Regressions on trunk at revision 255420 vs revision 255398

[H.J. Lu x32]

New failures:

New passes:
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/reduction-cplx-dbl.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1  -O2  (test for excess errors)
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/reduction-cplx-flt.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1  -O2  (test for excess errors)