Regressions on trunk at revision 182321 vs revision 182280

[H.J. Lu Intel64 Core 2/i7]

New failures:

New passes:
FAIL: gcc.target/i386/bmi2-mulx32-1a.c scan-assembler-times bmi2_umulsidi3_1 1
FAIL: gcc.target/i386/bmi2-mulx32-2a.c scan-assembler-times mulx[ \\t]+[^\n]* 1
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