Regressions on trunk at revision 272476 vs revision 272471

[H.J. Lu (ia32 -fpic)]

New failures:

New passes:
FAIL: g++.dg/vect/simd-3.cc  -std=c++14  scan-tree-dump-times vect "vectorized [1-3] loops" 2
FAIL: g++.dg/vect/simd-3.cc  -std=c++17  scan-tree-dump-times vect "vectorized [1-3] loops" 2
FAIL: g++.dg/vect/simd-3.cc  -std=c++98  scan-tree-dump-times vect "vectorized [1-3] loops" 2
FAIL: g++.dg/vect/simd-4.cc  -std=c++14  scan-tree-dump-times vect "vectorized [1-3] loops" 2
FAIL: g++.dg/vect/simd-4.cc  -std=c++17  scan-tree-dump-times vect "vectorized [1-3] loops" 2
FAIL: g++.dg/vect/simd-4.cc  -std=c++98  scan-tree-dump-times vect "vectorized [1-3] loops" 2