[31/46] Use stmt_vec_info in function interfaces (part 1)

This first (less mechanical) part handles cases that involve changes in
the callers or non-trivial changes in the functions themselves.

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

gcc/
	* tree-vect-data-refs.c (vect_describe_gather_scatter_call): Take
	a stmt_vec_info instead of a gcall.
	(vect_check_gather_scatter): Update call accordingly.
	* tree-vect-loop-manip.c (iv_phi_p): Take a stmt_vec_info instead
	of a gphi.
	(vect_can_advance_ivs_p, vect_update_ivs_after_vectorizer)
	(slpeel_update_phi_nodes_for_loops):): Update calls accordingly.
	* tree-vect-loop.c (vect_transform_loop_stmt): Take a stmt_vec_info
	instead of a gimple stmt.
	(vect_transform_loop): Update calls accordingly.
	* tree-vect-slp.c (vect_split_slp_store_group): Take and return
	stmt_vec_infos instead of gimple stmts.
	(vect_analyze_slp_instance): Update use accordingly.
	* tree-vect-stmts.c (read_vector_array, write_vector_array)
	(vect_clobber_variable, vect_stmt_relevant_p, permute_vec_elements)
	(vect_use_strided_gather_scatters_p, vect_build_all_ones_mask)
	(vect_build_zero_merge_argument, vect_get_gather_scatter_ops)
	(vect_gen_widened_results_half, vect_get_loop_based_defs)
	(vect_create_vectorized_promotion_stmts, can_vectorize_live_stmts):
	Take a stmt_vec_info instead of a gimple stmt and pass stmt_vec_infos
	down to subroutines.

From-SVN: r263146

1 files changed, 8 insertions, 7 deletions

diff --git a/gcc/tree-vect-loop-manip.c b/gcc/tree-vect-loop-manip.c
index f065854..251fc81 100644
--- a/gcc/tree-vect-loop-manip.c
+++ b/gcc/tree-vect-loop-manip.c
@@ -1335,16 +1335,16 @@ find_loop_location (struct loop *loop)
   return dump_user_location_t ();
 }
 
-/* Return true if PHI defines an IV of the loop to be vectorized.  */
+/* Return true if the phi described by STMT_INFO defines an IV of the
+   loop to be vectorized.  */
 
 static bool
-iv_phi_p (gphi *phi)
+iv_phi_p (stmt_vec_info stmt_info)
 {
+  gphi *phi = as_a <gphi *> (stmt_info->stmt);
   if (virtual_operand_p (PHI_RESULT (phi)))
     return false;
 
-  stmt_vec_info stmt_info = vinfo_for_stmt (phi);
-  gcc_assert (stmt_info != NULL_STMT_VEC_INFO);
   if (STMT_VINFO_DEF_TYPE (stmt_info) == vect_reduction_def
       || STMT_VINFO_DEF_TYPE (stmt_info) == vect_double_reduction_def)
     return false;
@@ -1388,7 +1388,7 @@ vect_can_advance_ivs_p (loop_vec_info loop_vinfo)
 	 virtual defs/uses (i.e., memory accesses) are analyzed elsewhere.
 
 	 Skip reduction phis.  */
-      if (!iv_phi_p (phi))
+      if (!iv_phi_p (phi_info))
 	{
 	  if (dump_enabled_p ())
 	    dump_printf_loc (MSG_NOTE, vect_location,
@@ -1509,7 +1509,7 @@ vect_update_ivs_after_vectorizer (loop_vec_info loop_vinfo,
 	}
 
       /* Skip reduction and virtual phis.  */
-      if (!iv_phi_p (phi))
+      if (!iv_phi_p (phi_info))
 	{
 	  if (dump_enabled_p ())
 	    dump_printf_loc (MSG_NOTE, vect_location,
@@ -2088,7 +2088,8 @@ slpeel_update_phi_nodes_for_loops (loop_vec_info loop_vinfo,
       tree arg = PHI_ARG_DEF_FROM_EDGE (orig_phi, first_latch_e);
       /* Generate lcssa PHI node for the first loop.  */
       gphi *vect_phi = (loop == first) ? orig_phi : update_phi;
-      if (create_lcssa_for_iv_phis || !iv_phi_p (vect_phi))
+      stmt_vec_info vect_phi_info = loop_vinfo->lookup_stmt (vect_phi);
+      if (create_lcssa_for_iv_phis || !iv_phi_p (vect_phi_info))
 	{
 	  tree new_res = copy_ssa_name (PHI_RESULT (orig_phi));
 	  gphi *lcssa_phi = create_phi_node (new_res, between_bb);