Regressions on native/master at commit r16-4003 vs commit r16-4000 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r16-4003 vs commit r16-4000 on Linux/x86_64
New failures:

New passes:
FAIL: gfortran.dg/pdt_48.f03   -O0  execution test
FAIL: gfortran.dg/pdt_48.f03   -O0  execution test
FAIL: gfortran.dg/pdt_48.f03   -O1  execution test
FAIL: gfortran.dg/pdt_48.f03   -O1  execution test
FAIL: gfortran.dg/pdt_48.f03   -O2  execution test
FAIL: gfortran.dg/pdt_48.f03   -O2  execution test
FAIL: gfortran.dg/pdt_48.f03   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/pdt_48.f03   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/pdt_48.f03   -O3 -g  execution test
FAIL: gfortran.dg/pdt_48.f03   -O3 -g  execution test
FAIL: gfortran.dg/pdt_48.f03   -Os  execution test
FAIL: gfortran.dg/pdt_48.f03   -Os  execution test