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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code
 with -O3 -fno-tree-pta by r9-2475
Date: Sun, 17 Oct 2021 02:49:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102798

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
Vectorizer has

 if (DR_PTR_INFO (dr)
      && TREE_CODE (addr_base) =3D=3D SSA_NAME
      && !SSA_NAME_PTR_INFO (addr_base))
    vect_duplicate_ssa_name_ptr_info (addr_base, dr_info);

This fixes the crash.=20

diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 1e13148190c..fca5aebfbdb 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -4785,7 +4785,8 @@ vect_create_addr_base_for_vector_ref (vec_info *vinfo,
stmt_vec_info stmt_info,

   if (DR_PTR_INFO (dr)
       && TREE_CODE (addr_base) =3D=3D SSA_NAME
-      && !SSA_NAME_PTR_INFO (addr_base))
+      && !SSA_NAME_PTR_INFO (addr_base)
+      && TREE_CODE (SSA_NAME_VAR (addr_base)) !=3D PARM_DECL)
     vect_duplicate_ssa_name_ptr_info (addr_base, dr_info);

   if (dump_enabled_p ())=