Regressions on master at commit r14-8777 vs commit r14-8751 on Linux/x86_64

[H.J. Lu]

Regressions on master at commit r14-8777 vs commit r14-8751 on Linux/x86_64
New failures:
FAIL: libgomp.fortran/non-rectangular-loop-1.f90   -O1  execution test
FAIL: libgomp.fortran/non-rectangular-loop-1.f90   -O1  execution test
FAIL: libgomp.fortran/non-rectangular-loop-1.f90   -O1  execution test
FAIL: libgomp.fortran/non-rectangular-loop-6.f90   -O1  execution test
FAIL: libgomp.fortran/non-rectangular-loop-6.f90   -O1  execution test
FAIL: libgomp.fortran/non-rectangular-loop-6.f90   -O1  execution test

New passes:
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps