Regressions on trunk at revision 181772 vs revision 181763

[H.J. Lu x32]

New failures:

New passes:
FAIL: gcc.dg/lto/trans-mem-1 c_lto_trans-mem-1_0.o-c_lto_trans-mem-1_1.o execute -flto -fgnu-tm
FAIL: libgomp.graphite/force-parallel-6.c execution test
WARNING: program timed out.