Regressions on trunk at revision 271865 vs revision 271853

[H.J. Lu (Intel64 Core i7)]

New failures:
FAIL: gcc.dg/guality/pr90716.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  -DPREVENT_OPTIMIZATION line 23 j + 1 == 9
FAIL: gcc.dg/guality/pr90716.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  -DPREVENT_OPTIMIZATION line 23 j + 1 == 9
FAIL: gfortran.dg/pointer_array_10.f90   -Os  execution test
FAIL: gfortran.dg/pointer_array_10.f90   -Os  execution test
FAIL: gfortran.dg/subref_array_pointer_2.f90   -Os  execution test
FAIL: gfortran.dg/subref_array_pointer_2.f90   -Os  execution test

New passes: