Regressions on trunk at revision 234958 vs revision 234953

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: libgomp.oacc-c/../libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1  -O2  execution test
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1  -O2  execution test