Regressions on trunk at revision 255700 vs revision 255695

[H.J. Lu ia32 Core i7]

New failures:

New passes:
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-8.c scan-tree-dump-times graphite "5 loops carried no dependency" 1 (found 0 times)