Regressions on trunk at revision 206470 vs revision 206463

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: g++.dg/cilk-plus/CK/catch_exc.cc  -g -O2 -fcilkplus execution test
FAIL: g++.dg/cilk-plus/CK/catch_exc.cc  -g -O3 -fcilkplus execution test
FAIL: g++.dg/cilk-plus/CK/catch_exc.cc  -O1 -fcilkplus execution test
FAIL: g++.dg/cilk-plus/CK/catch_exc.cc  -O2 -fcilkplus execution test
FAIL: g++.dg/cilk-plus/CK/catch_exc.cc  -O3 -fcilkplus execution test