Regressions on trunk at revision 238934 vs revision 238930

[Intel Automatic Testing System [Intel64 Core AVXi]]

New failures:

New passes:
FAIL: gcc.dg/vect/vect-6-big-array.c scan-tree-dump-times vect "Vectorizing an unaligned access" 0
FAIL: gcc.dg/vect/vect-6.c scan-tree-dump-times vect "Vectorizing an unaligned access" 0
FAIL: gcc.dg/vect/vect-91.c scan-tree-dump-times vect "accesses have the same alignment." 3
FAIL: gcc.dg/vect/vect-all-big-array.c -flto -ffat-lto-objects  scan-tree-dump-times vect "Vectorizing an unaligned access" 0
FAIL: gcc.dg/vect/vect-all-big-array.c scan-tree-dump-times vect "Vectorizing an unaligned access" 0
FAIL: gcc.dg/vect/vect-all.c -flto -ffat-lto-objects  scan-tree-dump-times vect "Vectorizing an unaligned access" 0
FAIL: gcc.dg/vect/vect-all.c scan-tree-dump-times vect "Vectorizing an unaligned access" 0
FAIL: gcc.dg/vect/vect-peel-2.c -flto -ffat-lto-objects  scan-tree-dump-times vect "Vectorizing an unaligned access" 1