Regressions on trunk at revision 184181 vs revision 184177

[H.J. Lu ia32 Core 2/i7]

New failures:

New passes:
FAIL: g++.dg/tree-ssa/pr44706.C -std=gnu++11 scan-tree-dump-not fnsplit "Splitting function"
FAIL: g++.dg/tree-ssa/pr44706.C -std=gnu++98 scan-tree-dump-not fnsplit "Splitting function"