[14/46] Make STMT_VINFO_VEC_STMT a stmt_vec_info

This patch changes STMT_VINFO_VEC_STMT from a gimple stmt to a
stmt_vec_info and makes the vectorizable_* routines pass back
a stmt_vec_info to vect_transform_stmt.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-vectorizer.h (_stmt_vec_info::vectorized_stmt): Change from
	a gimple stmt to a stmt_vec_info.
	(vectorizable_condition, vectorizable_live_operation)
	(vectorizable_reduction, vectorizable_induction): Pass back the
	vectorized statement as a stmt_vec_info.
	* tree-vect-data-refs.c (vect_record_grouped_load_vectors): Update
	use of STMT_VINFO_VEC_STMT.
	* tree-vect-loop.c (vect_create_epilog_for_reduction): Likewise,
	accumulating the inner phis that feed the STMT_VINFO_VEC_STMT
	as stmt_vec_infos rather than gimple stmts.
	(vectorize_fold_left_reduction): Change vec_stmt from a gimple stmt
	to a stmt_vec_info.
	(vectorizable_live_operation): Likewise.
	(vectorizable_reduction, vectorizable_induction): Likewise,
	updating use of STMT_VINFO_VEC_STMT.
	* tree-vect-stmts.c (vect_get_vec_def_for_operand_1): Update use
	of STMT_VINFO_VEC_STMT.
	(vect_build_gather_load_calls, vectorizable_bswap, vectorizable_call)
	(vectorizable_simd_clone_call, vectorizable_conversion)
	(vectorizable_assignment, vectorizable_shift, vectorizable_operation)
	(vectorizable_store, vectorizable_load, vectorizable_condition)
	(vectorizable_comparison, can_vectorize_live_stmts): Change vec_stmt
	from a gimple stmt to a stmt_vec_info.
	(vect_transform_stmt): Update use of STMT_VINFO_VEC_STMT.  Pass a
	pointer to a stmt_vec_info to the vectorizable_* routines.

From-SVN: r263129

gcc/ChangeLog

 2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>
 
+	* tree-vectorizer.h (_stmt_vec_info::vectorized_stmt): Change from
+	a gimple stmt to a stmt_vec_info.
+	(vectorizable_condition, vectorizable_live_operation)
+	(vectorizable_reduction, vectorizable_induction): Pass back the
+	vectorized statement as a stmt_vec_info.
+	* tree-vect-data-refs.c (vect_record_grouped_load_vectors): Update
+	use of STMT_VINFO_VEC_STMT.
+	* tree-vect-loop.c (vect_create_epilog_for_reduction): Likewise,
+	accumulating the inner phis that feed the STMT_VINFO_VEC_STMT
+	as stmt_vec_infos rather than gimple stmts.
+	(vectorize_fold_left_reduction): Change vec_stmt from a gimple stmt
+	to a stmt_vec_info.
+	(vectorizable_live_operation): Likewise.
+	(vectorizable_reduction, vectorizable_induction): Likewise,
+	updating use of STMT_VINFO_VEC_STMT.
+	* tree-vect-stmts.c (vect_get_vec_def_for_operand_1): Update use
+	of STMT_VINFO_VEC_STMT.
+	(vect_build_gather_load_calls, vectorizable_bswap, vectorizable_call)
+	(vectorizable_simd_clone_call, vectorizable_conversion)
+	(vectorizable_assignment, vectorizable_shift, vectorizable_operation)
+	(vectorizable_store, vectorizable_load, vectorizable_condition)
+	(vectorizable_comparison, can_vectorize_live_stmts): Change vec_stmt
+	from a gimple stmt to a stmt_vec_info.
+	(vect_transform_stmt): Update use of STMT_VINFO_VEC_STMT.  Pass a
+	pointer to a stmt_vec_info to the vectorizable_* routines.
+
+2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>
+
 	* tree-vectorizer.h (_stmt_vec_info::related_stmt): Change from
 	a gimple stmt to a stmt_vec_info.
 	(is_pattern_stmt_p): Update accordingly.

gcc/tree-vect-data-refs.c

@@ -6401,18 +6401,17 @@ vect_record_grouped_load_vectors (gimple *stmt, vec<tree> result_chain)
             {
               if (!DR_GROUP_SAME_DR_STMT (vinfo_for_stmt (next_stmt)))
                 {
-		  gimple *prev_stmt =
-		    STMT_VINFO_VEC_STMT (vinfo_for_stmt (next_stmt));
+		  stmt_vec_info prev_stmt_info
+		    = STMT_VINFO_VEC_STMT (vinfo_for_stmt (next_stmt));
 		  stmt_vec_info rel_stmt_info
-		    = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (prev_stmt));
+		    = STMT_VINFO_RELATED_STMT (prev_stmt_info);
 		  while (rel_stmt_info)
 		    {
-		      prev_stmt = rel_stmt_info;
+		      prev_stmt_info = rel_stmt_info;
 		      rel_stmt_info = STMT_VINFO_RELATED_STMT (rel_stmt_info);
 		    }
 
-		  STMT_VINFO_RELATED_STMT (vinfo_for_stmt (prev_stmt))
-		    = new_stmt_info;
+		  STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt_info;
                 }
             }
 

gcc/tree-vect-loop.c

@@ -4445,7 +4445,7 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple *stmt,
   gimple *use_stmt, *reduction_phi = NULL;
   bool nested_in_vect_loop = false;
   auto_vec<gimple *> new_phis;
-  auto_vec<gimple *> inner_phis;
+  auto_vec<stmt_vec_info> inner_phis;
   enum vect_def_type dt = vect_unknown_def_type;
   int j, i;
   auto_vec<tree> scalar_results;
@@ -4455,7 +4455,7 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple *stmt,
   bool slp_reduc = false;
   bool direct_slp_reduc;
   tree new_phi_result;
-  gimple *inner_phi = NULL;
+  stmt_vec_info inner_phi = NULL;
   tree induction_index = NULL_TREE;
 
   if (slp_node)
@@ -4605,7 +4605,7 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple *stmt,
       tree indx_before_incr, indx_after_incr;
       poly_uint64 nunits_out = TYPE_VECTOR_SUBPARTS (vectype);
 
-      gimple *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info);
+      gimple *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info)->stmt;
       gcc_assert (gimple_assign_rhs_code (vec_stmt) == VEC_COND_EXPR);
 
       int scalar_precision
@@ -4738,20 +4738,21 @@ vect_create_epilog_for_reduction (vec<tree> vect_defs, gimple *stmt,
       inner_phis.create (vect_defs.length ());
       FOR_EACH_VEC_ELT (new_phis, i, phi)
 	{
+	  stmt_vec_info phi_info = loop_vinfo->lookup_stmt (phi);
 	  tree new_result = copy_ssa_name (PHI_RESULT (phi));
 	  gphi *outer_phi = create_phi_node (new_result, exit_bb);
 	  SET_PHI_ARG_DEF (outer_phi, single_exit (loop)->dest_idx,
 			   PHI_RESULT (phi));
 	  prev_phi_info = loop_vinfo->add_stmt (outer_phi);
-	  inner_phis.quick_push (phi);
+	  inner_phis.quick_push (phi_info);
 	  new_phis[i] = outer_phi;
-          while (STMT_VINFO_RELATED_STMT (vinfo_for_stmt (phi)))
+	  while (STMT_VINFO_RELATED_STMT (phi_info))
             {
-	      phi = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (phi));
-	      new_result = copy_ssa_name (PHI_RESULT (phi));
+	      phi_info = STMT_VINFO_RELATED_STMT (phi_info);
+	      new_result = copy_ssa_name (PHI_RESULT (phi_info->stmt));
 	      outer_phi = create_phi_node (new_result, exit_bb);
 	      SET_PHI_ARG_DEF (outer_phi, single_exit (loop)->dest_idx,
-			       PHI_RESULT (phi));
+			       PHI_RESULT (phi_info->stmt));
 	      stmt_vec_info outer_phi_info = loop_vinfo->add_stmt (outer_phi);
 	      STMT_VINFO_RELATED_STMT (prev_phi_info) = outer_phi_info;
 	      prev_phi_info = outer_phi_info;
@@ -5644,7 +5645,8 @@ vect_finalize_reduction:
 	      if (double_reduc)
 		STMT_VINFO_VEC_STMT (exit_phi_vinfo) = inner_phi;
 	      else
-		STMT_VINFO_VEC_STMT (exit_phi_vinfo) = epilog_stmt;
+		STMT_VINFO_VEC_STMT (exit_phi_vinfo)
+		  = vinfo_for_stmt (epilog_stmt);
               if (!double_reduc
                   || STMT_VINFO_DEF_TYPE (exit_phi_vinfo)
                       != vect_double_reduction_def)
@@ -5706,8 +5708,8 @@ vect_finalize_reduction:
                   add_phi_arg (vect_phi, vect_phi_init,
                                loop_preheader_edge (outer_loop),
                                UNKNOWN_LOCATION);
-                  add_phi_arg (vect_phi, PHI_RESULT (inner_phi),
-                               loop_latch_edge (outer_loop), UNKNOWN_LOCATION);
+		  add_phi_arg (vect_phi, PHI_RESULT (inner_phi->stmt),
+			       loop_latch_edge (outer_loop), UNKNOWN_LOCATION);
                   if (dump_enabled_p ())
                     {
                       dump_printf_loc (MSG_NOTE, vect_location,
@@ -5846,7 +5848,7 @@ vect_expand_fold_left (gimple_stmt_iterator *gsi, tree scalar_dest,
 
 static bool
 vectorize_fold_left_reduction (gimple *stmt, gimple_stmt_iterator *gsi,
-			       gimple **vec_stmt, slp_tree slp_node,
+			       stmt_vec_info *vec_stmt, slp_tree slp_node,
 			       gimple *reduc_def_stmt,
 			       tree_code code, internal_fn reduc_fn,
 			       tree ops[3], tree vectype_in,
@@ -6070,7 +6072,7 @@ is_nonwrapping_integer_induction (gimple *stmt, struct loop *loop)
 
 bool
 vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi,
-			gimple **vec_stmt, slp_tree slp_node,
+			stmt_vec_info *vec_stmt, slp_tree slp_node,
 			slp_instance slp_node_instance,
 			stmt_vector_for_cost *cost_vec)
 {
@@ -6220,7 +6222,8 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi,
 		  else
 		    {
 		      if (j == 0)
-			STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_phi;
+			STMT_VINFO_VEC_STMT (stmt_info)
+			  = *vec_stmt = new_phi_info;
 		      else
 			STMT_VINFO_RELATED_STMT (prev_phi_info) = new_phi_info;
 		      prev_phi_info = new_phi_info;
@@ -7201,7 +7204,7 @@ vectorizable_reduction (gimple *stmt, gimple_stmt_iterator *gsi,
   /* Finalize the reduction-phi (set its arguments) and create the
      epilog reduction code.  */
   if ((!single_defuse_cycle || code == COND_EXPR) && !slp_node)
-    vect_defs[0] = gimple_get_lhs (*vec_stmt);
+    vect_defs[0] = gimple_get_lhs ((*vec_stmt)->stmt);
 
   vect_create_epilog_for_reduction (vect_defs, stmt, reduc_def_stmt,
 				    epilog_copies, reduc_fn, phis,
@@ -7262,7 +7265,7 @@ vect_worthwhile_without_simd_p (vec_info *vinfo, tree_code code)
 bool
 vectorizable_induction (gimple *phi,
 			gimple_stmt_iterator *gsi ATTRIBUTE_UNUSED,
-			gimple **vec_stmt, slp_tree slp_node,
+			stmt_vec_info *vec_stmt, slp_tree slp_node,
 			stmt_vector_for_cost *cost_vec)
 {
   stmt_vec_info stmt_info = vinfo_for_stmt (phi);
@@ -7700,7 +7703,7 @@ vectorizable_induction (gimple *phi,
   add_phi_arg (induction_phi, vec_def, loop_latch_edge (iv_loop),
 	       UNKNOWN_LOCATION);
 
-  STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = induction_phi;
+  STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = induction_phi_info;
 
   /* In case that vectorization factor (VF) is bigger than the number
      of elements that we can fit in a vectype (nunits), we have to generate
@@ -7779,7 +7782,7 @@ vectorizable_induction (gimple *phi,
 	  gcc_assert (STMT_VINFO_RELEVANT_P (stmt_vinfo)
 		      && !STMT_VINFO_LIVE_P (stmt_vinfo));
 
-	  STMT_VINFO_VEC_STMT (stmt_vinfo) = new_stmt;
+	  STMT_VINFO_VEC_STMT (stmt_vinfo) = new_stmt_info;
 	  if (dump_enabled_p ())
 	    {
 	      dump_printf_loc (MSG_NOTE, vect_location,
@@ -7811,7 +7814,7 @@ bool
 vectorizable_live_operation (gimple *stmt,
 			     gimple_stmt_iterator *gsi ATTRIBUTE_UNUSED,
 			     slp_tree slp_node, int slp_index,
-			     gimple **vec_stmt,
+			     stmt_vec_info *vec_stmt,
 			     stmt_vector_for_cost *)
 {
   stmt_vec_info stmt_info = vinfo_for_stmt (stmt);

gcc/tree-vect-stmts.c

@@ -1465,7 +1465,7 @@ tree
 vect_get_vec_def_for_operand_1 (gimple *def_stmt, enum vect_def_type dt)
 {
   tree vec_oprnd;
-  gimple *vec_stmt;
+  stmt_vec_info vec_stmt_info;
   stmt_vec_info def_stmt_info = NULL;
 
   switch (dt)
@@ -1482,21 +1482,19 @@ vect_get_vec_def_for_operand_1 (gimple *def_stmt, enum vect_def_type dt)
         /* Get the def from the vectorized stmt.  */
         def_stmt_info = vinfo_for_stmt (def_stmt);
 
-        vec_stmt = STMT_VINFO_VEC_STMT (def_stmt_info);
-        /* Get vectorized pattern statement.  */
-        if (!vec_stmt
-            && STMT_VINFO_IN_PATTERN_P (def_stmt_info)
-            && !STMT_VINFO_RELEVANT (def_stmt_info))
-	  vec_stmt = (STMT_VINFO_VEC_STMT
-		      (STMT_VINFO_RELATED_STMT (def_stmt_info)));
-        gcc_assert (vec_stmt);
-	if (gimple_code (vec_stmt) == GIMPLE_PHI)
-	  vec_oprnd = PHI_RESULT (vec_stmt);
-	else if (is_gimple_call (vec_stmt))
-	  vec_oprnd = gimple_call_lhs (vec_stmt);
+	vec_stmt_info = STMT_VINFO_VEC_STMT (def_stmt_info);
+	/* Get vectorized pattern statement.  */
+	if (!vec_stmt_info
+	    && STMT_VINFO_IN_PATTERN_P (def_stmt_info)
+	    && !STMT_VINFO_RELEVANT (def_stmt_info))
+	  vec_stmt_info = (STMT_VINFO_VEC_STMT
+			   (STMT_VINFO_RELATED_STMT (def_stmt_info)));
+	gcc_assert (vec_stmt_info);
+	if (gphi *phi = dyn_cast <gphi *> (vec_stmt_info->stmt))
+	  vec_oprnd = PHI_RESULT (phi);
 	else
-	  vec_oprnd = gimple_assign_lhs (vec_stmt);
-        return vec_oprnd;
+	  vec_oprnd = gimple_get_lhs (vec_stmt_info->stmt);
+	return vec_oprnd;
       }
 
     /* operand is defined by a loop header phi.  */
@@ -1507,14 +1505,14 @@ vect_get_vec_def_for_operand_1 (gimple *def_stmt, enum vect_def_type dt)
       {
 	gcc_assert (gimple_code (def_stmt) == GIMPLE_PHI);
 
-        /* Get the def from the vectorized stmt.  */
-        def_stmt_info = vinfo_for_stmt (def_stmt);
-        vec_stmt = STMT_VINFO_VEC_STMT (def_stmt_info);
-	if (gimple_code (vec_stmt) == GIMPLE_PHI)
-	  vec_oprnd = PHI_RESULT (vec_stmt);
+	/* Get the def from the vectorized stmt.  */
+	def_stmt_info = vinfo_for_stmt (def_stmt);
+	vec_stmt_info = STMT_VINFO_VEC_STMT (def_stmt_info);
+	if (gphi *phi = dyn_cast <gphi *> (vec_stmt_info->stmt))
+	  vec_oprnd = PHI_RESULT (phi);
 	else
-	  vec_oprnd = gimple_get_lhs (vec_stmt);
-        return vec_oprnd;
+	  vec_oprnd = gimple_get_lhs (vec_stmt_info->stmt);
+	return vec_oprnd;
       }
 
     default:
@@ -2674,8 +2672,9 @@ vect_build_zero_merge_argument (gimple *stmt, tree vectype)
 
 static void
 vect_build_gather_load_calls (gimple *stmt, gimple_stmt_iterator *gsi,
-			      gimple **vec_stmt, gather_scatter_info *gs_info,
-			      tree mask, vect_def_type mask_dt)
+			      stmt_vec_info *vec_stmt,
+			      gather_scatter_info *gs_info, tree mask,
+			      vect_def_type mask_dt)
 {
   stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
   loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
@@ -2960,7 +2959,7 @@ vect_get_data_ptr_increment (data_reference *dr, tree aggr_type,
 
 static bool
 vectorizable_bswap (gimple *stmt, gimple_stmt_iterator *gsi,
-		    gimple **vec_stmt, slp_tree slp_node,
+		    stmt_vec_info *vec_stmt, slp_tree slp_node,
 		    tree vectype_in, enum vect_def_type *dt,
 		    stmt_vector_for_cost *cost_vec)
 {
@@ -3104,8 +3103,9 @@ simple_integer_narrowing (tree vectype_out, tree vectype_in,
    Return FALSE if not a vectorizable STMT, TRUE otherwise.  */
 
 static bool
-vectorizable_call (gimple *gs, gimple_stmt_iterator *gsi, gimple **vec_stmt,
-		   slp_tree slp_node, stmt_vector_for_cost *cost_vec)
+vectorizable_call (gimple *gs, gimple_stmt_iterator *gsi,
+		   stmt_vec_info *vec_stmt, slp_tree slp_node,
+		   stmt_vector_for_cost *cost_vec)
 {
   gcall *stmt;
   tree vec_dest;
@@ -3745,7 +3745,7 @@ simd_clone_subparts (tree vectype)
 
 static bool
 vectorizable_simd_clone_call (gimple *stmt, gimple_stmt_iterator *gsi,
-			      gimple **vec_stmt, slp_tree slp_node,
+			      stmt_vec_info *vec_stmt, slp_tree slp_node,
 			      stmt_vector_for_cost *)
 {
   tree vec_dest;
@@ -4596,7 +4596,7 @@ vect_create_vectorized_promotion_stmts (vec<tree> *vec_oprnds0,
 
 static bool
 vectorizable_conversion (gimple *stmt, gimple_stmt_iterator *gsi,
-			 gimple **vec_stmt, slp_tree slp_node,
+			 stmt_vec_info *vec_stmt, slp_tree slp_node,
 			 stmt_vector_for_cost *cost_vec)
 {
   tree vec_dest;
@@ -5204,7 +5204,7 @@ vectorizable_conversion (gimple *stmt, gimple_stmt_iterator *gsi,
 
 static bool
 vectorizable_assignment (gimple *stmt, gimple_stmt_iterator *gsi,
-			 gimple **vec_stmt, slp_tree slp_node,
+			 stmt_vec_info *vec_stmt, slp_tree slp_node,
 			 stmt_vector_for_cost *cost_vec)
 {
   tree vec_dest;
@@ -5405,7 +5405,7 @@ vect_supportable_shift (enum tree_code code, tree scalar_type)
 
 static bool
 vectorizable_shift (gimple *stmt, gimple_stmt_iterator *gsi,
-                    gimple **vec_stmt, slp_tree slp_node,
+		    stmt_vec_info *vec_stmt, slp_tree slp_node,
 		    stmt_vector_for_cost *cost_vec)
 {
   tree vec_dest;
@@ -5769,7 +5769,7 @@ vectorizable_shift (gimple *stmt, gimple_stmt_iterator *gsi,
 
 static bool
 vectorizable_operation (gimple *stmt, gimple_stmt_iterator *gsi,
-			gimple **vec_stmt, slp_tree slp_node,
+			stmt_vec_info *vec_stmt, slp_tree slp_node,
 			stmt_vector_for_cost *cost_vec)
 {
   tree vec_dest;
@@ -6222,8 +6222,9 @@ get_group_alias_ptr_type (gimple *first_stmt)
    Return FALSE if not a vectorizable STMT, TRUE otherwise.  */
 
 static bool
-vectorizable_store (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
-                    slp_tree slp_node, stmt_vector_for_cost *cost_vec)
+vectorizable_store (gimple *stmt, gimple_stmt_iterator *gsi,
+		    stmt_vec_info *vec_stmt, slp_tree slp_node,
+		    stmt_vector_for_cost *cost_vec)
 {
   tree data_ref;
   tree op;
@@ -7385,8 +7386,9 @@ hoist_defs_of_uses (gimple *stmt, struct loop *loop)
    Return FALSE if not a vectorizable STMT, TRUE otherwise.  */
 
 static bool
-vectorizable_load (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
-                   slp_tree slp_node, slp_instance slp_node_instance,
+vectorizable_load (gimple *stmt, gimple_stmt_iterator *gsi,
+		   stmt_vec_info *vec_stmt, slp_tree slp_node,
+		   slp_instance slp_node_instance,
 		   stmt_vector_for_cost *cost_vec)
 {
   tree scalar_dest;
@@ -8710,8 +8712,9 @@ vect_is_simple_cond (tree cond, vec_info *vinfo,
 
 bool
 vectorizable_condition (gimple *stmt, gimple_stmt_iterator *gsi,
-			gimple **vec_stmt, tree reduc_def, int reduc_index,
-			slp_tree slp_node, stmt_vector_for_cost *cost_vec)
+			stmt_vec_info *vec_stmt, tree reduc_def,
+			int reduc_index, slp_tree slp_node,
+			stmt_vector_for_cost *cost_vec)
 {
   tree scalar_dest = NULL_TREE;
   tree vec_dest = NULL_TREE;
@@ -9111,7 +9114,7 @@ vectorizable_condition (gimple *stmt, gimple_stmt_iterator *gsi,
 
 static bool
 vectorizable_comparison (gimple *stmt, gimple_stmt_iterator *gsi,
-			 gimple **vec_stmt, tree reduc_def,
+			 stmt_vec_info *vec_stmt, tree reduc_def,
 			 slp_tree slp_node, stmt_vector_for_cost *cost_vec)
 {
   tree lhs, rhs1, rhs2;
@@ -9383,7 +9386,7 @@ vectorizable_comparison (gimple *stmt, gimple_stmt_iterator *gsi,
 
 static bool
 can_vectorize_live_stmts (gimple *stmt, gimple_stmt_iterator *gsi,
-			  slp_tree slp_node, gimple **vec_stmt,
+			  slp_tree slp_node, stmt_vec_info *vec_stmt,
 			  stmt_vector_for_cost *cost_vec)
 {
   if (slp_node)
@@ -9647,11 +9650,11 @@ vect_transform_stmt (gimple *stmt, gimple_stmt_iterator *gsi,
   stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
   vec_info *vinfo = stmt_info->vinfo;
   bool is_store = false;
-  gimple *vec_stmt = NULL;
+  stmt_vec_info vec_stmt = NULL;
   bool done;
 
   gcc_assert (slp_node || !PURE_SLP_STMT (stmt_info));
-  gimple *old_vec_stmt = STMT_VINFO_VEC_STMT (stmt_info);
+  stmt_vec_info old_vec_stmt_info = STMT_VINFO_VEC_STMT (stmt_info);
 
   bool nested_p = (STMT_VINFO_LOOP_VINFO (stmt_info)
 		   && nested_in_vect_loop_p
@@ -9752,7 +9755,7 @@ vect_transform_stmt (gimple *stmt, gimple_stmt_iterator *gsi,
      This would break hybrid SLP vectorization.  */
   if (slp_node)
     gcc_assert (!vec_stmt
-		&& STMT_VINFO_VEC_STMT (stmt_info) == old_vec_stmt);
+		&& STMT_VINFO_VEC_STMT (stmt_info) == old_vec_stmt_info);
 
   /* Handle inner-loop stmts whose DEF is used in the loop-nest that
      is being vectorized, but outside the immediately enclosing loop.  */

gcc/tree-vectorizer.h

@@ -812,7 +812,7 @@ struct _stmt_vec_info {
   tree vectype;
 
   /* The vectorized version of the stmt.  */
-  gimple *vectorized_stmt;
+  stmt_vec_info vectorized_stmt;
 
 
   /* The following is relevant only for stmts that contain a non-scalar
@@ -1560,7 +1560,7 @@ extern void vect_remove_stores (gimple *);
 extern bool vect_analyze_stmt (gimple *, bool *, slp_tree, slp_instance,
 			       stmt_vector_for_cost *);
 extern bool vectorizable_condition (gimple *, gimple_stmt_iterator *,
-				    gimple **, tree, int, slp_tree,
+				    stmt_vec_info *, tree, int, slp_tree,
 				    stmt_vector_for_cost *);
 extern void vect_get_load_cost (stmt_vec_info, int, bool,
 				unsigned int *, unsigned int *,
@@ -1649,13 +1649,13 @@ extern tree vect_get_loop_mask (gimple_stmt_iterator *, vec_loop_masks *,
 extern struct loop *vect_transform_loop (loop_vec_info);
 extern loop_vec_info vect_analyze_loop_form (struct loop *, vec_info_shared *);
 extern bool vectorizable_live_operation (gimple *, gimple_stmt_iterator *,
-					 slp_tree, int, gimple **,
+					 slp_tree, int, stmt_vec_info *,
 					 stmt_vector_for_cost *);
 extern bool vectorizable_reduction (gimple *, gimple_stmt_iterator *,
-				    gimple **, slp_tree, slp_instance,
+				    stmt_vec_info *, slp_tree, slp_instance,
 				    stmt_vector_for_cost *);
 extern bool vectorizable_induction (gimple *, gimple_stmt_iterator *,
-				    gimple **, slp_tree,
+				    stmt_vec_info *, slp_tree,
 				    stmt_vector_for_cost *);
 extern tree get_initial_def_for_reduction (gimple *, tree, tree *);
 extern bool vect_worthwhile_without_simd_p (vec_info *, tree_code);