Regressions on trunk at revision 182322 vs revision 182271

[H.J. Lu x32]

New failures:

New passes:
FAIL: gfortran.fortran-torture/execute/entry_4.f90 execution,  -O2 
FAIL: gfortran.fortran-torture/execute/entry_4.f90 execution,  -O2 -fbounds-check 
FAIL: gfortran.fortran-torture/execute/entry_4.f90 execution,  -O2 -fomit-frame-pointer -finline-functions 
FAIL: gfortran.fortran-torture/execute/entry_4.f90 execution,  -O2 -fomit-frame-pointer -finline-functions -funroll-loops 
FAIL: gfortran.fortran-torture/execute/entry_4.f90 execution,  -O3 -g 
FAIL: gfortran.fortran-torture/execute/entry_4.f90 execution, -O2 -ftree-vectorize -msse2