Regressions on trunk at revision 168558 vs revision 168553

[H.J. Lu Intel64-profiled]

New failures:
FAIL: gcc.dg/guality/pr43479.c  -O2 -flto -flto-partition=none  line 13 h == 9
FAIL: gcc.dg/guality/vla-2.c  -O3 -fomit-frame-pointer  line 25 sizeof (a) == 6 * sizeof (int)

New passes:
FAIL: gcc.dg/guality/vla-2.c  -O3 -g  line 25 sizeof (a) == 6 * sizeof (int)
FAIL: gfortran.dg/defined_operators_1.f90  -O   (test for errors, line 14)
FAIL: gfortran.dg/defined_operators_1.f90  -O   (test for errors, line 14)
FAIL: gfortran.dg/defined_operators_1.f90  -O  (test for excess errors)
FAIL: gfortran.dg/defined_operators_1.f90  -O  (test for excess errors)
FAIL: gfortran.dg/interface_33.f90  -O  (test for excess errors)
FAIL: gfortran.dg/interface_33.f90  -O  (test for excess errors)