tree-vectorizer.h (struct _stmt_vec_info): Add new field to determine if the statement is vectorizable...


	* 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.

From-SVN: r158719