* tree-vectorizer.h (struct _stmt_vec_info): Add new field to

	* tree-vectorizer.h (struct _stmt_vec_info): Add new field to
	determine if the statement is vectorizable, and a macro to
	access it.
	* tree-vect-data-refs.c (vect_analyze_data_ref_dependence):
	Skip statements that can't be vectorized. If the analysis
	fails, mark the statement as unvectorizable if vectorizing
	basic block.
	(vect_compute_data_refs_alignment): Likewise.
	(vect_verify_datarefs_alignment): Skip statements marked as
	unvectorizable. Add print.
	(vect_analyze_group_access): Skip statements that can't be
	vectorized. If the analysis fails, mark the statement as
	unvectorizable if vectorizing basic block.
	(vect_analyze_data_ref_accesses, vect_analyze_data_refs):
	Likewise.
	* tree-vect-stmts.c (vectorizable_store): Fix the number of
	generated stmts for SLP.
	(new_stmt_vec_info): Initialize the new field.
	* tree-vect-slp.c (vect_build_slp_tree): Fail to vectorize
	statements marked as unvectorizable.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158719 138bc75d-0d04-0410-961f-82ee72b054a4