Regressions on trunk at revision 225212 vs revision 225194

[H.J. Lu ia32 -fpic]

New failures:
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 -fomit-frame-pointer 
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 

New passes:
FAIL: g++.dg/cilk-plus/CK/fib-opr-overload.cc  -g -fcilkplus execution test