i386-protos.h (ix86_expand_adjust_ufix_to_sfix_si): New prototype.

	* config/i386/i386-protos.h (ix86_expand_adjust_ufix_to_sfix_si): New
	prototype.
	* config/i386/i386.c (ix86_expand_adjust_ufix_to_sfix_si): New
	function.
	* config/i386/sse.md (fixuns_trunc<mode><sseintvecmodelower>2): Use
	it.
	(ssepackfltmode): New mode attr.
	(vec_pack_ufix_trunc_<mode>): New expander.

From-SVN: r180743