Pass a vec_info to vect_halve_mask_nunits

2019-10-21  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-vectorizer.h (vect_halve_mask_nunits): Take a vec_info.
	* tree-vect-loop.c (vect_halve_mask_nunits): Likewise.
	* tree-vect-loop-manip.c (vect_maybe_permute_loop_masks): Update
	call accordingly.
	* tree-vect-stmts.c (supportable_widening_operation): Likewise.

From-SVN: r277233

gcc/ChangeLog

 2019-10-21  Richard Sandiford  <richard.sandiford@arm.com>
 
+	* tree-vectorizer.h (vect_halve_mask_nunits): Take a vec_info.
+	* tree-vect-loop.c (vect_halve_mask_nunits): Likewise.
+	* tree-vect-loop-manip.c (vect_maybe_permute_loop_masks): Update
+	call accordingly.
+	* tree-vect-stmts.c (supportable_widening_operation): Likewise.
+
+2019-10-21  Richard Sandiford  <richard.sandiford@arm.com>
+
 	* tree-vect-loop-manip.c (vect_maybe_permute_loop_masks): Take
 	a loop_vec_info.
 	(vect_set_loop_condition_masked): Update call accordingly.

gcc/tree-vect-loop-manip.c

@@ -317,7 +317,7 @@ interleave_supported_p (vec_perm_indices *indices, tree vectype,
    latter.  Return true on success, adding any new statements to SEQ.  */
 
 static bool
-vect_maybe_permute_loop_masks (loop_vec_info, gimple_seq *seq,
+vect_maybe_permute_loop_masks (loop_vec_info loop_vinfo, gimple_seq *seq,
 			       rgroup_masks *dest_rgm,
 			       rgroup_masks *src_rgm)
 {
@@ -330,7 +330,7 @@ vect_maybe_permute_loop_masks (loop_vec_info, gimple_seq *seq,
     {
       /* Unpacking the source masks gives at least as many mask bits as
 	 we need.  We can then VIEW_CONVERT any excess bits away.  */
-      tree unpack_masktype = vect_halve_mask_nunits (src_masktype);
+      tree unpack_masktype = vect_halve_mask_nunits (loop_vinfo, src_masktype);
       for (unsigned int i = 0; i < dest_rgm->masks.length (); ++i)
 	{
 	  tree src = src_rgm->masks[i / 2];

gcc/tree-vect-loop.c

@@ -7745,7 +7745,7 @@ loop_niters_no_overflow (loop_vec_info loop_vinfo)
 /* Return a mask type with half the number of elements as TYPE.  */
 
 tree
-vect_halve_mask_nunits (tree type)
+vect_halve_mask_nunits (vec_info *, tree type)
 {
   poly_uint64 nunits = exact_div (TYPE_VECTOR_SUBPARTS (type), 2);
   return build_truth_vector_type (nunits, current_vector_size);

gcc/tree-vect-stmts.c

@@ -11385,6 +11385,7 @@ supportable_widening_operation (enum tree_code code, stmt_vec_info stmt_info,
                                 int *multi_step_cvt,
                                 vec<tree> *interm_types)
 {
+  vec_info *vinfo = stmt_info->vinfo;
   loop_vec_info loop_info = STMT_VINFO_LOOP_VINFO (stmt_info);
   class loop *vect_loop = NULL;
   machine_mode vec_mode;
@@ -11570,7 +11571,7 @@ supportable_widening_operation (enum tree_code code, stmt_vec_info stmt_info,
       intermediate_mode = insn_data[icode1].operand[0].mode;
       if (VECTOR_BOOLEAN_TYPE_P (prev_type))
 	{
-	  intermediate_type = vect_halve_mask_nunits (prev_type);
+	  intermediate_type = vect_halve_mask_nunits (vinfo, prev_type);
 	  if (intermediate_mode != TYPE_MODE (intermediate_type))
 	    return false;
 	}

gcc/tree-vectorizer.h

@@ -1705,7 +1705,7 @@ extern opt_loop_vec_info vect_analyze_loop (class loop *,
 extern tree vect_build_loop_niters (loop_vec_info, bool * = NULL);
 extern void vect_gen_vector_loop_niters (loop_vec_info, tree, tree *,
 					 tree *, bool);
-extern tree vect_halve_mask_nunits (tree);
+extern tree vect_halve_mask_nunits (vec_info *, tree);
 extern tree vect_double_mask_nunits (tree);
 extern void vect_record_loop_mask (loop_vec_info, vec_loop_masks *,
 				   unsigned int, tree, tree);