Regressions on trunk at revision 189888 vs revision 189878

[H.J. Lu x32]

New failures:
FAIL: gcc.dg/pr46521.c (internal compiler error)
FAIL: gcc.dg/pr46521.c (test for excess errors)

New passes:
FAIL: gcc.target/i386/pr45352-2.c (internal compiler error)
FAIL: gcc.target/i386/pr45352-2.c (test for excess errors)
FAIL: gcc.target/i386/pr45913.c (internal compiler error)
FAIL: gcc.target/i386/pr45913.c (test for excess errors)
FAIL: gfortran.dg/contiguous_1.f90  -O   (test for errors, line 132)
FAIL: gfortran.dg/contiguous_1.f90  -O   (test for errors, line 172)
FAIL: gfortran.dg/contiguous_1.f90  -O  (test for excess errors)
FAIL: gfortran.dg/proc_ptr_32.f90  -O   (test for errors, line 9)
FAIL: gfortran.dg/proc_ptr_32.f90  -O  (test for excess errors)