gcc/

	* optabs.c (expand_binop_directly): Allow scalar mode for
	vec_pack_trunc_optab.
	* tree-vect-loop.c (vect_determine_vectorization_factor): Skip
	boolean vector producers from pattern sequence when computing VF.
	* tree-vect-patterns.c (vect_vect_recog_func_ptrs) Add
	vect_recog_mask_conversion_pattern.
	(search_type_for_mask): Choose the smallest
	type if different size types are mixed.
	(build_mask_conversion): New.
	(vect_recog_mask_conversion_pattern): New.
	(vect_pattern_recog_1): Allow scalar mode for boolean vectype.
	* tree-vect-stmts.c (vectorizable_mask_load_store): Support masked
	load with pattern.
	(vectorizable_conversion): Support boolean vectors.
	(free_stmt_vec_info): Allow patterns for statements with no lhs.
	* tree-vectorizer.h (NUM_PATTERNS): Increase to 14.

From-SVN: r230103