Regressions on trunk at revision 239611 vs revision 239604

[H.J. Lu ia32]

New failures:
FAIL: gfortran.dg/vect/pr69466.f90   -O  (internal compiler error)
FAIL: gfortran.dg/vect/pr69466.f90   -O  (test for excess errors)

New passes:
FAIL: gcc.dg/tree-ssa/pr71347.c scan-tree-dump-not optimized ".* = MEM.*;"