Regressions on trunk at revision 190104 vs revision 190100

[H.J. Lu Intel64]

New failures:
FAIL: gfortran.dg/index_2.f90  -O3 -g  (test for excess errors)
FAIL: gfortran.dg/negative_unit.f  -O1  (test for excess errors)
FAIL: gfortran.dg/read_float_3.f90  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/unpack_zerosize_1.f90  -O3 -fomit-frame-pointer  (test for excess errors)

New passes:
FAIL: gfortran.dg/array_alloc_2.f90  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/cshift_bounds_4.f90  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/g77/xformat.f  -O  (test for excess errors)
FAIL: gfortran.dg/intrinsic_actual_4.f90  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/nested_modules_2.f90  -O3 -g  (test for excess errors)
FAIL: gfortran.dg/pr53217.f90  -O  (test for excess errors)
FAIL: gfortran.dg/proc_decl_18.f90  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/product_init_expr.f03  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/read_float_1.f90  -Os  (test for excess errors)
FAIL: gfortran.dg/write_padding.f90  -O0  (test for excess errors)
FAIL: gfortran.dg/zero_sized_5.f90  -O0  (test for excess errors)
FAIL: libgomp.fortran/pr27916-2.f90  -O2  (test for excess errors)