Regressions on trunk at revision 228368 vs revision 228327

[H.J. Lu ia32]

New failures:
FAIL: gfortran.dg/graphite/block-1.f90   -O   scan-tree-dump-times graphite "number of SCoPs: 1" 1
FAIL: gfortran.dg/graphite/block-2.f   -O   scan-tree-dump-times graphite "number of SCoPs: 2" 1

New passes:
FAIL: gcc.dg/lto/pr55113 c_lto_pr55113_0.o assemble,  -flto -fshort-double -O0  (internal compiler error)
FAIL: gfortran.dg/graphite/block-1.f90   -O  (internal compiler error)
FAIL: gfortran.dg/graphite/block-1.f90   -O  (test for excess errors)