Regressions on trunk at revision 231304 vs revision 231282

[H.J. Lu Intel64]

New failures:
FAIL: gcc.target/i386/pr68349.c (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-reinterpret1.C  -std=c++11  (test for errors, line 21)
FAIL: g++.dg/cpp0x/constexpr-reinterpret1.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-reinterpret1.C  -std=c++14  (test for errors, line 21)
FAIL: g++.dg/cpp0x/constexpr-reinterpret1.C  -std=c++14 (test for excess errors)

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