Regressions on trunk at revision 184192 vs revision 184152

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

New failures:
FAIL: gcc.dg/lto/trans-mem-1 c_lto_trans-mem-1_0.o-c_lto_trans-mem-1_1.o link, -flto -fgnu-tm
FAIL: gcc.dg/lto/trans-mem-2 c_lto_trans-mem-2_0.o-c_lto_trans-mem-2_1.o link, -flto -fgnu-tm
FAIL: gcc.dg/lto/trans-mem-4 c_lto_trans-mem-4_0.o-c_lto_trans-mem-4_1.o link, -flto -fgnu-tm

New passes:
FAIL: ext/profile/mutex_extensions_neg.cc (test for excess errors)
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"