Regressions on trunk at revision 188972 vs revision 188931

[H.J. Lu ia32 Core 2/i7]

New failures:

New passes:
FAIL: libgomp.c++/for-7.C  -O0  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -O1  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -O2  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -O3 -g  (test for excess errors)
FAIL: libgomp.c++/for-7.C  -Os  (test for excess errors)