Regressions on trunk at revision 154506 vs revision 154478

[H.J. Lu Intel64]

New failures:

New passes:
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O1 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O1 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O2 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O2 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O2 -flto 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O2 -flto 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O2 -fwhopr 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O2 -fwhopr 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -fomit-frame-pointer 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -fomit-frame-pointer 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -fomit-frame-pointer -funroll-loops 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -fomit-frame-pointer -funroll-loops 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -g 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -O3 -g 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -Os 
FAIL: gcc.c-torture/execute/va-arg-22.c execution,  -Os 
FAIL: gcc.dg/Wtype-limits.c (test for excess errors)
FAIL: gcc.dg/Wtype-limits.c (test for excess errors)