Regressions on trunk at revision 274631 vs revision 274561

[H.J. Lu (Intel64 AVX512)]

New failures:

New passes:
FAIL: gfortran.dg/intent_out_6.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error)
FAIL: gfortran.dg/intent_out_6.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: libgomp.fortran/appendix-a/a.28.5.f90   -O  (test for excess errors)
FAIL: libgomp.fortran/appendix-a/a.28.5.f90   -O  (test for excess errors)
FAIL: libgomp.fortran/appendix-a/a.28.5.f90   -O  (test for excess errors)