re PR tree-optimization/50596 (Problems in vectorization of condition expression)

re PR tree-optimization/50596 (Problems in vectorization of condition expression)

	PR tree-optimization/50596
	* tree-vectorizer.h (vect_is_simple_cond): New prototype.
	(NUM_PATTERNS): Change to 6.
	* tree-vect-patterns.c (vect_recog_mixed_size_cond_pattern): New
	function.
	(vect_vect_recog_func_ptrs): Add vect_recog_mixed_size_cond_pattern.
	(vect_mark_pattern_stmts): Don't create stmt_vinfo for def_stmt
	if it already has one, and don't set STMT_VINFO_VECTYPE in it
	if it is already set.
	* tree-vect-stmts.c (vect_mark_stmts_to_be_vectorized): Handle
	COND_EXPR in pattern stmts.
	(vect_is_simple_cond): No longer static.

	* lib/target-supports.exp (check_effective_target_vect_cond_mixed):
	New.
	* gcc.dg/vect/vect-cond-8.c: New test.

From-SVN: r179626