Regressions on trunk at revision 230648 vs revision 230638

[H.J. Lu ia32 Core i7]

New failures:

New passes:
FAIL: c-c++-common/attr-simd-3.c  -std=gnu++11  (test for errors, line 5)
FAIL: c-c++-common/attr-simd-3.c  -std=gnu++14  (test for errors, line 5)
FAIL: c-c++-common/attr-simd-3.c  -std=gnu++98  (test for errors, line 5)