PR target/52568
	* config/i386/i386.c (expand_vec_perm_vperm2f128_vblend): New
	function.
	(ix86_expand_vec_perm_const_1): Use it.

	* gcc.dg/torture/vshuf-4.inc: Add two new tests.
	* gcc.dg/torture/vshuf-8.inc: Likewise.
	* gcc.dg/torture/vshuf-16.inc: Likewise.
	* gcc.dg/torture/vshuf-32.inc: Likewise.

From-SVN: r185447