Regressions on trunk at revision 181468 vs revision 181466

[H.J. Lu Intel64]

New failures:
FAIL: gfortran.dg/literal_character_constant_1_x.F  -O0  execution test
FAIL: libgomp.fortran/recursion1.f90  -O0  execution test
FAIL: libgomp.fortran/recursion1.f90  -O3 -g  execution test

New passes:
FAIL: libgomp.fortran/recursion1.f90  -O2  execution test
FAIL: libgomp.fortran/recursion1.f90  -O3 -fomit-frame-pointer  execution test
FAIL: libgomp.fortran/recursion1.f90  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  execution test
FAIL: libgomp.fortran/recursion1.f90  -Os  execution test