Regressions on trunk at revision 182384 vs revision 182377

[H.J. Lu ia32]

New failures:

New passes:
FAIL: gcc.dg/tree-ssa/vrp47.c scan-tree-dump-times dom1 "x[^ ]* & y" 1
FAIL: libgomp.graphite/force-parallel-6.c execution test
WARNING: program timed out.