Regressions on trunk at revision 238303 vs revision 238291

[H.J. Lu ia32 -fpic]

New failures:
FAIL: gcc.dg/vect/vect-mask-store-move-1.c -flto -ffat-lto-objects  scan-tree-dump-times vect "Move stmt to created bb" 4
FAIL: gcc.dg/vect/vect-mask-store-move-1.c scan-tree-dump-times vect "Move stmt to created bb" 4

New passes:
FAIL: gfortran.dg/ldist-1.f90   -O   scan-tree-dump ldist "distributed: split to"
FAIL: gfortran.dg/pr42108.f90   -O   scan-tree-dump pre "in all uses of countm1[^\n]* / "
FAIL: gfortran.dg/vect/pr62283.f   -O   scan-tree-dump-times vect "vectorized 1 loops" 2
FAIL: libstdc++-abi/abi_check