Regressions on trunk at revision 236457 vs revision 236354

[H.J. Lu Intel64]

New failures:
FAIL: gcc.dg/tree-ssa/scev-5.c scan-tree-dump-times optimized "&a" 1
FAIL: gcc.dg/tree-ssa/slsr-30.c (internal compiler error)
FAIL: gcc.dg/tree-ssa/slsr-30.c (test for excess errors)
FAIL: gfortran.dg/graphite/pr68279.f90   -O  (internal compiler error)
FAIL: gfortran.dg/graphite/pr68279.f90   -O  (internal compiler error)
FAIL: gfortran.dg/graphite/pr68279.f90   -O  (test for excess errors)
FAIL: gfortran.dg/graphite/pr68279.f90   -O  (test for excess errors)

New passes: