Regressions on trunk at revision 193743 vs revision 193722

[H.J. Lu Intel64 Core 2/i7]

New failures:
FAIL: gcc.target/i386/avx-vzeroupper-16.c (internal compiler error)
FAIL: gcc.target/i386/avx-vzeroupper-16.c (test for excess errors)
FAIL: gcc.target/i386/avx-vzeroupper-17.c (internal compiler error)
FAIL: gcc.target/i386/avx-vzeroupper-17.c (test for excess errors)
FAIL: gcc.target/i386/avx-vzeroupper-18.c (internal compiler error)
FAIL: gcc.target/i386/avx-vzeroupper-18.c (test for excess errors)
FAIL: gcc.target/i386/pr43869.c (internal compiler error)
FAIL: gcc.target/i386/pr43869.c (test for excess errors)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-1.c (internal compiler error)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-1.c (test for excess errors)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-4a.c (internal compiler error)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-4a.c (test for excess errors)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-4b.c (internal compiler error)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-4b.c (test for excess errors)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-5a.c (internal compiler error)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-5a.c (test for excess errors)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-5b.c (internal compiler error)
FAIL: gcc.target/x86_64/abi/callabi/vaarg-5b.c (test for excess errors)

New passes: