Regressions on trunk at revision 193117 vs revision 193112

[H.J. Lu Intel64 Core 2/i7]

New failures:

New passes:
FAIL: gcc.dg/tree-ssa/loop-38.c scan-tree-dump cunrolli "Found better loop bound 10"
FAIL: gcc.dg/tree-ssa/loop-38.c scan-tree-dump cunrolli "Found better loop bound 10"
FAIL: gcc.dg/tree-ssa/loop-38.c scan-tree-dump cunrolli "Loop 1 iterates at most 10 times"
FAIL: gcc.dg/tree-ssa/loop-38.c scan-tree-dump cunrolli "Loop 1 iterates at most 10 times"