re PR tree-optimization/91790 (ICE: verify_ssa failed (error: definition in…

re PR tree-optimization/91790 (ICE: verify_ssa failed (error: definition in block 2 follows the use))

2019-09-17  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91790
	* tree-vect-stmts.c (vectorizable_load): For BB vectorization
	use the correct DR for setting up realignment.

From-SVN: r275798

gcc/ChangeLog

+2019-09-17  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/91790
+	* tree-vect-stmts.c (vectorizable_load): For BB vectorization
+	use the correct DR for setting up realignment.
+
 2019-09-16  Uroš Bizjak  <ubizjak@gmail.com>
 
 	PR target/91719

gcc/tree-vect-stmts.c

@@ -9169,7 +9169,9 @@ vectorizable_load (stmt_vec_info stmt_info, gimple_stmt_iterator *gsi,
        || alignment_support_scheme == dr_explicit_realign)
       && !compute_in_loop)
     {
-      msq = vect_setup_realignment (first_stmt_info, gsi, &realignment_token,
+      msq = vect_setup_realignment (first_stmt_info_for_drptr
+				    ? first_stmt_info_for_drptr
+				    : first_stmt_info, gsi, &realignment_token,
 				    alignment_support_scheme, NULL_TREE,
 				    &at_loop);
       if (alignment_support_scheme == dr_explicit_realign_optimized)