Regressions on trunk at revision 231660 vs revision 231646

[H.J. Lu Intel64 -fpic -mcmodel=medium -mcmodel=large]

New failures:
FAIL: 22_locale/time_put/put/wchar_t/12439_3.cc (test for excess errors)
FAIL: experimental/type_erased_allocator/2.cc execution test

New passes:
FAIL: gcc.target/i386/mpx/memmove-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (internal compiler error)
FAIL: gcc.target/i386/mpx/memmove-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gcc.target/i386/mpx/memmove-1.c   -O3 -g  (internal compiler error)
FAIL: gcc.target/i386/mpx/memmove-1.c   -O3 -g  (test for excess errors)
FAIL: gcc.target/i386/mpx/va-arg-pack-2-nov.c   -O3 -g  (internal compiler error)
FAIL: gcc.target/i386/mpx/va-arg-pack-2-nov.c   -O3 -g  (test for excess errors)
FAIL: gcc.target/i386/mpx/vararg-8-nov.c   -O3 -g  (internal compiler error)
FAIL: gcc.target/i386/mpx/vararg-8-nov.c   -O3 -g  (test for excess errors)