Regressions on trunk at revision 226579 vs revision 226544

[H.J. Lu ia32 -fpic]

New failures:
FAIL: gfortran.dg/ieee/large_1.f90   -O0  (test for excess errors)
FAIL: gfortran.dg/ieee/large_1.f90   -O1  (test for excess errors)
FAIL: gfortran.dg/ieee/large_1.f90   -O2  (test for excess errors)
FAIL: gfortran.dg/ieee/large_1.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gfortran.dg/ieee/large_1.f90   -O3 -g  (test for excess errors)
FAIL: gfortran.dg/ieee/large_1.f90   -Os  (test for excess errors)

New passes:
FAIL: gcc.target/i386/iamcu/test_struct_returning.c execution,  -O0 
FAIL: gcc.target/i386/iamcu/test_struct_returning.c execution,  -O1 
FAIL: gcc.target/i386/iamcu/test_struct_returning.c execution,  -O2 
FAIL: gcc.target/i386/iamcu/test_struct_returning.c execution,  -O3 -g 
FAIL: gcc.target/i386/iamcu/test_struct_returning.c execution,  -Og -g 
FAIL: gcc.target/i386/iamcu/test_struct_returning.c execution,  -Os