Regressions on trunk at revision 160623 vs revision 160607

[H.J. Lu ia32]

New failures:
FAIL: gcc.c-torture/execute/frame-address.c execution,  -O2 
FAIL: gcc.c-torture/execute/frame-address.c execution,  -O2 -flto 
FAIL: gcc.c-torture/execute/frame-address.c execution,  -O2 -fwhopr 
FAIL: gcc.c-torture/execute/frame-address.c execution,  -O3 -g 
FAIL: gcc.c-torture/execute/frame-address.c execution,  -Os 

New passes:
FAIL: gfortran.dg/maxlocval_2.f90  -O1  (internal compiler error)
FAIL: gfortran.dg/maxlocval_2.f90  -O1  (test for excess errors)