Regressions on trunk at revision 231094 vs revision 231070

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: gcc.dg/lto/alias-1 c_lto_alias-1_0.o-c_lto_alias-1_1.o execute  -O2 -flto 
FAIL: gcc.dg/lto/alias-1 c_lto_alias-1_0.o-c_lto_alias-1_1.o execute  -O2 -flto 
FAIL: gfortran.dg/bessel_6.f90   -O0  execution test
FAIL: gfortran.dg/bessel_6.f90   -O1  execution test
FAIL: gfortran.dg/bessel_6.f90   -O2  execution test
FAIL: gfortran.dg/bessel_6.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/bessel_6.f90   -O3 -g  execution test
FAIL: gfortran.dg/bessel_6.f90   -Os  execution test

New passes: