Regressions on trunk at revision 204540 vs revision 204536

[H.J. Lu ia32 Core 2/i7]

New failures:
FAIL: gfortran.dg/pr50875.f90  -O  (internal compiler error)
FAIL: gfortran.dg/pr50875.f90  -O  (test for excess errors)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (internal compiler error)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -fomit-frame-pointer -funroll-loops  (internal compiler error)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -g  (internal compiler error)
FAIL: gfortran.dg/typebound_operator_9.f03  -O3 -g  (test for excess errors)
FAIL: gfortran.fortran-torture/execute/forall_1.f90,  -O3 -g  (internal compiler error)

New passes: