Regressions on trunk at revision 255596 vs revision 255571

[H.J. Lu]

New failures:
FAIL: libgomp.graphite/force-parallel-4.c scan-tree-dump-times graphite "2 loops carried no dependency" 1 (found 0 times)
FAIL: libgomp.graphite/force-parallel-4.c scan-tree-dump-times graphite "2 loops carried no dependency" 1 (found 0 times)
FAIL: libgomp.graphite/force-parallel-4.c scan-tree-dump-times optimized "loopfn.1" 4 (found 0 times)
FAIL: libgomp.graphite/force-parallel-4.c scan-tree-dump-times optimized "loopfn.1" 4 (found 0 times)
FAIL: libgomp.graphite/force-parallel-8.c scan-tree-dump-times graphite "5 loops carried no dependency" 1 (found 0 times)
FAIL: libgomp.graphite/force-parallel-8.c scan-tree-dump-times graphite "5 loops carried no dependency" 1 (found 0 times)

New passes:
FAIL: gcc.dg/vect/pr65947-14.c execution test
FAIL: gcc.dg/vect/pr65947-14.c execution test
FAIL: gcc.dg/vect/pr65947-14.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/pr65947-14.c -flto -ffat-lto-objects execution test