Regressions on trunk at revision 254035 vs revision 254003

[H.J. Lu x32]

New failures:
FAIL: gcc.target/i386/avx512f-gather-2.c scan-assembler-not gather[^\n]*xmm[^\n]*xmm
FAIL: gcc.target/i386/avx512f-gather-2.c scan-tree-dump-times vect "note: vectorized 1 loops in function" 16 (found 12 times)
FAIL: gcc.target/i386/pr61403.c scan-assembler blend
FAIL: gcc.target/i386/vect-unpack-1.c scan-assembler-times vpmovzxbw[ \\t]+[^\n]*%zmm 2 (found 0 times)
FAIL: gfortran.dg/graphite/pr82672.f90   -O   2 blank line(s) in output
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/vect/costmodel/i386/costmodel-vect-31.c scan-tree-dump-times vect "vectorized 4 loops" 1 (found 0 times)
FAIL: gcc.dg/vect/costmodel/x86_64/costmodel-vect-31.c scan-tree-dump-times vect "vectorized 4 loops" 1 (found 0 times)
FAIL: gcc.dg/vect/costmodel/x86_64/costmodel-vect-slp.c scan-tree-dump-not slp2 "vectorization is not profitable"
FAIL: gcc.dg/vect/costmodel/x86_64/costmodel-vect-slp.c scan-tree-dump slp2 "basic block vectorized"
FAIL: gcc.target/i386/pr42542-4a.c scan-assembler pcmpgtq
FAIL: gcc.target/i386/pr42542-5a.c scan-assembler pcmpgtq
FAIL: gcc.target/i386/vect-abs-s32.c scan-tree-dump-times vect "vectorized 1 loops" 1 (found 0 times)