Regressions on master at commit r16-6466 vs commit r16-6462 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r16-6466 vs commit r16-6462 on Linux/x86_64
New failures:
FAIL: libgomp.fortran/appendix-a/a.2.1.f90   -O0  execution test
FAIL: libgomp.fortran/depend-4.f90   -O  execution test
FAIL: libgomp.fortran/depend-4.f90   -O  execution test

New passes:
FAIL: libgomp.fortran/appendix-a/a.2.1.f90   -O2  execution test
FAIL: libgomp.fortran/appendix-a/a.2.1.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/appendix-a/a.2.1.f90   -Os  execution test
FAIL: libgomp.fortran/appendix-a/a.2.1.f90   -Os  execution test