Regressions on trunk at revision 181894 vs revision 181801

[H.J. Lu Intel64 LTO/FDO]

New failures:

New passes:
FAIL: gcc.c-torture/execute/920501-1.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.c-torture/execute/920501-1.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: libgomp.graphite/force-parallel-6.c execution test
WARNING: program timed out.