Regressions on trunk at revision 228461 vs revision 228457

[Intel Automatic Testing System [ia32 Core AVXi PIE]]

New failures:

New passes:
FAIL: gcc.target/i386/vect-pack-trunc-1.c (test for excess errors)
FAIL: gcc.target/i386/vect-pack-trunc-2.c (test for excess errors)
FAIL: gcc.target/i386/vect-perm-even-1.c (test for excess errors)
FAIL: gcc.target/i386/vect-perm-odd-1.c (test for excess errors)
FAIL: gcc.target/i386/vect-unpack-1.c (test for excess errors)
FAIL: gcc.target/i386/vect-unpack-2.c (test for excess errors)