Regressions on trunk at revision 166125 vs revision 166105

[H.J. Lu Intel64]

New failures:

New passes:
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfmadd...pd 1
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfmsub...pd 1
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfnmadd...pd 1
FAIL: gcc.target/i386/fma3-builtin-2.c scan-assembler-times vfnmsub...pd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfmaddpd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfmsubpd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfnmaddpd 1
FAIL: gcc.target/i386/fma4-builtin-2.c scan-assembler-times vfnmsubpd 1