions on trunk at revision 173221 vs revision 173219

[H.J. Lu Intel64]

New failures:

New passes:
FAIL: gcc.dg/guality/vla-1.c  -O2 -flto  line 17 sizeof (a) == 6
FAIL: gcc.dg/guality/vla-1.c  -O2 -flto -flto-partition=none  line 17 sizeof (a) == 6
FAIL: gfortran.dg/interface_37.f90  -O   (test for errors, line 16)
FAIL: gfortran.dg/interface_37.f90  -O   (test for errors, line 16)
FAIL: gfortran.dg/interface_37.f90  -O  (test for excess errors)
FAIL: gfortran.dg/interface_37.f90  -O  (test for excess errors)