Regressions on trunk at revision 254035 vs revision 254003

[H.J. Lu ia32]

New failures:
FAIL: gcc.target/i386/avx512f-gather-2.c scan-tree-dump-times vect "note: vectorized 1 loops in function" 16 (found 8 times)
FAIL: gcc.target/i386/pr50038.c scan-assembler-times movzbl 2 (found 3 times)
FAIL: gcc.target/i386/pr61403.c scan-assembler blend
FAIL: gcc.target/i386/pr82618.c scan-assembler \\mcmp
FAIL: gcc.target/i386/vect-unpack-1.c scan-assembler-times vpmovzxbw[ \\t]+[^\n]*%zmm 2 (found 0 times)
FAIL: gcc.target/i386/vect-unpack-3.c scan-tree-dump vect "LOOP VECTORIZED"
FAIL: gfortran.dg/graphite/pr82672.f90   -O  (internal compiler error)
FAIL: gfortran.dg/graphite/pr82672.f90   -O  (test for excess errors)

New passes:
FAIL: gcc.dg/tree-ssa/gen-vect-11a.c scan-tree-dump-times vect "vectorized 1 loops" 1 (found 0 times)
FAIL: gcc.dg/tree-ssa/gen-vect-2.c scan-tree-dump-times vect "vectorized 1 loops" 1 (found 0 times)
FAIL: gcc.dg/vect/costmodel/i386/costmodel-vect-31.c scan-tree-dump-times vect "vectorized 4 loops" 1 (found 0 times)
FAIL: gcc.target/i386/pr42542-4a.c scan-assembler pcmpgtq
FAIL: gcc.target/i386/pr42542-5a.c scan-assembler pcmpgtq
FAIL: gcc.target/i386/pr68483-1.c scan-assembler psrldq[^\n\r]*(4,|, 4)
FAIL: gcc.target/i386/pr68483-1.c scan-assembler psrldq[^\n\r]*(8,|, 8)
FAIL: gcc.target/i386/pr78899.c scan-assembler vpadd
FAIL: gcc.target/i386/pr78899.c scan-assembler vpmaskmov
FAIL: gcc.target/i386/vect-abs-s32.c scan-tree-dump-times vect "vectorized 1 loops" 1 (found 0 times)