Regressions on trunk at revision 189718 vs revision 189715

[H.J. Lu x32]

New failures:

New passes:
FAIL: gcc.dg/tree-prof/update-loopch.c scan-tree-dump optimized "count:33332"
FAIL: gcc.dg/tree-ssa/pr18133-1.c scan-tree-dump-times optimized "fallthru" 3