sse.md (vec_extract_lo_<mode><mask_name>): Add (=v, v) alternative and explicit ...

sse.md (vec_extract_lo_<mode><mask_name>): Add (=v, v) alternative and explicit "memory" attribute.

	* config/i386/sse.md (vec_extract_lo_<mode><mask_name>): Add
	(=v, v) alternative and explicit "memory" attribute.
	(vec_extract_lo_<mode><mask_name>): Likewise.  Also add
	"type", "prefix", "prefix_extra", "length_immediate" and "mode"
	attributes.
	(vec_extract_lo_<mode><mask_name>): Add (=v, v) alternative and use
	"sselog1" type instead of "sselog".
	(vec_extract_hi_<mode><mask_name>): Use "sselog1" type instead of
	"sselog".  Remove explicit "memory" attribute.
	(vec_extract_lo_v32hi): Add (=v, v) alternative and explicit "memory",
	"type", "prefix", "prefix_extra", "length_immediate" and "mode"
	attributes.
	(vec_extract_hi_v32hi): Merge all alternatives into one, use
	"sselog1" type instead of "sselog".  Remove explicit "memory"
	attribute.
	(vec_extract_hi_v16hi): Merge each pair of alternatives into one,
	use "sselog1" type instead of "sselog".  Remove explicit "memory"
	attribute.
	(vec_extract_lo_v64qi): Add (=v, v) alternative and explicit "memory",
	"type", "prefix", "prefix_extra", "length_immediate" and "mode"
	attributes.
	(vec_extract_hi_v64qi): Merge all alternatives into one, use
	"sselog1" type instead of "sselog".  Remove explicit "memory"
	attribute.
	(vec_extract_hi_v32qi): Merge each pair of alternatives into one,
	use "sselog1" type instead of "sselog".  Remove explicit "memory"
	attribute.

From-SVN: r259438