[gcc r13-1793] tree-optimization/106387 - properly create SSA name for realigned load

[gcc r13-1793] tree-optimization/106387 - properly create SSA name for realigned load

[Richard Biener]

https://gcc.gnu.org/g:3c4af0f0549a07799d76e9e48d3d3bd85197b92a

commit r13-1793-g3c4af0f0549a07799d76e9e48d3d3bd85197b92a
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Jul 22 09:00:37 2022 +0200

    tree-optimization/106387 - properly create SSA name for realigned load
    
    The following fixes an oversight triggering after the recent change
    to bump_vector_ptr.
    
            PR tree-optimization/106387
            * tree-vect-stmts.cc (vectorizable_load): Use make_ssa_name
            if ptr is not an SSA name.

Diff:
---
 gcc/tree-vect-stmts.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 01d982eea98..f582d238984 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -10017,7 +10017,10 @@ vectorizable_load (vec_info *vinfo,
 				 (NULL_TREE, BIT_AND_EXPR, ptr,
 				  build_int_cst
 				  (TREE_TYPE (ptr), -(HOST_WIDE_INT) align));
-		    ptr = copy_ssa_name (ptr, new_stmt);
+		    if (TREE_CODE (ptr) == SSA_NAME)
+		      ptr = copy_ssa_name (ptr, new_stmt);
+		    else
+		      ptr = make_ssa_name (TREE_TYPE (ptr), new_stmt);
 		    gimple_assign_set_lhs (new_stmt, ptr);
 		    vect_finish_stmt_generation (vinfo, stmt_info,
 						 new_stmt, gsi);