* config/i386/constraints.md (Y3): New register constraint.
	* config/i386/sse.md (*vec_interleave_highv2df): Merge with
	*sse3_interleave_highv2df and *sse2_interleave_highv2df.
	(*vec_interleave_lowv2df): Merge with *sse3_interleave_lowv2df and
	*sse2_interleave_lowv2df.

From-SVN: r174580