Regressions on trunk at revision 206679 vs revision 206663

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: gcc.target/i386/pr9771-1.c (internal compiler error)
FAIL: gcc.target/i386/pr9771-1.c (test for excess errors)
FAIL: gcc.target/i386/sse-23.c (test for excess errors)
FAIL: gcc.target/i386/sse-24.c (test for excess errors)